Fluke PM3370B, PM3380B, PM3390B, PM3384B, PM3394B Service Manual

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PM3370B - PM3380B - PM3390B

PM3384B - PM3394B

Autoranging CombiScope Instrument

Service Manual

4822 872 05372

3/1-Dec-00

Warning: These servicing instructions are for use by qualified personnel only. To reduce the risc

of electric shock do not perform any servicing other than that contained in the operating instructions unless you are fully qualified to do so.

ST7352

9312

TRACE

INTENSITY

TEXT

INTENSITY

TRACE

ROTATION

FOCUS

POWER

ON OFF

AUTO SET

STATUS

CAL

SETUPS UTILITY

TEXT OFF

Probe Adjust

600mV

2kHz

POS

TRIG1

POS

ALT/CHOP

TRIG2

POS

TRIG3

POS

TRIG4

AMPL

VAR

AUTO

RANGE

CH1+CH2

AC DC

GND

AMPL

VAR

AUTO

RANGE

INV

AC DC

GND

VAR

AUTO

RANGE

AMPL

AC DC

GND

CH3+CH4

VAR

AMPL

AUTO

RANGE

AC DC

GND

INV

ALL INPUTS MAX 5Vrmsat 50Ω/MAX400Vpk at1MΩ

LOCAL

GRATICULE

ILLUMINATION

1MΩ 25pF

CURSORS

TRACK

DTB

TIME/DIV

∆

DELAY

HOLD OFF

TRIGGER POSITION

VAR

sns

TIME/DIV

TRIGGER

RUN/STOP

TB MODE

MAGNIFY

SINGLE_ARM’D

XPOS

TRIGGER

LEVEL

AUTO

RANGE

ANALOG

ACQUIRE

SAVE

RECALL

MEASURE

MATH

DISPLAY

HARD COPY

VERT MENU

DELAYED TIME BASE

IMPORTANT

In correspondence concerning this instrument please give the model number and serial number as located on the type plate on the rear of the instrument.

For your reference:

Model number: PM 33XXB/YY Serial number: DM .

Note: The design of this instrument is subject to continuous development and improvement. Consequently,

this instrument may incorporate minor changes in detail from the information provided in this manual.

Printed in The Netherlands

CONTENTS III

TABLE OF CONTENTS

Page

1 SAFETY INSTRUCTIONS

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

1.1 INTRODUCTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

1.2 SAFETY PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

1.3 CAUTION AND WARNING STATEMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

1.4 SYMBOLS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

2 CHARACTERISTICS

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

2.1 VERTICAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

2.1.1 Channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

2.1.2 Deflection Modes (Analog Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

2.1.3 Bandwidth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

2.1.4 Attenuator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

2.1.5 Input Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

2.1.6 Coupling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

2.1.7 Dynamic Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

2.1.8 Position Range. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

2.1.9 Trace Separation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

2.1.10 Input Voltage Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

2.1.11 Step Response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

2.1.12 Signal Delay. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

2.1.13 Vertical Accuracies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

2.2 TIMEBASE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

2.2.1 Timebase (modes) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

2.2.2 Timebase Settings (Analog Mode Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

2.2.3 DTB Delay (Analog Mode Only). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

2.2.4 Timebase Settings (Digital Mode Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

2.2.5 Timebase Delay (Digital Mode Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

2.2.6 DTB Delay (Digital Mode Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9

2.2.7 Analog Timebase Accuracies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9

2.2.8 Delaytime Accuracy (Analog Mode). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9

2.2.9 DTB Jitter In Starts (Analog Mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9

2.2.10 Timebase Accuraries (Digital Mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9

2.2.11 DTB Jitter In Starts (Digital Mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10

2.2.12 External Horizontal Deflection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10

2.2.13 Horizontal Display Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10

2.3 TRIGGERING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11

2.3.1 Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11

2.3.2 Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11

2.3.3 TV Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11

2.3.4 Coupling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12

2.3.5 Sensitivity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13

2.3.6 Slope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13

2.3.7 Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14

2.3.8 Logic Triggering Timing (Digital Mode Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14

2.3.9 Trigger Accuracies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15

2.4 EVENT COUNTER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15

IV CONTENTS

2.5 HOLD-OFF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15

2.6 PROCESSING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-16

2.6.1 Preprocessing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-16

2.6.2 Register Processing (Digital Mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-16

2.7 TRACE MEASUREMENTS (DIGITAL MODE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17

2.8 CURSORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17

2.8.1 Cursor Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17

2.8.2 Cursor Readouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18

2.8.3 Cursor Accuracies ( Analog Mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18

2.8.4 Cursor Accuracies (Digital Mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18

2.9 DIGITAL ACQUISITION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-19

2.9.1 Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-19

2.9.2 Sample Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-19

2.9.3 Multiplexed Channels. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-19

2.9.4 Trace Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20

2.9.5 Acquisition Time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21

2.9.6 Resolution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21

2.9.7 Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21

2.9.8 Register Manipulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22

2.9.9 Digital Acquisition Accuracies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22

2.10 FRONT PANEL MEMORY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22

2.11 BLANKING OR Z-AXIS (ONLY FOR ANALOG TRACE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22

2.12 DISPLAY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-23

2.12.1 CRT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-23

2.12.2 Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-23

2.12.3 Vertical Display Manipulations (Digital Mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-23

2.12.4 Horizontal Display Manipulations (Digital Mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-24

2.13 EXTERNAL INTERFACES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-24

2.13.1 Calibrator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-24

2.13.2 Standard external interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-24

2.13.3 Optional external interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-25

2.13.4 Printers and plotters support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-26

2.13.5 Real Time Clock. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-26

2.14 AUTO SET & CALIBRATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-26

2.14.1 Auto Set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-26

2.14.2 Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-26

2.15 POWER SUPPLY AND BATTERY BACKUP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-27

2.15.1 Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-27

2.15.2 Battery Backup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-27

2.16 MECHANICAL CHARACTERISTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-28

2.17 ENVIRONMENTAL CHARACTERISTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-28

2.17.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-28

2.17.2 Environmental . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-28

2.17.3 EMI. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-29

2.18 SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-32

CONTENTS V

2.19 ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-32

2.20 OPTIONS & OPTIONAL VERSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-32

2.20.1 Options Line cord. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-32

2.20.2 Options digital versions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-32

2.20.3 Options analog. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-33

2.20.4 Specification optional outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-33

2.20.5 Specification External trigger option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-34

2.20.6 Specification IEEE-OPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-35

3 DESCRIPTIONS

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

3.1 GENERAL DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

3.1.1 Introduction to oscilloscope family . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

3.1.2 Introduction to descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

3.1.3 Explanation of signal names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

3.1.4 Voltage values in the circuit diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

3.2 BLOCK DIAGRAM DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

3.2.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

3.2.2 Vertical channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8

3.2.3 Triggering and time bases . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

3.2.4 Final amplifiers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10

3.2.5 Front unit and microprocessor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11

3.2.6 Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11

3.2.7 Digitizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12

4 PARTS

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

4.1 UNITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

4.2 INTERCONNECTION CABLES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

4.3 MECHANICAL PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

5 UNIT DESCRIPTIONS

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.1-1

5.1 SIGNAL UNIT A1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.1-1

5.1.1 Description A1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.1-1

5.1.2 Signal name list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.1-14

5.1.3 Unit lay-outs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.1-21

5.1.4 Location list Signal Unit A1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.1-25

5.1.5 Circuit diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.1-35

5.1.6 Parts list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.1-59

5.2 FINAL XYZ AMPLIFIER A2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.2-1

5.2.1 Description of A2-200 MHz version . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.2-1

5.2.2 Signal name list A2-200 MHz version . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.2-5

5.2.3 Unit lay-outs A2-200 MHz version . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.2-7

5.2.4 Location list A2-200 MHz version . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.2-9

5.2.5 Circuit diagrams A2-200 MHz version . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.2-13

5.2.6 Parts list A2-200 MHz version . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.2-19

5.2.7 Description of A2-100 MHz version . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.2-35

5.2.8 Signal name list A2-100 MHz version . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.2-39

5.2.9 Unit lay-outs A2-100 MHz version . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.2-41

5.2.10 Location list A2-100 MHz version . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.2-43

5.2.11 Circuit diagrams A2-100 MHz version . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.2-47

5.2.12 Parts list A2-100 MHz version . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.2-53

VI CONTENTS

5.3 MICROPROCESSOR A3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.3-1

5.3.1 Description A3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.3-1

5.3.2 Signal name list A3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.3-2

5.3.3 Location list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.3-4

5.3.4 Unit lay-outs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.3-5

5.3.5 Circuit diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.3-7

5.3.6 Parts list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.3-13

5.4 FRONT UNIT A4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.4-1

5.4.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.4-1

5.4.2 Signal name list A4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.4-1

5.4.3 Key switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.4-2

5.4.4 Unit lay-outs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.4-5

5.4.5 Circuit diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.4-7

5.4.6 Parts list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.4-9

5.5 CRT CONTROLS UNIT A5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5-1

5.5.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5-1

5.5.2 Unit Lay-outs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5-2

5.5.3 Circiuit diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5-3

5.5.4 Parts list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5-4

5.6 POWER SUPPLY A6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.6-1

5.6.1 Description A6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.6-1

5.6.2 Signal name list A6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.6-5

5.6.3 Unit lay-outs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.6-7

5.6.4 Circuit diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.6-9

5.6.5 Parts list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.6-13

5.7 RESERVED FOR FUTURE EXTENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.7-1

5.8 DIGITIZER A8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.8-1

5.8.1 Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.8-1

5.8.2 Signal name list digitizer A8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.8-23

5.8.3 Unit lay-outs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.8-29

5.8.4 Location list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.8-31

5.8.5 Circuit diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.8-37

5.8.6 Parts list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.8-55

5.9 RESERVED FOR FUTURE EXTENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.9-1

5.10 CONNECTOR BOARD A10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.10-1

5.10.1 Unit lay-out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.10-1

5.10.2 Circuit diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.10-3

5.10.3 Parts list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.10-5

5.11 FACTORY INSTALLED OPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.11-1

5.11.1 IEEE-OPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.11-1

5.11.2 AUXILIARY OUTPUTS OPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.11-1

5.11.3 EXTERNAL TRIGGER OPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.11-7

CONTENTS VII

6 PERFORMANCE TEST

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

6.1 GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

6.2 RECOMMENDED TEST EQUIPMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

6.3 TEST PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

6.3.1 Preliminar3y settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

6.3.2 Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

6.3.3 Auto set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4

6.3.4 Orthogonality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5

6.3.5 Trace distortion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6

6.3.6 Vertical deflection; deflection coefficients . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7

6.3.7 Vertical deflection; variable gain control range (continuation of 6.3.6) . . . . . . . . . . . . 6-8

6.3.8 Vertical deflection; input coupling (continuation of 6.3.7). . . . . . . . . . . . . . . . . . . . . . . 6-8

6.3.9 Vertical cursor accuracy (continuation of 6.3.8.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-9

6.3.10 Vertical deflection; high-frequency response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-9

6.3.11 Vertical deflection; low-frequency response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-10

6.3.12 Vertical deflection; dynamic range at 15/25/50 MHz . . . . . . . . . . . . . . . . . . . . . . . . . 6-11

6.3.13 Vertical deflection; dynamic range at 60/100/200 MHz (continuation of 6.3.12) . . . . 6-11

6.3.14 Vertical deflection; position range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-12

6.3.15 Vertical deflection; crosstalk between channels at 60/100/200 MHz . . . . . . . . . . . . . 6-12

6.3.16 Vertical deflection; common mode rejection ratio at 1 MHz . . . . . . . . . . . . . . . . . . . . 6-13

6.3.17 Vertical deflection; common mode rejection ratio at 50 MHz

(continuation of 6.3.16) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-14

6.3.18 Vertical deflection; LF linearity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-15

6.3.19 Vertical deflection; visual signal delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-15

6.3.20 Vertical deflection; base line instability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-17

6.3.21 Delay difference between vertical channels. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-17

6.3.22 Horizontal deflection; display modes and trace separation . . . . . . . . . . . . . . . . . . . . 6-19

6.3.23 Horizontal deflection; X deflection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-20

6.3.24 Horizontal deflection; MAIN TB deflection coefficients . . . . . . . . . . . . . . . . . . . . . . . 6-21

6.3.25 Horizontal deflection; VARiable mode accuracy MAIN TB. . . . . . . . . . . . . . . . . . . . . 6-22

6.3.26 Time cursor accuracy (continuation of 6.3.25) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-23

6.3.27 Horizontal deflection; DELAYED TIME BASE deflection coefficients . . . . . . . . . . . . 6-24

6.3.28 Horizontal deflection; delay time multiplier. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-25

6.3.29 Horizontal deflection; delayed timebase jitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-26

6.3.30 Horizontal deflection; X deflection coefficient via CH1. . . . . . . . . . . . . . . . . . . . . . . . 6-26

6.3.31 Horizontal deflection; X deflection coefficient via ’line’. . . . . . . . . . . . . . . . . . . . . . . . 6-27

6.3.32 Horizontal deflection; high frequency response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-28

6.3.33 Maximum phase shift between horizontal and vertical deflection . . . . . . . . . . . . . . . 6-28

6.3.34 MAIN TB triggering PM3390B/3394B;

trigger sensitivity via CH1, CH2, CH3 and CH4 (EXT) . . . . . . . . . . . . . . . . . . . . . . . 6-30

6.3.35 MAIN TB triggering PM3370B/3380B/3384B;

trigger sensitivity via CH1, CH2, CH3 and CH4 (EXT). . . . . . . . . . . . . . . . . . . . . . . . 6-31

6.3.36 MAIN TB/DEL’D TB triggering; trigger sensitivity TVL-TVF . . . . . . . . . . . . . . . . . . . . 6-32

6.3.37 DEL’D TB triggering PM3390B/94B;

trigger sensitivity via CH1, CH2, CH3 and CH4 (EXT) . . . . . . . . . . . . . . . . . . . . . . . 6-32

6.3.38 DEL’D TB triggering PM3370B/80B/84B;

trigger sensitivity via CH1, CH2, CH3 and CH4 (EXT). . . . . . . . . . . . . . . . . . . . . . . . 6-34

6.3.39 Trigger sensitivity in logic mode PM3394B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-35

6.3.40 Trigger sensitivity in logic mode PM3384B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-36

6.3.41 Z-MOD sensitivity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-37

6.3.42 Probe Adjust signal; frequency and output voltage . . . . . . . . . . . . . . . . . . . . . . . . . . 6-38

6.3.43 Auto range functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-39

6.3.44 Testing the optional auxiliary outputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-40

VIII CONTENTS

7 CALIBRATION ADJUSTMENT PROCEDURE

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

7.1 INTRODUCTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

7.2 DARK LEVEL OF CRT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

7.3 TRACE ROTATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2

7.4 HORIZONTAL (X) GAIN AND OFFSET (CRT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2

7.5 TEXT STABILITY AND X-OFFSET (CRT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2

7.6 VERTICAL (Y) GAIN AND OFFSET (CRT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2

7.7 HORIZONTAL GAIN AND OFFSET (VECTOR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3

7.8 VERTICAL GAIN AND OFFSET (VECTOR). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3

7.9 ASTIGMATISM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3

7.10 AUTOCAL PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3

7.11 LF SQUARE-WAVE RESPONSE CH1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-4

7.12 LF SQUARE-WAVE RESPONSE CH2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5

7.13 LF SQUARE-WAVE RESPONSE CH3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5

7.14 LF SQUARE-WAVE RESPONSE CH4 and EXT TRIG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6

7.15 HF SQUARE-WAVE RESPONSE FINAL Y AMPLIFIER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-7

7.16 HF RESPONSE DSO MODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8

7.17 TRIGGER DELAY ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-9

7.18 SAVING THE CALIBRATION DATA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-10

7.19 TESTING THE INSTRUMENT’S PERFORMANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-10

8 CORRECTIVE MAINTENANCE PROCEDURES

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

8.1 DISMANTLING THE INSTRUMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

8.1.1 General information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

8.1.2 Removing the cabinet and carrying handle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

8.2 REPLACEMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

8.2.1 Standard parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2

8.2.2 Special parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2

8.2.3 Transistors and Integrated Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2

8.3 STATIC SENSITIVE COMPONENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2

8.4 SOLDERING TECHNIQUES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3

8.4.1 General soldering techniques . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3

8.4.2 Soldering micro-miniature semi-conductors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3

CONTENTS IX

8.5 REMOVING THE UNITS, MECHANICAL PARTS AND CRT . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4

8.5.1 Removing the rotary knobs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4

8.5.2 Detachment of ribbon cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4

8.5.3 Removal of signal unit A1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-5

8.5.4 Removal of Final XYZ amplifier unit A2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-6

8.5.5 Removal of unit at socket of CRT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-7

8.5.6 Removal of Cathode Ray Tube (CRT). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-7

8.5.7 Removal of microprocessor unit A3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-7

8.5.8 Removal of the units in the front frame (A4, A5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-8

8.5.9 Removal of the Power supply unit A6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-8

8.5.10 Removal of digitizer unit A8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-9

8.6 INSTRUMENT REPACKING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-9

8.7 TROUBLESHOOTING TECHNIQUES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-9

8.8 TROUBLESHOOTING THE POWER SUPPLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-10

8.9 SPECIAL TOOLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-11

8.9.1 Extension board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-11

8.9.2 Flash-ROM loader program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-11

8.10 RECALIBRATION AFTER REPAIR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-11

8.11 TESTS BUILT INTO THE INSTRUMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-12

8.11.1 Power-up test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-12

8.11.2 Introduction to diagnostic tests. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-12

8.11.3 SELFTESTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-15

8.11.4 Repair tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-17

9 SAFETY INSPECTION AND TESTS AFTER REPAIR AND

MAINTENANCE IN THE PRIMARY CIRCUIT

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1

9.1 GENERAL DIRECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1

9.2 SAFETY COMPONENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1

9.3 CHECKING PROTECTIVE GROUND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1

9.4 CHECKING INSULATION RESISTANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1

9.5 CHECKING LEAKAGE CURRENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1

9.6 VOLTAGE TEST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1

X CONTENTS

DECLARATION OF CONFORMITY

for

Autoranging CombiScope Instrument

PM3370B, PM3380B, PM3390B

PM3384B, PM3394B

Manufacturer

Fluke Industrial B.V.

Lelyweg 1

7602 EA Almelo

The Netherlands

Statement of Conformity

Based on test results using appropriate standards, the product is in conformity with

Electromagnetic Compatibility Directive 89/336/EEC

Low Voltage Directive 73/23/EEC

Sample tests

Standards used:

IEC 348 (1978)

Safety Requirements for Electronic Measuring Apparatus

EN 50081-1 (1992)

Electromagnetic Compatibility. Generic Emission Standard:

EN55022 and EN60555-2

EN 50082-1 (1992)

Electromagnetic Compatibility. Generic Immunity Standard:

IEC801 -2, -3, -4, -5

The tests have been performed in a typical configuration.

This Conformity is indicated by the symbol , i.e. "Conformité européenne".

SAFETY INSTRUCTIONS 1 - 1

1 SAFETY INSTRUCTIONS

Read these pages carefully before installation and use of the instrument.

1.1 INTRODUCTION

The following paragraphs contain information, cautions and warnings which must be followed to ensure safe operation and to keep the instrument in a safe condition.

WARNING: Servicing described in this manual is to be done only by qualified service

personnel. To avoid electric shock, do not service the instrument unless you are qualified to do so.

1.2 SAFETY PRECAUTIONS

For the correct and safe use of this instrument it is essential that both operating and servicing personnel follow generally accepted safety procedures in addition to the safety precautions specified in this manual. Specific warning and caution statements, where they apply, will be found throughout the manual. Where necessary, the warning and caution statements and/or symbols are marked on the apparatus.

1.3 CAUTION AND WARNING STATEMENTS

CAUTION: Is used to indicate correct operating or maintentance procedures in order to

prevent damage to or destruction of the equipment or other property.

WARNING: Calls attention to a potential danger that requires correct procedures or

practices in order to prevent personal injury.

1.4 SYMBOLS

Live part (black/yellow)

High voltage terminal ≥ 1000 V (red)

Attention refer to the manual: This symbol is to indicate that information about usage of a feature is contained in the manual.

Protective ground terminal (black)

Static sensitive components (black/yellow)

1 - 2 SAFETY INSTRUCTIONS

1.5 IMPAIRED SAFETY-PROTECTION

Whenever it is likely that safety has been impaired, the instrument must be turned off and disconnected from line power. The matter should then be referred to qualified technicians. Safety protection is likely to be impaired if, for example, the instrument fails to perform the intended measurements or shows visible damage.

1.6 GENERAL SAFETY INFORMATION

WARNING: Removing the instrument cover or removing parts, except those to which

access can be gained by hand, is likely to expose live parts and accessible terminals which can be dangerous to live.

The instrument shall be disconnected from all voltage sources before it is opened.

Capacitors inside the instrument can hold their charge even if the instrument has been separated from all voltage sources.

WARNING: Any interruption of the protective ground conductor inside or outside the

instrument, or disconnection of the protective ground terminal, is likely to make the instrument dangerous. Intentional interruption is prohibited.

Components which are important for the safety of the instrument may only be replaced by components obtained through your local FLUKE organisation. (See also section 9).

After repair and maintenance in the primary circuit, safety inspection and tests, as mentioned in section 9 have to be performed.

CHARACTERISTICS 2 - 1

2 CHARACTERISTICS

A. Performance Characteristics

- Properties expressed in numerical values with tolerances, ranges, or limits stated, are guaranteed by the manufacturer.

- Properties expressed in numerical values without tolerances, ranges, or limits stated, represent the characteristics of an average instrument.

- This specification is valid if the temperature has not changed more than + or - 5 °C since the last AUTO CAL, the probe is of the same type as delivered with the instrument, and if the average factor is 8.

- For definitions of terms, reference is made to IEC Publication 351-1, 359.

B. Safety Characteristics

This instrument has been designed and tested in accordance with IEC Publication 348, Safety Requirements for Electronic Measuring Apparatus, and has been supplied in a safe condition. This manual contains information and warnings which must be followed by the user to ensure safe operation and to keep the instrument in safe condition. The instrument has been designed for indoor use. It may occasionally be subjected to temperatures between +5 °C and 10 °C without degradation of its safety.

C. General Characteristics

•

Overall dimensions:

•

Height (without feet) : 139 mm ( 5.5 in)

•

Width (without handle) : 341 mm (13.5 in)

•

Length (without handle and front cover): 481 mm (19 in)

Weight 9.5 kg (19.7 lb)

Operating positions: a) Horizontally on bottom feet b) Vertically on rear feet c) On the carrying handle in three sloping positions

Note: All items that refer specifically to only one mode (analog or digital) are identified in the

leftmost column with an ’A’ or a ’D’.

ST7354

9312

TRACE

INTENSITY

TEXT

INTENSITY

TRACE

ROTATION

FOCUS

POWER

ON OFF

AUTO SET

STATUS

CAL SETUPS

UTILITY

TEXT OFF

Probe Adjust

600mV

2kHz

POS

TRIG1

POS

ALT/CHOP

TRIG2

POS

TRIG3

POS

TRIG4

AMPL

VAR

AUTO

RANGE

CH1+CH2

AC DC

GND

AMPL

VAR

AUTO

RANGE

INV

AC DC

GND

VAR

AUTO

RANGE

AMPL

AC DC

GND

CH3+CH4

VAR

AMPL

AUTO

RANGE

AC DC

GND

INV

ALL INPUTS MAX 5Vrms at 50Ω/MAX 400Vpk at1MΩ

LOCAL

GRATICULE

ILLUMINATION

1MΩ 25pF

CURSORS

TRACK

DTB

TIME/DIV

∆

DELAY

HOLD OFF

TRIGGER POSITION

VAR

sns

TIME/DIV

TB MODE

RUN/STOP

TB MODE

MAGNIFY

SINGLE_ARM’D

XPOS

TRIGGER

LEVEL

AUTO

RANGE

ANALOG

ACQUIRE

SAVE

RECALL

MEASURE

MATH

DISPLAY

HARD COPY

VERT MENU

DELAYED TIME BASE

481 mm

341 mm

139 mm

Figure 2.1 Dimensions

2 - 2 CHARACTERISTICS

CHARACTERISTICS ADDITIONAL INFORMATIONSPECIFICATIONS

2.1 VERTICAL

2.1.1 Channels

CHANNELS CH1; CH2; Form a channel set

CH3; CH4 Form a channel set

See Note 1

Note 1: CH1 and CH2 for PM3370B, PM3380B and PM3390B.

2.1.2 Deflection Modes (Analog Only)

MODES CH1, CH2, CH3, CH4 See Note 1

CH2 and CH4 can be inverted to allow

-CH2 or -CH4

CH1 + CH2 CH2 can be inverted to allow

CH1 - CH2

CH3 + CH4 CH4 can be inverted to allow

CH3 - CH4

Automode:

Auto attenuator CH1, CH2 All models

CH3, CH4 PM3384B/94B

Windows ON See Note 2

CH1, CH2 All models CH3, CH4 PM3384B/94B

Alternate Chopped

Chopped mode:

Chopped freq. 1 MHz

Note 1: CH1 and CH2 for PM3370B, PM3380B and PM3390B.

Note 2: If more than one channel ON.

CHARACTERISTICS 2 - 3

CHARACTERISTICS ADDITIONAL INFORMATIONSPECIFICATIONS

2.1.3 Bandwidth

FREQUENCY RESPONSE At BNC Lower transition point of bandwidth input coupling in AC pos <10 Hz

PM3394B/90B Upper transition point of bandwidth (Ambient 5 to 40 °C) >200 MHz See Note 1 (Ambient 0 to 50 °C) >175 MHz See Note 1

PM3384B/80B Upper transition point of bandwidth (Ambient 5 to 40 °C) >100 MHz With external 50Ω (Ambient 0 to 50 °C) >90 MHz With external 50Ω

PM3370B Upper transition point of bandwidth (Ambient 5 to 40 °C) >60 MHz With external 50Ω (Ambient 0 to 50 °C) >55 MHz With external 50Ω

BANDWIDTH LIMITER Upper transition point of bandwidth 20 MHz

Note 1: PM3394B CH1 through CH4 in 50Ω position at BNC.

PM3390B CH1 and CH2 in 50Ω position at BNC.

2.1.4 Attenuator

PM3394B/PM3384B CH1 to CH4 steps 2 mV/div to 5V/div In 1-2-5 sequence

PM3390B/PM3380B/PM3370B CH1 and CH2 steps 2 mV/div to 5V/div In 1-2-5 sequence EXT TRIG steps 0.1V/div and 1V/div

Variable gain mode 2 mV/div to Continuously

12.5V/div variable

Auto Attenuator 2<div<6.4 1-2-5 steps precision

(min. 50 mV/div)

Auto Attenuator 1<div<3.2 1-2-5 steps precision (Windows ON) (min. 50 mV/div)

2 - 4 CHARACTERISTICS

CHARACTERISTICS ADDITIONAL INFORMATIONSPECIFICATIONS

2.1.5 Input Characteristics

INPUT CONNECTOR BNC See Note 1

INPUT IMPEDANCE Measured at freq. (in 1 MΩ pos.) <1MHz R parallel-value 1 MΩ

- tolerance ±1 %

C parallel-value 25 pF

- tolerance ±2 pF

INPUT INPEDANCE PM3390B on CH1 and CH2 (in 50Ω pos.) PM3394B all channels R parallel value 50Ω

- tolerance ±1 %

VSWR (typical) 1.5:1 See Note 2

Note 1: BNC with Probe Readout pin which causes the instrument to change V/div indication, input

impedance, and attenuator setting according to the probe (when equiped with a probe indicator).

Note 2: Measured up to 200 MHz input frequency; in dc and ac coupling of input.

2.1.6 Coupling

COUPLING dc, ac, ground See Note 1

Note 1: In GND position: channel disconnected from input, and connected to ground, BNC open

(when not in 50Ω position). The GND coupling is available for all channels except EXTTRIG.

2.1.7 Dynamic Range

PM3390B/PM3394B Up to 50 MHz ±12 div Symmetrical Up to 200 MHz ±4 div Symmetrical

PM3380B/PM3384B Up to 25 MHz ±12 div Symmetrical Up to 100 MHz ±4 div Symmetrical

PM3370B Up to 15 MHz ±12 div Symmetrical Up to 60 MHz ±4 div Symmetrical

2.1.8 Position Range

POSITION RANGE + or - ≥ 8 div Symmetrical

2.1.9 Trace Separation

TRACE SEPARATION MTB and DTB Min. range + or - ≥ 4 div MTB fixed, DTB shifts

CHARACTERISTICS 2 - 5

CHARACTERISTICS ADDITIONAL INFORMATIONSPECIFICATIONS

2.1.10 Input Voltage Limits

INPUT VOLTAGE LIMITS See Note 1

In high Z position ± 400V See Note 2 (dc + ac peak) In 50Ω position dc ± 5V ac rms 5V See Note 3 ac peak ± 50V See Note 3

Note 1: The instrument should be properly grounded through the protective ground conductor of the

power cord.

Note 2: Up to 10 KHz; >10 kHz see figure 1.1

Note 3: Maximum of 50 mJ during any 100 ms interval.

2.1.11 Step Response

5 Divisions Pulse In 50Ω Input Impedance

STEP RESPONSE See Note 1

Note 1: Calculated from the formula: Rise time = 0.35 / Bandwidth and is measured over the central

5 divisions (vertical)

1k 10k 100k 1M 10M 100M

100

200

400

MAX. INPUT VOLTAGE (Vpk)

FREQUENCY (Hz)

ST6063

Figure 2.2 Max. input voltage versus frequency

2 - 6 CHARACTERISTICS

CHARACTERISTICS ADDITIONAL INFORMATIONSPECIFICATIONS

2.1.12 Signal Delay

A: VISUAL SIGNAL DELAY 15 ns PM3390B94B

13 ns PM3370B/80B/84B

DELAY BETWEEN CHANNELS CH1 and CH2 <250 ps PM3370B/80B/90B

CH1.... CH4 <250 ps PM3384B/94B

2.1.13 Vertical Accuracies

ACCURACY deflection factor A: Gain error (dc) ±1.3 % Over central 6 divisions

See Note 1

D: Additional gain error (dc) ±0.7% Gain error TrigView ±3 %

A: Nonlinearity ≤2 % See Note 2

D: Digital non linearity ≤4.5 % See Note 2

MAX. BASELINE INSTABILITY Jump (all between 0.2 div or 1 mV Whichever is greater steps, var, and N/I) (after autocal) Drift 0.1 div/h Temperature coefficient 0.03 div/K

CHANNEL ISOLATION Of deselected channels at 10 MHz 100:1 See Note 3 Of deselected channels at upper transition point 50:1 See Note 4 Between selected channels 50:1 See Note 5

CMRR See Note 6 at 2 MHz 100:1 at 50 MHz 25:1

Note 1: Add 1.5% for variable gain mode.

Note 2: 2 division center screen signal with a frequency of 50 kHz, shifted within central 6 divisions.

Note 3: At 10 MHz; input to deselected channel equivalent to 8 divisions or less.

Note 4: Channels with equal V/div; input to deselected channels equivalent to 6 divisions.

Note 5: Channels with equal V/division settings; input to either channel 6 div. PM3390B/94B; max.

input amplitude 3Vpp

Note 6: Between any two input channels at same attenuator setting; VAR of V/div setting adjusted

for best CMRR; measured with max. 8 div.

CHARACTERISTICS 2 - 7

CHARACTERISTICS ADDITIONAL INFORMATIONSPECIFICATIONS

2.2 TIMEBASE

2.2.1 Timebase (modes)

TIMEBASE MODES MTB only MTB= Main Timebase

MTB and DTB Alternating TB-mode DTB only DTB = Delayed Timebase Variable TB Auto TB

MTB trigger modes AUTO Free run after 100 ms

TRIGGERED SINGLE SHOT SINGLE SCAN

DTB trigger modes DTB starts Starts after delay time

DTB triggered Starts on first trigger

after delay time

2.2.2 Timebase Settings (Analog Mode Only)

MTB PM3390B/PM3394B Settings 0.5s/div to 20 ns/div See Note 1 Variable Time/div range 1.25s/div to 20 ns/div MTB continuously variable

MTB PM3370B/PM3380B/PM3384B Settings 0.5s/div to 50 ns/div See Note 1 Variable Time/div range 1.25s/div to 50 ns/div MTB continuously variable

DTB PM3390B/PM3394B Settings 0.5s/div to 20 ns/div See Note 1, See Note 3

DTB PM3370B/PM3380B/PM3384B Settings 0.5s/div to 50 ns/div See Note 1, See Note 3

TIMEBASE MAGNIFICATION 10x See Note 2

Note 1: In a 1-2-5 sequence. By means of the timebase magnifier (x10) the range is extended to 2

ns/div (PM3390B/94B) or 5ns/div (PM3370B/80B/84B).

Note 2: Expands the normal time/div by 10 times (MTB and DTB)

Note 3: The DTB sweep speed is higher or equal to MTB time/div setting.

2.2.3 DTB Delay (Analog Mode Only)

DELAY TIME 2 ns to 4.9s

Position range 0.1 div to 9.9 div

Resolution 1: 40000

2 - 8 CHARACTERISTICS

CHARACTERISTICS ADDITIONAL INFORMATIONSPECIFICATIONS

2.2.4 Timebase Settings (Digital Mode Only)

MTB Settings REAL TIME SAMPLING 200s/div to 250 ns/div See Note 1 and 4

ROLL 200s/div to 200 ms/div See Note 2

RANDOM SAMPLING PM3390B/94B 200 ns/div to 2 ns/div See Note 2 PM3370B/80B/84B 200 ns/div to 5 ns/div See Note 2

Variable Timebase 2 nsec ...1 µsec/div 1-2-5 sequence steps

1 µsec ... 500 µsec/div 1 µsec step size 500 µsec ... 200 sec/div equals analog step size

Auto Timebase

Capture Range DC up to full bandwidth Dynamic Range 2 nsec ... 200 msec/div

DTB Settings (STARTS/TRIGGERED) See Note 5 REAL TIME SAMPLING 0.5 ms/div to 250 ns/div or Whichever is greater

0.5 ms/div to 0.001x MTB setting See Note 1 and 3

RANDOM SAMPLING 200 ns/div to 20 ns/div or Whichever is greater

200 µs/div to 2 ns/div 200 ns/div to

only for MTB 0.001x MTB setting See Note 2 and 3

Note 1: In a 1-2-5 sequence and 250 ns.

Note 2: In a 1-2-5 sequence.

Note 3: The DTB sweep speed is higher or equal to MTB time/div. setting.

Note 4: When DTBis on: 500 ms/div to ....

Note 5: DTB is only possible with normal acquisition length. Triggered DTB is not possible in

combination with tv, logic or event delay trigger mode.

2.2.5 Timebase Delay (Digital Mode Only)

TIME DELAY TRIGGER POSITION Acquisition length normal -10 to 0 div pretrigger Acquisition length max. PM3384B/94B -640 to 0 div pretrigger PM3370B/80B/90B -160 to 0 div pretrigger, note 1

DELAY 0 to 1000 div posttrigger Resolution steps of 0.02 div sample distance

EVENTS DELAY Range 1 to 16384 See event counter

Note 1: When extended memory option is installed Time delay of trigger position at max. acquisition

length is -640 to 0 div. pretrigger.

CHARACTERISTICS 2 - 9

CHARACTERISTICS ADDITIONAL INFORMATIONSPECIFICATIONS

2.2.6 DTB Delay (Digital Mode Only)

TRIGGERED DELAY TIME 2 ns to 4.9 s Position range 0.1 div to 9.9 div Resolution 1 : 40000

STARTS DELAY TIME 0 to 10 div of MTB setting Position range 0 div to 10 div Resolution 1 : 40000

2.2.7 Analog Timebase Accuracies

Unmagnified: ± (1.3% of reading

+0.5% of central 8 div) See Note 1

Magnified: See Note 2 Up to 10 ns div ± (1.3% of reading See Note 1

+1.0% of central 8 div)

In 5ns/div and 2ns/div ± (1.8% of reading

+1.5% of central 8 div) See Note 1

Note 1: Add 1% of reading in variable mode.

Note 2: Valid over central unmagnified 8 divisions.

2.2.8 Delaytime Accuracy (Analog Mode)

MTB in 20 µs/div ± (0.8% of reading See Note 1 DTB in 2 µs/div +0.3% of central

8 div + Tf) PM3390B/94B Tf = 4 ns PM3370B/80B/84B Tf = 5 ns

Note 1: add 1% of reading in variable mode.

2.2.9 DTB Jitter In Starts (Analog Mode)

Jitter 1 part of 25000

2.2.10 Timebase Accuraries (Digital Mode)

MTB, DTB Real Time Mode ±0.010%

Equivalent Time Mode ±0.5%

2 - 10 CHARACTERISTICS

CHARACTERISTICS ADDITIONAL INFORMATIONSPECIFICATIONS

2.2.11 DTB Jitter In Starts (Digital Mode)

Jitter 120 ps

2.2.12 External Horizontal Deflection

This paragraph is valid only for the analog mode. In the digital mode X versus Y is defined as a display mode.

DEFLECTION SOURCES PM3384B/94B Line and CH1 to CH4 PM3370B/80B/90B Line, CH1, CH2, EXT TRIG

LINE DEFLECTION Deflection 6 ±1.7 div Between 49 and 61 Hz amplitude at 220 volts

CHANNEL DEFLECTION Refer to VERTICAL Error limit ±5% Over central 6 divisions Linearity error limit ±2% See Note 1 Dynamic range up to 100 kHz 20 div up to 2 MHz 10 div

POSITION RANGE ±5 div

FREQUENCY RESPONSE Upper transition point 2 MHz

MAX. PHASE DIFFERENCE Between horizontal and vertical 3° Up to 100 kHz

Note 1: 2 div/50kHz center screen signal shifted within central 8 divisions.

2.2.13 Horizontal Display Accuracy

Display Accuracy ±(0.8% of reading + 0.5% of central 8 divisions)

CHARACTERISTICS 2 - 11

CHARACTERISTICS ADDITIONAL INFORMATIONSPECIFICATIONS

2.3 TRIGGERING

2.3.1 Source

MTB trigger sources PM3384B/94B CH1 to CH4, Line PM3370B/80B/90B CH1, CH2, Line, EXT TRIG

DTB trigger sources PM3384B/94B CH1 to CH4 PM3370B/80B/90B CH1, CH2

2.3.2 Modes

MODES MTB triggering PM3384B/94B EDGE, TV,

D:PATTERN, Enter/exit pattern plus

D:STATE, timed pattern.

D:GLITCH

PM3370B/80B/90B EDGE, TV,

D:GLITCH

MODES DTB triggering EDGE

2.3.3 TV Systems

TV systems TV See Note 1

HDTV See Note 1

TV Line 1 to n See Note 1 and 2

Note 1: Line selection possible in field1and field2. In digital mode, triggered DTB not possible in

combination with TV line.

Note 2: n is equal to maximum lines of TV system.

2 - 12 CHARACTERISTICS

CHARACTERISTICS ADDITIONAL INFORMATIONSPECIFICATIONS

2.3.4 Coupling

BANDWIDTH EDGE TRIGGER MTB Vertical coupling in DC

Lower transition point of BW BW = Bandwidth Trigger coupling: DC dc AC 10 Hz LF-reject 30 kHz HF-reject dc

Upper transition point of BW BW = Bandwidth Trigger coupling: DC ) AC )See sensitivity LF-reject ) HF-reject 30 kHz

BANDWIDTH EDGE TRIGGER DTB Vertical coupling in DC

Lower transition point of BW BW = bandwidth Trigger coupling: DC dc AC 10 Hz LF-reject 30 kHz HF-reject dc

Upper transition point of BW BW = bandwidth Trigger coupling: DC ) AC )See sensitivity LF-reject ) HF-reject 30 kHz

CHARACTERISTICS 2 - 13

CHARACTERISTICS ADDITIONAL INFORMATIONSPECIFICATIONS

2.3.5 Sensitivity

EDGE TRIGGER SENSITIVITY MTB and DTB of: See Notes 1, 3, 4 PM3390B/94B dc to 100 MHz 0.6 div dc to 200 MHz 1.2 div dc to 300 MHz 2.0 div See Note 2

PM3380B/84B dc to 50 MHz 0.6 div dc to 100 MHz 1.2 div dc to 200 MHz 2.0 div See Note 2

PM3370B dc to 30 MHz 0.6 div dc to 60 MHz 1.2 div dc to 150 MHz 2.0 div See Note 2

TV TRIGGER SENSITIVITY (ampl. of sync. pulse) 0.7 div See Note 1

TRIGGER SENSITIVITY D: PATTERN/STATE PM3394B Rectangle pulses t ≥ 10 ns 1.0 div See Note 5 t ≥ 2 ns 2.0 div

PM3384B Rectangle pulses t ≥ 20 ns 1.0 div See Note 5 t ≥ 4 ns 2.0 div

Note 1: All figures are valid for an ambient temperature range of 5 to 40 °C, add 20% for ambient 0

to 50 °C.

Note 2: Measured with a 2 divisions center screen signal.

Note 3: In noise trigger multiply stated value by 2.

Note 4: In 2 ... 5 mV/div multiply stated value by 2.

Note 5: Duty cycle 50%.

2.3.6 Slope

Slope selection edge + or - MTB and DTB

See Note 1

D:Dual slope Up to full vertical See note 2

bandwith

Note 1: In TV-triggering positive/negative video.

Note 2: Only in single shot, real time mode.

2 - 14 CHARACTERISTICS

CHARACTERISTICS ADDITIONAL INFORMATIONSPECIFICATIONS

2.3.7 Level

LEVEL CONTROL RANGE MTB EDGE ≥±8 div Unless: In level p(eak)p(eak) See Note 1 TV Fixed

D: PATTERN, STATE PM3370B/80B/90B: and GLITCH ±5 div glitch mode only

LEVEL CONTROL RANGE DTB EDGE ≥±8 div

Note 1: The control range of the trigger level is related to the peak-peak value and duty cycle of the

trigger signal.

2.3.8 Logic Triggering Timing (Digital Mode Only)

PATTERN/GLITCH DETECTION PM3370B/80B/90B: Max. pattern rate 150 MHz glitch detection only Min. present time PM3390B/94B 2 ns Pulse amplitude >2 div PM3380B/84B 4 ns Pulse amplitude >2 div PM3370B 6 ns Pulse amplitude >2 div

range t

20 ns, 30 ns, 40 ns,

50 ns to 0.16s See note 1

range t

20 ns, 40 ns,

50 ns, 60 ns to 0.16s See note 1

accuracy t

±5 ns

STATE DETECTION Not in PM3370B/80B/90B Max. state rate 150 MHz Min. setup time 2.5 ns Pattern to clock Min. hold time 2.5 ns Pattern to clock

Note 1: Timing behavior around t

and t2.

Pattern valid time:

------|

********

|TTTTTTTTTTTTTTTTTTT|

********

|-------

1t1

+10 nst2-10 nst

- : not triggered

: undefined

T: triggered

CHARACTERISTICS 2 - 15

CHARACTERISTICS ADDITIONAL INFORMATIONSPECIFICATIONS

2.3.9 Trigger Accuracies

TRIGGER LEVEL Accuracy edge ≤0.2 div At 1 MHz input signal

D: Accuracy logic ≤0.4 div At 1 MHz input signal

Trigger gap edge 0.4 div At 1 MHz input signal in noise

trigger multiply by 2

FALSE TRIGGERS 1:100 000 See Note 1

Note 1: These values are not tested in production and are based on theoretical estimates and

laboratory tests.

2.4 EVENT COUNTER

EVENT delay PM3384B/94B In trigger modes EDGE and

LOGIC.

PM3370B/80B/90B In trigger modes EDGE and

GLITCH

Event count 1 to 16384 See Note 1

Event source PM3384B/94B CH1 to CH4 PM3370B/80B/90B CH1, CH2, EXT TRIG

Event slope selection + or -

Event clock sensitivity DC to 50 MHz 0.5 div

Event level 8 div

Max. count frequency 50 MHz typical value

Note 1: In digital mode, triggered DTB in combination with Event is not possible

2.5 HOLD-OFF

HOLD OFF SETTING A: Minimum 2 µs or 3 divisions

of MTB setting Whichever is greater A: Maximum 2s or 20 divisions

of MTB setting Whichever is smaller D: Minimum 4 ms See Note 1 D: Maximum 20 divisions of

MTB setting

Note 1: For total hold off time, the process time must be included. See also ACQUISITION TIME.

2 - 16 CHARACTERISTICS

CHARACTERISTICS ADDITIONAL INFORMATIONSPECIFICATIONS

2.6 PROCESSING

2.6.1 Preprocessing

PREPROCESSING FUNCTIONS See Note 1

Invert CH2; CH4

Add CH1+CH2; CH3+CH4;

See Note 2

Subtract CH1-CH2; CH3-CH4;

See Note 2 D: Peak detection Real time only D: Average See Note 3 D: Envelope

Note 1: These functions are performed before the acquisition data is stored in the acquisition

registers. PM3370B/80B/90B; offer two channels, CH1 and CH2.

Note 2: Dynamic range in digital mode ±5 div.

Note 3: Average factor 2 to 4096 in power of 2 sequence.

2.6.2 Register Processing (Digital Mode)

Add See Note 2 Sub See Note 2 Mul See Note 2 Filter LF filter with adjustable

-3dB point

Note 1: There may be run two processes simultaneously. The acquisition registers can also be used

as source registers. The result from process one will be stored in memory one. The result from process two will be stored in memory two.

Note 2: The source can be any trace from any register except the result register. The result can be

scaled.

CHARACTERISTICS 2 - 17

CHARACTERISTICS ADDITIONAL INFORMATIONSPECIFICATIONS

2.7 TRACE MEASUREMENTS (DIGITAL MODE)

TRACE MEASUREMENTS FUNCTIONS See Note 1 Horizontal Frequency

Period PM3370B/80B/90B: Pulse width CH1, CH2 Rise / fall

Vertical (with or without offset) Mean

RMS Maximum Minimum Peak/peak PM3370B/80B/90B: Low CH1, CH2 High Overshoot Preshoot Duty cycle Delay See Note 2

Note 1: These measurements can be performed on traces stored in the acquisition and memory

registers.

Note 2: In PM3370B/80B/90B also available for EXT trigger source and external trigger memory.

2.8 CURSORS

2.8.1 Cursor Control

NUMBER OF CURSORS 4

CURSOR RELATION Screen Free D: Trace Follows the trace

CURSOR MODES Time

Amplitude Both Only screen cursor

Amplitude cursor modes Absolute

Ratio See Note 1

Time cursor modes Absolute

Ratio See Note 1

Phase cursor Modes Absolute See Note 1

Ratio

Note 1: The ratio range is 0% to 999% where 100% corresponds to the value in the cursor read out

at the moment that the "∆T=100%" button is pressed.

2 - 18 CHARACTERISTICS

CHARACTERISTICS ADDITIONAL INFORMATIONSPECIFICATIONS

2.8.2 Cursor Readouts

CURSOR READOUTS dV

dT See Note 1 V to GND 1/dT See Note 1 dQ(Q1, Q2) See Note 2 T-trig See Note 3

READOUT RESOLUTION 3 digits

Note 1: In the "MTB + DTB timebase" and "DTB", all waveform operations and measurements are

performed on the DTB traces.

Note 2: Refer to trigger point (Q1, Q2)

Refer to start of trace (Trace in memory, Q1 and Q2).

Note 3: Gives time differences (delta) between the cursor position and the trigger point (for both

cursors).

2.8.3 Cursor Accuracies ( Analog Mode)

Voltage measurements Note 1 Manual ±1% of FULL SCALE

Time measurements Note 2 Unmagnified timebase ±1% of FULL SCALE

Magnified timebase up to 10 ns/div ±1.4% of FULL SCALE

Magnified timebase in 5 ns/div and 2 ns/div ±2.2% of FULL SCALE

Note 1: Measured with 1 kHz square wave within central 6 div.

Note 2: within central 8 div.

2.8.4 Cursor Accuracies (Digital Mode)

ERROR LIMIT VERTICAL See vertical accuracy

ERROR LIMIT HORIZONTAL See horizontal accuracy

CHARACTERISTICS 2 - 19

CHARACTERISTICS ADDITIONAL INFORMATIONSPECIFICATIONS

2.9 DIGITAL ACQUISITION

2.9.1 Modes

MODES Select one: Recurrent

Single shot/scan Roll Stop on trigger continuous

2.9.2 Sample Rate

Real time Max. Sample 250 ns/div to 200s/div

rate 200MS/s See Note 1

Equivalent time: Random sampling See Note 1

PM3390B/94B Max. 25GS/s 2 ns/div to 0.2 µs/div

PM3370B/80B/84B Max. 10GS/s 5 ns/div to 0.2 µs/div

Note 1: Sampling rate depends on time/division setting.

2.9.3 Multiplexed Channels

The 4 channel instruments have 4 channels configured as 2 + 2. This implies, that the channels CH1 and CH2 are multiplexed with the channels CH3 and CH4 to share the same dual channel digitizer. The Ext.Trig. channel (TRIG VIEW) is multiplexed the same way as CH4.

Multiplexed channels (CH1 and CH2) or (CH3 and CH4) simultaneously See Note 1 Any other combination for timebase settings 200s/div to 10 µs/div CHOPPED See Note 2 5 µs/div to 2 ns/div ALTERNATED Max. Chop freq. 5 MHz

Note 1: At 250 ns/div each of the four channels is acquired in alternated mode.

Note 2: When peak detection is activated the multiplexing is in alternating mode.

2 - 20 CHARACTERISTICS

CHARACTERISTICS ADDITIONAL INFORMATIONSPECIFICATIONS

2.9.4 Trace Memory

PM3384B/PM3394B This digitizer has a total acquisition memory size of 32K bytes. To apply this memory as efficiently as possible, it is shared by all channels connected to it. The following section summarizes the effects:

Record length normal 1 to 4 channels selected 512 samples/channel

Record length ’Max’ See Note 1 3 or 4 channels selected 8K samples/channel 2 of 4 channels selected 16K samples/channel 1 of 4 channels selected 32K samples

Display 501 samples/trace

PM3370B/80B/90B: This digitizer has a total acquisition memory size of 8K bytes. To apply this memory as efficiently as possible, it is shared by all channels connected to it. The following section summarizes the effects:

Record length normal 1 and 2 channels selected 512 samples/channel See Note 2

Record length ’Max’ See Note 1 and 4 2 channels selected 2K samples/channel See Note 2 2 channels selected 4K samples/channel See Note 3 1 of 2 channels selected 8K samples See Note 3

Display 501 samples/trace

Note 1: When peak detection or envelope is activated, all "max" record length figures have to be

divided by 2 because samples are stored as peak/peak combinations.

Note 2: Trigger view possible.

Note 3: No trigger view possible.

Note 4: When extended memory option is installed total acquisition memory is 32K bytes, shared

by both channels and external trigger. This results in the following max. record lengths: 2 channels and trig.view 8K samples/channel. 2 channels, no trig.view 16K samples/channel. 1 of 2 channels, no trig.view 32K samples/channel.

CHARACTERISTICS 2 - 21

CHARACTERISTICS ADDITIONAL INFORMATIONSPECIFICATIONS

2.9.5 Acquisition Time

The process time between acquisitions depends from the selected settings and the selected processing. Therefore it is not possible to catch the process time between acquisitions in a formula. The next table gives an indication of the performance of the processing capabilities.

Process time between acquisitions 500 ns/div See Note 1 one channel Holdoff is min and no no trigger delay processes or acquisition length = 512 6 ms measurements are

active

500 ns/div two channel Holdoff is min and no no trigger delay other processes or acquisition length = 512 measurements are average = 8 16 ms active

Equivalent time See Note 2 Timebase:

- at 2 ns/div 2s

- at 0.2 µs/div 100 ms

Note 1: Time required to fill the acquisition record at the sampling rate corresponding with the

selected timebase setting is not included.

Note 2: After the specified time, there is a 99% probability of all sample positions being updated to

the new acquisition. Trigger frequency >2 kHz. These values are not tested in production and are based on theoretical estimates and laboratory tests.

2.9.6 Resolution

ACQUISITION RESOLUTION 8 bits over 10.24 divisions

2.9.7 Registers

NUMBER OF REGISTERS Including current acquisition Acquisition length: One set contains: PM3384B/94B:

- Normal 51 sets Four traces

- Max: -4x8K 3 sets Four traces

-2x16K Two traces

-1x32K One trace

WORD LENGTH 16 bits

PM3370B/80B/90B: Note 1

- Normal 9 sets Two traces + Trig.View

- Max: -2x2K 3 sets Two traces

-2x4K Two traces

-1x8K One trace

WORD LENGTH 16 bits

Note1: When extended memory installed: number of register, equal to four channel models. One

set contains max. two traces+ trig.view.

2 - 22 CHARACTERISTICS

CHARACTERISTICS ADDITIONAL INFORMATIONSPECIFICATIONS

2.9.8 Register Manipulations

Clear The contents of the selected

Save The contents of the acquisition

selected register

Copy The contents of a selected

selected register

Recall The register can be made

visible on the display or can be

removed from the display

2.9.9 Digital Acquisition Accuracies

SAMPLING RATE ERROR ±0.01% X-tal

TIME UNCERTAINTY At double sampling rate ±100ps

2.10 FRONT PANEL MEMORY

Memory size 10 fronts

2.11 BLANKING OR Z-AXIS (ONLY FOR ANALOG TRACE)

Input connector BNC Input impedance 10 kΩ Input coupling dc Max input voltage ±10V Input voltage unblank 0.5V or less See Note 1 Input voltage blanked + 2.4 V or more See Note 1 Response time 80 ns Rise time 2 ns

Note 1: Half tones are possible at input voltages between +0.8V and +2.4 V.

Blanking has only effect on the trace in analog mode.

CHARACTERISTICS 2 - 23

CHARACTERISTICS ADDITIONAL INFORMATIONSPECIFICATIONS

2.12 DISPLAY

2.12.1 CRT

CRT Deflection Electrostatic Vector Dimensions (hxw) 80 mm x 100 mm 8 x 10 divisions Phospor Standard Green GH (P31)

GRATICULE Fixed

Y-AXIS ORTHOGONALITY 90 ° ±0.5 °

ACCELERATING VOLTAGE 16.5 kV Writing speed >1.8cm/ns

TRACE ROTATION Screwdriver adjustment Min. range 10 ° External field <0.1 mT Min. overrange 2 °

TRACE DISTORTION At center of screen <0.3 mm Deviation from straight

line inside 6 x 8 div

Else <1.0 mm

2.12.2 Modes

PRESENTATION MODES Y versus T

Y versus X

2.12.3 Vertical Display Manipulations (Digital Mode)

Linear Linear interpolations between

measured dots Sine Sine like interpolation between

measured dots

Vertical magnify 2, 4, 8, 16, 32

Windows 1, 2, 4 Each trace has his own place

on the screen PM3384B/94B max. 4 traces PM3370B/80B/90B max. 3 traces

Recall trace Each trace can be made

visible on the screen or can be

removed from the screen.

Note 1

Vertical position ± 8 div Each trace can be moved over

8 divisions

Max. displayable traces on screen 8 See Note 1

Note 1: At least one trace is visible.

2 - 24 CHARACTERISTICS

CHARACTERISTICS ADDITIONAL INFORMATIONSPECIFICATIONS

2.12.4 Horizontal Display Manipulations (Digital Mode)

TIMEBASE MAGNIFICATION 2, 4, 8, 16, 32 See Note 1

Note 1: For acquisition depth greater than 512 byte it is possible to make the magnification factor

less than one (compress mode) to display the complete trace on the screen.

2.13 EXTERNAL INTERFACES

2.13.1 Calibrator

WAVEFORM Shape square wave

INTERNAL IMPEDANCE Value 1200Ω

OUTPUT VOLTAGE Peak-peak value 600 mV See Note 1 To le ra nc e 1 %

OUTPUT CURRENT Peak-peak value 0.5 mA See Note 2

FREQUENCY Value 2 k H z To le ra nc e ±20%

Note 1: Positive going with respect to ground; Open voltage (halves when terminated with 1200Ω).

Note 2: When output short circuited (halves when terminated with 1200Ω).

2.13.2 Standard external interface

TYPE OF INTERFACE RS 232-C CPL (compact programming

language) See operating guide

PINNING PIN I/O NAME 1 - - Not connected 2 I RXD Received data 3 O TXD Transmitted data 4 O DTR Data terminal ready 5 - GND Signal ground 6 I DSR Data set ready 7 O RTS Request to send 8 I CTS Clear to send 9 - - Not connected

TRANSMISSION MODES Asynchronous

Full duplex

HANDSHAKE Hardware RTS/CTS and Default: not active

DSR/DTR See Note 1

Software XON/XOFF Default: not active

See See Note 1

CHARACTERISTICS 2 - 25

CHARACTERISTICS ADDITIONAL INFORMATIONSPECIFICATIONS

BAUDRATE 75,110,150,300 Receiving and

600,1200,2000, transmitting 2400,4800,9600 Default:1200 19200,38400 See Note 1

NUMBER OF STOP BITS 1 PARITY odd,even,or no Default: no parity

See Note 1

CHARACTER LENGTH 7 or 8 Default:8

See Note 1

ERROR RESPONSE See CPL, Chapter 6

in Users Manual

ELECTRICAL TXD and RXD Spacing "0" ≥ +3V Marking "1" ≤ -3V

RTS,CTS,DSR and DTR ON ≥ +3V OFF ≤ -3V

Current output ≤10mA

Impedance Output 300Ω ±10% Input ≥3 kΩ ≤7kΩ

Voltage Output ≥ -12V ≤ +12V Input ≥ -25V ≤ +25V

Connector Shielded 9 pole RAP male connector

according MIL-C-24308

Note 1: Selectabele via UTILITY menu and CPL. When battery installed, same as last power-off

value.

2.13.3 Optional external interfaces

IEEE ANSI/IEEE 488.2 SCPI See section 1.20.5

2 - 26 CHARACTERISTICS

CHARACTERISTICS ADDITIONAL INFORMATIONSPECIFICATIONS

2.13.4 Printers and plotters support

PRINTERS HP-thinktjet

LQ1500 FX80 HP-LASER HP-540

PLOTTERS HPGL

HP7440 HP7550 HP7475A HP7478A PM8277 PM8278

2.13.5 Real Time Clock

(RTC)

Select: Time of trigger Note 1

or Time of pressing hardcopy button Note 2

Note1: These times may be the same when it is not possible to reconstruct the time of trigger.

Note2: - Stamped on any hardcopy via hardcopybutton

- Time is part of delta transfer waveform.

2.14 AUTO SET & CALIBRATION

2.14.1 Auto Set

Vertical deflection 2...5 div Note 1

Horizontal deflection Max. 6 periods on CRT Note 1

at input signal 10 mV...25V 40 Hz...30 MHz

Note 1: AUTO SET selects the proper channel, sets vertical deflection, timebase speed, intensity,

and triggering for an easy-to-read display of input signals, or the user programble AUTO SET items.

2.14.2 Calibration

CALIBRATION FACILITIES Auto cal See Note 1

Note 1: Calibrates vertical offset and gain, horizontal offset and gain and sweep time, trigger offset

and gain.

CHARACTERISTICS 2 - 27

CHARACTERISTICS ADDITIONAL INFORMATIONSPECIFICATIONS

2.15 POWER SUPPLY AND BATTERY BACKUP

2.15.1 Power Supply

LINE VOLTAGE

ac (rms) Operation 100V to 240V To le ra nc e ±10%

LINE FREQUENCY Nominal 50 Hz to 400 Hz Limits of operation 45 Hz to 440 Hz

LINE WAVEFORM At nominal source Max. waveform voltage deviation factor 10% Crest factor 1.27 to 1.56

ALLOWABLE POWER INTERRUPTION 20 ms See Note 1

POWER CONSUMPTION Without options 115W Max. power consumption 130W

POWER CORD Length 2.1m (82.7 in) Power plug Nat.version

Note 1: At the lowest allowable source voltage. After this time the oscilloscope data is saved before

the instrument goes down, and an automatic power-on sequence starts after restoration of the power source voltage.

2.15.2 Battery Backup

DATA AND SETTINGS RETENTION See Note 1

Retention time 2 years Batteries: Recommended type LR 6 See Note 2 Quantity 2

Temperature range 0..+70 °C See Note 3

Note 1: When instrument is switched off or during power failure.

Note 2: According to IEC 285 (=Alkaline Manganese Penlight Battery).

Note 3: At -40 to 0 °C, settings retention is uncertain. It is advised to remove batteries from

instrument when it is stored during longer periods (>24 hours) below -30 °C or above 60 °C. UNDER NO CIRCUMSTANCES SHOULD BATTERIES BE LEFT IN THE INSTRUMENT AT TEMPERATURES BEYOND THE RATED RANGE OF THE BATTERY SPECIFICATION

2 - 28 CHARACTERISTICS

CHARACTERISTICS ADDITIONAL INFORMATIONSPECIFICATIONS

2.16 MECHANICAL CHARACTERISTICS

PORTABLE VERSION Dimensions: Handles excluded Length 481 mm (19 in) Add 5 mm (0.2 in) for cover

Add 65 mm (2.5 in) for handle

Width 341 mm (13,5 in) Add 50 mm (2 in) for handle

Height 139 mm ( 5,5 in) Add 8 mm (0.3 in) for feet

Weight: Instrument 9.5 kg (19,7 lb)

COOLING Regulated No air filter

Forced air

2.17 ENVIRONMENTAL CHARACTERISTICS

2.17.1 General

The characteristics are valid only if instrument is checked in accordance with the official checking procedure. Warm up and recovery time are in accordance with MIL-T 28800D par. 3.7.1.1.

The instrument meets the environmental requirements of MIL-T-28800D Type III Class 3, Style D, Color R (unless specified otherwise).

2.17.2 Environmental

TEMPERATURE See Note 1 Operating: min.low temp. 0 °C max.high temp. +50 °C Nonoperating (storage): min. low temp. -40 °C max. high temp. +70 °C

MAX. HUMIDITY See Note 1 Operating and Non operating (storage) 95% Relative humidity

noncondensing

MAX. ALTITUDE See Note 2 Operating 4.6 km (15000 ft) See Note 3 Nonoperating (storage) 12 km (39000 ft)

VIBRATION (OPERATING) See Note 4 Freq. ranges: g level at max. freq.:

5 Hz to 15 Hz 0.7 at 15 Hz 16 Hz to 25 Hz 1.3 at 25 Hz 26 Hz to 55Hz 3 at 55 Hz

At each freq.range: Cycling time 15 min Resonance search 5 min Resonance dwell 10 min See Note 5

CHARACTERISTICS 2 - 29

CHARACTERISTICS ADDITIONAL INFORMATIONSPECIFICATIONS

Note 1: In accordance with MIL-T-28800D par. 3.7.2.1.1. (FIGURE 2).

Note 2: In accordance with MIL-T 28800D par. 3.7.3.

Note 3: Maximum operating temperature derated to 3 °C for each km above sea level

Note 4: In accordance with MIL-T-28800D par. 3.7.4.1.

Note 5: At each resonance frequency (or at 33 Hz if no resonance was found).

SHOCK (OPERATING) See Note 6 Amount of shocks total 18 each axis 6 3 in each direction Shock waveform half sinewave Duration 6-9 ms Peak acceleration 400 m/s

BENCH HANDLING See Note 7 Meets requirements of MIL-ST-810

method 516 procedure V

TRANSPORTATION Drop height 0.76m See Note 9

SALT ATMOSPHERE Structural parts See Note 8

Note 6: In accordance with MIL-T-28800 par. 3.7.5.1.

Note 7: In accordance with MIL-T-28800 par. 3.7.5.3.

Note 8: In accordance with MIL-T-28800 par. 3.7.8.1.

Note 9: Drop in shipping container on 8 corners, 12 edges, 6 surfaces.

2.17.3 EMI

2.17.3.1 Meets MIL-T 28800D Type III Class 3 (Navy requirement, unless specified otherwise).

Meets MIL-STD-461C as follows:

- Conducted Emissions Part 2 CEO1 (Narrow band)

Part 4 CEO3

- Conducted Susceptibility Part 2 CSO1

Part 5 CSO6 (Limited to 300V)

- Radiated Emissions Part 5,6 REO1

Part 2 REO2 (1 GHz max)

2.17.3.2 CE (89/336EEC)

Meets harmonized product requirements of 89/336EEC, EN50081.1 and EN50082.1 with addition of the tables 1 to 8.

2.17.3.3 VDE requirements

The instrument meets the requirements of VDE 0871 Grenzwert-klasse B.

2 - 30 CHARACTERISTICS

CHARACTERISTICS ADDITIONAL INFORMATIONSPECIFICATIONS

2.17.3.4 Additional EMI requirements

The instrument is tested in accordance with IEC 351-1 par. 5.1.3.1. The maximum deflection factor is 7 mm/mT (0.7 mm/gauss). This value measured with the instrument in a homogeneous field (in any direction with respect to the instrument) with a flux intensity (peak to peak value) of 1.42 mT (14.2 gauss) and of symmetrical sine wave form with a frequency of 45 Hz to 66 Hz.

The PM3370B, PM3380B and PM3384B, including standard accessories, conform with the EEC Directive 89/336 for EMI immunity, as defined by IEC 801-3, with the addition of the following tables.

Table 1.

Susceptibility: no visible disturbance

Frequency range: 10 kHz .. 25 MHz

E = < 0.1V/m E = 1 V/m E = 3 V/m

Stand alone 2 mV/div ... 5 V/div 2 mV/div ... 5 V/div 2 mV/div ... 5 V/div

With PM9010/091 2 mV/div ... 5 V/div 20 mV/div ... 5 V/div 100 mV/div ... 5 V/div

Table 2.

Susceptibility: no visible disturbance

Frequency range: 25 MHz ... 1 GHz

E = < 0.1V/m E = 1 V/m E = 3 V/m

Stand alone 2 mV/div ... 5 V/div 2 mV/div ... 5 V/div 10 mV/div ... 5 V/div

With PM9010/091 2 mV/div ... 5 V/div 100 mV/div ... 5 V/div 500 mV/div ... 5 V/div

Table 3.

Susceptibility: disturbance less than 10 % of full scale

Frequency range: 10 kHz .. 25 MHz

E = < 0.1V/m E = 1V/m E = 3 V/m

Stand alone N/A N/A N/A

With PM9010/091 N/A 5 mV/div ... 10 mV/div 20 mV/div ... 50mV/div

Table 4.

Susceptibility: disturbance less than 10 % of full scale

Frequency range: 25 MHz ... 1 GHz

E = < 0.1V/m E = 1V/m E = 3 V/m

Stand alone N/A N/A 2 mV/div ... 5 mV/div

With PM9010/091 N/A 20 mV/div ... 50 mV/div 50 mV/div .... 200 mV/div

For conditions not specified in tables 1 - 4, a susceptibility effect of more than 10 % is possible.

CHARACTERISTICS 2 - 31

CHARACTERISTICS ADDITIONAL INFORMATIONSPECIFICATIONS

The PM3390B and PM3394B, including standard accessories, conform with the EEC Directive 89/336 for EMI immunity, as defined by IEC 801-3, with the addition of the following tables.

Table 5.

Susceptibility: no visible disturbance

Frequency range: 10 kHz .. 25 MHz

E = < 0.1V/m E = 1 V/m E = 3 V/m

Stand alone 2 mV/div ... 5 V/div 2 mV/div ... 5 V/div 2 mV/div ... 5 V/div

With PM9020/091 2 mV/div ... 5 V/div 20 mV/div ... 5 V/div 50 mV/div ... 5 V/div

Table 6.

Susceptibility: no visible disturbance

Frequency range: 25 MHz ... 1 GHz

E = < 0.1V/m E = 1 V/m E = 3 V/m

Stand alone 2 mV/div ... 5 V/div 2 mV/div ... 5 V/div 10 mV/div ... 5 V/div

With PM9020/091 2 mV/div ... 5 V/div 100 mV/div ... 5 V/div 200 mV/div ... 5 V/div

Table 7.

Susceptibility: disturbance less than 10 % of full scale

Frequency range: 10 kHz.. 25 MHz

E = < 0.1V/m E = 1V/m E = 3 V/m

Stand alone N/A N/A N/A

With PM9020/091 N/A 5 mV/div ... 10 mV/div 10 mV/div ... 20 mV/div

Table 8.

Susceptibility: disturbance less than 10 % of full scale

Frequency range: 25 MHz ... 1 GHz

E = < 0.1V/m E = 1V/m E = 3 V/m

Stand alone N/A N/A 5 mV/div

With PM9020/091 N/A 20 mV/div ... 50 mV/div 50 mV/div ... 100 mV/div

For conditions not specified in tables 5-8,, a susceptibility effect of more than 10 % is possible.

2 - 32 CHARACTERISTICS

CHARACTERISTICS ADDITIONAL INFORMATIONSPECIFICATIONS

2.18 SAFETY

MEETS REQUIREMENTS OF IEC 348 Class I See Note 1

UL 1244 See Note 2 CSA C22.2 No231 See Note 2 VDE 0411 See Note 1

APPROVALS (applied for) CSAC22.2 No231

MAX. X-RADIATION MIL-T-28800D

par. 3.9.3.4.a

Note 1: Except for power cord, unless shipped with universal European power cord.

Note 2: Except for power cord, unless shipped with North American power cord.

2.19 ACCESSORIES

PACKED WITH INSTRUMENT Signal input 2x10 MΩ 10:1 probe With readout (1.5 m)

Contrast filter Blue Front cover Can be locked on instr.

Operating guide

Reference manual

2.20 OPTIONS & OPTIONAL VERSIONS

2.20.1 Options Line cord

LINE CORD Universal

European In accordance with VDE

North American In accordance with CSA, UL

United Kingdom In accordance with BSI

Australian In accordance with SAA

Swiss In accordance with SAV

2.20.2 Options digital versions

EXTERNAL INTERFACES IEEE Factory installed only INTERNAL EXTENSIONS EXTENDED

MEMORY Factory installed only MATH+ Factory installed only

CHARACTERISTICS 2 - 33

CHARACTERISTICS ADDITIONAL INFORMATIONSPECIFICATIONS

2.20.3 Options analog

EXTERNAL INTERFACES Y-out, MTB gate, See Note 1,

DTB-gate, ExtTrig. Factory installed only IEEE Factory installed only

Note 1: Ext trig is a standard feature in PM3370B/80B/90B. For characteristics refer to chapter 1.3.5.

2.20.4 Specification optional outputs

Y SIGNAL OUT BNC Source CH1 Coupling as CH1 Voltage: into 1 MΩ 20mV/div ±10% into 50Ω 10mV/div ±10% Freq. response: Terminated with 50Ω

PM3390B/94B dc to 200 MHz PM3380B/84B dc to 100 MHz PM3370B dc to 60 MHz

Dynamic range ±10 div At 50 MHz

MTB GATE OUT Connector BNC Output impedance 1 kΩ Voltage:Timebase not running 0.2 ± 0.2V Timebase running 3.7 ± 1.3V

DTB GATE OUT Connector BNC Output impedance 1 kΩ Voltage:Timebase not running 0.2 ± 0.2V Timebase running 3.7 ± 1.3V

2 - 34 CHARACTERISTICS

CHARACTERISTICS ADDITIONAL INFORMATIONSPECIFICATIONS

2.20.5 Specification External trigger option

Valid for ext trig option in PM3384B/94B

(External trigger input is a standard feature in PM3370B/80B/90B)

SOURCE

SOURCE(S) MTB-triggering CH1 ... CH4

External Line

INPUT CHARACTERISTICS

INPUT CONNECTOR BNC At rear of instrument

INPUT IMPEDANCE Measured at freg. <1MHz R parallel - value 1 MΩ

- tolerance ±1%

C parallel - value 25 pF

- tolerance ±5 pF

DYNAMIC RANGE Up to 10 MHz ±2.5V Symmetrical

INPUT VOLTAGE LIMITS See note 1

(d.c. + a.c. peak) ±400V See note 2

Note 1: Apparaturs should be properly grounded through the protective ground conductor of the

power cord.

Note 2: Up to 10 kHz; >10 kHz see figure 1.1.

SENSITIVITY

EDGE TRIGGER SENSITIVITY See note 3 d.c. to 5 MHz 100 mV d.c. to 10 MHz 200 mV

Note 3: In noise-trigger multiply stated value by 2.

TRIGGER LEVEL

TRIGGERLEVEL Range ±1.45V See note 4 Accuracy ≤0.45V at 1 kHz input signal triggercoupling DC

Note 4: With Level-pp on the range is restricted to the peak-peak value of the trigger signal.

CHARACTERISTICS 2 - 35

2.20.6 Specification IEEE-OPTION

TYPE OF INTERFACE ANSI/IEEE 488.2 SCPI (see SCPI programming

manual) See Note 1

INTERFACE REPERTORY Source handshake SH1 Complete capability Acceptor handshake AH1 Complete capability Talker T5 Basic talker: yes

Serial poll : yes

Talk only : yes

Unaddress if MLA: yes Listener L3 Basic listerner: yes

Listener only : yes

Unaddress if MTA: yes Service request SR1 Complete capability Remote local RL1 Complete capability Parallel poll PP0 No capability Device clear DC1 Complete capability Device trigger DT1 Complete capability Controller C0 No capability

ELECTRICAL INTERFACE Busdrivers E2 Three state (true=0

to 0.8V;false=2 to 5V)

Connector Shielded Amphenol type

57FE-20240-20SD35 Pin 1 ... 4 DIO1...DIO4 Pin 13 ... 16 DIO5...DIO8 Pin 18 ... 23 GND Pin 24 Logic GND Pin 5 EOI Pin 6 DAV Pin 7 NRFD Pin 8 NDAC Pin 9 IFC Pin 10 SRQ Pin 11 ATN Pin 12 Shield Pin 17 REN

FUNCTION SELECTION Via UTILITY-MENU Busaddress

Default: 8

See Note 2

INTERFACE STATUS INDICATOR On screen

Note 1: Talker/listener

Note 2: When battery installed, same as last power-off value.

2 - 36 CHARACTERISTICS

DESCRIPTIONS 3 - 1

Figure 3.1 Blockdiagram, Di gital part

3 - 2 DESCRIPTIONS

Figure 3.2 Blockdiagram, Analog p art 1

DESCRIPTIONS 3 - 3

Figure 3.3 Blockdiagram, Analog part 2

3 - 4 DESCRIPTIONS

DESCRIPTIONS 3 - 5

3 DESCRIPTIONS

3.1 GENERAL DESCRIPTION

3.1.1 Introduction to oscilloscope family

The family consists of seven digital general purpose oscilloscopes with model numbers PM3370B, PM3380B, PM3384B, PM3390B, and PM3394B. Differences between these models are the vertical bandwidth, the features of the vertical channels and the presence of switcheable 50Ω input impedance.

Vertical bandwidth is 60, 100 or 200 MHz. The ’true 4 channel’ oscilloscopes have four channels with a wide range of input sensitivities. The economy versions offer 2 channel and on External Trigger input. The table below explains the differences.

The printed circuit boards (units) and mechanical parts in this family of oscilloscopes have a high degree of standardization. The ordering codes for these parts are listed in chapter 4 ’Parts’.

3.1.2 Introduction to descriptions

Section 3.2 contains the description of the block diagram. The information in this diagram is presented in such a way that the link with the circuit diagrams in chapter 5 ’Unit descriptions’ can be found easily.

In chapter 4 ’Parts’ all general parts are described. These are, for example, the printed circuit boards (units), cables and mechanical parts that are not fixed to a specific unit. Cables are clearly identified on an interconnection diagram.

In chapter 5 the units are described in sequence of their number (A1, A2, A3, ...). Per unit the following information is given:

- Description

- Signal name list

- Unit lay-out (and location raster for the large units)

- Circuit diagrams (see note)

- Parts lists

Note: Some diagrams are dedicated to one or two type numbers. This is indicated in the diagram

description at the bottom.

Type number Bandwidth Sample rate Number of

channels

Input impedance

PM3370B 60 MHz 200 MS/s 2 1 MΩ PM3380B 100 MHz 200 MS/s 2 1 MΩ PM3384B 100 MHz 200 MS/s 4 1 MΩ PM3390B 200 MHz 200 MS/s 2 1 MΩ/50Ω PM3394B 200 MHz 200 MS/s 4 1 MΩ/50Ω

3 - 6 DESCRIPTIONS

3.1.3 Explanation of signal names

Throughout the circuit diagrams signal names are used. These names make it easier to trace a signal going from one circuit diagram to another. In many cases the signal name and also the component to which a certain node is connected are given in the circuit diagrams.

For every printed circuit board a signal name list is shown in alphabetical order. It shows:

- The meaning/function of the signal.

- The signal source(s).

- The signal destination(s).

Signal names are chosen up in a logical way. Basically signal names (e.g. MTBPPLEV-HD) consist of two parts:

- A functional part with a maximum of 10 characters (e.g. MTBPPLEV). The part is arranged such

that recognition is easy.

- An extension with a maximum of 2 characters (e.g. HD). The extension is not always used.

The first characters (e.g. MTB) in the functional part indicate the part of the oscilloscope. Examples are:

- AT1, AT2, AT3, AT4: the input attenuators of channel 1, 2, 3, 4.

- PA1, PA2, PA3, PA4: the preamplifiers of channel 1, 2, 3, 4.

- FNC1, FNC2, FNC3, FNC4: the function selection parts of channel 1, 2, 3, 4. MTR: main time base

triggering.

- MTB: main time base.

- DTR: delayed time base triggering.

- DTB: delayed time base.

The last set of characters in the functional part (e.g. PPLEV) indicates the function: in this example Peak-Peak LEVel triggering is switched on/off.

The first character of the extension indicates if the signal is active when high (H), active when low (L) or that this is not fixed (X, for instance the output of a counter).

The second character of the extension indicates the kind of logic. Possible abbreviations are: T (TTL), E (ECL), A (analog signal), C (CMOS 12 ... 15V) and D (CMOS 5V).

3.1.4 Voltage values in the circuit diagrams

Throughout the circuit diagrams voltage values are indicated. This facilitates fault finding in the vertical channels, triggering, time base and final amplifiers. Most of the voltages consist of an AC signal superimposed on a DC biasing voltage. Some of the AC voltages are small. They must be measured with an oscilloscope via a 1:1 probe and AC coupled input. The DC signal component is bigger and must be measured with the measuring oscilloscope with DC coupled input. The nodes where a signal can be measured are indicated with a dot on the p.c.b. lay-outs.

The oscilloscope under test must be prepared as follows:

- Connect the CAL voltage via a 10:1 probe with indication ring to the input of the suspected

channel.

- Press the STATUS and TEXT OFF key simultaneously to get a defined starting position.

- Press the AUTOSET key.

- Put AMPL/VAR of the active channel to 0.1 V: this should give 6 vertical divisions of signal on the

screen.

DESCRIPTIONS 3 - 7

Some important notes:

- To measure some signals, it is necessary to unlock units. Refer to chapter 8.5 for details on how

to proceed.

- The given AC and DC signals are average values: your oscilloscope under test may deviate from

the values given in the circuit diagrams. 100 MHz clock signals and fast switching signals on the digitizer unit A8 require a measuring oscilloscope with a bandwidth of 200 MHz or more.

- Although the oscilloscope is in standard setting, it may be necessary to do manual selections for

certain measurements. To measure e.g. the delayed time base and its triggering, it is necessary to activate DTB and to select a channel as DTB trigger source.The same is valid for digitizer functions like logic pattern, timed pattern, double sampling speed (250 ns/div).

- When measuring in the final amplifiers, it advised to switch off all text. This gives ’cleaner’ signals

at the outputs. The text is written inbetween the signal at a random basis.

- Measuring the outputs of the final Y amplifier must be done with a 10 kΩ resistor between probe

tip and signal. This avoids oscillations.

- Refer to chapter 8.11.4.7 (Repair tools/DAC) on how to check the range of DAC-generated

adjustment voltages.

3.2 BLOCK DIAGRAM DESCRIPTION

3.2.1 Introduction

This block diagram and description are based upon the most complex version of this family of digital oscilloscopes. Therefore there may be minor differences between your oscilloscope and the block diagram and its description. Where differences may occur it is mentioned in the text.

The item numbers of active components are indicated each block of the diagram. This facilitates to make the link with the circuit diagrams.

The oscilloscope is controlled by a microprocessor that connects to many blocks. Therefore throughout this block diagram CONTROL CIRCUITS can be found that are controlled by the microprocessor. The output signals can be simple on/off signals e.g. to switch a certain vertical channel on and off. There are also adjustable dc voltages e.g. to determine the gain of a vertical channel. Blocks that are under control of the microprocessor have the input signal "µP". In the vertical, horizontal and time base sections, circuits are added for microcomputer controlled automatic calibration.

This description is divided according to the functional blocks that can be distinguished:

- Vertical channels: there are 4 vertical channels (part 1).

- Triggering and time bases: there are sections for main- and delayed time base (part 1).

- Final amplifiers: for vertical (Y) and horizontal (X) deflection, intensity (Z) and focusing contro (part 2)l.

- Front unit and microprocessor unit (part 2).

- Power supply unit (part 2).

- Digitizer unit (part 3).

Also the printed circuit boards (units) are indicated in the blockdiagram. These units are:

- Signal unit A1: is the largest of all and incorporates 4 vertical channels and main- and delayed

triggering and time base.

- Final XYZ amplifier A2: all final amplifiers are present here. A separate part is connected to the

CRT socket.

- Microprocessor unit A3.

- Front unit A4: incorporates most of the rotary knobs and keys.

- CRT controls unit A5: incorporates the rotary knobs for the display functions.

- Power supply unit A6: supplies various voltages to the other circuit boards.

- Digitizer unit A8: includes all digital storage circuitry.

- Motherboard A10: many signals are routed via this unit.

3 - 8 DESCRIPTIONS

3.2.2 Vertical channels

There are 4 vertical channels that are mainly identical. A difference is that the 200 MHz oscilloscope versions have a switchable 50Ω input impedance while the 100 MHz and 60 MHztypes do not have this feature. Another difference is between the 4 channel and the 2 channel versions. The 4 channel scopes have 4 identical vertical channels (CH1, CH2, CH3 and CH4) with an extensive range of input sensitivities. The various input sensitivities are made by combinations of settings of HIGH IMPEDANCE ATTENUATOR, LOW IMPEDANCE ATTENUATOR and PREAMPLIFIER. The 2 channel versions have 2 identical vertical channels (CH1 and CH2) with an extensive range of input sensitivities. Channel 1 operation and the differences with channels 2, 3 and 4 are now explained. In the 2 channel versions the channel CH3 is omitted and the EXT TRIG input has 2 switchable input sensitivities.

The CH1 input signal is applied to the INPUT COUPLING block. Here selection between ac or dc coupled input is done. Moreover in the 200 Mhz oscilloscopes selection between 50Ω and 1 MΩ input impedance is done here. A signal 50Ω PROTection signals via the CONTROL CIRCUITS to the microprocessor if the dissipation in the 50Ω termination resistor gets too high.

The block HIGH IMPEDANCE ATTENUATOR incorporates the attenuation coefficients /100, /10 and /1. This block has a fixed attenuation for the ExtTrig channel in the 2 channel oscilloscopes. The input signal originating from the AMPLITUDE CALIBRATOR is used to automatically calibrate the vertical channels. The AMPLITUDE CALIBRATOR is a generator that can deliver 8 different accurate voltages. The HIGH IMPEDANCE ATTENUATOR also comprises a high-frequency square-wave adjustment; this is done by adjustment of dc signal CAL.

The IMPEDANCE CONVERTER converts the input signal at high input impedance into an output signal at a low impedance. This block is followed by a LOW IMPEDANCE ATTENUATOR that makes the attenuation coefficients /2,5 and /1. This block has a fixed attenuation in the ExtTrig channel of the 2 channel oscilloscopes.

The PREAMPLIFIER incorporates gain/attenuation coefficients x1, x5, /2 and also continuous GAIN control via a microprocessor adjustable dc signal. The PREAMPLIFIER is followed by YFUNCTIONS CHANNEL 1. In this block the selection is achieved of vertical display via channel 1, Main Time Base (MTB) triggering via channel 1 and Delayed Time Base (DTB) triggering via channel

1. Also the filter for the Bandwidth Limiter (BWL), the vertical position control (POS) and an output to the digitizer (EXT). From Y-FUNCTIONS CHANNEL 1 the signal for the Y- OUTput socket is derived. The Y-FUNCTIONS blocks of channel 2 and 4 have an INVert function for signal inversion.

The selection of the vertical channel, MTB and DTB trigger source is initiated by the block DISPLAY MODE + TRIGGER SOURCE CONTROL. The channels and trigger sources to be displayed are controlled by the microprocessor (µP). In ALTernate display mode the switching between channels/trigger sources occurs at the end of the MTB sweep. The signal ALT controls this. For the vertical display mode CHOPpped a 2MHz CHOPPER OSCILLATOR is present. Display blanking during switching from one channel to another is done via signal CHP.

The selected vertical channel(s) are applied to the DELAY LINE DRIVER. This block is an amplifier that has the correct output impedance to drive the DELAY LINE. The DELAY LINE itself consists of a coaxial cable giving sufficient signal delay so that propagation delay in the trigger circuits is compensated. Because of this leading edges of fast-rising pulses can be made visible. The Y-OFFSET + TRACE SEPARATION block can influence the offset of the signal applied to the DELAY LINE DRIVER. This is used as offset compensation and also for TRACE SEParation in ALTernate Time Base mode.

The PROBE CALIBRATOR is a generator delivering a 2kHz/600mV square- wave signal. This signal can be used to adjust the square-wave response of attenuator probes.

DESCRIPTIONS 3 - 9

3.2.3 Triggering and time bases

The sections for Main Time Base (MTB) and Delayed Time Base (DTB) are for the greater part identical. Therefore the MTB part is extensively described and then the DTB part briefly. The EXTernal TRIGger input of the 2 channel versions is only different in the attenuator part, after that it is equal to and described as CH4.

Main Time Base Description.

The possible trigger sources are applied to the block MTB TRIGGER FILTERS + AMPLIFIER. The selection for triggering on the vertical channels 1, 2, 3 or 4 is done in the Y-FUNCTIONS blocks in the vertical section. Triggering is also possible on the LINE trigger signal that is derived from the mains. The MTB TRIGGER FILTERS + AMPLIFIER incorporates filters for HF- reject, LF-reject and ac or dc signal coupling. The block also incorporates the +/- slope selection. The dc control signal LEVEL MTB originating from the CONTROL CIRCUITS is routed via the PEAK-PEAK DETECTOR. This block limits in peak-peak mode the LEVEL MTB range just within the peak-peak value of the signal. For this purpose the trigger signal is applied to an input of the detector. The LEVEL MTB control signal is not limited if the peak-peak mode is inactive.

For triggering on TV synchronization pulses the blocks TV CLAMP CIRCUIT and TV SYNC SEPARATOR are used. The CLAMP CIRCUIT separates the synchronization pulses from the composite video signal. The video information is not necessary for triggering. The TV SYNC SEPARATOR filters out line, frame and field pulses. This is done for various TV systems including HDTV. A VSYNC output is connected to digitizer unit A8.

The block MTB TRIGGER FILTERS + AMPLIFIER sends trigger pulses to the MTB LOGIC. This logic is combined with the DTB LOGIC. The three output signals are used to start MTB (applied to MTB TIMING CONTROL), to switch intensity on and off (applied to Z CONTROL) and for ALTernate display switching (applied to DISPLAY MODE + TRIGGER SOURCE CONTROL). TV HOLD-LD is received from digitizer A8. TB40TXT and MTB trigger DSOM are applied to A8.

The MTB is based on the principle that selectable capacitors (inside block MTB TIMING) are charged with a selectable constant current (from MTB CURRENT SOURCE). This results in a sawtooth voltage across the capacitor(s) that rises linearly with the time. As a consequence a time-linear horizontal deflection is obtained. The sawtooth voltage is routed to the horizontal deflection part via the MTB SAWTOOTH PICK OFF. This block serves as a high to low impedance converter so that the load to the timing capacitor(s) is minimal. Various time base sweep speeds are obtained by selecting different combinations of current values and timing capacitors. The function MTB VARiable works via the MTB CURRENT SOURCE.

The MTB TIMING CONTROL discharges the capacitor(s) if the maximum level of the sawtooth is reached. The MTB TIMING CONTROL allows the charging process to start again if a trigger occurs. The functions X POSition, HOLD OFF and 10x MAGN are applied to and realized in the MTB TIMING CONTROL. HOLD OFF determines the time between discharge of the timing capacitors and the moment that a trigger pulse is allowed to start the MTB again.

The MTB TIMING CONTROL accomplishes the DELAY time function. The sawtooth voltage is compared with an adjustable dc voltage. The DTB is started where both voltages have the same level: this condition is signalled to the DTB LOGIC via signal START.

The MTB TIMING CONTROL also plays a role in the automatic MTB calibration. A reference voltage MTBCALREF is compared with the sawtooth voltage. The time necessary for the sawtooth to reach the MTBCALREF level is monitored by the microprocessor via signal MTBCAL. If necessary the MTB is readjusted. Automatic calibration of the X-path (including output circuit of MTB TIMING CONTROL) is done with accurate voltages from the block X DEFLECTION CALIBRATION.

Delayed Time Base Description.

The function of DTB TRIGGER FILTERS + AMPLIFIER is identical to the corresponding block in the MTB part. A "peak-peak detector" for LEVEL DTB is not present. The range of this control is always fixed and not related to the peak-peak level of the signal. Blocks for TV triggering are not present in the DTB section. TV triggering of the DTB occurs via output signals from the TV SYNC SEPARATOR in the MTB section.

3 - 10 DESCRIPTIONS

An output signal from DTB TRIGGER FILTERS + AMPLIFIERS can be used for X DEFLection (MTB and DTB are off then) via the block TIME BASE / X DEFLECTION INPUT CIRCUIT.

The function of DTB CURRENT SOURCE, DTB TIMING and DTB SAWTOOTH PICK OFF is identical to the corresponding blocks in the MTB section. For the DTB LOGIC there is an extra input signal START to start the DTB directly after the adjusted delay time. The START signal originates from the MTB TIMING CONTROL. DTB GATE and DTB trigger DSOD are applied to A8. The block AUTO CURSOR POSITION is used to position the voltage cursors automatically on the top and bottom level of the signal. The top and bottom levels are detected via the DTB triggering: the microprocessor scans the waveform by successively changing the DTB LEVEL and checking if triggers are still detected. Automatic calibration of the X-path (including output circuit of DTB TIMING CONTROL) is done with accurate voltages from the block X DEFLECTION CALIBRATION.

The DTB TIMING CONTROL is simpler than the corresponding block in the MTB. The functions DELAY and HOLD OFF are not present. DTB uses the MTB hold off time. This is due to the fact that the DTB can not run while the MTB does not.

X deflection selection and intensity control.

The block TIME BASE/X DEFLECTION INPUT CIRCUIT permits selection between horizontal deflection via MTB/DTB or via a signal selected via the DTB triggering (X DEFL mode).

The block Z-CONTROL controls the intensity of the signal on the screen. This also affects the focusing. Signal intensity and the intensity of text is determined in the final amplifier section.

The signal intensity is determined by the MTB LOGIC (light on/off) and DTB LOGIC (intensified part during run of DTB). The ratio between intensity of MTB and DTB is determined by control signal INTENS RATIO. Input signal CHP gives display blanking in vertical display mode chopped when switching from one channel to another. The control signal TRACE INTENS is influenced by the control with the same name. Intensity can also externally be controlled via input socket EXT Z MOD.

3.2.4 Final amplifiers

The final amplifier can be split up in parts for vertical (Y) and horizontal (X) deflection and parts for intensity (Z) and focusing control. Input signals originate from the analog as well as the digital vertical (Y) channels and time bases (X). The signals that determine X, Y and Z of the text originate from the text generator on the digitizer unit. The signal that switches between analog and digital (XYSW signal) display originates also from the digitizer. The outputs of the final amplifiers drive the Cathode Ray Tube (CRT). The various sections are explained now in sequence.

Vertical deflection.

The FINAL Y INPUT STAGE receives input signal for signal display (YS) from the DELAY LINE. A second input signal (YD) determines the vertical component of the digital trace and text information. The input signal that comes from AN/DIG SELECTION controls switching between analog and digital display. The HF SQ WAVE COMPENSATION is controlled by the microcomputer provides that signal distortion from the DELAY LINE is compensated in the FINAL Y INPUT STAGE. The FINAL Y AMPLIFIER drives the vertical deflection plates of the CRT. The voltage applied to these plates is measured by the block CALIBRATE Y CIRCUIT. Its output signal YCAL is applied to the microprocessor; this is part of the automatic vertical calibration facility.

Horizontal deflection.

The FINAL X AMPLIFIER DRIVER receives input signal for signal display (XS) from the Main and Delayed Time Base sections. A second input signal (XD) determines the horizontal (X) component of the digital trace and text information. The input signal that comes from AN/DIG SELECTION controls switching between analog and digital display. The FINAL X AMPLIFIER drives the horizonal deflection plates of the CRT. The voltage applied to these plates is measured by the block CALIBRATE X CIRCUIT. Its output signal XCAL is applied to the microprocessor; this is part of the automatic horizontal calibration facility.

DESCRIPTIONS 3 - 11

Intensity and focusing.

The FINAL Z INPUT STAGE receives input signal for trace intensity (ZS) from the Z CONTROL block in the time base section. A second input signal (ZD) determines the intensity (Z) component of the text information. An input signal ZSW that comes from the digitizer allows switching between analog and digital intensity. The FINAL Z AMPLIFIER drives the intensity control electrode G1 of the CRT. This electrode is at a very negative -2.2kV voltage level. It is for that reason that a high-voltage blocking capacitor is necessary between G1 and the output of the FINAL Z AMPLIFIER. However only the ac component in the signal can pass through the capacitor. The dc and lf components are applied to the MODULATOR and modulated on a high-frequency carrier. Now they can pass through a capacitor, are demodulated in the DEMODULATOR and then the dc, lf and hf components are recombined.

The FINAL Z INPUT STAGE drives, in parallel with the FINAL Z AMPLIFIER, the FINAL FOCUS AMPLIFIER. This has the result that a well-focused spot over a large intensity range is obtained. The FINAL FOCUS AMPLIFIER drives the intensity control electrode G3 of the CRT. This electrode is at a very negative -2.2kV voltage level. It is for that reason that a high-voltage blocking capacitor is necessary between G3 and the output of the FINAL FOCUS AMPLIFIER. The ac component in the focusing signal passes through a high-voltage capacitor. The lf and dc components are derived from the DEMODULATOR that is also used in the intensity part. Focus control is possible via the FOCUS LEVEL SHIFTER.

3.2.5 Front unit and microprocessor

The front unit and microprocessor are the sections where all oscilloscope functions are controlled. Also the generation of text and the automatic calibration is controlled by the microprocessor. The operations performed by the microprocessor are determined by the ROTARY MATRIX and KEY MATRIX. Also commands from an external computer connected to the RS232 connector have the same result.

The ROTARY MATRIX and keys in the KEY MATRIX present at front unit A4 are read by the FRONT PROCESSOR. Also the ROTARY MATRIX that is present on the CRT controls unit A5 is read by the FRONT PROCESSOR. The CENTRAL PROCESSOR on the MICROPROCESSOR UNIT A6 is informed by the FRONT PROCESSOR of the settings selected with the front panel controls. Incorporated in the CENTRAL PROCESSOR is a complete RS232 interface. Serial communication is possible via the RS232 BUFFER.

The CENTRAL PROCESSOR has many inputs and outputs and forms the heart of the oscilloscope’s control section. First of all there are a READ ONLY MEMORY (CPROM) and a RANDOM ACCESS MEMORY (CPRAM). The POTENTIOMETER DAC CIRCUIT is able to produce 16 independently adjustable dc voltages. These voltages are used for continuous controllable functions such as POSition, FOCUS and VARiable.

The CENTRAL PROCESSOR also has a number of analog inputs that are internally converted into digital. These inputs are used for automatic calibration (YCAL, XCAL, MTBCAL and DTBCAL), AUTOCURsor position, power fail and probe indication (via PROBE DETECTION block). An important output is the "µP" output. It is via this output that the CONTROL CIRCUIT blocks found throughout the block diagram are controlled.

The CENTRAL PROCESSOR communicates to the TEXT/CURSOR CONTROL which text and cursors have to be displayed. This information is stored in the TEXT/CURSOR MEMORY.

3.2.6 Power supply

The power supply is a switched mode type and has high efficiency. It can function on a wide range of LINE input voltages. An important part of the power supply is directly connected to the mains. This part carries LIVE VOLTAGE and measurements and repairs must be carried out via a separation transformer by a qualified technician.

3 - 12 DESCRIPTIONS

The LINE IN voltage is applied to the LINE FILTER. This block prevents line interference from entering the supply unit. Also interference generated by the power supply does not enter the mains. An output signal of the filter is applied to the LINE TRIGGER PICK OFF in order to facilitate line triggering of the time bases.

The other output signal is applied to RECTIFIER + SMOOTHING: the output of this block has a dc voltage of which the height depends on the applied line voltage. This dc voltage is applied to the FLYBACK CONVERTER. This block incorporates a high voltage switching element that converts the dc voltage into a high-frequency ac voltage. This ac voltage is applied to the primary winding of a transformer. The secondary winding has many taps with connected RECTIFIERS: this gives the required supply voltages for the oscilloscope. The +5V POSTREGULATOR gives additional stabilization of the +5V supply voltage.

Stabilization of the output voltages at different line voltages is achieved by varying the on/off ratio of the switching element in the FLYBACK CONVERTER. The on/off ratio is determined in the CONTROL CIRCUIT by comparing the accurate output voltage of the +10V REFERENCE SOURCE and an output voltage of the RECTIFIERS.

The EHT CONVERTER generates the 6.3V heater voltage and -2.2kV cathode voltage for the Cathode Ray Tube (CRT). The +14kV final accelerator voltage for the CRT is generated in the HIGH VOLTAGE MULTIPLIER.

The AUXILIARY CONTROL is controlled by the microprocessor (µP) and generates three dc voltages that are used for TRACE ROTATION adjustment, GRATICULE ILLUMINATION adjustment and speed control for the FAN.

The PROTECTION CIRCUIT switches the power supply off in case of over and under output voltage, too low line voltage and too high temperature.

3.2.7 Digitizer

Blockdiagram description of the digitizer unit A8, which contains all digital storage circuits of the oscilloscope.

Main sections of the digitizer are:

- Input Stage

- Analog to Digital Converter and Clock Generator

- Control-signal Generator

- Trigger Comparator, Source Selector and Delta-t circuit

- Data Acquisition and Trigger Logic and Fast Acquisition Memory

- Main Acquisition Memory

- Digital Signal Processor and Program Memory

- Bus Arbiter and Trace Generator

- Text Generator and Text Memory

- X- and Y- Output DAC, Dotjoin circuit and Intensity Control

The digitizer unit contains a large number of integrated circuits that consists of a large amount of functions. It is not possible to measure around inside these circuits and therefore a detailed description of the functions in these integrated circuits is not

given.

The functioning of the digitizer is explained using a separate blockdiagram.

In the blockdiagram description as much links as possible are made to the different components in the circuit diagrams and their item numbers.

DESCRIPTIONS 3 - 13

3.2.7.1 Input stage

Four input channel signals for channels 1, 2, 3, and 4 from the analog oscilloscope section are applied to the digitizer unit via eight coaxial cables. Each of these symmetrical input channel signals is splitted in two equal signals by a signal buffer and SPLITTER. One signal is going to an INPUT STAGE into the vertical signal data path, the other signal is supplied to pattern and state comparators in the LOGIC TRIGGERING block in the trigger signal path.

The MASPU’s (Main Analog Signal Processing Unit) A and B take care of the channel switching. The input channel signals 1 and 3 are limited and amplified to be multiplexed by the chopper circuit in MASPU-A. The same for input channel signals 2 and 4 in MASPU-B. The multiplexed signal is amplified and split in two equal parts again. Part one is fed to a combiner in MASPU-A. Part two is fed to the combiner in the other MASPU-B. Each channel combiner has two modes, selected by control signals. In the first mode it supplies its own signal to a variable gain circuit and in the second mode it supplies the signal from the other MASPU to the variable gain circuit. Via the VAR control circuit the vertical gain information for each path is applied to the circuit. The output signal from each variable gain circuit is converted into an asymmetric signal, that is fed to a Track and Hold circuit T&H. This circuit is needed to offer a stable input signal to the analog to digital converter behind it. The T&H control signal is a 100MHz clock.

3.2.7.2 Analog to Digital Converter and Clock Generator

The T&H circuit offers a stable input signal to an analog to digital converter (ADC). Both the ADC-A and the ADC-B are under all circumstances continuously clocked by a 100 MHz clocksignal which is generated by a CLOCK GENERATOR. The ECL output data signals of the ADC’s are buffered and converted into TTL data signals by ECL/TTL translators.

3.2.7.3 Control-signal Generator

A number of control, mode and selection signals come from CONTROL SIGNAL GENERATORs via an SBUS (serial bus interface) and a serial to parallel converter. These control signals have functions in almost all circuits.

3.2.7.4 Trigger Comparator, Source Selector and Delta-t circuit

Acquisition of new signal information is stopped on receipt of an active trigger and this is completely controlled by the fully programmable trigger circuits. The time relation between the freezeing of the acquisition and the signal STOPACQ depends on the choosen trigger delay.

The trigger signal path provides for three additional trigger modes to the modes which are already present in the analog front end. It are Pattern triggering, Timed-Pattern triggering and State triggering.

The four input channel signals from the buffers and SPLITTERs are applied to four level comparators in the LOGIC TRIGGERING block. They are compared to a user-defined pattern in a Pattern and Edge selector. When the user-defined pattern conditions are met, an internal PATTERN signal becomes active and is applied to the TRIGGER SELECTION and SYNCHRONIZATION circuit, to Timer circuits and to Timed Pattern and State circuits.

The trigger source selector will select the trigger signal, corresponding with the user-defined trigger mode.

Signals as Main Time Base trigger DSOM, Delayed Time Base trigger DSOD and DTBGATE are derived from the trigger circuits in the analog oscilloscope section.

Trigger selection, mode selection, pattern and control signals are generated via the serial bus interface and a serial to parallel converter. Events clock selection is controlled in the same way.

3 - 14 DESCRIPTIONS

With events selected, the trigger detection unit catches the first edge. With this edge it enables an event counter in the DATA ACQUISITION AND TRIGGER LOGIC. When it has finished counting the required number of events, a second stage in the trigger detection unit is enabled to catch the last event clock.

In TV trigger mode the events clock is switched to DSOM. By enabling the event counter with VSYNC (derived from the composite sync signal on DSOM) it is posible to count down with the events counter to any line in a TV signal. In digital mode the events counter is loaded with a count value one less than necessary. Now the trigger sync unit can generate a trigger on the correct TV line. In analog mode the events counter output is fed back to the analog front end as TVHOLD-LD.

In normal trigger mode the event counter is enabled by a signal from the data path. Now we can count trigger pulses for trigger delay activities during the acquisition.

A signal RUNDT is derived from the trigger circuit to start a delta-t measurement by a DELTA-T circuit. This circuit is used to measure the time elapsed between the moment of triggering and the real sample moment. It is a measure to determine the correct location in memory to store the digital code of the first sample of each acquisition cycle. A DELTA-T counter in the DATA AND ACQUISITION TRIGGER LOGIC is running at the maximum sample clock frequency, enabled by the STOPACQ (stop acquisition) signal. Counting is stopped by the falling edge of the delta-t ready signal DTRDYN from the DELTA-T circuit.

A digital signal processor (DSP)is informed about this completion of the delta-t measurement by an interrupt signal. It then reads the value of the measurement in the DELTA-T counter and it resets the counter to zero again in order to be ready for the next DELTA-T measurement. The measurement is very important for the positioning of the sample in memory as well as on the CRT screen.

3.2.7.5 Data Acquisition and Trigger Logic and Fast Acquisition Memory

The output data from the ECL/TTL translators is applied to the DATA ACQUISITION AND TRIGGER LOGIC circuit (DARLIC), which contains a data path and a trigger engine. The data path is responsible for the total acquisition process from ADC to memory, including time-base generation and the trigger engine is responsible for the generation of a start/stop acquisition signal that is fed to the data path.

The data is latched by a register and checked on over/underflow by a detector. Peak detectors determine minimum and maximum values of the signal. When peak is off, this circuit will pass on all the samples. A data junction lowers the data rate from 100 MHz streams to eight 25MHz data streams and guides the data from the peak circuit properly to output latches.

Data will directly be stored in a FAST ACQUISITION MEMORY (FAM) which consists of 8x a 2kx8 bit SRAM.

The FAM is addressed by two 18 bit wide address pointers, the acquisition pointer and the display pointer.

The acquisition pointer is active during the writing of new signal data information into the FAM. The write cycle starts, if enough bytes have been received. The pointer is loaded by the digital signal processor with the address of the first sample of a display cycle.

FAM data is read, 64 bits at a time, when no write actions are performed and enough time-space is available between two write actions of the acquisition path. The FAM is then addressed by the display pointer, which is automatically presetted with the address where the display should start. A kind of handshake control is responsible for correct operation.

The acquisition control logic separates the time around the trigger point in, gathering of pre- and post trigger information, and the counting down of a specific extra trigger delay.

DESCRIPTIONS 3 - 15

The SBUS (serial bus interface) is part of the DARLIC circuit. It is supporting a very limited number of capabilities. Its register is controlling two open collector I/O pins, SDA (serial data) and SCL (serial clock), and a select line SSEL. The buffer enables the DSP to read the status on the SDA and SCL lines.

The SBUS is connected to a CONTROL SIGNAL GENERATOR, the DOT JOIN circuit and to the INTENSITY CONTROL circuit.

All interrupt sources within DARLIC’s data path, trigger path, and other features are gathered in the interrupt register.

The DSP can write an interrupt mask into the interrupt enable registers. There are two interrupt enable registers, so that different interrupt causes can generate interrupts with different destinations. Bits in these registers that are set, enable the corresponding bit in the interrupt register to generate an interrupt. Every bit in the interrupt register can be cleared separately by the interface clear control. They can also automatically be cleared upon a read of the interrupt register via the interrupt status buffer.

3.2.7.6 Main Acquisition Memory

The converted analog signals are stored directly from the ADC’s into a FAST ACQUISITION MEMORY. Acquired data has later to be transferred to a MAIN ACQUISITION MEMORY (MAM) by means of a DIGITAL SIGNAL PROCESSOR (DSP). The MAM consists of 2x a 32kx8 bit SRAM, is non volatile

and contains all trace registers. It contains an acquisition memory part as well as a

display memory part and contains the data which is ready for display on the CRT screen.

3.2.7.7 Digital Signal Processor and Program Memory

The DIGITAL SIGNAL PROCESSOR (DSP) has the control over the entire DIGITIZER and performs all necessary signal processing activities, which are not available in hardware. Signal processing functions are functions like:

- Pre-processing: Average, envelope

- Postprocessing: Mathematical functions, interpolation, filters

- Other functions: Display memory refresh, X-position control, delta-t processing and so on

One of its main tasks is the composition of the trace information out of the available registers. The SYSTEM ENGINE is responsible for the text data. The Text and Trace Generator takes care of generating the appropriate X, Y and Z information for the vector oriented CRT.

Although the DSP has full control over the DIGITIZER the SYSTEM ENGINE is able to access all circuits in the same way.

At any point in time, the DIGITAL SIGNAL PROCESSOR can force an exit to the idle state. Under certain conditions the DSP can force a change from state three to state four. The DSP can also write an interrupt mask into the interrupt enable registers.

The DSP uses its own PROGRAM MEMORY which consists of 2x an 8kx8 bit SRAM. It is a volatile memory and can not be accessed by any other device.

3 - 16 DESCRIPTIONS

3.2.7.8 Bus Arbiter and Trace Generator

The major function of the BUS ARBITER AND TRACE GENERATOR (BATGE) is the arbitration between multiple processors, multiple memories and memory mapped I/O with a minimum of interference. Wait cycles for memory devices are programmable and active devices like the DARLIC circuit for example, generate a "not ready signal".

The BATGE circuit is also responsible for interconnecting all address, data and control busses of the DSP, SYSTEM BUS, TEXT AND TRACE GENERATOR, DARLIC and MAM.

The eight traces are generated by the TRACE GENERATOR in the BATGE circuit.

3.2.7.9 Text Generator and Text Memory

The SYSTEM ENGINE is responsible for the text data and the Text and Trace Generator takes care of generating the appropriate X, Y and Z information in vector notation for the vector oriented CRT.

Text and cursor information to be displayed on the CRT screen, is stored in a TEXT MEMORY which consists of one 8kx8 bit SRAM circuit.

3.2.7.10 X- and Y- Output DAC, Dotjoin circuit and Intensity Control

Digital signal and text data from the MAM display part, to be displayed on the CRT screen, is via the BATGE circuit applied to the digital to analog converters DAC X and DAC Y where it is converted into analog signals. They pass a DOTS/DOTJOIN circuit and are fed to the final X- and Y- amplifier stages in the analog oscilloscope section. A switch signal for switching between analog oscilloscope operation and digital oscilloscope operation is generated by the SWITCH CONTROL circuit and fed to the X- and Y- stage. The DOTJOIN circuit is controlled via the BATGE circuit and the SBUS.

All conditions under which the INTENSITY CONTROL has to blank and unblank the CRT beam, are combined in this circuit. Information comes partly via the SBUS and partly via the BATGE circuit. The final intensity signal is fed to the final Z- amplifier stage in the analog oscilloscope section. A switch signal for switching between the analog and the digital intensity signal is generated by the SWITCH CONTROL and fed to the Z-stage.

PARTS 4 - 1

4PARTS

4.1 UNITS

A1a 5322 214 91839 A1 Signal unit PM3370B A1b 5322 214 91501 A1 Signal unit PM3380B A1d 5322 214 90898 A1 Signal unit PM3384B A1e 5322 214 91838 A1 Signal unit PM3390B A1g 5322 214 90724 A1 Signal unit PM3394B A2a 5322 216 04243 A2 XYZ amplifier unit 100 MHz A2b 5322 216 04244 A2 XYZ amplifier unit 200 MHz A3a 5322 216 51282 A3 Microprocessor unit digital A3b 5322 216 51283 A3 Micro proc. unit digital + IEEE A4 5322 214 90726 A4 Front PCB A5 5322 214 90727 A5 CRT controls unit A6 5322 216 04247 A6 Power supply unit digital. A8a 5322 214 90894 A8 Digitizer 200 MHz Standard A8b 5322 214 91029 A8 Digitizer 200 MHz Ext. Mem. A8c 5322 214 91026 A8 Digitizer 60/100 MHz Standard A8d 5322 214 91028 A8 Digitizer 60/100 MHz Ext. Mem. A10 5322 214 90895 A10 Connector board

-- 5322 218 61479 Extension unit for A3, A6 and A8

Item Ordering code Description

Figure 4.1 Unit Locations

4 - 2 PARTS

4.2 INTERCONNECTION CABLES

1a 5322 321 21616 Line cord European type 1b 5322 321 10446 Line cord USA type 1c 5322 321 21617 Line cord British type 1d 5322 321 21618 Line cord Swiss type 1e 5322 321 30387 Line cord Australian type 1f 5322 321 30386 Line cord South Africa 2a 5322 320 40281 Delay line PM3370B/8xB 2b 5322 214 90732 Delay line PM339xB 3 5322 321 61284 Flat cable 50-pole 18 cm 4 5322 321 61291 Red wire to CRT, 105 mm (4/instr., can be

adapted to otherlengths) 5 5322 321 61287 White flat cable 12-pole 6 5322 321 61286 White flat cable 16-pole 7 5322 321 61283 Flat cable 50-pole 10 cm 8 5322 321 61288 White flat cable 28-pole 9 5322 321 61289 White flat cable 12-pole 10 5322 320 50309 50Ω coax 8 x 60 cm 11 5322 320 50311 50Ω coax 2 x 60 cm + 3 x 47 cm 12 5322 320 50312 IEEE cable with connector 13a 5322 267 50452 Housing 5 pole (2 per cable) 13b 5322 268 24128 Contact pin (3 per cable) 14a 5322 268 40232 Housing 2 pole (1 per cable) 14b 5322 268 20176 Contact pin (2 per cable) 15a 5322 268 40233 Housing 3 pole (2 per cable) 15b 5322 268 20176 Contact pin (6 per cable)

Figure 4.2 Units lay-out and Interconnections

Item Ordering code Description

PARTS 4 - 3

Figure 4.3 Cable locations, top side

Figure 4.4 Cable locations, bottom side

4 - 4 PARTS

4.3 MECHANICAL PARTS

Figure 4.5 Mechanical parts, front and side panel

PARTS 4 - 5

01 5322 447 91922 01 Cabinet 02 5322 414 20404 11 Light grey control knob 03 5322 535 93245 01 TRACE ROT shaft 04a 5322 454 13193 01 Textstrip bezel PM3394B 04c 5322 454 13192 01 Textstrip bezel PM3390B 04d 5322 454 13191 01 Textstrip bezel PM3384B 04f 5322 454 13189 01 Textstrip bezel PM3380B 04g 5322 454 13188 01 Textstrip bezel PM3370B

06 5322 414 20406 02 Dark grey control knob 07 5322 455 81144 01 CAL-SEAL sticker 08 5322 414 20405 02 Dark mushroom control knob 09a 5322 455 81191 01 Textplate (adhesive) PM33x4B 09c 5322 455 81206 01 Textplate (adhesive) PM33x0B

11a 5322 414 20482 01 Pushbutton mat PM33x4B 11c 5322 414 20497 01 Pushbutton mat PM33x0B

12a 5322 456 10025 01 Textstrip BNC’s PM3394B 12b 5322 455 81211 01 Textstrip BNC’s PM3390B 12c 5322 455 81178 01 Textstrip BNC’s PM3384B 12d 5322 455 81207 01 Textstrip BNC’s PM3380B/70B

13 5322 447 70121 01 Front cover 14 5322 455 81181 01 Textstrip handle Fluke

16 5322 498 50326 01 Handle complete 17 5322 455 81141 01 Textstrip CRT controls 18 5322 462 41848 02 Handle cover 19 5322 498 50268 02 Locking clip 20 5322 462 41695 04 Plug for pouch holes

Item Ordering code Qty Description

4 - 6 PARTS

21 5322 219 82813 01 Mains input connector 22 4822 070 33152 01 Fuse 5x20 3,15 AT 23 see interconnections Line cord 24 5322 492 70941 02 Contact spring single 25 see chapter 2.10.2 02 Batteries

26 5322 456 90426 01 Battery compartment cover 27 5322 492 70975 01 Contact spring dual 28 5322 462 41697 04 Bottom foot 29 5322 462 41846 04 Rear foot

30 5322 256 91793 02 Rear socle

Figure 4.6 Mechanical parts, rear panel

Item Ordering code Qty Description

PARTS 4 - 7

31 5322 464 90708 01 Chassis complete 32 5322 447 91923 01 Front frame 33 5322 381 11276 01 Bezel 34 5322 480 30181 01 Blue contrast filter

35 5322 414 20568 01 Power on/off knob 37 5322 361 10614 01 Fan 38 5322 255 41227 01 Heatsink

40a 5322 131 11065 01 CRT D14-373GH/123 (V 0001) - PM3370B/8xB 40b 5322 131 11179 01 CRT D14-383GH/123 (V 0001) - PM339xB 41 5322 466 30493 01 CRT shielding 42 5322 466 30164 01 CRT manchet, rubber 43 5322 462 10263 01 CRT support, plastic

Figure 4.7 Mechanical parts inside instrument

Item Ordering code Qty Description

4 - 8 PARTS

Note: for items not listed refer to chapter 4.1.2 and 4.2.

45 5322 460 60404 01 CRT frontrubber 46 5322 462 40957 01 Light conductor 47 5322 134 41076 01 Lamp 28V 80mA (E 1001)

60 5322 492 71668 01 Earth contact @ top of front 61 5322 492 71669 01 Earth contact @ bottom of front 62 5322 492 70965 04 Earth contact @ side of front

Figure 4.8 Mechanical parts behind front panel

Item Ordering code Qty Description

PARTS 4 - 9

50 5322 267 10004 01 BNC connector Z-mod 51 5322 290 34022 01 Solder tag for Z-mod 53 5322 401 10954 01 Clamp for delay line (plastic) 54 5322 290 61045 01 Earth contact CRT shielding

Figure 4.9 Mechanical parts, bottom view

Item Ordering code Qty Description

4 - 10 PARTS

81 5322 466 30405 01 Top shielding 82 5322 466 30404 01 Bottom shielding 83 5322 256 91792 01 BNC holder 84 5322 267 10191 04 BNC coax connector

86 5322 462 41847 01 BNC insulator, plastic 87 5322 532 21188 04 BNC spacer 88 5322 535 93244 01 Probe calibration pin 89 5322 492 70939 04 Indication spring 90 5322 401 11419 04 Soldering bracket for BNC

Figure 4.10 Mechanical parts, screening of input circuit

Item Ordering code Qty Description

UNIT DESCRIPTIONS 5.1 - 1

5 UNIT DESCRIPTIONS

5.1 SIGNAL UNIT A1

5.1.1 Description A1

5.1.1.1 Introduction

With the exception of the final stages, unit A1 incorporates the vertical channels, the triggering, the time bases and the intensity (Z) control. The unit A1 description is split into the following chapters:

- Input attenuators and calibrator.

- Preamplifiers.

- Y-functions and delay line driver.

- Triggering.

- Main and delayed time base.

The complete signal unit is divided over 18 circuit diagrams. These diagrams and their main interconnections are listed in the table. Diagram 11 includes the circuitry that controls the functions in the vertical channels. Diagram 18 shows the connectors that make contact with other units in the oscilloscope via the connector board. These units are:

- The final amplifier unit A2: horizontal deflection signal and intensity control.

- The microprocessor unit A3: control signals and potentiometer functions.

- The power supply unit A6: supply voltages and line trigger signal.

Diagram Description Input signal

coming from

Output signal going to

Control signal coming from

1,2,3,4 5 6 7 8 9 10 11 12 13 14 15 16 17

Attenuator ch.1,2,3,4 Attenuator control Preamplifier ch.1,2 Preamplifier ch.3,4 Y-functions Delay line driver Display + trigg control Control circuits MTB trigger TV/line trigger DTB trigger Time base logic Main time base Delayed time base

input 1,2,3,4 diagr.1,2,3,4 diagram 1,2 diagram 3,4 diagram 6,7 diagram 8 diagram 18 diagram 18 diagram 8 diagram 12,18 diagram 8 diagram 12,14 diagram 15 diagram 15

diagr.6,7 diagr.1,2,3,4,18 diagr.8 diagr.8 diagr.9 delay line diagr.8,9 diagr. 1,2,3,4,5,6,7,8 diagr.13,15 diagr.12,14 diagr.15,17 diagr.16,17,18 diagr.17 diagr.18

diagr.5,11 diagr.11 diagr.11,18 diagr.11,18 diagr.10,11,18 diagr.10,18 diagr.18 diagr.18 diagr.12,18 diagr.12,14 diagr.14,18 diagr.15,18 diagr.18 diagr.18

5.1 - 2 UNIT DESCRIPTIONS

5.1.1.2 Input attenuators and calibrator

Diagram 1, 2, 3, 4

The attenuators of channels 1, 2, 3 and 4 are identical, therefore only channel 1 is explained. Every attenuator basically consists of four sections. These sections are:

- The input circuit with 50Ω termination resistor and AC/DC input coupling circuit.

- The high impedance attenuator with divide by 1, divide by 10 and divide by 100 sections.

- The impedance converter. This is the active stage.

- The low impedance attenuator that can give an additional divide by 2.5.

The attenuator sections are switched by voltage pulse operated relays. This reduces power dissipation. Every relay has two change-over contacts. After a pulse the contacts stay in the selected position. One side of each relay coil is connected to the common potential AT12REP; the other side to a voltage that differs per relay. Setting a relay in the position as drawn in the diagram (rest position) is achieved by a positive 10 ms pulse on common line AT12REP while the other control line stays at 0 V level. The other side of the relay coils that must not switch are applied to the already mentioned 10 ms positive pulse. Switching a relay to the position opposite to the one in the diagram (activated position) is achieved by a 10 ms positive pulse at the other side of the relay while AT12REP is kept at 0 V. This principle is demonstrated in figure 5.1 where the /1 relay is switched to the rest position and the /10 relay is activated.

Input circuit

The 50Ω termination resistor is formed by the resistors R1006/R1007. It is switched by relay contact K1001. The NTC resistor R1011 is placed between R1006 and R1007 and measures the temperature of these resistors. This information is routed to the microprocessor on unit A3. If necessary the 50Ω position is switched off. The DC blocking capacitor is C1001. In DC position the capacitor is not used and discharged via R1002. The signal path is via K1002.

High impedance attenuator

The divide by one section (/1) is switched via the relay contacts K1003. It switches the input signal through without further attenuation. The divide by ten section (/10) is present between the relay contacts K1004. The /10 is accomplished by R1016, R1027, R1031 and R1032. The divide by hundred section (/100) is present between the relay contacts K1006 and K1004/6,4. The /100 is accomplished by R1021 and R1023. LF square wave calibration is achieved via the dual varicap diode V1002. Influence of the signal on the capacitance value is eliminated by two diodes with opposite polarization. The compensation factor and consequently the voltages AT1LFCOR1 and AT1LFCOR0 are depending on the selected attenuator position.

Figure 5.1 Switching pulses for relay

AT12REP

AT1/001

AT1/010

RELAY /001

TO REST POSITION

RELAY /010

TO ACTIVE POSITION

ST6268

UNIT DESCRIPTIONS 5.1 - 3

The signal ATCAL is applied to /33 attenuator R1008/R1009. ATCAL can supply several accurate voltages that are used for vertical calibrations.

Impedance converter

This active stage consists of three sections with different frequency ranges. The sections partly make use of the same components:

- The HF section for frequencies above 5 kHz. It is formed by C1021, FET V1006 and the two

emitter followers V1008 and V1009. The FETs V1004 and V1005 are used for input protection. V1007 is a current source.

- The LF section for frequencies 30 Hz to 5 kHz. It is formed by operational amplifier N1001 (gain

2x) that receives the LF input signal via divide-by-two attenuator R1031/R1032. The capacitors C1023 and C1025 are frequency determining components in the N1001 feedback loop. The N1001 output signal is routed via R1034, V1006 and the emitter followers V1008 and V1009.

- The DC section for frequencies DC to 30 Hz. It is formed by operational amplifier N1001 (gain 2x)

that receives the input signal via divide-by-two attenuator R1031/R1032. Via feedback resistor R1037 the voltage at the output of the impedance converter is compared with the input level via the + and inputs of N1001. This keeps the DC output value of the impedance converter exactly at the required value. This compensates for DC drift. Part of the feedback loop is V1001 that determines the low-frequency gain. The N1001 output signal is routed via R1034, V1006 and the emitter followers V1008 and V1009.

The low impedance attenuator is formed by R1072 and R1073. Switching is accomplished by V1012 and V1013. V1012 conducts in the /1 position and V1013 in the /2,5 position. The attenuator output signal is an unbalanced signal. The unbalanced output signal is applied to the succeeding stage via R1071 and via R1074.

Diagram 5

Probe indication circuit

There are four identical circuits of which the one for channel 1 is described. The resistor in the indication ring of the probe is present between X1002 and ground potential. The resistance value is measured by the microprocessor on unit A3. The temperature of the 50Ω termination resistors on diagram 1 is measured by NTC resistor R1011. This resistor is placed in between the two termination resistors. If the temperature gets too high, the + input of N1101 becomes lower than the input. This makes output 13 of N1101 low and 0 volt is detected by the microprocessor via the probe indication line PROBE1. This is the sign for the microprocessor that the 50Ω resistor is too hot and it is switched off.

LF square wave calibration

This circuit produces the voltages for the varicap diodes V1002. The diodes require control voltages with opposite polarity. There are four identical circuits for the four vertical channels. The input signal AT1LFCAL is produced by a DAC and has the range 0 ... 10 volt. This is converted via the operational amplifiers N1102, N1103 into two signals that range from -5 ... -15 volt (AT1LFCOR0) and +5 ... +15 volt (AT1LFCOR1) respectively.

Amplitude Calibrator

This circuit consists of 8-position multiplexer D1152 and operational amplifier N1104. It can supply 8 accurate voltages of 10V, 5V, 2V, 1V, 500mV, 200mV and 0V. They are supplied to the vertical channels 1, 2, 3 and 4 for calibration voltages. The voltages are derived from a voltage divider with precision resistors R1192 through R1197. The divider is supplied with an accurate 10 V reference voltage. Under control of a three bit address ATCAL0 ... ATCAL2 one of the outputs of the voltage divider is selected via D1152. This signal is routed to the vertical channels via buffer N1104.

Loop gain calibration

The output voltage range of a digital-to-analog converter (DAC) is changed via resistor network R1112, R1113 and R1114. The output voltage is applied to V1001 that determines the low-frequency gain in the channel 1 attenuator.

5.1 - 4 UNIT DESCRIPTIONS

Calibrator

This circuit is used for probe adjustment. It is built up around triple analog multiplexer D1151. The sections D1151/1,2,10,15 and D1151/3,4,5,9 form a 2 kHz oscillator. The third section D1151/11,12,13,14 switches in the 2 kHz rate of the oscillator. The oscillation principle is now explained with the simplified diagram in the figure.

The start is in the situation as given in the figure. C1151 charges from +12V via R1151 and the switch contacts 15 and 2. After some time the voltage across C1151 reaches the digital "High" level and the switch contacts go to the opposite position. This causes C1151 to discharge to 0V via switch contacts 3 and 4 and R1152. Via switch contacts 15 and 1 and R1153 a gap is created between the switching moments. The charging/discharging process makes pin 11 high and low at a 2 kHz rate. This connects voltage divider R1156/R1157 and R1158, R1159 with + 10VREF or leaves it floating in the 2 kHz rate.

5.1.1.3 Preamplifiers

Diagram 6, 7

The preamplifiers for channel 1 and 2 and associated current sources are given in diagram 6. Diagram 7 gives this for channel 3 and 4. Channel 1, 2, 3 and 4 are identical, therefore only channel 1 is explained.

The output signals AT1OUT1 and AT1OUT0 from the channel 1 attenuator are applied to pin 3 and 5 of amplifier IC D1201. The balanced output signal of this IC is available at pin 18 and 19. This signal is routed to the Y-functions section via the level shifters V1201 and V1202.

+12V

51k1

R1151

D1151

+10V REF

13 12

9k9

R1153

215k

10n

C1151

100p

D1152

42k2

R1152

637

100p

600 mVpp

2kHz

ST6267

−

R1154

C1152

10k

Figure 5.2 Simplified diagram of CAL generator

UNIT DESCRIPTIONS 5.1 - 5

The amplifier D1201 can be switched to a number of attenuation/gain positions that are dependent on the channel 1 AMPL position. The gain x1 position is determined by R1205/R1206/C1205 that are present across pin 6 and 7. The x1 is switched by control signal PA1X1. The attenuation /2 is determined by R1207 and switched by PA1/2. The gain x5 is determined by R1208/R1210/R1215/C1210 and switched by PA1X5. Continuous gain control is determined by DAC output signal VAR1 that is applied to pin 20. This signal comes from microprocessor unit A3. It is used for front panel gain control in fine steps and also for gain calibration.

The complete range of the channel 1 input sensitivities is controlled via front panel control AMPL. It is accomplished by the combination of input attenuator positions and the x1, /2, x5 and the VAR1 functions.

Offset control is achieved via the DAC output signal PA1OFFSET that is applied to the D1201 input pin 13. The DAC signal PA1OFFSTRG gives an offset signal in the current sources V1208 (PA1LSA) and V1209 (PA1LSB). PA1LSA and PA1LSB are applied to level shifters V1201/V1202. This is used to compensate for offset in the trigger path and also influences the offset in the vertical channel. This in turn is compensated via the POS1 signal in the Y-functions section.

The circuit in the bottom half of the diagram includes a number of current sources for the channel 1 and 2 preamplifiers. The reference for all these current sources is PAVREF that is present at N1251/pin 3. This is converted in a reference voltage at the collector of V1252 that is applied to the current sources. The currents for channel 1 are PA1ICL, PA1ISY, PA1LSA and PA1LSB. The currents for channel 2 are PA2ICL, PA2ISY, PA2LSA and PA2LSB. PA2LSA and PA2LSB are adjustable via DAC output signal PA2OFFSTRG.

5.1.1.4 Y functions and delay line driver

Diagram 8

This diagram shows the channel 1, 2, 3 and 4 function circuits D1301, D2301, D3301 and D4301. The balanced output signals of each cicuit are available at pin 7 and 8. They are all applied to the resistance network R1313 through R4314 that is shown on the next diagram. The output of this network feeds the delay line driver.

The four function circuits are almost identical. Compared with channel 1 and 3, channels 2 and 4 have additional invert functions. For this reason, only the channel 2 circuit is explained. Here the balanced input signal is applied to pin 25 and 26 of D2301. The balanced output signal at pin 7 and 8 is switched by control signal CNT2CH-HX. The balanced output signals FNC2MTR0 and FNC2MTR1 that are available at pin 13 and 14 are used for triggering the main time base. This is switched via control signal CNT2MT-HT. The balanced output signals FNC2DTR0 and FNC2DTR1 that are available at pin 1 and 2 are used for triggering the delayed time base. This is switched via control signal CNT2DT-HT.

Channel 2 position control is achieved via an adjustable analog DAC voltage POS2 from the microprocessor unit A3. This voltage is applied to input 9 of operational amplifier N2202. This IC converts the DAC voltage POS2 (1 ... 4 V) into a voltage between -8 and +8 V. This voltage is converted into a current via resistor R2311, because pin 12 of D2301 is a virtual ground.

The balanced output signals FNCYOP0 and FNCYOP1 at pin 5 and 6 of D2301 of the channel 1 can be used to provide signals for the Y-out option. The (optional) Y-out circuit (present in channel 1 only) is located on an additional unit that is connected via the connectors X1303 through X1310. This is switched via control signal YOP-HX at pin 4. If no option installed, the signal is switched off by a low level supplied via R1312. If the option is present the switching is achieved by a signal coming from the additional unit.

5.1 - 6 UNIT DESCRIPTIONS

The balanced output signals FNC1DPO0 and FNC1DPO1 at pin 9 and 10 can be used to provide signals for digital signal storage. The signals are routed via the coaxial sockets X1301 and X1302 to the sockets X8001 and X8002 on digitizer unit A8. This is present on all 4 channels. Biasing current for these outputs is provided via V1302, V1313 and R1307. The capacitor C1301 determines the cutoff frequency if the bandwidth limiter is active. The limiter is switched via signal FNCBWL.

The following table summarizes the functions and related pin numbers of the IC’s used in the circuit diagram:

Diagram 9

This diagram shows the delay line driver and associated circuitry. The delay line driver itself consists of the balanced amplifier branches V5003/V5006/V5008 and V5004/V5007/V5009. These amplifiers serve as a 9x amplifier and level shifter. V5011/V5012/V5013/V5014 clamp the input signal in order to reduce the output voltage swing applied to the delay line. The balanced input current (100 uA/div) signals from channel 1, 2, 3 and 4 are FNC1OUT0/FNC2OUT0/FNC3OUT0/FNC4OUT0 and FNC1OUT1/FNC2OUT1/FNC3OUT1/FNC4OUT1. The output voltage (45 mV/div when connected to the delay line, 90 mV/div when open) signals DLDOUT0 and DLDOUT1 supply the delay line. The resistors R5051 and R5052 give correct 50Ω termination impedance.

The Y-offset control part is supplied with the DAC output signal DLDOFFSET (delay line driver offset) that is used for instrument calibration. The DAC output signal TRASEP gives trace separation between main and delayed time base display in alternate time base mode. TRASEP is passed through via analog switch D5001/6,8,9 if control signal TRASEP-HC is high.

Operational amplifier N5001/5,6,7 makes a stable +4 V reference voltage. Operational amplifier N5001/2,3,1 keeps DLDDCLEVEL0 and DLDDCLEVEL1 at equal level by influencing the level at DLDDCCORR.

Diagram 10

This diagram comprises the circuitry that controls the vertical channels 1, 2, 3 and 4 and the main (MTR) and delayed (DTR) trigger sources. The heart is formed by IC D9009. The IC is loaded with information about the control functions that must be executed. This happens via the input lines SCL (Serial CLock) and SDA (Serial DAta) that come from the microprocessor unit A3. At turn-on D9009 gets a reset at pin 17. This occurs via V5506 which is controlled by output D9004/11 on the next diagram.

The channels 1, 2, 3 and 4 are switched via the output pins 2, 3, 4 and 5 of D9009. The main time base trigger (MTR) source of channel 1, 2, 3 and 4 is switched via the control signals that are available at pin 2, 12, 1 and 13 of multiplexer D5501. This multiplexer is supplied with 3 lines that come from pin 25, 26 and 27 of D9009. The signal CNT2MTI-HT that is present at pin 11 of AND gate

Output (pin) On/Off (pin) Invert (pin) Bandw. Lim. (pin) Pos (pin)

MTB Trig (13,14)

DTB Trig (1,2)

Y-out (5,6)

Digital out (9,10)

Chann. out (7,8)

UNIT DESCRIPTIONS 5.1 - 7

D5503 gives the necessary inversion of the main trigger path if channel 2 is in the inverted mode. The signal CNT4MTI-HT that is present at pin 4 of AND gate D5503 gives inversion of the main trigger path if channel 4 is in the inverted mode.

The delayed time base trigger (DTR) source of channel 1, 2, 3 and 4 is switched via the control signals that are available at pin 2, 12, 1 and 13 of multiplexer D5502. This multiplexer is supplied with 3 lines that come from pin 22, 23 and 24 of D9009. The signal CNT2DTI-HT that is present at pin 10 of AND gate D5503 gives the necessary inversion of the delayed trigger path if channel 2 is in the inverted mode. The signal CNT4DTI-HT that is present at pin 3 of and-gate D5503 gives inversion of the main trigger path if channel 4 is in the inverted mode.

The input pin 9 ALTCLN of D9009 gives channel/trigger source switching in the alternate display mode. The circuit with V5503 converts the current input signal ALTCLK (ALTernate CLock) from the time base logic into a voltage signal. The input pin 17 PUDML gives D9009 a preset when switching the oscilloscope on.

For the chopped display mode a chopper oscillator V5501/V5502 is present. It is switched on when control signal CHSW (CHopper SWitch) is high. The output signal of the oscillator is applied to pin 7 of D9009. The signal CHBLANK gives display blanking when switching between one channel to another.

The D9009 output signal TRASEP-HC activates the trace separation control in alternate time base mode. This signal is high if the delayed time base is active and low for the main time base. The output signal TBSEL controls the choice between main time base (high) and delayed time base (low) for horizontal deflection.

Diagram 11

This diagram includes the generation of control signals for the channel 1, 2, 3 and 4 attenuators, preamplifiers, Y-function and delay line driver circuits. The names of the control signals indicate exactly which circuit part is controlled:

- The signals starting with AT1, AT2, AT3 and AT4 control the ATtenuators of respectively channels

1, 2, 3 and 4. The attenuators and associated signal name lists are indicated in the description belonging to figures 1, 2, 3 and 4.

- The signals starting with PA1, PA2, PA3 and PA4 control the PreAmplifiers of respectively

channels 1, 2, 3 and 4. The preamplifiers and associated signal name lists are indicated in the description belonging to figures 6 and 7.

- The signals starting with FNC1, FNC2, FNC3 and FNC4 control the Y- FuNCtion (channel and

trigger source switching) of respectively channels 1, 2, 3 and 4. The Y-function blocks and associated signal name lists are indicated in the description for diagram 8.

- The signals starting with DLD control the Delay Line Driver. This circuit part and associated signal

name list are indicated in the description for diagram 9.

A part of the control functions are simple on/off functions; e.g. the switching of a certain attenuator section. Other control functions consist of an adjustable DC voltage; e.g. the DC voltage that determines the gain of an amplifier section.

D9001 and D9002 have outputs that are able to drive the relays in the attenuator sections of channels 1, 2, 3 and 4. The IC’s are controlled by the microprocessor on unit A3. This happens via the data signal SDA (Serial DAta) and the synchronization signal SCL (Serial CLock). The enable signals

5.1 - 8 UNIT DESCRIPTIONS

DLEN0-HT (Data Latch ENable) and DLEN1-HT determine if D9001 or D9002 reacts on the SDA/SCL signals. The figure below indicates the relation between SDA and SCL.

D9003 and D9004 have outputs that control a number of on/off functions in the preamplifier. The IC’s are connected in cascade as a shift register. The IC’s are controlled by the microprocessor on unit A3. This happens via the data signal SDA (Serial DAta) and the synchronization signal SCL (Serial CLock). The enable signal STROBE0-HT in relation with SCL and SDA is indicated in the figure below. New data can be clocked into the shift register if STROBE0-HT is low. The new data becomes available at the outputs at the low-to-high transition of STROBE0-HT.

N9001, N9002 and N9003 are octal digital-to-analog converters (DAC’s). Each IC has 8 outputs capable of delivering a DC voltage that is adjustable between 0.5 and 9.5 V. This is controlled by the microprocessor on unit A3 via 6 bits of information that allow 64 adjustment steps. This happens via the data signal SDA (Serial DAta) and the synchronization signal SCL (Serial CLock). The data bits are preceeded by address bits that are compared with the fixed address A0/A1/A2 applied to pin 7, 8 and 9. This determines if N9001, N9002 or N9003 reacts on the bitstream.

Note: a solder pad is present in the SDA and SCL input lines of every IC. This gives the possibility

to isolate a suspected IC from the other in case a fault is suspected.

Figure 5.3 Relation of serial bus signals SDA and SCL

SDA

SCL

DATA LINE

STABLE:

DATA VALID

CHANGE OF DATA

ALLOWED

ST6265

Figure 5.4 Configuration of serial control bus

SDA

SCL STROBE-HT

HEF 4094

8 PARALLEL

OUTPUTS

8 PARALLEL

OUTPUTS

CONFIGURATION OF HEF 4094 BUS

INPUT PULSES FOR HEF 4094 BUS:

DATA IS CLOCKED INTO THE HEF 4094 IC AT POSITIVE SLOPE OF CLOCKPULSE:

SCL

SDA

STROBE-HT OUTPUTS

OLD DATA

NEW DATA

ST6266

UNIT DESCRIPTIONS 5.1 - 9

5.1.1.5 Main and delayed time base triggering

Diagram 12

The main time base triggering (MTR) is mainly formed by IC D6541. The other IC D6621 is the peakpeak detector for the trigger level. The balanced input signal for triggering on vertical channels 1, 2, 3 or 4 is applied to pin 7 and 8. This signal can originate from one of the 4 vertical preamplifier sections where the source selection is also done. The dc biasing currents come from the circuit with V6506, V6507 and V6532. This circuit is also supplied with the line trigger sinewave signal MTRLINE that comes from the power supply. This signal can be used for mains/line triggering and is selected on the next diagram. The output signal of D6541 is available at pin 19 and 20. This signal is routed to the main time base (MTB) via the level shifters V6573 and V6574. The signal MTRVIDEO from output pin 2 of D6541 is routed to the TV trigger circuit.

The IC D6541 incorporates the filters for HF reject (external capacitor C6549), LF reject (external capacitor C6551) and AC (external capacitors C6559, C6561, C6562). These filter modes are switched with the control signals MTRLF-HD (pin 3) and MTRHF-HD (pin 14). Positive/negative slope and video are switched with the control signals MTRSLOPE (pin 21) and MTRTVSEL-HD (pin 4). The logic levels of these control signals are indicated in two tables on the diagram. The signal MTRSEN is a DAC output voltage that determines the gain of the trigger amplifier.

A balanced current signal leaves D6541 at pins 26 and 27. This signal is converted into a voltage signal via V6604 and V6606. The voltage signal is applied to pins 3 and 7 of the peak-peak detector D6621. This IC detects the positive and negative peak values of the trigger signal. It reduces in the peak-peak trigger mode (switched with MTRPPLEV-HD) the range of the level (LEVMTB) to just within the peak-peak signal value.

The output of the peak-peak detector is present at pin 14 and 15 and routed to level input pin 22 and 23 of D6541, via the level shifter with V6667, V6668, V6686 and V6687. At this point a level offset correction is also introduced via DAC signal MTRBAL. The level is fixed in TV trigger mode by giving signal LEVMTB a predefined fixed level. The output pulse MTRTVSYNC from the TV synchronization separator circuit (see next diagram) is applied to the base of V6687. This signal is interrupted if the TV trigger mode is off.

The series parallel converter D9011 has outputs that control a number of on/off functions in the MTB triggering. D9011 is controlled by the microprocessor on unit A3. This happens via the data signal SDA (Serial DAta) and the synchronization signal SCL (Serial CLock). The enable signal is STROBE1-HT.

Diagram 13

This diagram shows the TV trigger circuit. The signal MTRVIDEO from pin 2 of MTR circuit D6541 is applied to the input of the TV CLAMP circuit V6754/V6757/V6759/V6763/V6768. The peak level of the synchronization pulses is detected via V6757 and C6758. The TV signal at the base of V6768 is kept at a constant level via V6759 and V6754. Diode V6761 cuts off the video information so that only synchronization pulses are applied to input pin 2 of N6771.

The TV synchronization separator N6771 is able to decode three different types of sync pulses. The analog control signal MTRTVMODE at pin 6 can have 3 different values that determine the TV standard in which the circuit will work. The standards and respective control voltages are indicated in a table.

N6771 separates the TV synchronization pulses. The following signals are available at its outputs:

- Pin 1 carries negative going line (MTRTVL) pulses. These pulses can be applied to the MTB

trigger (MTR) section via multiplexer D6781. Via multiplexer D7711/3,4,5,9 they are applied to the delayed trigger (DTR) section.

- Pin 3 carries the negative going field pulses (MTRTVFR) that appear at the beginning of field 1

and field 2.

- Pin 7. The signal is high during field 1 and low during field 2. Field 1 and Field 2 together form one

frame.

5.1 - 10 UNIT DESCRIPTIONS

The set/reset flipflops D6779 make the field 1 (MTRTVFLD1) and field 2 (MTRTVFLD2) pulses. As input signals are used the output signals at pin 7 and 3 of N6771.

The multiplexers D6781 and D7771 select the TV and line trigger sources for MTR and DTR:

- The MTB TV trigger signal is MTRTVSYNC. It originates from D6781/14.

- The DTB TV trigger signal is DTRTVL. It originates from D7711/15.

- The signal VSYNC from D6781/4 is not used: it will be used for extensions such as digital signal

storage.

- The MTB mains/line trigger signal is MTRLINE. It is switched via D5001/10,11,12.

- The DTB mains/line trigger signal is DTRLINE. It originates from D7711/13.

- Signal VSYNC carries the selected TV field 1 or TV field 2 pulse. This signal is used on the digitizer

unit A8. It is routed via socket X6794 on unit A1 to X8505 on unit A8.

Diagram 14

This diagram shows the DTB trigger (DTR) circuits. This circuit is build up around D7541. It is a simplified replica of the main trigger circuit. This because of the fact that the DTR is not equipped with peak-peak trigger facility. The level signal LEVDTB is applied almost directly to pin 22 and 23 of D7541. The transistors V7686 and V7687 are used to convert an asymmetrical LEVDTB signal into a symmetrical signal. At this point the TV line synchronization pulses (DTRTVL) are applied to the delayed trigger section when required.

The XDEFL CIRCUIT is used for X-DEFLection via the balanced X deflection signals DTRXDEF1 and DTRXDEF0 (pin 15 and 16 of D7541). The outputs of the circuit are TBXOUT1/TBXOUT0 and are applied to the time base section. It is there where the selection is done between X- deflection signal, MTB sawtooth and DTB sawtooth. Position control is achieved by signal DTRXPOS which is derived from LEVDTB via switch D7711/4,9,3. This switch is indicated on the preceding circuit diagram.

D9013 is used to determine the modification state of the unit A1. This is important in connection with the microprocessor hardware. The 8 outputs of D9013 are made high one by one after the oscilloscope is turned on. Via output diodes V7801 ... V7808 the high level is passed through. Depending on the modification state of the unit, one or more diodes are inserted into the p.c.b.. This gives the possibility to program 256 different modification levels.

5.1.1.6 Main and delayed time base and control logic

Diagram 15

This diagram incorporates the control logic for the main and delayed time base. This logic consists mainly of IC D8004. Also the input signal for the final Z-amplifier is generated on this diagram and occurs in D8003.

The selected trigger signals for the main time base are MTRIG0/MTRIG1 and are applied to pin 7 and pin 6 of D8004. This results via output pin 24 and V8013/V8014 into signal MTBGATE that starts the main time base (MTB). Signal STRCALM-HT is used to start the MTB via V8003. This occurs during autocalibration of the MTB.

The signal ALTCLK is derived here via V8018. This signal is used for display switching in ALTernate display mode. This happens in D9009 in the section that controls the display and trigger sources.

The selected trigger signals for delayed time base (DTB) are DTRIG0/DTRIG1 and are applied to pin 9 and pin 8 of D8004. This results via output pin 18 and V8012/V8011 into signal DTBGATE that starts the DTB. Signal STRCALD-HT is used to start the DTB via V8007. This occurs during autocalibration of the DTB.

D8004 has inputs and outputs with the following functions:

- TBEOHO-LX goes low at the end of the hold-off period.

- TBAUTO-LD is low if auto free run mode is active.

- TBEOM-HX goes high at the end of the MTB sweep.

- TBSTD-LX goes low to start the DTB sweep.

- TBEOD-HX goes high at the end of the delayed sweep.

UNIT DESCRIPTIONS 5.1 - 11

- TBNOTTR-HT goes high if the MTB is not triggered.

- TBSEL selects MTB if high and DTB if low.

- TBSSG-HT goes high at the end of a single sweep.

- DSOM (pin 2) goes high if a MTB trigger occurs. The connected circuit with V8023/8024 generates

signal DSOMOUT that is routed via coax socket X8011 to socket X8503 on digitizer unit A8.

- DSOD (pin 14) goes high if a DTB trigger occurs. The connected circuit with V8029/V8031 generates

signal DSODOUT that is routed via coax socket X8014 to socket X8501 on digitizer unit A8.

- DSODGATE from V8012/V8011 informs the digitizer on unit A8 that the analog delayed sweep is

on. The signal is routed from coax socket X8013 to socket X8502.

- TVHOLD-LD is generated on the digitizer and can extend the hold off time of the main time base.

This is used in TV trigger mode. The signal is routed from X8504 on unit A8 to X6010 on unit A1.

- TBHOTXT informs the digitizer A8 about the presence of the hold off period of the analog time

base. The signal is routed to X8101/A12 on unit A8 via the connector board A10.

V8061/V8062/V8063/V8066 form the "V peak-peak circuit". It plays a role as the automatic positioning of the cursors on the top and bottom of the signal (Vpp mode). This function works via the DTB trigger circuit and is mainly software based. V8062/V8063 form a set-reset flipflop with inputs with hysteresis. The flipflop is set with the DSOD pulse that goes high at the moment that a DTB trigger pulse is detected. This is signalled to the microprocessor via V8066 which makes the TTL signal VPPTEST-LD. The shape of the waveform is scanned by the microprocessor by monitoring the signal VPPTEST-LD at different DTB trigger LEVEL positions. The flipflop is reset by the microprocessor via signal STRCALD-HT.

The balanced output signals ZTRA0 and ZTRA1 from pin 10 and 11 of D8003 are applied to the final Z-amplifier in order to control the intensity on the CRT screen. An important input signal is TBZB from D8004/19. This signal is high if the MTB sweep is on and during this time the light on the CRT is on. The intensified part during the time that the DTB sweep is on is switched on if signal TBZA is high. TBZA originates from D8004/20. The signal CHBL that is applied to D8003/15 is influenced from the chopper blanking signal CHBLANK-HX and from the external Z-MODulation signal. The DAC output signals TBINTRAT-XA (pin 3) and INTTRA respectively influence the intensity ratio between MTB and DTB display and the total intensity on the CRT. The signal TBXDEFL-LD (pin 6) switches the light continuously on if it is low. This happens in the XDEFLection mode.

The circuit with V8002/V8006 is used for Z-MODulation via the BNC socket at the rear of the oscilloscope. The output signal of the circuit is TBZEXT and it is applied to D8003/16.

D9008 has outputs that control a number of on/off functions. The IC’s of this type are connected in cascade as a shift register. The IC’s are controlled by the microprocessor on unit A3. This happens via the data signal TBD01 (from the preceding D9011); the synchronization signal TBSCL (Time Base Serial CLock). The enable signal is STROBE1-HT. New data can be clocked into the shift register if STROBE1-HT is low. The new data becomes available at the outputs at the low-to-high transition of STROBE1-HT.

N8005 is an octal digital-to-analog converter. The IC has 8 outputs that can deliver a DC voltage that is adjustable between 0.5 and 9.5 V. This is controlled by the microprocessor on unit A3 via 6 bits of information that allow 64 adjustment steps. This happens via the data signal SDA (Serial DAta) and the synchronization signal SCL (Serial CLock). The data bits are preceeded by address bits that are compared with the fixed address A0/A1/A2 applied to pin 7, 8 and 9. This determines if N8005 or similar IC’s in the instrument will react on the bitstream.

Note: a solder pad is present in the SDA and SCL input lines of each IC. This gives the possibility

to isolate one IC from the others in case a fault is suspected.

5.1 - 12 UNIT DESCRIPTIONS

Diagram 16

This diagram indicates the timing circuits for the MTB. The principle of the time base is that a capacitor is charged with a constant current. This gives a time-linear voltage across the capacitor; the so- called sawtooth or sweep signal. The timing capacitance consists of C6011 that is always in circuit and C6012, C6013 that are activated via the switching transistors V6016 and V6019. The MTB control is done in IC D6011.

The constant current is supplied via transistor V6003 and V6005. The current source consists of voltage divider R6002 through R6007 with precision resistors. The voltage across this divider can be influenced by DAC output voltage MTBVAR via N6007/5,6,7 and V6001. This is necessary for continuous time/div control (VAR) and calibration. The voltage on a tap of the voltage divider can be selected via multiplexer D6001. This voltage (MCSCONTROL) is applied to the base of V6003 and V6004. This occurs via operational amplifier N6006. Via multiplexer D6002 two different emitter resistance values can be selected for V6003 and another two for V6004. The resistance values differ by a factor of 10: the emitter resistance for V6003 is switchable between R6014 (time base magnifier x10) and R6013 (magnifier x1). The emitter resistance for V6004 is switchable between R6016 (time base magnifier x10) and R6015 (magnifier x1).

The current from V6004 is applied to pin 16 of D6011 and is used as a reference. The sawtooth that is generated across the timing capacitor(s) is applied to pin 18 of D6011. Inside this IC is the time base switching transistor. The start of the sawtooth is initiated by signal MTBGATE that is applied to pin 20 of D6011. The sawtooth is also applied to pin 17 and converted into a balanced output signal that is available pin 12 and 13. The MTB sweep pickoff circuit consists of Source follower V6013 (and matching V6014) and emitter follower V6012. Horizontal position control is achieved via DAC output signal TBXPOS at pin 14.

Input signal TBCALREF at D6011/28 and output signal MTBCALTST at D6011/24 provide autocalibration of the time base. The sweep is switched on via STRCALM-HT and MTBGATE and compared with reference voltage TBCALREF. Via switching of output signal MTBCALTST, the microprocessor knows if the current source delivers the correct current. In case of inaccuracies the microprocessor makes corrections.

The start of the DTB is initiated by a low level of signal TBSTD-LX at pin 1 of D6011. The signal is generated via comparison of the MTB sawtooth signal and the adjustable DC voltage DTBM (delay time multiplier). The DTBM signal is coming from DAC output N6014/6 via operational amplifier N6008/5,6,7.

The signal TBEOM-HX at pin 4 of D6011 becomes high at the end of the MTB sweep. The signal TBEOHO-LX at pin 5 of D6011 becomes low at the end of the hold off period. The length of the hold off period is determined by the DAC output voltage HOLDOFF that is applied to D6011/7.

The MTB is switched on by making MTBONOFF (D6011/11) high. This signal is derived from control signal TBSEL. TBSEL is high during X deflection by the MTB and low during DTB. The MTB is also off in external X- deflection mode.

V6006 is on during the fast time base positions. It activates a stabilizing circuit that is connected with D6011/21.

The circuit with V6042 and C6033 assures that the hold off time in the fastest time base positions will never become shorter than 3 us. The circuit with C6035, V6002, C6017, V6008 and C6415 is responsable for the hold off timing. C6035 is always in circuit and C6017 and C6415 are activated by switching transistors. The capacitors are charged in parallel with the MTB timing capacitors. During the hold-off time that follows they are discharged by a current source inside D6011. The hold- off time can be varied by varying the discharging current.

UNIT DESCRIPTIONS 5.1 - 13

The table shows the active main time base sections as a function of time/div setting:

Diagram 17

This diagram indicates the timing circuits for the DTB. It is basically identical to the diagram of the MTB. For a description refer to the explanation of the corresponding circuit parts in diagram 16. The additional parts in this diagram are explained below.

The point where the input signals for the final X amplifier are applied is present on this diagram. This point is formed by the emitters of V7031 and V7032. The balanced signals that are applied are the combined MTB and DTB outputs TBXOUT0/TBXOUT1 and the external X-DEFLection signals TBXOUT0-XA/TBXOUT1-XA.

The circuit with N7016 makes an accurate voltage +15TBREF for the MTB and DTB timing circuits. Also the TBCALREF voltage for time base calibration is made here. As a reference for this circuit the +10VREF is used.

The circuit with D7005 converts the 5 digital 0V/5V signals into one analog signal with 32 possible levels. This signal can be read by an analog input of the microprocessor.

The circuit with multiplexer D7004 selects accurate voltages that come from a divider network with precision resistors R7064 through R7067. Operational amplifier N7014/2,3,6 is supplied with these voltages in order to calibrate the X-path from the MTB. Operational amplifier N7015/2,3,6 does the same for DTB. Voltage DSW (present at the DTB output) is made equal to the selected voltage from the voltage divider R7064 through R7067. This occurs via feedback signal DCLOOP. This gives a defined input voltage for the X-path (including the D7011

main time base

Time Current source Charge Timing caps Hold off caps

/div MTBI2 .I1 .I0 .I10 Current

V6005/c

C6012 MTBC2

C6013 MTBC3

C6415 HONAN

C6017 HOMU

0.5s

0.2s

0.1s 50ms 20ms 10ms 5ms 2ms 1ms .5ms .2ms .1ms 50us 20us 10us 5us 2us 1us .5us .2us .1us 50ns 20ns

L L L L L L L H H L L L L L L L H H L L L L H

L L H L L H H L L L L H L L H H L L L L H H L

L H L L H L H L H L H L L H L H L H L H L H L

L L L H H H H H H L L L H H H H H H H H H H H

8uA 18uA 35uA 70uA 175uA 350uA 700uA

1.75mA

3.5mA 8uA 18uA 35uA 70uA 175uA 350uA 700uA

1.75mA

3.5mA 70uA 175uA 350uA 700uA

1.75mA

L L L L L L L L L H H H H H H H H H L L L L L

H H H H H H H H H L L L L L L L L L L L L L L

H H H H H H H H H H H L L L L L L L L L L L L

H H H H H L L L L L L L L L L L L L L L L L L

5.1 - 14 UNIT DESCRIPTIONS

output stage). The output voltage XCAL at the horizontal deflection plates of the CRT is measured and horizontal calibrations are performed. During normal oscilloscope functioning the multiplexer connects pin 3 + 4 and pin 13 + 11. This switches V7093 and V7094 on and the feedback paths for MTB and DTB are interrupted.

The table shows the active delayed time base sections as a function of time/div setting:

5.1.2 Signal name list

Note: In the signal name list you find the itemnumber of the component that is source or destination.

Behind this itemnumber (separated by ":") you find the number of the diagram where the source/destination can be found.

NAME MEANING SOURCE DESTINATION

ALTCLK ALTERNATE DISPLAY MODE CLOCK V8018:15 V5503:10

ATCAL SIGNAL FOR GAIN CALIBRATION N1104:05 R1008:01

R2008:02 R3008:03

R4008:04 AT1AC/DC AC/DC INPUT COUPLING SELECTION CH1 D9001:11 K1002:01 AT1LFCAL LF CORRECTION CONTROL SIGNAL CH1 N9001:11 R1102:05 AT1LFCOR0 LF CORRECTION 0 CH1 N1102:05 R1029:01 AT1LFCOR1 LF CORRECTION 1 CH1 N1103:05 R1028:01 AT1LOOPCAL LF GAIN CONTROL CH1 N9001:11 R1113:05 AT1LOOPCOR LF GAIN CONTROL IN FEEDBACK LOOP CH1 R1113:05 V1001:01 AT1OFFSET OFFSET CONTROL SIGNAL CH1 N9001:11 R1039:01 AT1OUT0 ATTENUATOR 1 OUTPUT 0 CH1 R1074:01 D1201:06 AT1OUT1 ATTENUATOR 1 OUTPUT 1 CH1 V1013:01 D1201:06 AT1PROBE PROBE DETECTION SIGNAL CH1 X1002:01 R1096:05 AT1PROT 50Ω PROTECTION CH1 R1011:01 N1101:05 AT1.50E 50 Ω INPUT IMPEDANCE SELECTION CH1 D9001:11 K1001:01

delayed time base

Time Current source Charge Timing capacitor

/div DTBI2 .I1 .I0 .I10 Current

V7005/c

C7012 DTBC2

.5ms .2ms .1ms 50us 20us 10us 5us 2us 1us

.5us .2us .1us 50ns 20ns

L L L L L L L H H

L L L L H

L L H L L H H L L

L L H H L

L H L L H L H L H

L H L H L

L L L H H H H H H

H H H H H

8uA 18uA 35uA 70uA 175uA 350uA 700uA

1.75mA

3.5mA

70uA 175uA 350uA 700uA

1.75mA

H H H H H H H H H

L L L L L

UNIT DESCRIPTIONS 5.1 - 15

AT1/001 /1 ATTENUATOR SELECTION CH1 D9001:11 K1003:01 AT1/010 /10 ATTENUATOR SELECTION CH1 D9001:11 K1004:01 AT1/100 /100 ATTENUATOR SELECTION CH1 D9001:11 K1006:01 AT1/2.5 /2.5 ATTENUATOR SELECTION CH1 D9001:11 V1017:01 AT12REP COMMON FOR ALL RELAIS CH 1, 2 D9001:11 K1001...

K1006:01

K2001...

K2006:02

AT2AC/DC AC/DC INPUT COUPLING SELECTION CH2 D9001:11 K2002:02 AT2LFCAL LF CORRECTION CONTROL SIGNAL CH2 N9001:11 R2102:05 AT2LFCOR0 LF CORRECTION 0 CH2 N1102:05 R2029:02 AT2LFCOR1 LF CORRECTION 1 CH2 N1103:05 R2028:02 AT2LOOPCAL LF GAIN CONTROL CH2 N9001:11 R2113:05 AT2LOOPCOR LF GAIN CONTROL IN FEEDBACK LOOP CH2 R2113:05 V2001:02 AT2OFFSET OFFSET CONTROL SIGNAL CH2 N9002:11 R2039:02 AT2OUT0 ATTENUATOR 2 OUTPUT 0 CH2 R2074:02 D2201:06 AT2OUT1 ATTENUATOR 2 OUTPUT 1 CH2 V2113:02 D2201:06 AT2PROBE PROBE DETECTION SIGNAL CH2 X2002:02 R2096:05 AT2PROT 50Ω PROTECTION CH2 R2011:02 N1101:05 AT2.50E 50 Ω INPUT IMPEDANCE SELECTION CH2 D9001:11 K2001:02 AT2/001 /1 ATTENUATOR SELECTION CH2 D9001:11 K2003:02 AT2/010 /10 ATTENUATOR SELECTION CH2 D9001:11 K2004:02 AT2/100 /100 ATTENUATOR SELECTION CH2 D9001:11 K2006:02 AT2/2.5 /2.5 ATTENUATOR SELECTION CH2 D9001:11 V2017:02

AT3AC/DC AC/DC INPUT COUPLING SELECTION CH3 D9002:11 K3002:03 AT3LFCAL LF CORRECTION CONTROL SIGNAL CH3 N9003:11 R3102:05 AT3LFCOR0 LF CORRECTION 0 CH3 N3102:05 R3029:03 AT3LFCOR1 LF CORRECTION 1 CH3 N3103:05 R3028:03 AT3LOOPCAL LF GAIN CONTROL CH3 N9003:11 R3113:05 AT3LOOPCOR LF GAIN CONTROL IN FEEDBACK LOOP CH3 R3113:05 V3001:03 AT3OFFSET OFFSET CONTROL SIGNAL CH3 N9002:11 R3039:03 AT3OUT0 ATTENUATOR 3 OUTPUT 0 CH3 R3074:03 D3201:07 AT3OUT1 ATTENUATOR 3 OUTPUT 1 CH3 V3013:03 D3201:07 AT3PROBE PROBE DETECTION SIGNAL CH3 X3002:03 R3096:05 AT3PROT 50Ω PROTECTION CH3 R3011:03 N1101:05 AT3.50E 50 Ω INPUT IMPEDANCE SELECTION CH3 D9002:11 K3001:03 AT3/001 /1 ATTENUATOR SELECTION CH3 D9002:11 K3003:03 AT3/010 /10 ATTENUATOR SELECTION CH3 D9002:11 K3004:03 AT3/100 /100 ATTENUATOR SELECTION CH3 D9002:11 K3006:03 AT3/2.5 /2.5 ATTENUATOR SELECTION CH3 D9002:11 V3016:03 AT34REP COMMON FOR ALL RELAIS CH 3, 4 D9002:11 K3001...

K3006:03

K4001...

K4006:04

AT4AC/DC AC/DC INPUT COUPLING SELECTION CH4 D9002:11 K4002:04 AT4LFCAL LF CORRECTION CONTROL SIGNAL CH4 N9003:11 R4102:05 AT4LFCOR0 LF CORRECTION 0 CH4 N3102:05 R4029:04 AT4LFCOR1 LF CORRECTION 1 CH4 N3103:05 R4028:04 AT4LOOPCAL LF GAIN CONTROL CH4 N9003:11 R4113:05 AT4LOOPCOR LF GAIN CONTROL IN FEEDBACK LOOP CH4 R4113:05 V4001:04 AT4OFFSET OFFSET CONTROL SIGNAL CH4 N9003:11 R4039:04 AT4OUT0 ATTENUATOR 4 OUTPUT 0 CH4 R4074:04 D4201:07 AT4OUT1 ATTENUATOR 4 OUTPUT 1 CH4 R4013:04 D4201:07

5.1 - 16 UNIT DESCRIPTIONS

AT4PROBE PROBE DETECTION SIGNAL CH4 X4002:04 R4096:05 AT4PROT 50Ω PROTECTION CH4 R4011:04 N1101:05 AT4.50E 50 Ω INPUT IMPEDANCE SELECTION CH4 D9002:11 K4001:04 AT4/001 /1 ATTENUATOR SELECTION CH4 D9002:11 K4003:04 AT4/010 /10 ATTENUATOR SELECTION CH4 D9002:11 K4004:04 AT4/100 /100 ATTENUATOR SELECTION CH4 D9002:11 K4006:04 AT4/2.5 /2.5 ATTENUATOR SELECTION CH4 D9002:11 V4017:04

CNT1CH-HX CHANNEL 1 ON/OFF SIGNAL R5559:10 D1301:08 CNT1DT-HT DTB TRIGGER ON CH1 ON/OFF D5502:10 D1301:08 CNT1MT-HT MTB TRIGGER ON CH1 ON/OFF D5501:10 D1301:08 CNT2CH-HX CHANNEL 2 ON/OFF SIGNAL R5558:10 D2301:08 CNT2DT-HT DTB TRIGGER ON CH2 ON/OFF D5502:10 D2301:08 CNT2MT-HT MTB TRIGGER ON CH2 ON/OFF D5501:10 D2301:08 CNT3CH-HX CHANNEL 3 ON/OFF SIGNAL R5557:10 D3301:08 CNT3DT-HT DTB TRIGGER ON CH3 ON/OFF D5502:10 D3301:08 CNT3MT-HT MTB TRIGGER ON CH3 ON/OFF D5501:10 D3301:08 CNT4CH-HX CHANNEL 4 ON/OFF SIGNAL R5556:10 D4301:08 CNT4DT-HT DTB TRIGGER ON CH4 ON/OFF D5502:10 D4301:08 CNT4MT-HT MTB TRIGGER ON CH4 ON/OFF D5501:10 D4301:08 CPBLANK-HX CHOPPER BLANKING SIGNAL R5517:10 C8002:15

DLDOFFSET DELAY LINE DRIVER OFFSET N9003:11 R5018:09 DLDOUT0 DELAY LINE DRIVER OUTPUT 0 R5063:09 DELAY LINE DLDOUT1 DELAY LINE DRIVER OUTPUT 1 R5062:09 DELAY LINE DLEN0-HT DATA LATCH ENABLE 0 X9001:18 D9001:11 DLEN1-HT DATA LATCH ENABLE 1 X9001:18 D9002:11 DLEN2-HT DATA LATCH ENABLE 2 X9001:18 D9006:16 DSOD SET OF FLIPFLOP AUTOPOS Y-CURSOR D8004:15 R8057:15 DTBCALTST DTB CAL TEST SIGNAL D7011:17 D7005:17 DTBVAR DTB VARIABLE CONTROL SIGNAL N8005:15 R7009:17 DTBGATE DTB GATE SIGNAL V8011:15 D7011:17

DTRHF-HD DELAYED TRIGGER HF FILTER SWITCH D9012:14 R7544:14 DTRIG0 DELAYED TRIGGER OUTPUT SIGNAL 0 V7574:14 D8004:15 DTRIG1 DELAYED TRIGGER OUTPUT SIGNAL 1 V7573:14 D8004:15 DTRLF-HD DELAYED TRIGGER LF FILTER SWITCH D9007:17 R7542:14 DTRLINE X-DEFLECTION VIA LINE SIGNAL D7711:13 V7506:14 DTRLINESW-HD X-DEFLECTION VIA LINE SWITCHING D9012:14 D7711:13 DTRSEN DELAYED TRIGGER SENSITIVITY CONTROL N8005:15 R7554:14 DTRSLOPE DELAYED TRIGGER SLOPE CONTROL D9007:17 R7547:14 DTRTVL DELAYED TRIGGER TV LINE TRIG SIGNAL D7711:13 R7696:14 DTRTVSEL-HD DELAYED TV TRIGGER SELECTION R7543:14 D7711:13 DTRXDEF0 DELAYED TRIGGER X DEFLECTION SIGNAL 0 D7541:14 R7754:14 DTRXDEF1 DELAYED TRIGGER X DEFLECTION SIGNAL 1 D7541:14 R7753:14 DTRXDSEL-HD DELAYED TRIGGER X DEFLECTION SELECTIOND9012:14 R7546:14

FNCBWL BANDWIDTH LIMITER ON/OFF D9003:11 D1301:08

D2301:08

D3301:08

D4301:08 FNC1DTR0 DTB TRIGGER ON CH1 OUTPUT SIGNAL 0 D1301:08 R7522:14 FNC1DTR1 DTB TRIGGER ON CH1 OUTPUT SIGNAL 1 D1301:08 R7521:14 FNC1MTR0 MTB TRIGGER ON CH1 OUTPUT SIGNAL 0 D1301:08 R6522:12 FNC1MTR1 MTR TRIGGER ON CH1 OUTPUT SIGNAL 1 D1301:08 R6521:12 FNC1OUT0 CHANNEL 1 OUTPUT SIGNAL 0 D1301:08 R1313:09 FNC1OUT1 CHANNEL 1 OUTPUT SIGNAL 1 D1301:08 R1314:09

UNIT DESCRIPTIONS 5.1 - 17

FNC2DTR0 DTB TRIGGER ON CH2 OUTPUT SIGNAL 0 D2301:08 R7524:14 FNC2DTR1 DTB TRIGGER ON CH2 OUTPUT SIGNAL 1 D2301:08 R7523:14 FNC2MTR0 MTB TRIGGER ON CH2 OUTPUT SIGNAL 0 D2301:08 R6524:12 FNC2MTR1 MTR TRIGGER ON CH2 OUTPUT SIGNAL 1 D2301:08 R6523:12 FNC2OUT0 CHANNEL 2 OUTPUT SIGNAL 0 D2301:08 R2313:09 FNC2OUT1 CHANNEL 2 OUTPUT SIGNAL 1 D2301:08 R2314:09

FNC3DTR0 DTB TRIGGER ON CH3 OUTPUT SIGNAL 0 D3301:08 R7527:14 FNC3DTR1 DTB TRIGGER ON CH3 OUTPUT SIGNAL 1 D3301:08 R7526:14 FNC3MTR0 MTB TRIGGER ON CH3 OUTPUT SIGNAL 0 D3301:08 R6527:12 FNC3MTR1 MTR TRIGGER ON CH3 OUTPUT SIGNAL 1 D3301:08 R6526:12 FNC3OUT0 CHANNEL 3 OUTPUT SIGNAL 0 D3301:08 R3313:09 FNC3OUT1 CHANNEL 3 OUTPUT SIGNAL 1 D3301:08 R3314:09

FNC4DTR0 DTB TRIGGER ON CH4 OUTPUT SIGNAL 0 D4301:08 R7529:14 FNC4DTR1 DTB TRIGGER ON CH4 OUTPUT SIGNAL 1 D4301:08 R7528:14 FNC4MTR0 MTB TRIGGER ON CH4 OUTPUT SIGNAL 0 D4301:08 R6529:12 FNC4MTR1 MTR TRIGGER ON CH4 OUTPUT SIGNAL 1 D4301:08 R6528:12 FNC4OUT0 CHANNEL 4 OUTPUT SIGNAL 0 D4301:08 R4313:09 FNC4OUT1 CHANNEL 4 OUTPUT SIGNAL 1 D4301:08 R4314:09

FNCYOP0 Y-OUT OPTION SIGNAL 0 D1301:08 Y-option FNCYOP1 Y-OUT OPTION SIGNAL 1 D1301:08 Y-option

HOLDOFF HOLD OFF CONTROL SIGNAL X9002:18 R6032:16

INTTRA TRACE INTENSITY CONTROL X9002:18 R8049:15

LEVDTB DELAYED TRIGGER LEVEL CONTROL X9002:18 R7681:14 LEVMTB MAIN TRIGGER LEVEL CONTROL X9002:18 R6622:12 LINE LINE TRIGGER SIGNAL X9001:18 R7711:13

MTBCALTST MTB CAL TEST SIGNAL D6011:16 D7005:17 MTBGATE MTB GATE SIGNAL V8014:15 D6011:16 MTBVAR MTB VARIABLE CONTROL SIGNAL X9002:18 R6009:16 MTRBAL MAIN TRIGGER BALANCE N8005:15 R6709:12 MTRHF-HD MAIN TRIGGER HF FILTER SWITCH D9008:15 R6544:12 MTRIG0 MAIN TRIGGER OUTPUT SIGNAL 0 V6574:12 D8004:15 MTRIG1 MAIN TRIGGER OUTPUT SIGNAL 1 V6573:12 D8004:15 MTRLF-HD MAIN TRIGGER LF FILTER SWITCH D9011:12 R6542:12 MTRLINE MAIN TRIGGER LINE TRIGGER SIGNAL D5001:13 V6506:12 MTRPPLEV-HD MAIN TRIGGERING AUTO PP OFF D9011:12 V6628:12 MTRSEN MAIN TRIGGER SENSITIVITY CONTROL N8005:15 R6554:12 MTRSLOPE MAIN TRIGGER SLOPE CONTROL D9011:12 R6547:12 MTRTVMODE MAIN TRIGGER TV SYSTEM SELECTION N8005:15 R6772:13 MTRTVSEL-HD MAIN TV TRIGGER SELECTION D9011:12 V6757:13 MTRVIDEO MAIN TV TRIGGER INPUT SIGNAL D6541:12 V6754:13

PA1/2 ATTENUATION /2 CONTROL CH1 D9003:11 D1201:06 PA1ICL CLAMP LEVEL CURRENT CH1 V1206:06 D1201:06 PA1ISY SUPPLY CURRENT CH1 V1207:06 D1201:06 PA1LSA LEVEL SHIFT A CH1 V1208:06 R1216:06 PA1LSB LEVEL SHIFT B CH1 V1209:06 R1217:06 PA1OFFSET OFFSET INPUT CIRCUIT CH1 N9001:11 R1203:06 PA1OFFSTRG OFFSET LEVEL SHIFTER CH1 N9001:11 R1229:06 PA1OUT0 OUTPUT SIGNAL 0 CH1 V1202:06 R1301:08

5.1 - 18 UNIT DESCRIPTIONS

PA1OUT1 OUTPUT SIGNAL 1 CH1 V1201:06 R1302:08 PA1X1 GAIN X1 CONTROL CH1 D9003:11 D1201:06 PA1X5 GAIN X5 CONTROL CH1 D9003:11 D1201:06 PAVREF PREAMPL REFERENCE VOLTAGE N1251:06 R1200:06

R2200:06

R3200:07

R4200:07

PA2/2 ATTENUATION /2 CONTROL CH2 D9003:11 D2201:06 PA2ICL CLAMP LEVEL CURRENT CH2 V2206:06 D2201:06 PA2ISY SUPPLY CURRENT CH2 V2207:06 D2201:06 PA2LSA LEVEL SHIFT A CH2 V2208:06 R2216:06 PA2LSB LEVEL SHIFT B CH2 V2209:06 R2217:06 PA2OFFSET OFFSET INPUT CIRCUIT CH2 N9002:11 R2203:06 PA2OFFSTRG OFFSET LEVEL SHIFTER CH2 N9002:11 R2229:06 PA2OUT0 OUTPUT SIGNAL 0 CH2 V2202:06 R2301:08 PA2OUT1 OUTPUT SIGNAL 1 CH2 V2201:06 R2302:08 PA2X1 GAIN X1 CONTROL CH2 D9003:11 D2201:06 PA2X5 GAIN X5 CONTROL CH2 D9003:11 D2201:06

PA3/2 ATTENUATION /2 CONTROL CH3 D9004:11 D3201:07 PA3ICL CLAMP LEVEL CURRENT CH3 V3206:07 D3201:07 PA3ISY SUPPLY CURRENT CH3 V3207:07 D3201:07 PA3LSA LEVEL SHIFT A CH3 V3208:07 R3216:07 PA3LSB LEVEL SHIFT B CH3 V3209:07 R3217:07 PA3OFFSET OFFSET INPUT CIRCUIT CH3 N9003:11 R3203:07 PA3OFFSTRG OFFSET LEVEL SHIFTER CH3 N9003:11 R3229:07 PA3OUT0 OUTPUT SIGNAL 0 CH3 V3202:07 R3301:08 PA3OUT1 OUTPUT SIGNAL 1 CH3 V3201:07 R3302:08 PA3X1 GAIN X1 CONTROL CH3 D9004:11 D3201:07 PA3X5 GAIN X5 CONTROL CH3 D9004:11 D3201:07

PA4/2 ATTENUATION /2 CONTROL CH4 D9004:11 D4201:07 PA4ICL CLAMP LEVEL CURRENT CH4 V4206:07 D4201:07 PA4ISY SUPPLY CURRENT CH4 V4207:07 D4201:07 PA4LSA LEVEL SHIFT A CH4 V4208:07 R4216:07 PA4LSB LEVEL SHIFT B CH4 V4209:07 R4217:07 PA4OFFSET OFFSET INPUT CIRCUIT CH4 N9003:11 R4203:07 PA4OFFSTRG OFFSET LEVEL SHIFTER CH4 N9003:11 R4229:07 PA4OUT0 OUTPUT SIGNAL 0 CH4 V4202:07 R4301:08 PA4OUT1 OUTPUT SIGNAL 1 CH4 V4201:07 R4302:08 PA4X1 GAIN X1 CONTROL CH4 D9004:11 D4201:07 PA4X5 GAIN X5 CONTROL CH4 D9004:11 D4201:07

POS1 POSITION CONTROL CH1 X9002:18 R1308:08 POS2 POSITION CONTROL CH2 X9002:18 R2308:08 POS3 POSITION CONTROL CH3 X9002:18 R3308:08 POS4 POSITION CONTROL CH4 X9002:18 R4308:08 PROBE1 PROBE DETECTION/50Ω PROTECTION CH1 R1093:05 X9001:18 PROBE2 PROBE DETECTION/50Ω PROTECTION CH2 R2093:05 X9001:18 PROBE3 PROBE DETECTION/50Ω PROTECTION CH3 R3093:05 X9001:18 PROBE4 PROBE DETECTION/50Ω PROTECTION CH4 R4093:05 X9001:18

UNIT DESCRIPTIONS 5.1 - 19

SCL SERIAL CLOCK X9001:18 D9009:10

D9001:11

D9002:11

D9003:11

D9004:11

D9006:16

D9007:17

D9008:15

D9011:12

D9012:14

N8005:15

N9001:11

N9002:11

N9003:11

R8403:16 SDA SERIAL DATA X9001:18 D9009:10

D9001:11

D9002:11

D9003:11

D9004:11

D9006:16

D9011:12

N8005:15

N9001:11

N9002:11

N9003:11

R8404:16 STRCALD-HT RESET FLIPFLOP AUTOPOS Y-CURSOR X9001:18 V8065:15

V8007:15 STROBE0-HT STROBE/ENABLE SIGNAL 0 X9001:18 D9003:11

D9004:11 STROBE1-HT STROBE/ENABLE SIGNAL 1 X9001:18 D9007:17

D9008:15

D9011:12

D9012:14

TBAUTO-LD TIME BASE AUTO FREE RUN CONTROL D9007:17 D8004:15 TBCALREF TIME BASE CALIBRATION REFERENCE V7011:17 D6011:16

D7011:17 TBD01 TIME BASE SERIAL DATA 01 D9011:12 D9008:15 TBD02 TIME BASE SERIAL DATA 02 D9008:15 D9007:17 TBD03 TIME BASE SERIAL DATA 03 D9007:17 D9012:14 TBEOM-HX TIME BASE END OF MAIN SWEEP D6011:16 D8004:15 TBEOD-HX TIME BASE END OF DELAYED SWEEP D7011:17 D8004:15 TBEOHO-LX TIME BASE END OF HOLD OFF D6011:16 D8004:15 TBHOTXT TIME BASE HOLD OFF FOR TEXT DISPLAY R8026:15 X9001:18 TBINTRAT-XA INTENS RATIO CONTROL SIGNAL N8005:15 R8007:15 TBNOTTR-HT TIME BASE NOT TRIGGERED SIGNAL D8004:15 D7005:17 TDADA TIME BASE SERIAL DATA R8404:16 N6014:16 TDACL TIME BASE SERIAL CLOCK R8403:16 D9006:16

D9007:17

D9008:15

D9011:12

D9012:14

N6013:16

N8005:15

5.1 - 20 UNIT DESCRIPTIONS

TBSEL TIME BASE MTB/DTB SELECTION R5501:10 R6018:16

R7028:17

R8072:15 TBSTD-LX TIME BASE START OF DTB D6011:16 D8004:15 TBSSG-HT TIME BASE END OF SINGLE SWEEP D8004:15 D7005:17 TBSMART TIME BASE TEST SIGNALS C7054:17 X9001:18 TBXDEFL-LD X DEFLECTION CONTROL SIGNAL D9012:14 V8015:15

R7772: TBXOUT0 TIME BASE OUTPUT 0 D6011:16 R7077:17

D7011:17 TBXOUT0-XA X DEFLECTION OUTPUT 0 R7754:14 V7031:17 TBXOUT1 TIME BASE OUTPUT 1 D6011:16 R7078:17

D7011:17 TBXOUT1-XA X DEFLECTION OUTPUT 1 R7753:14 V7032:17 TBXPOS TIME X POSITION R8411:16 R6017:16

R7099:17 TRASEP ANALOG TRACE SEPARATION SIGNAL X9002:18 R5021:09 TRASEP-HC DIGITAL TRACE SEPARATION CONTROL R5524:10 D5001:09

VAR1 VARIABLE GAIN CONTROL CH1 X9002:18 R1211:06 VAR2 VARIABLE GAIN CONTROL CH2 X9002:18 R2211:06 VAR3 VARIABLE GAIN CONTROL CH3 X9002:18 R3211:07 VAR4 VARIABLE GAIN CONTROL CH4 X9002:18 R4211:07 VPPTEST-LD VOLT PP TEST AUTOPOS Y-CURSOR V8066:15 D7005:17

XTRA0 X DEFLECTION OUTPUT SIGNAL 0 V7150:17 X9001:18 XTRA1 X DEFLECTION OUTPUT SIGNAL 1 V7151:17 X9001:18

ZTRA0 INTENSITY OUTPUT SIGNAL 0 D8003:15 X9001:18 ZTRA1 INTENSITY OUTPUT SIGNAL 1 D8003:15 X9001:18

UNIT DESCRIPTIONS 5.1 - 21

5.1.3 Unit lay-outs

Lay-out 1 - Large component side of signa l unit A1

5.1 - 22 UNIT DESCRIPTIONS

Lay-out 2 - Small component side of s ignal unit A1

UNIT DESCRIPTIONS 5.1 - 23

Lay-out 1a - Large component side detail of signal unit A1 for PM3384B

5.1 - 24 UNIT DESCRIPTIONS

Lay-out 1b - Large component side detail of signal unit A1 for PM3382B/92B

Lay-out 1c - Large component side detail of signal unit A1 for PM3370B/80B/90B

UNIT DESCRIPTIONS 5.1 - 25

5.1.4 Location list Signal Unit A1

’-L’ means that the component is located on the side with the large components. Otherwise the component is located on the side with small components (SMD’s: surface mounted devices)

C1000 F15-L C1001 F15-L C1002 F14 C1003 F14-L C1004 F14-L C1005 F15 C1006 F14-L C1007 F14-L C1008 F14 C1011 F14 C1012 F14 C1014 F13 C1018 E13 C1019 E13 C1020 F13-L C1021 F13-L C1022 F13 C1023 F13 C1025 F13 C1027 E13 C1031 E12 C1041 G13 C1042 G13 C1044 F12 C1045 F13-L C1046 F12 C1047 F13 C1048 G12 C1049 G13 C1051 F12 C1054 F12 C1055 F12 C1056 F12 C1057 F12 C1058 F12 C1059 F12 C1060 F12 C1061 F15 C1062 E15 C1063 F14 C1064 G14 C1066 G13 C1067 G13 C1068 E14 C1069 E14 C1071 E15 C1076 G15 C1077 F15 C1082 H10 C1085 G12-L C1086 F13

C1087 F12-L C1088 F12 C1101 G10 C1102 G10 C1151 H12 C1152 H11 C1153 G15 C1156 H11-L C1157 H11 C1158 H11-L C1159 G11 C1201 F10 C1204 G11 C1205 F11 C1208 F10 C1209 F10 C1210 F11 C1211 F11 C1250 G10 C1251 G9 C1252 G9 C1253 A8-L C1254 A9 C1301 F8 C1302 F8 C1303 G10 C1304 F8 C1305 F8 C1611 A11 C1651 G8-L C1652 G8 C1653 A7-L C1654 D8 C1656 G8-L C1657 D8 C1658 A7-L C1659 D8 C1661 D8 C1662 D8 C1668 A9-L C1669 A9 C1901 C7-L C1903 F10-L C1904 C10-L C1906 D7-L C1931 H8-L C1932 H8-L C2000 D15-L C2001 E15-L C2002 D14 C2003 D14-L

C2004 D14-L C2005 D15 C2006 D14-L C2007 D14-L C2008 D14 C2011 D14 C2012 D14 C2014 D13 C2018 D13 C2019 D13 C2020 D13-L C2021 E13-L C2022 D13 C2023 D13 C2025 D13 C2027 D13 C2031 D12 C2041 E13 C2042 E13 C2044 D12 C2045 D13-L C2046 D12 C2047 E13 C2048 E12 C2051 E12 C2054 D12 C2055 E12 C2056 D12 C2057 E12 C2058 D12 C2059 E12 C2060 D12 C2061 D15 C2062 D15 C2063 E14 C2064 E14 C2066 E13 C2067 E13 C2068 D14 C2069 D14 C2071 D15 C2072 D14 C2076 E15 C2077 D15 C2085 E12-L C2086 E13 C2087 D12-L C2088 E12 C2101 H10 C2102 H10 C2201 D10

C2204 E11 C2205 D11 C2208 E10 C2209 E10 C2210 D11 C2211 D11 C2301 E8 C2302 E8 C2303 E10 C2304 D8 C2305 D8 C3000 C15-L C3001 C15-L C3002 B14 C3003 B14-L C3004 C14-L C3005 C15 C3006 D14-L C3007 C14-L C3008 C14 C3011 C14 C3012 B14 C3014 C13 C3018 B13 C3019 B13 C3020 C13-L C3021 C13-L C3022 C13 C3023 C13 C3025 C13 C3027 B13 C3031 B12 C3041 D13 C3042 D13 C3044 C12 C3045 C13-L C3046 C12 C3047 C13 C3048 D12 C3051 C12 C3054 C12 C3055 C12 C3056 C12 C3057 C12 C3058 C12 C3059 C12 C3060 C12 C3061 C15 C3062 B15 C3063 C14 C3064 D14

5.1 - 26 UNIT DESCRIPTIONS

C3066 D13 C3067 D13 C3068 B14 C3069 B14 C3071 B15 C3072 C14 C3076 D15 C3077 C15 C3085 C12-L C3086 C13 C3087 C12-L C3088 C12 C3101 A10 C3102 A10 C3201 C10 C3204 D11 C3205 C11 C3208 D10 C3209 C10 C3210 C11 C3211 C11 C3301 C8 C3302 C8 C3303 D10 C3304 C8 C3305 C8 C4000 A15-L C4001 B15-L C4002 A14 C4003 A14-L C4004 A14-L C4005 A15 C4006 A14-L C4007 A14-L C4008 A14 C4011 A14 C4012 A14 C4014 A13 C4018 A13 C4019 A13 C4020 A13-L C4021 B13-L C4022 A13 C4023 A13 C4025 A13 C4027 A13 C4031 A12 C4041 B13 C4042 B13 C4044 A12 C4045 A13-L C4046 A12 C4047 B13 C4051 B12 C4054 A12 C4055 B12

C4056 A12 C4057 B12 C4058 A12 C4059 B12 C4060 A12 C4061 A15 C4062 A15 C4063 B14 C4064 B14 C4066 B13 C4067 B13 C4068 A14 C4069 A14 C4071 A15 C4072 A14 C4076 B15 C4077 A15 C4085 B12-L C4086 B13 C4087 A12-L C4088 B12 C4101 A10 C4102 A10 C4201 A10 C4204 B11 C4205 A11 C4208 B10 C4209 B10 C4210 A11 C4211 A11 C4301 B8 C4302 B8 C4303 B10 C4304 A8 C4305 A8 C5000 E5 C5001 E7 C5002 E6 C5003 E6 C5004 C6 C5005 C6 C5006 D6 C5007 C6 C5008 E7 C5010 D6 C5012 D6 C5015 D6 C5016 D5 C5017 C6 C5018 D6 C5501 D9 C5502 D10 C5503 D10 C5504 C9 C5505 D9 C5506 D9

C5507 D10 C5508 C10 C5509 C10 C5510 C10 C5511 C10 C5514 E9 C5513 D9 C5601 D9 C5602 C9-L C5603 C9 C5604 C9 C6000 B1-L C6001 D2-L C6002 B1 C6004 B2 C6005 B2 C6007 C1 C6008 A2 C6008 B1 C6009 C2 C6011 B2-L C6012 C2-L C6013 B2-L C6014 C2 C6015 C2 C6016 C2-L C6017 C3-L C6018 B1-L C6031 A3 C6032 A3 C6033 B3 C6035 B3-L C6038 C3 C6039 C3 C6062 D2 C6070 C4 C6071 B2 C6080 A4 C6093 G4-L C6094 G4-L C6095 B2 C6096 H3-L C6097 H3-L C6098 C3 C6101 A2 C6102 A2 C6103 A2 C6104 A2 C6105 A2 C6106 A2 C6107 A2 C6108 A2 C6109 A2 C6110 A2 C6111 A2 C6112 A2

C6113 A2 C6114 A1 C6115 A1 C6116 A1 C6117 A1 C6118 A2 C6305 B3 C6415 C3-L C6504 B6 C6549 B6 C6551 B6 C6557 C6 C6559 C6 C6561 C7-L C6562 C6-L C6581 B5 C6583 C5 C6617 B5 C6623 A5 C6624 A5 C6639 A5 C6642 A5 C6644 B5 C6647 B5 C6648 B5 C6649 A5 C6707 B4 C6751 B6 C6758 A6-L C6768 A6 C6773 A5 C6777 A6 C6779 B5 C6783 A5 C6787 A5 C6902 C6-L C6903 C6 C6904 B6 C6912 A7-L C6913 A7 C6922 A7-L C6923 A7 C6924 A5 C6932 A7-L C6933 A7 C6934 B6 C6942 C6-L C6943 C6 C6953 A5 C6962 B6-L C6963 A6 C7001 G1 C7002 F1 C7003 E1 C7004 F2 C7005 F2

Fluke PM3370B, PM3380B, PM3390B, PM3384B, PM3394B Service Manual

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