Agilent Technologies 35670-90066 User Manual

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Agilent 35670A Service Guide

Agilent Part Number 35670-90066 Printed in Malaysia

The Agilent 35670A at a Glance (Front Panel)

Agilent 35670A Front Panel

1-Use the softkeys to select items from the current menu. A softkey’s function is indicated by a video label on the analyzer’s screen.

Throughout this book, softkeys are printed like this: [

Hardkeys are front-panel buttons whose functions are always the same. They have a label printed directly on the key itself. Throughout this book, hardkeys are printed like this: [

FFT ANALYSIS

Inst Mode

2-The analyzer’s screen is divided into the menu area and the display area. The menu area displays video labels for the softkeys. The

data area displays measurement data and information about the parameter settings.

3-The [

] key returns the menu to the previous level.

Rtn

4-The POWER switch turns on the analyzer.

5-Use the SYSTEM keys to control various system-level functions. These functions include saving files, plotting measurement data,

and accessing online help.

6-Use the disk drive to save your work on 3.5 inch flexible disks.

7-The knob moves the markers and the cursor. It also steps through numeric values and scrolls through online help.

8-Use the DISPLAY keys to control what appears on the analyzer’s traces. They only affect how data is displayed; DISPLAY keys

do not change measurement parameters.

You can press keys in the DISPLAY menus without losing measurement parameters.

9-Use the MARKER keys to select a variety of marker features.

10-Use the MEASUREMENT keys to control the analyzer’s source and inputs. They also control measurement parameters. You

must make a new measurement if you change a MEASUREMENT parameter.

11-Use the numeric-entry keys to enter a numeric value.

12-The microphone power connector provides power (8 Vdc) for the Microphone Adapter Kit (Option UK4).

13-The connector area of the front panel has two different configurations. The standard analyzer has a source output connector and

two input connectors. The 4-channel analyzer (Option AY6) has four input connectors.

Range indicators are located next to each input connector. The upper LED is the over-range indicator (the signal level exceeds the current range setting). The lower LED is the half range indicator (the signal level exceeds half the current range setting).

14-A source on/off indicator is located at the left edge of the connector area.

The standard Agilent 35670A (2-channel) has a source connector on the front panel.

The Agilent 35670A at a Glance (Rear Panel)

Agilent 35670A Rear Panel

1-The GPIB connector links the Agilent 35670A to other GPIB devices. GPIB parameters are set in the [

[

Plot/Print

] menus.

Local/GPIB

] and

2-The SERIAL PORT and the PARALLEL PORT link the analyzer to plotters and printers. These parameters are set in the

[

Plot/Print

] menu.

3-The SOURCE connector outputs the analyzer’s source signal. An LED on the front panel indicates if the source is on or off. The

source parameters are set in the [

The standard Agilent 35670A (2-channel) also has a source connector on the front panel.

4-The EXT TRIG connector links the analyzer to an external trigger signal. The external trigger parameters are set in the [

menu.

5-The TACH connector links the analyzer to a tachometer. The tachometer parameters are set in the [

Source

] menu.

Input

Trigger

] menu.

6-The KEYBOARD connector attaches an optional keyboard to the analyzer.

7-The DC POWER connector accepts DC power levels from 12 - 28 Vdc (nominal).

8-The AC POWER connector accept a wide range of ac voltage levels.

9-The POWER SELECT switch determines whether the analyzer is powered via the AC POWER connector or the DC POWER

connector.

10-The EXT MONITOR port links the analyzer to multi-sync monitors.

]

Saftey Summary

The following general safety precautions must be observed during all phases of operation of this instrument. Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safety standards of design, manufacture, and intended use of the instrument. Agilent Technologies, Inc. assumes no liability for the customer’s failure to comply with these requirements.

GENERAL

This product is a Safety Class 1 instrument (provided with a protective earth terminal). The protective features of this product may be impaired if it is used in a manner not specified in the operation instructions.

All Light Emitting Diodes (LEDs) used in this product are Class 1 LEDs as per IEC 60825-1.

ENVIRONMENTAL CONDITIONS

This instrument is intended for indoor use in an installation category II, pollution degree 2 environment. It is designed to operate at a maximum relative humidity of 95% and at altitudes of up to 2000 meters. Refer to the specifications tables for the ac mains voltage requirements and ambient operating temperature range.

BEFORE APPLYING POWER

Verify that the product is set to match the available line voltage, the correct fuse is installed, and all safety precautions are taken. Note the instrument’s external markings described under Safety Symbols.

GROUND THE INSTRUMENT

To minimize shock hazard, the instrument chassis and cover must be connected to an electrical protective earth ground. The instrument must be connected to the ac power mains through a grounded power cable, with the ground wire firmly connected to an electrical ground (safety ground) at the power outlet. Any interruption of the protective (grounding) conductor or disconnection of the protective earth terminal will cause a potential shock hazard that could result in personal injury.

FUSES

Only fuses with the required rated current, voltage, and specified type (normal blow, time delay, etc.) should be used. Do not use repaired fuses or short-circuited fuse holders. To do so could cause a shock or fire hazard.

DO NOT OPERATE IN AN EXPLOSIVE ATMOSPHERE

Do not operate the instrument in the presence of flammable gases or fumes.

DO NOT REMOVE THE INSTRUMENT COVER

Operating personnel must not remove instrument covers. Component replacement and internal adjustments must be made only by qualified service personnel.

Instruments that appear damaged or defective should be made inoperative and secured against unintended operation until they can be repaired by qualified service personnel.

WARNING The WARNING sign denotes a hazard. It calls attention to a procedure,

practice, or the like, which, if not correctly performed or adhered to, could result in personal injury. Do not proceed beyond a WARNING sign until the indicated conditions are fully understood and met.

Caution The CAUTION sign denotes a hazard. It calls attention to an operating

procedure, or the like, which, if not correctly performed or adhered to, could result in damage to or destruction of part or all of the product. Do not proceed beyond a CAUTION sign until the indicated conditions are fully understood and met.

Safety Symbols

Warning, risk of electric shock

Caution, refer to accompanying documents

Alternating current

Both direct and alternating current

Earth (ground) terminal

Protective earth (ground) terminal

Frame or chassis terminal

Terminal is at earth potential.

Standby (supply). Units with this symbol are not completely disconnected from ac mains when

this switch is off

Accessories

The accessories listed in the following table are supplied with the Agilent 35670A.

Supplied Accessories Part Number

Line Power Cable See page 2-4

Standard Data Format Utilities HP 5061-8042

Agilent 35670A Operator’s Guide Agilent 35670-90053

Agilent 35670A Quick Start Agilent 35670-90056

Agilent 35670A Installation and Verification Guide Agilent 35670-90054

Agilent 35670A GPIB Command Reference Agilent 35670-90057

GPIB Programmer’s Guide Agilent 5960-5708

Agilent 35670A GPIB Commands: Quick Reference Agilent 35670-90048

The accessories listed in the following table are available for the Agilent 35670A.

Available Accessories Part Number

DC Power Cable, 3 meter HP 35250A

DC Power Cable with Cigarette Lighter Adapter HP 35251A

Box of ten 3.5-inch double-sided, double-density disks HP 92192A

Using Instrument BASIC with the Agilent 35670A Agilent 35670-90049

Instrument BASIC User’s Handbook HP E2083-90000

HP Thinkjet Printer HP 2225A

HP Quietjet Printer HP 2227A

HP Jet Paper, 2500 sheets HP 92261N

GPIB Cable, 1 meter HP 10833A

GPIB Cable, 2 meter HP 10833B

GPIB Cable, 4 meter HP 10833C

GPIB Cable, 0.5 meter HP 10833D

In This Book

This guide provides instructions for installing, verifying performance, and repairing the Agilent 35670A Dynamic Signal Analyzer.

Chapter 1, ‘’Specifications,’’ lists the specifications for the Agilent 35670A and the specifications for the required test equipment.

Chapter 2, ‘’Preparing the Analyzer for Use,’’ provides step-by-step instructions for getting the analyzer ready to use and instructions on cleaning the screen, storing, and transporting.

Chapter 3, ‘’Verifying Specifications,’’ provides step-by-step instructions for installing and running the semiautomated performance test software. This chapter also provides illustrations that show the equipment set up for each test and a copy of the test records.

Chapter 4, ‘’Troubleshooting the Analyzer,’’ provides step-by-step instructions for isolating most failures to the faulty assembly.

Chapter 5, ‘’Adjusting the Analyzer,’’ provides step-by-step instructions for adjusting the analyzer.

Chapter 6, ‘’Replacing Assemblies,’’ provides step-by-step instructions to follow before and after replacing an assembly. This chapter also provides step-by-step instructions for disassembling the analyzer.

Chapter 7, ‘’Replaceable Parts,’’ provides ordering information and lists the replaceable parts.

Chapter 8, ‘’Circuit Descriptions,’’ provides the overall instrument description and individual assembly descriptions.

Chapter 9, ‘’Voltages and Signals,’’ shows where the signals and voltages are used in the analyzer and describes each signal.

Chapter 10, ‘’Internal Test Descriptions,’’ describes the power-on test, calibration routine, fault log messages, and self tests.

Chapter 11, ‘’Backdating,’’ provides information necessary to modify this manual for instruments that differ from those currently being produced.

Chapter 12, ‘’Quick Reference,’’ shows assembly locations, cable connections, and all the block diagrams.

Table of Contents

1 Specifications

Frequency 1-3

Single Channel Amplitude 1-4

FFT Dynamic Range 1-5

Input Noise 1-6

Window Parameters 1-6

Single Channel Phase 1-6

Cross Channel Amplitude 1-7

Cross Channel Phase 1-7

Input 1-8

Time Domain 1-9

Trigger 1-9

Tachometer 1-10

Source Output 1-11

Digital Interfaces 1-12

General Specifications 1-13

Order Tracking — Option 1D0 1-14

Swept Sine Measurements —Option 1D2 1-15

Arbitrary Waveform Source—Option 1D4 1-15

Real Time Octave Analysis — Option 1D1 1-16

Recommended Test Equipment 1-17

2 Preparing the Analyzer for Use

To do the incoming inspection 2-5

To install the analyzer 2-7

To connect the analyzer to a dc power source 2-8

To change the fuses 2-10

To connect the analyzer to a serial device 2-11

To connect the analyzer to a parallel device 2-11

To connect the analyzer to an GPIB device 2-12

To connect the analyzer to an external monitor 2-13

To connect the optional keyboard 2-14

To connect the microphone adapter 2-16

To clean the screen 2-17

To store the analyzer 2-17

To transport the analyzer 2-18

If the analyzer will not power up 2-19

If the analyzer operates intermittently on dc power 2-20

3 Verifying Specifications

To load the program 3-7

To run the program in semiautomated mode 3-8

To run the program without a printer 3-10

To run the program in manual mode 3-12

To set up the self test 3-13

To set up the dc offset test 3-14

To set up the noise test 3-15

To set up the spurious signals test 3-16

To set up the amplitude accuracy test 3-17

To set up the flatness test 3-18

To set up the amplitude linearity test 3-19

To set up the A-weight filter test 3-20

To set up the channel match test 3-21

To set up the frequency accuracy test 3-22

To set up the anti-alias filter test 3-23

To set up the input coupling test 3-24

To set up the harmonic distortion test 3-25

To set up the intermodulation distortion test 3-28

To set up the cross talk test 3-30

To set up the single channel phase accuracy test 3-34

To set up the external trigger test 3-35

To set up the tach function test 3-37

To set up the input resistance test 3-39

To set up the ICP supply test 3-41

To set up the source amplitude accuracy test 3-45

To set up the source output resistance test 3-46

To set up the source dc offset test 3-48

To set up the source flatness test 3-49

To set up the source distortion test 3-50

Measurement Uncertainty 3-56

Performance Test Record - Two Channel 1 of 14

Performance Test Record - Four Channel 1 of 20

Operation Verification Test Record - Two Channel 1 of 10

Operation Verification Test Record - Four Channel 1 of 15

4 Troubleshooting the Analyzer

How to troubleshoot the analyzer 4-4

To perform initial verification 4-5

To troubleshoot the power supply 4-11

To troubleshoot power-up failures 4-15

To troubleshoot CPU, memory, and buses failures 4-18

To troubleshoot display failures 4-22

To troubleshoot IIC bus failures 4-25

To troubleshoot fast bus failures 4-29

To perform self tests 4-31

To troubleshoot self-test lockup failures 4-37

To troubleshoot intermittent failures 4-40

To troubleshoot performance test failures 4-42

To troubleshoot source and calibrator failures 4-45

To troubleshoot input and ADC failures 4-51

To troubleshoot input failures on four channel analyzers 4-54

To troubleshoot distortion failures 4-56

To troubleshoot disk drive failures 4-57

To troubleshoot auto-range failures 4-59

To troubleshoot DIN connector failures 4-61

To troubleshoot trigger failures 4-62

To troubleshoot memory battery failures 4-67

To troubleshoot microphone power and adapter failures 4-69

To troubleshoot tachometer failures 4-70

5 Adjusting the Analyzer

To adjust the frequency reference 5-5

To adjust the source 5-6

To adjust the ADC gain, offset and reference 5-7

To adjust the input dc offset 5-10

To adjust common mode rejection 5-13

To adjust filter flatness 5-17

To adjust the display voltage 5-21

6 Replacing Assemblies

What to do before replacing the CPU assembly 6-3

What to do after replacing an assembly 6-4

To remove cover 6-6

To remove rear panel 6-7

To remove front panel 6-8

To remove disk drive 6-10

To remove CPU 6-11

To remove NVRAM 6-12

To remove memory 6-13

To remove power supply 6-14

To remove motherboard 6-16

To remove dc-dc converter 6-18

7 Replaceable Parts

Ordering Information 7-2

Assemblies 7-4

Cables 7-6

Instrument Covers and Handles 7-7

Assembly Covers and Brackets 7-8

Front Panel Parts 7-9

Rear Panel Parts 7-10

Chassis Parts 7-11

Screws, Washers, and Nuts 7-12

Miscellaneous Parts 7-12

Option UK4 Parts 7-13

8 Circuit Descriptions

Overall Instrument Description 8-2

A1 Input 8-6

A2 Input 8-12

A5 Analog 8-18

A6 Digital 8-22

A7 CPU 8-25

A8 Memory 8-30

A9 NVRAM 8-32

A10 Rear Panel 8-33

A11 Keyboard Controller 8-35

A12 BNC 8-36

A13 Primary Keypad 8-37

A14 Secondary Keypad 8-37

A15 Primary Keypad 8-37

A22 BNC 8-37

A90 Fan 8-38

A98 Power Supply 8-38

A99 Motherboard 8-39

A100 Disk Drive 8-39

A101 Display 8-39

A102 DC-DC Converter 8-39

Option UK4 Microphone Adapter and Power Supply 8-40

9 Voltages and Signals

Assembly Locations and Connections 9-3

Power Supply Voltage Distribution 9-6

A1 Input 9-7

A2 Input 9-7

A8 Memory 9-8

A9 NVRAM 9-12

A10 Rear Panel 9-14

A11 Keyboard Controller 9-18

A12 BNC 9-20

A13 Primary Keypad 9-21

A14 Secondary Keypad 9-23

A22 BNC 9-24

A99 Motherboard 9-25

A100 Disk Drive 9-34

A101 Display 9-36

A102 DC-DC Converter 9-37

10 Internal Test Descriptions

Power-on Test Description 10-2

Calibration Routine Description 10-5

Fault Log Messages 10-9

Self-Test Descriptions 10-10

11 Backdating

12 Quick Reference

Index

Guide to Agilent 35670A Documentation

Need Assistance?

Specifications

1-1

Specifications

This chapter contains the specifications for the Agilent 35670A Dynamic Signal Analyzer and the critical specifications for the equipment required to test the Agilent 35670A.

Instrument specifications apply after 15 minutes warm-up and within 2 hours of the last self-calibration. When the internal cooling fan has been turned OFF, specifications apply within 5 minutes of the last self-calibration. All specifications are with 400 line frequency resolution unless stated otherwise. Four channel instruments are unspecified in the one channel mode where alias protection filters are not connected.

Abbreviations

dBVrms = dB relative to 1 Volt rms.

dBfs = dB relative to full scale amplitude range. Full scale is approximately 2 dB below ADC

overload.

FS or fs Full scale; synonymous with input range.

Real Time or Online = Refer to the collecting and displaying of information with no dropouts

or missing information.

Rload = Load resistance connected to the analyzer’s source.

Typical = Typical, non-warranted, performance specification included to provide general

product information.

Vpk = Peak of the ac voltage.

1-2

Agilent 35670A Specifications

Frequency

Maximum range

1 channel mode 2 channel mode 4 channel mode (option AY6 only)

Spans

1 channel mode 2 channel mode 4 channel mode (option AY6 only)

Minimum resolution

1 channel mode 2 channel mode 4 channel mode (option AY6 only)

Maximum real-time bandwidth (FFT span for continuous data acquistion) (preset, fast averaging)

1 channel mode 2 channel mode 4 channel mode (option AY6 only)

Measurement rate (typical) (preset, fast averaging)

1 channel mode

2 channel mode 4 channel mode (option AY6 only)

Display update rate (typical) (preset, fast average off)

102.4 kHz, 51.2 kHz (option AY6†)

51.2 kHz

25.6 kHz

195.3 mHz to 102.4 kHz

97.7 mHz to 51.2 kHz

48.8 mHz to 25.6 kHz

122 mHz (1600 line display) 61 mHz (1600 line display) 61 mHz (800 line display)

25.6 kHz

12.8 kHz

6.4 kHz

≥70 averages/second (≥170 with 100 line display) ≥33 averages/second ≥15 averages/second

5 updates/second 9 updates/second (single channel, single display, undisplayed traces set with static data: e.g., data register)

Accuracy

† Option AY6 single channel maximum range extends to 102.4 kHz without anti-alias filter protection.

±30 ppm (±0.003%)

1-3

Specifications Agilent 35670A Single Channel Amplitude

Single Channel Amplitude

Absolute amplitude accuracy (FFT) (A combination of full scale accuracy, full scale flatness, and amplitude linearity.)

FFT full scale accuracy at 1 kHz (0 dBfs)

FFT full scale flatness (0 dBfs) relative to 1 kHz

FFT amplitude linearity at 1 kHz Measured on +27 dBVrms range with time average, 0 to −80 dBfs.

Amplitude resolution (16 bits less 2 dB over-range) with averaging

Residual dc response FFT mode frequency display (excludes A-weight filter)

±2.92% (0.25 dB) of reading ±0.025% of full scale

±0.15 dB (1.74%)

±0.2 dB (2.33%)

±0.58% (0.05 dB) of reading ±0.025% of full scale

0.0019% of full scale (typical)

<−30 dBfs or -66dBVdc (0.5 mVdc) (whichever is greater)

1-4

Agilent 35670A Specifications

FFT Dynamic Range

Spurious free dynamic range (Includes spurs, harmonic distortion, intermodulation distortion, alias products) Excludes alias responses at extremes of span.

Source impedance = 50 Ω

FFT noise floor (typical) Flat top window, 64 RMS averages

<−80 dBfs (90 dB typical)

Harmonic distortion Single tone (in band), ≤0 dBfs

Post-filter harmonic distortion (alias responses) of a single tone ≤102.4 kHz, ≤0

dBfs

Intermodulation distortion Two tones (in-band), each ≤−6.02 dBfs

Spurious and residual responses Source impedance = 50 Ω

Frequency alias responses Single tone (out of displayed range),

≤0 dBfs, ≤1 MHz (≤200 kHz with ICP on)

2.5% to 97.5% of the frequency span Lower and upper 2.5% of frequency span

<−80 dBfs

<−80 dBfs <−65 dBfs

1-5

Specifications Agilent 35670A Input Noise

Input Noise

Input noise level Flat top window, −51 dBVrms range, source impedance = 50 Ω, 32 rms averages

Above 1280 Hz 160 Hz to 1.28 kHz (6.4 kHz span)

Note: To calculate noise as dB below full scale:

Noise [dBfs] = Noise [dBVrms/ See ‘’Window Parameters,’’ below, for noise equivalent bandwidths (NEBW).

] + 10LOG(NEBW) – Range [dBVrms].

<–140 dBVrms/√—Hz <–130 dBVrms/√—Hz<%0 >

Window Parameters

Uniform Hann Flat Top

−3 dB bandwidth †

Noise equivalent bandwidth †

Attenuation at ± 1/2 bin Shape factor (−60 dB BW/−3dBBW)

† For 800 line displays. With 400, 200, or 100 line displays, multiply bandwidths by 2, 4, and 8, respectively. With 1600 line displays (only available in 1 or 2 channel mode), divide bandwidths by 2.

0.125% of span

4.0 dB 716

0.185% of span

0.1875% of span

1.5 dB

9.1

0.450% of span

0.4775% of span

0.01 dB

2.6

Single Channel Phase

Phase accuracy relative to external trigger 16 RMS averages, center of bin, dc coupled,

0 dBfs to −50 dBfs, 0 Hz < freq ≤ 10.24 kHz only

For Hann and flat top windows, phase is referenced to a cosine wave at the center of the time record. For the uniform, force, and exponential windows, phase is referenced to a cosine wave at the beginning of the time record.

1-6

±4.0 degree

Agilent 35670A Specifications

Cross Channel Amplitude

FFT cross channel gain accuracy Frequency response mode, same amplitude range

(AC coupled, Peroidic Chirp, Uniform Window, > =4Hz)

At full scale: Tested with 10 rms averages on the −11 to +27 dBvrms ranges, and 100 rms

averages on the −51 dBVrms range

At −20 dBfs: Tested with 200 rms averages on the −11 to +27 dBVrms ranges, and 2000 rms averages on the −51 dBVrms range

Cross Channel Phase

Cross channel phase accuracy (same conditions as cross-channel amplitude >=12Hz)

±0.04 dB (0.46%)

±0.08 dB (0.92%)

±0.5 degree

1-7

Specifications Agilent 35670A Input

Input

Input ranges (full scale) (auto-range capability)

Maximum input levels 42 Vpk

Input impedance

Low side to chassis impedance

Floating mode Grounded mode

AC coupling rolloff <3 dB rolloff at 1 Hz

Common mode rejection ratio Single tone at or below 1 kHz

–51 dBVrms to –11 dBVrms ranges –9 dBVrms to +9 dBVrms ranges +11 dBVrms to +27 dBVrms ranges

Note: CM dBfs = CM signal input [dBVrms] − CMRR [dB] − range [dBVrms]

Common mode range (floating mode)

Amplitude over-range detection +3 dB typical

ICP signal conditioning

+27 dBVrms (31.7 Vpk) to −51 dBVrms (3.99 mVpk) in 2 dB steps

1MΩ ±10%, 90 pF nominal

1MΩ ±30%, <0.010 µF (typical) ≤100 Ω

>75 dB typical >60 dB typical >40 dB typical

±4 Vpk

Current source Open circuit voltage

A-weight filter Conforms to ANSI Standard S1.4-1983; and to IEC 651-1979; 10 Hz to 25.6 kHz

Crosstalk Between input channels, and source-to-input

(receiving channel source impedance = 50 Ω)

4.25 ±1.5 mA +26 to +32 Vdc

Type 0 Tolerance

<–135 dB below signal or <–80 dBfs of receiving channel, whichever response is greater in amplitude

1-8

Agilent 35670A Specifications

Time Domain

Specifications apply in histogram/time mode, unfiltered time display

DC amplitude accuracy

Rise time of −1 V to 0 V test pulse

Settling time of −1 V to 0 V test pulse

Pulse aberrations (peak overshoot) of −1 V to 0 V test pulse

Peak aberration relative to the mode-to-mode difference (most common values)

Sampling period

1 channel mode 2 channel mode 4 channel mode (option AY6 only)

±5.0%fs

<11.4 ms

<16 ms to 1%

<3 %

3.815 ms (1/262144 Hz) to2sin2× steps

7.629 ms (1/131072 Hz) to4sin2× steps

15.26 ms (1/65536 Hz) to8sin2× steps

Trigger

Trigger modes Internal trigger

External trigger Source trigger GPIB trigger

Maximum trigger delay

Post trigger Pre trigger No two channels can be further than ±7168 samples from each other.

External trigger maximum input

External trigger range

Low range High range

External trigger resolution

Low range High range

8191 seconds 8191 sample periods

±42 Vpk

−2Vto+2V

−10 V to +10 V

15.7 mV 78 mV

1-9

Specifications Agilent 35670A Tachometer

Tachometer

Pulses per revolution 0.5 to 2048

RPM accuracy

Tachometer level range

Low range High range

Tachometer level resolution

Low range High range

Tachometer level accuracy (as a % of tachometer range setting)

Maximum tachometer input level

Minimum tachometer pulse width 600 ns

Maximum tachometer pulse rate 400 kHz

±100 ppm (0.01%) (typical)

–4Vto+4V –20 V to +20 V

100 mV 500 mV

±10% of range

±42 Vpk

1-10

Agilent 35670A Specifications

Source Output

Source types Sine, random noise, chirp, pink noise, burst

random, burst chirp

Amplitude range

AC amplitude resolution

Voltage ≥ 0.2 Vrms Voltage < 0.2 Vrms

DC offset accuracy

Pink noise adder Add 600 mV typical when using pink noise

Output impedance

Maximum loading

Current Capacitance

Sine amplitude accuracy at 1 kHz

Rload >250

0.1 Vpk to 5 Vpk

Sine flatness (relative to 1 kHz)

0.1 V to 5 V peak, 0 Hz to 102.4 kHz

Harmonic and sub-harmonic distortion and spurious signals (in band)

0.1 Vpk to 5 Vpk sine wave

Ω

ac:

±5 V peak † ±10V†

dc: † Vac

2.5 mVpk

0.25 mVpk

+ |Vdc| ≤10 V

±15 mV±3% of ( |Vdc| +Vac

Ω

±20 mA peak

0.01 mF

±4% (0.34 dB) of setting

±1dB

) settings

Fundamental <30 kHz Fundamental ≥30 kHz

<−60 dBc <−40 dBc

1-11

Specifications Agilent 35670A Digital Interfaces

Digital Interfaces

External keyboard Compatible with PC-style 101-key keyboard

model number HP C1405A (#ABA) (DIN connector) and HP keyboard cable part number 5081-2249.

GPIB Conforms to the following standards: IEEE

488.1 (SH1, AH1, T6, TEO, L4, LE0, RS1, RL1, PP0, DC1, DT1, C1, C2, C3, C12, E2) IEEE 488.2-1987 Complies with SCPI 1992 Factory set address: 11

Data transfer rate (REAL 64 Format)

Serial port (printing, plotting) 300 baud to 9600 baud

Parallel port (printing, plotting)

<45 ms for a 401 point trace

1-12

Agilent 35670A Specifications

General Specifications

Safety Standards CSA Certified for Electronic Test and

Measurement Equipment per CSA C22.2, No. 231

This product is designed for compliance to: UL1244, Fourth Edition IEC 348, Second Edition, 1978

EMI/RFI Standards CISPR 11

Acoustics LpA <55 dB (cooling fan at high speed

setting)

<45 dB (auto speed setting at 25° C)

Fan speed setting of high, automatic, and off are available. The fan off setting can be enabled for a short period of time, except at higher ambient temperatures where the fan will stay on.

Environmental operating restrictions Operating:

disk in drive

Ambient temperature 4° to 45° C 0° to 55° C –40° to 70° C

Relative humidity (non-condensing) minimum maximum

Vibration (5 - 500 Hz) 0.6 Grms 2.1 Grms 3.41 Grms

Shock 5 G

Maximum altitude 4600 meters (15,000 feet)

AC power 90 Vrms to 264 Vrms (47 to 440 Hz)

DC power 12 Vdc to 28 Vdc nominal

DC current at 12 V (typical) 10 A (standard)

Warm-up time 15 minutes

Weight 15 kg (33 lb) net

20% 80% at 32° C

(10 ms 1/2 sine)5G(10 ms 1/2 sine)

350 VA maximum

200 VA maximum

12 A (4 channel, option AY6)

29 kg (64 lb) shipping

Operating: no disk in drive

15% 95% at 40° C

Storage and transport

5% 95% at 50° C

40 G (3 ms 1/2 sine)

Dimensions (Excluding bail handle and impact cover)

IEC 801-3 (Radiated Immunity) Performance degradation may occur at Severity Level 2.

Height: 190 mm (7.5 in) Width: 340 mm (13.4 in) Depth: 465 mm (18.3 in)

1-13

Specifications Agilent 35670A Order Tracking — Option 1D0

Order Tracking — Option 1D0

Max Order Max RPM

Real time (online) 1 channel mode 2 channel mode 4 channel mode

Capture playback † 1 channel mode 2 channel mode 4 channel mode

Specified for 5 ≤ RPM ≤ 60,000 (online), 5 ≤ RPM ≤ 491,519 (capture playback); and

number of orders ≤ 200

† Signals are captured online and then postprocessed in capture playback mode.

Delta order 1/128 to 1/1

Resolution (maximum order)/(delta order)

Maximum RPM ramp rate 1000 to 10,000 RPM run up maximum order = 10 delta order = 0.1 RPM step = 30 (1 channel)

= 60 (2 channel) = 120 (4 channel)

≤

25,600 Hz 12,800 Hz 6,400 Hz

102,400 Hz 51,200 Hz 25,600 Hz

≤200

750 RPM/second (typical for real time)

Order track amplitude accuracy

1-14

±1 dB (typical)

Agilent 35670A Specifications

Swept Sine Measurements —Option 1D2

Dynamic range Default span: 51.2 Hz to 51.2 kHz Fast average ON, 101 point log sweep Tested with 11 dBVrms source level at 100 ms integration (approximately 60 second sweep)

130 dB typical

Arbitrary Waveform Source—Option 1D4

Amplitude Range Arb: ±5 Vpk †

dc: ±10 V † †V

+|Vdc| ≤10 V

Record Length Depends on measurement resolution (100, 200, 400, 800, and 1600 lines)

Point spacing Matches the measurement sample rate.

DAC Resolution

0.2828 Vpk to 5 Vpk <0.2828 Vpk

# of points = 2.56 x lines of resolution, or # of complex points = 1.28 x lines of resolution

2.5 mV

0.25 mV

1-15

Specifications Agilent 35670A Real Time Octave Analysis — Option 1D1

Real Time Octave Analysis — Option 1D1

Standards Conforms to ANSI Standard S1.11 - 1986,

Order 3, Type 1-D, Extended and Optional Frequency Ranges

Conforms to IEC 651-1979 Type 0 Impulse, and ANSI S1.4

Frequency ranges (at centers)

Online (real time)

1/1 octave 1/3 octave 1/12 octave

1 channel

0.063 Hz to 16 kHz

0.08 Hz to 40 kHz

0.0997 Hz to 12.338 kHz

2 channel

0.063 Hz to 8 kHz

0.08 Hz to 20 kHz

0.0997 Hz to 6.169 kHz

4 channel

0.063 Hz to 4 kHz

0.08 Hz to 10 kHz

0.0997 Hz to 3.084 kHz

Capture playback

1/1 octave 1/3 octave 1/12 octave

1 channel

0.063 Hz to 16 kHz

0.08 Hz to 31.5 kHz

0.0997 Hz to 49.35 kHz

2 channel

0.063 Hz to 16 kHz

0.08 Hz to 31.5 kHz

0.0997 Hz to 49.35 kHz

4 channel

0.063 Hz to 16 kHz

0.08 Hz to 31.5 kHz

0.0997 Hz to 49.35 kHz

1 to 12 octaves can be measured and displayed.

1/1, 1/3, and 1/12 octave true center frequencies related by the formula:

()

Where 1000 Hz is the reference for 1/1, 1/3 octave, and 1000 x2

; n 1, 3 or 12;

(1/24)

Hz is the reference for

1/12 octave. The marker returns the ANSI standard preferred frequencies.

Accuracy

±0.2 dB

1 second stable average single tone at band center

Readings are taken from the linear total power spectrum bin. It is derived from sum of each filter.

1/3 octave dynamic range 2 second stable average, limited by input noise level

1-16

>80 dB (typical) per ANSI S1.11 - 1986

Agilent 35670A Specifications

Recommended Test Equipment

The following table lists the recommended equipment needed to test the performance of the Agilent 35670A Dynamic Signal Analyzer. The table on page 1-20 lists additional equipment needed to adjust and troubleshoot the analyzer. Other equipment may be substituted for the recommended model if it meets or exceeds the listed critical specifications. When substitutions are made, you may have to modify the procedures to accommodate the different operating characteristics.

Recommended Test Equipment

Instrument Critical Specifications Recommended Model

AC Calibrator 10 Hz to 102.4 kHz; 1 mV to 10 V

Amplitude Amplitude Accuracy: ±0.1% phase locking

capability

Frequency Synthesizer

Low Distortion Oscillator

Digital Multimeter

Frequency Range: 10 Hz to 1 MHz Frequency Accuracy: ≤5 ppm

Amplitude Accuracy:

0.2 dB from 1 Hz to 100 kHz

1 dB from 100 kHz to 1 MHz Harmonic Distortion: ≤–70 dBc Spurious: ≤–70 dBc

<±1 deg phase shift between output and sync

Frequency Range: 10 Hz to 100 kHz Harmonic Distortion: ≤–93 dB, 10 Hz to

20 kHz

5 1/2 digit True rms ac Voltage:

30 Hz to 100 kHz; 0.1 to 500 V; ±0.1%; ≥1MΩ input impedance dc Voltage:

1 V to 300 V; ±0.1%

Fluke 5700A † Alternate

Fluke 5200A †

Datron 4200, 4700, or 4708 ‡

HP 745A

HP 3326A Alternate

(2) HP 3325A/B Opt 001

HP 339A †† Alternate HP 3326A with notch filter ††

HP 3325A/B with notch

filter††

HP 3458A Alternate

HP 3456A , HP 3455A HP 3478A

Feedthrough Termination (2) (4 for option AY6)

† John Fluke Manufacturing Co., Inc., PO Box C9090, Everett, WA 98206 U.S.A. (206) 347-6100 ‡ Wavetek, 5808 Churchman Bypass, Indianapolis, IN 46203 U.S.A. †† This equipment is not required for Operation Verification. The parts and schematic for the notch

filter are shown on page 1-19.

‡‡ ITT Pomona Electronics, 1500 East Ninth Street, Pomona, CA 91769 U.S.A. (714) 469-2900

FAX (206) 629-3317

50 Ω: ±2% at dc

Pomona Elect Model 4119-50 ‡‡ Alternate

HP 11048C, HP 10100C

1-17

Specifications Agilent 35670A Recommended Test Equipment

Recommended Test Equipment (continued)

Instrument Critical Specifications Recommended Model

Cables BNC-to-Dual Banana

(6) BNC-to-BNC 30 cm BNC-to-BNC 122 cm

Adapters BNC(m)-to-Dual Banana Plug

BNC(f)-to-Dual Banana Plug BNC(f)-to-BNC (f) (4) BNC Tee (m)(f)(f)

Resistor (2)†

† See the following for suggested assembly.

Value: 1 kΩ Accuracy: 1% Power: 0.25W

HP 11001-60001 HP 8120-1838 HP 8120-1840

HP 10110B HP 1251-2277 HP 1250-0080 HP 1250-0781

HP 0757-0280

Suggested Assembly for Series Resistor

The following is a suggested assembly for the 1 kΩ series resistor. Two 1 kΩ series resistors are required for the Intermodulation Distortion performance test.

• Cut resistor leads to 12 mm on each end.

• Solder one resistor lead to the center conductor of the BNC female connector.

•

Solder the conductor center pin to the other lead of the resistor.

•

Screw the sleeve and the BNC male connector into place. Tighten securely.

1-18

Agilent 35670A Specifications

Recommended Test Equipment

Schematic and Parts List for Notch Filter

The Harmonic Distortion performance test requires either an HP 339A or an HP 3326A or HP 3325A/B with notch filter. The following shows the schematic and parts list for the notch filter.

Reference Description Agilent Part

Number

C1-C4

R1-R2

R4-R6

0.025 µF ±2.5%, 100 V polypropelene-metalized

249 Ω±1% metal film, 0.125 W

118 Ω±1% metal film, 0.125 W

20 Ω trimmer, 1 turn

HP 0160-6809

HP 0698-4421

HP 0698-4407

HP 2100-3409

1-19

Specifications Agilent 35670A Recommended Test Equipment

Additional Recommended Test Equipment

Instrument Critical Specifications Recommended Model

Frequency Counter Frequency Range: 0 Hz to 100 MHz

Frequency Accuracy: 7.5 ppm or better

at 20 MHz

Oscilloscope Bandwidth: >50 MHz

Two Channel; External Trigger; 1 MΩ Input

Oscilloscope Probe

Impedance: ≥1MΩ

HP 5350B Alternate

HP 5351B, HP 5335A

HP 54111D Alternate

HP 1980B, HP 1740

HP 10431A

Division Ratio: 10:1 Maximum Voltage: ≥20 Vdc

Oscilloscope Probe

Impedance: ≥ 1MΩ

HP 10438A

Division Ratio: 1:1

Spectrum Analyzer Frequency Range: 10 Hz to 100 kHz

Dynamic Range: ≥70 dB

HP 3562A Alternate

HP 3561A, HP

3585A/B

Logic Probe TTL HP 545A

Alternate

HP 5006A,

HP5005A/B

Patch Cord Minigrabber test clips Pomona 3781-8-7

Cable BNC(m)-to-SMB(f) HP 03585-61616

Adapter SMB(m)-to-SMB(m) HP 1250-0669

1-20

Preparing the Analyzer for Use

2-1

Preparing the Analyzer for Use

This chapter contains instructions for inspecting and installing the Agilent 35670A Dynamic Signal Analyzer. This chapter also includes instructions for cleaning the screen, transporting and storing the analyzer.

DC Power Requirements

The analyzer can operate from a dc power source supplying a true range of 10.8 to 30.8 Vdc. With all options installed, power consumption is less than 200 VA. The following table shows typical current requirements at different operating voltages for the standard two-channel analyzer and for the optional four-channel analyzer.

Operating Typical Current

Voltage Standard 2 channel

Agilent 35670A

12 Vdc 8.0 amps 11.0 amps

24 Vdc 4.0 amps 5.5 amps

Optional 4 channel Agilent 35670A

AC Power Requirements

The analyzer can operate from a 47 to 440 Hz, single-phase, ac power source supplying 90 to 264 Vrms. With all options installed, power consumption is less than 350 VA.

Warning Only a qualified service person, aware of the hazards involved, should measure

the line voltage.

2-2

Agilent 35670A Preparing the Analyzer for Use

DC Power Cable and Grounding Requirements

The negative side of the dc input connector is not connected to chassis ground. In dc mode operation, the chassis will float. The chassis ground lug on the rear panel and the negative side of the dc input connector should both be connected to a known reference potential.

Two dc power cables are available—the HP 35250A dc power cable and the HP 35251A dc power cable with cigarette lighter adapter. Both cables contain a 30 amp, 32 volt fuse (HP 2110-0920).

Warning The tip of the cigarette lighter adapter may get hot during use. After unpluging

the adapter, be careful of the heat from the adapter’s tip.

Caution Although shorter cables may reduce dc voltage loss, use the standard cables. The dc

inrush current may pit the connector contacts in shorter cables.

AC Power Cable and Grounding Requirements

On the GPIB connector, pin 12 and pins 18 through 24 are tied to chassis ground and the GPIB cable shield. The instrument frame, chassis, and covers are connected to chassis ground. The input BNCs are floating unless ground mode is selected.

The analyzer is equipped with a three-conductor power cord that grounds the analyzer when plugged into an appropriate receptacle. The type of power cable plug shipped with each analyzer depends on the country of destination. The following figure shows available power cables and plug configurations.

2-3

Preparing the Analyzer for Use Agilent 35670A

*The number shown for the plug is the industry identifier for the plug only, the number shown for the cable is an HP part number for a complete cable including the plug.

**UL listed for use in the United States of America.

Warning The power cable plug must be inserted into an outlet provided with a protective

earth terminal. Defeating the protection of the grounded analyzer cabinet can subject the operator to lethal voltages.

2-4

Agilent 35670A Preparing the Analyzer for Use

To do the incoming inspection

The Agilent 35670A Dynamic Signal Analyzer was carefully inspected both mechanically and electrically before shipment. It should be free of marks or scratches, and it should meet its published specifications upon receipt.

Inspect the analyzer for physical damage incurred in transit. If the analyzer

•

was damaged in transit, do the following:

Save all packing materials.

•

File a claim with the carrier.

•

Call your Agilent Technologies sales and service office.

•

Warning If the analyzer is mechanically damaged, the integrity of the protective earth

ground may be interrupted. Do not connect the analyzer to power if it is damaged.

• Check that the POWER SELECT switch on the analyzer’s rear panel is set to the AC position.

The switch is in the AC position when in the ‘’in’’ position.

2-5

Preparing the Analyzer for Use Agilent 35670A To do the incoming inspection

Check that the correct fuses are installed in the fuse holders.

•

An 8 amp, 250 volt, normal blow fuse is required for ac operation. A 30 amp, 32 volt, normal blow fuse is required for dc operation. Both fuses are installed at the factory. For instructions on removing the fuses or fuse part numbers, see ‘’To change the fuses.’’

Using the supplied power cord, connect the analyzer to an appropriate

•

receptacle.

The analyzer is shipped with a three-conductor power cord that grounds the analyzer when plugged into an appropriate receptacle. The type of power cable plug shipped with each analyzer depends on the country of destination.

Set the analyzer’s power switch to on.

• Press the switch located on the analyzer’s lower left-hand corner. The switch is in the

on ( l ) position when in the ‘’in’’ position. The analyzer requires about 20 seconds to

complete its power-on routine.

Test the electrical performance of the analyzer using the operation verification

•

or the performance tests in chapter 3, ‘’Verifying Specifications.’’

The operation verification tests verify the basic operating integrity of the analyzer; these tests take about The performance tests verify that the analyzer meets all the performance specifications; these tests take about

hours to complete and are a subset of the performance tests.

hours to complete.

2-6

Agilent 35670A Preparing the Analyzer for Use

To install the analyzer

The analyzer is shipped with rubber feet and bail handle in place, ready for use as a portable or bench analyzer.

Install the analyzer to allow free circulation of cooling air.

•

Cooling air enters the analyzer through the right side and exhausts through the left side and rear panel.

To install the analyzer in an equipment cabinet, follow the instructions shipped with

•

the rack mount kit.

Warning To prevent potential fire or shock hazard, do not expose the analyzer to rain or

other excessive moisture.

Protect the analyzer from moisture and temperatures or temperature changes that cause

•

condensation within the analyzer. The operating environment specifications for the analyzer are listed in chapter 1,

‘’Specifications.’’

Protect the analyzer’s disk drive from dirt and dust.

•

Remove the screw to the right of the disk drive and use it to attach the supplied disk drive cover. The disk drive cover is located inside the front-panel impact cover.

Caution Use of the equipment in an environment containing dirt, dust, or corrosive substances

will drastically reduce the life of the disk drive and the flexible disks. To minimize damage, use the disk drive cover and store the flexible disks in a dry, static-free environment.

2-7

Preparing the Analyzer for Use Agilent 35670A To connect the analyzer to a dc power source

To connect the analyzer to a dc power source

In applications requiring a portable dc power source, use a properly protected dc power system. The dc system should contain a deep cycle battery rather than a standard automobile battery. A standard automobile battery will fail prematurely if repeatedly discharged. Also, select a battery that provides the best compromise between operation time and portability.

Set the analyzer’s power switch to off (

•

Set the analyzer’s POWER SELECT switch to the DC position.

•

The switch is in the DC position when in the ‘’out’’ position.

Connect the dc power cable to the dc power source.

•

Using the dc power cable (HP 35250A), attach the black cable to the common terminal and the red cable to the positive terminal of the dc power source. Using the dc power cable with cigarette lighter adapter (HP 35251A), plug the cigarette lighter adapter into an automotive cigarette lighter receptacle.

Connect the analyzer’s ground terminal to the same reference potential as the

•

common terminal of the dc power source.

Using a wire, connect the analyzer’s GROUND terminal to the common terminal of the dc source. If you are using the dc power cable with cigarette lighter adapter, connect the GROUND terminal to the automobile chassis.

• Plug the dc power cable into the analyzer’s DC POWER receptacle. Make sure

to align the red dot on the plug with the red dot on the receptacle.

O ).

2-8

Agilent 35670A Preparing the Analyzer for Use

To connect the analyzer to a dc power source

Turn on the dc power source.

•

If the dc power source is supplied by an automobile, start the automobile. The automobile must be running to provide adequate dc power.

Warning The tip of the cigarette lighter adapter may get hot during use. After unpluging

the adapter, be careful of the heat from the adapter’s tip.

Set the analyzer’s power switch to on (

•

l ).

If the analyzer will not power up or operates intermittently on dc power, see ‘’If the analyzer will not power up’’ or ‘’If the analyzer operates intermittently on dc power’’ at the end of this chapter.

2-9

Preparing the Analyzer for Use Agilent 35670A To change the fuses

To change the fuses

Both fuses are installed at the factory.

Unplug the power cord from the analyzer.

•

Press in and turn the appropriate fuse holder cap counter-clockwise (use a

•

small screw driver for the ac fuse). Remove when the fuse cap is free from the housing.

Pull the fuse from the fuse holder cap.

•

To reinstall, select the proper fuse and place in the fuse holder cap.

•

DC Fuse AC Fuse

HP 2110-0920 30 A 32 V Normal Blow HP 2110-0342 8 A 250 V Normal Blow

Place the fuse holder cap in the housing. Press in and turn clockwise.

•

2-10

Agilent 35670A Preparing the Analyzer for Use

To connect the analyzer to a serial device

The Serial Port is a 9-pin, EIA-574 port that is only available using option 1C2, Instrument Basic. The total allowable transmission path length is 50 feet.

Connect the analyzer’s rear panel SERIAL PORT to a serial device using a 9-pin

•

female to 25-pin RS-232-C cable.

Part Number Cable Description

HP 24542G 9-pin female to 25-pin male RS-232

HP 24542H 9-pin female to 25-pin female RS-232

For additional information, see chapter 9 in the Agilent 35670A Service Guide.

To connect the analyzer to a parallel device

The Parallel Port is a 25-pin, Centronics port. The Parallel Port can interface with PCL printers or HP-GL plotters.

• Connect the analyzer’s rear panel PARALLEL PORT connector to a plotter or printer

using a Centronics interface cable.

Part Number Cable Description

HP 92284A 25-pin male to 36-pin male 2-meter Centronics

HP C2912B 25-pin male to 36-pin male 3-meter Centronics

For additional information, see chapter 9 in the Agilent 35670A Service Guide.

2-11

Preparing the Analyzer for Use Agilent 35670A To connect the analyzer to an GPIB device

To connect the analyzer to an GPIB device

The analyzer is compatible with the Agilent Technologies Interface Bus (GPIB). The GPIB is Agilent Technologies’s implementation of IEEE Standard 488.1. Total allowable transmission path length is 2 meters times the number of devices or 20 meters, whichever is less. Operating distances can be extended using an GPIB Extender.

GPIB peripherals include HP-GL plotters, PCL printers, and SS-80 external disks.

Connect the analyzer’s rear panel GPIB connector to an GPIB device using an

•

GPIB interface cable.

Caution The analyzer contains metric threaded GPIB cable mounting studs as opposed to

English threads. Use only metric threaded GPIB cable lockscrews to secure the cable to the analyzer. Metric threaded fasteners are black, while English threaded fasteners are silver.

For GPIB programming information, see the Agilent 35670A GPIB Programming Reference.

2-12

Agilent 35670A Preparing the Analyzer for Use

To connect the analyzer to an external monitor

The External Monitor connector is a 9-pin D female miniature connector that can interface with an external, multisync monitor. The monitor must be compatible with the 24.8 kHz line rate, 55 Hz frame rate, and TTL signals provided by the Agilent 35670A. A SONY CPD-1302 monitor and a NEC Multisync 3D monitor with EZPIXpc† driver has been checked and found compatible with the Agilent 35670A external monitor mode operation.

Set the analyzer’s power switch to on (

•

Set the monitor’s power switch to on and configure the input and timing mode

•

if necessary.

See the manual supplied with the monitor for information on configuring the monitor’s input and timing mode.

Connect the external monitor’s input cable to the analyzer’s rear panel EXT

•

MONITOR connector.

A cable with a 9-pin connector option or an adapter to a 9-pin connector is required to connect the monitor to the Agilent 35670A.

• Press the following keys to enable external mode: [

Disp Format ]

[

MORE ]

[

MORE ]

[

EXT MON ON OFF ]

l ).

Pin Number Signal Name Pin Number Signal Name

3 R 8 HSYNC

4 G 9 VSYNC

5 B 1, 2, 6 GND

† The EZPIXpc driver converts TTL video signals into RGB analog signals, drives 75 ohm coax cable, provides RGB composite sync or RGB sync on green, for monitors with RGB input capability. EZPIXpc, Covid, Inc., 1725 West 17th St, Tempe, Arizona 85281, 800-638-6104

2-13

Preparing the Analyzer for Use Agilent 35670A To connect the optional keyboard

To connect the optional keyboard

The analyzer may be connected to an optional external keyboard. The keyboard remains active even when the analyzer is not in alpha entry mode. This means that you can operate the analyzer using the external keyboard rather than the front panel. Pressing the appropriate keyboard key does the same thing as pressing a hardkey or a softkey on the analyzer’s front panel.

Set the power switch to off (

•

Caution Do not connect or disconnect the keyboard cable with the line power turned on ( l ).

Connecting or disconnecting the keyboard while power is applied may damage the keyboard or the analyzer.

Connect the round plug on the keyboard cable to the KEYBOARD connector

•

on the analyzer’s rear panel. Make sure to align the plug with the connector pins.

O ).

2-14

Agilent 35670A Preparing the Analyzer for Use

To connect the optional keyboard

Connect the other end of the keyboard cable to the keyboard.

•

Caution In addition to the U.S. English keyboard, the Agilent 35670A Dynamic Signal

Analyzer supports U.K. English, German, French, Italian, Spanish, and Swedish. Use only the Agilent Technologies approved keyboard for this product. Agilent Technologies does not warrant damage or performance loss caused by a non-approved keyboard. See the beginning of this guide for part numbers of approved Agilent Technologies keyboards.

To configure your analyzer for a keyboard other than U.S. English, press

•

[

System Utility][KEYBOARD SETUP

]. Then press the appropriate softkey to

select the language.

Configuring your analyzer to use a keyboard other than U.S. English only ensures that the analyzer recognizes the proper keys for that particular keyboard. Configuring your analyzer to use another keyboard does not localize the on-screen annotation or the analyzer’s online HELP facility.

2-15

Preparing the Analyzer for Use Agilent 35670A To connect the microphone adapter

To connect the microphone adapter

The Microphone Adapter and Power Supply (option UK4) simplifies microphone connections. The mic connector on the analyzer’s front panel provides 8 Vdc to power the adapter. The adapter’s internal power supply uses a step-up converter to provide 28 V and 200 V on the seven-pin input connectors. The 28 V pins power the microphone pre-amplifiers. The 200 V pins polarize the condenser microphone cartridges.

Flip the bail handle down to support the front of the analyzer.

•

Insert the threaded ends of the adapter’s two knurled knobs into the standoffs

•

on the bottom of the analyzer’s case, then tighten the knobs with your fingers.

Attach the adapter’s mic cable to mic connector on the analyzer’s front panel.

•

Connect the adapter’s BNCs to the corresponding BNCs on the analyzer’s

•

front panel.

Standard 2 channel Agilent 35670A Optional 4 channel Agilent 35670A

2-16

Agilent 35670A Preparing the Analyzer for Use

To clean the screen

The analyzer’s display is covered with a plastic diffuser screen (this is not removable by the operator). Under normal operating conditions, the only cleaning required will be an occasional dusting. However, if a foreign material adheres itself to the screen, do the following:

Set the power switch to off (

•

Remove the power cord.

•

Dampen a soft, lint-free cloth with a mild detergent mixed in water.

•

Carefully wipe the screen.

•

Caution Do not apply any water mixture directly to the screen or allow moisture to go behind

the front panel. Moisture behind the front panel will severely damage the instrument.

To prevent damage to the screen, do not use cleaning solutions other than the above.

O ).

To store the analyzer

• Store the analyzer in a clean, dry, and static free environment.

For other requirements, see environmental specifications in chapter 1, ‘’Specifications.’’

2-17

Preparing the Analyzer for Use Agilent 35670A To transport the analyzer

To transport the analyzer

Package the analyzer using the original factory packaging or packaging identical to the

•

factory packaging. Containers and materials identical to those used in factory packaging are available

through Agilent Technologies offices.

If returning the analyzer to Agilent Technologies for service, attach a tag describing

•

the following:

Type of service required

•

Return address

•

Model number

•

Full Serial number

•

In any correspondence, refer to the analyzer by model number and full serial

•

number

Mark the container FRAGILE to ensure careful handling.

•

If necessary to package the analyzer in a container other than original packaging,

•

observe the following (use of other packaging is not recommended):

Snap the impact cover in place to protect the front panel.

•

Wrap the analyzer in heavy paper or anti-static plastic.

•

• Use a double-wall carton made of at least 350-pound test material.

•

Cushion the analyzer to prevent damage.

Caution Do not use styrene pellets in any shape as packing material for the analyzer. The

pellets do not adequately cushion the analyzer and do not prevent the analyzer from shifting in the carton. In addition, the pellets create static electricity which can damage electronic components.

2-18

Agilent 35670A Preparing the Analyzer for Use

If the analyzer will not power up

Check that the power cord is connected to the Agilent 35670A and to a live power

source.

Check that the front-panel switch is on ( l ).

Check that the rear-panel AC/DC power select switch is properly set.

Check that the fuse is good.

See ‘’To change the fuses’’ on page 2-10.

Check that the analyzer’s air circulation is not blocked.

Cooling air enters the analyzer through the right side and exhausts through the left side and rear panel. If the analyzer’s air circulation is blocked, the analyzer powers down to prevent damage from excessive temperatures. The analyzer remains off until it cools down and its power switch is set to off (

Obtain Agilent service, if necessary. See ‘’Need Assistance?’’ at the end of this guide.

O ) then to on ( l ).

2-19

Preparing the Analyzer for Use Agilent 35670A If the analyzer operates intermittently on dc power

If the analyzer operates intermittently on dc power

The analyzer powers down when operating on dc power if no measurement has been made within 30 minutes.

Check that the dc power source can supply the required power.

The dc power source must have a true range of 10.8 to 30.8 Vdc. At the minimum voltage of 10.8 Vdc, the dc power source must be able to supply approximately

8.7 amps for a two-channel analyzer and 12.2 amps for a four-channel analyzer. The voltage loss through an automotive cigarette lighter system can cause the dc voltage to go below 10.8 Vdc.

Check that power transients are not causing the dc voltage to go below 10.8 Vdc.

The dc voltage provided by an automobile is susceptible to power transients. For example, power transients may occur when lights or fans turn on or off, when power door locks engage or disengage, and when windshield wipers operate. If the dc supply voltage falls below 10.8 V, the analyzer automatically turns off. However, the analyzer is not affected by power transients that occur within the range of 10.8 to 30.8 Vdc.

Check that the cable connections are not loose.

Obtain Agilent service, if necessary. See ‘’Need Assistance?’’ at the end of this guide.

2-20

Verifying Specifications

3-1

Verifying Specifications

This chapter tells you how to use the Agilent 35670A Semiautomated Performance

Test Disk

operation verification tests and performance tests.

After you review this chapter, follow the directions in ‘’To load the program’’ then continue with one of the following:

•

Caution Before applying line power to the analyzer or testing its electrical performance, see

chapter 2, ‘’Preparing the Analyzer for Use.’’

. The performance test disk contains a program that semiautomates the

‘’To run the program in semiautomated mode’’

‘’To run the program without a printer’’

‘’To run the program in manual mode’’

Overview

Semiautomated Performance Test Disk contains a program (ITM_35670A)

The and two procedure files (OP_VERIFY and PERFORMAN). ITM_35670A is the test manager program. OP_VERIFY is the operation verification procedure file and PERFORMAN is performance test procedure file. The procedure files contain an ordered list of tests, and each test contains one or more measurements. Since ITM_35670A reads the procedure files, the disk must remain in the disk drive during testing.

If you do not have a keyboard connected to the analyzer, use the numeric key pad and the alpha keys when the program prompts you to type in information. See the analyzer’s help text for a description of the alpha keys.

If a test fails, contact your local Agilent Technologies sales and service office or have a qualified service technician see chapter 4, ‘’Troubleshooting the Analyzer,’’ in the

Agilent 35670A Service Guide.

3-2

Agilent 35670A Verifying Specifications

Features of the Program

The program can automatically create a printout similar to the test records at the

•

back of this chapter.

The program can beep when equipment connections need to be changed.

•

The program can start the test sequence at any test in the operation verification or

•

performance test list.

The program can stop after each measurement or alternatively, only if a failure

•

occurs.

The program can be run in manual mode.

•

Test Duration

In semiautomated mode, the operation verification tests require approximately

hours and the performance tests require approximately

hours.

Calibration Cycle

To verify the Agilent 35670A Dynamic Signal Analyzer is meeting its published specifications, do the performance tests every 12 months.

Recommended Test Equipment

The equipment needed for operation verification and performance tests is listed on page 1-18. Other equipment may be substituted for the recommended model if it meets or exceeds the listed critical specifications.

Also, if you want the test record to be automatically printed, you need an GPIB printer. If you want the printer to automatically leave top and bottom margins on every page, enable perforation skip mode (see your printer’s manual for directions). If you do not have an GPIB printer you must record the results of each test in the test records. These test records may be reproduced without written permission of Agilent Technologies.

3-3

Verifying Specifications Agilent 35670A

Program Controlled Test Equipment

This program automatically controls the instruments listed in the following table using GPIB commands. If you use a test instrument other than those shown in the table, the program prompts you to set the instrument state during testing.

Test Equipment Program Controlled Model

AC Calibrator Fluke 5700A

Alternate

Fluke 5200A

Datron 4200, 4707, 4708

Frequency Synthesizer HP 3326A

Alternate

(2) HP 3325A/B

Digital Multimeter HP 3458A

Alternate

HP 3455A HP 3456A HP 3478A

Measurement Uncertainty

A table starting on page 3-56 lists the measurement uncertainty and ratio for each performance test using the recommended test equipment. Except for the External Trigger test, the ratios listed for the recommended test equipment meet or exceed the measurement uncertainty ratio required by

MIL-STD-45662A

. The table also provides a place to record the measurement

U.S.

uncertainty and ratio for each performance test using equipment other than the recommended test equipment. The table may be reproduced without written permission of Agilent Technologies.

Operation Verification and Performance Tests

The operation verification tests give a high confidence level (>90%) that the Agilent 35670A Dynamic Signal Analyzer is operating properly and within specifications. The operation verification tests are a subset of the performance tests. The operation verification tests should be used for incoming and after-repair inspections. The performance tests provide the highest level of confidence and are used to verify that the Agilent 35670A Dynamic Signal Analyzer conforms to its published specifications. Some repairs require a performance test to be done after the repair (see chapter 6, ‘’Replacing Assemblies’’ in the

Agilent 35670A Service Guide for this information). The

following table lists the operation verification and performance tests.

3-4

Agilent 35670A Verifying Specifications

Operation Verification Tests Performance Tests

Self Test Self Test

DC Offset DC Offset

Noise Noise

Spurious Signals Spurious Signals

Amplitude Accuracy Amplitude Accuracy

Flatness Flatness

Amplitude Linearity Amplitude Linearity

A-Weight Filter A-Weight Filter

Channel Match Channel Match

Frequency Accuracy Frequency Accuracy

Single Channel Phase Accuracy Anti-Alias Filter

Tach Function Input Coupling

ICP Supply Harmonic Distortion

Source Amplitude Accuracy Intermodulation Distortion

Source Flatness Cross Talk

Source Distortion Single Channel Phase Accuracy

External Trigger

Tach Function

Input Resistance

ICP Supply

Source Amplitude Accuracy

Source Output Resistance

Source DC Offset

Source Flatness

Source Distortion

3-5

Verifying Specifications Agilent 35670A

Specifications and Performance Tests

The following table lists specifications and the performance test or tests that verify each specification.

Specification Performance Test

Frequency

Accuracy Frequency Accuracy

Single Channel Amplitude

Residual dc response FFT full scale accuracy at 1 kHz FFT full scale flatness FFT amplitude linearity at 1 kHz

FFT Dynamic Range

Frequency alias responses Harmonic distortion Intermodulation distortion Spurious and residual responses

DC Offset Amplitude Accuracy Flatness Amplitude Linearity

Anti-Alias Filter Harmonic Distortion Intermodulation Distortion Spurious Signals

Input Noise Noise

Single Channel Phase Single Channel Phase Accuracy

Cross Channel Amplitude Channel Match

Cross Channel Phase Channel Match

Input

ac coupling rolloff Cross talk Input impedance ICP signal conditioning A-weight filter

Trigger

External trigger External Trigger

Tachometer

Tachometer level accuracy Tach Function

Source Output

Sine flatness Harmonic and sub-harmonic distortion Sine amplitude accuracy at 1 kHz Resistance dc offset accuracy

Input Coupling Cross Talk Input Resistance ICP Supply A-Weight Filter

Source Flatness Source Distortion Source Amplitude Accuracy Source Output Resistance Source DC Offset

3-6

Agilent 35670A Verifying Specifications

To load the program

For information about the program’s softkeys, see the menu descriptions starting on page 3-51.

Set the Agilent 35670A Dynamic Signal Analyzer’s power switch to off (

•

then connect the analyzer, test instruments, and printer using GPIB cables.

If you have the PC Style Keyboard, option 1CL, connect the keyboard to the

•

analyzer using the keyboard cable (see ‘’To connect the optional keyboard’’ in chapter 2).

Insert the Semiautomated Performance Test Disk into the analyzer’s disk drive,

•

then set the power switch to on (

After the analyzer finishes its power-up calibration routine, press the following

•

l ).

keys:

Local/GPIB ]

[

SYSTEM CONTROLLR ]

[

System Utility ]

[

MEMORY USAGE ]

[

REMOVE WATERFALL ]

[

CONFIRM REMOVE ]

[

RETURN ]

[

MORE ]

[

SERVICE TESTS ]

[

PERFRMANC TEST ]

• Now go to one of the following procedures to continue:

O ),

•

‘’To run the program in semiautomated mode’’

•

‘’To run the program without a printer’’

•

‘’To run the program in manual mode’’

3-7

Verifying Specifications Agilent 35670A To run the program in semiautomated mode

To run the program in semiautomated mode

You must have an GPIB printer connected to your system to run the program in semiautomated mode. If you do not have a printer, see ‘’To run the program without a printer’’ later in this chapter.

Press the following keys and when the program prompts you, type in the

•

information for the title page of the test record and press [

TITLE PAGE ]

[

TEST FACILITY ]

[

FACILITY ADDRESS ]

[

TESTED BY ]

[

REPORT NUMBER ]

[

CUSTOMER ]

[

MORE ]

[

TEMP ]

[

HUMIDITY ]

[

LINE FREQUENCY ]

[

RETURN ]

• Press the following keys and when the program prompts you, type in the

equipment configuration information:

EQUIP CONFIG ]

[

AC CALIBRATO ]

[

SYNTH. 1 ]

[

SYNTH. 2 ] (If needed)

[

LOW-D OSCILLATO ] (If needed)

[

MULTIMETER ]

[

RETURN ]

ENTER ]:

The GPIB address is 100 x (interface select code) + (primary address). The interface select code for the test equipment and printer is 7 (for example, if the primary address is 8, the GPIB address is 708).

When entering the calibration due date, only four characters are displayed on the screen. However, you can enter up to nine characters and they will be printed.

3-8

Agilent 35670A Verifying Specifications

To run the program in semiautomated mode

Press the following keys and type in the printer address when the program

•

prompts you:

TEST CONFIG ]

[

PRINTER ADDRESS ]

[

PROCEDURE ]

[

OP_VERIFY ]or[PERFORMAN ]

[

STOP AFTER ]

[

LIMIT FAILURE ]or[NONE ]

[

RETURN ]

Press the following keys to start the test:

•

START TESTING ]

[

START BEGINNING ]

When you select [

printed only after all tests are done. When you select [ [

ONE TEST ], the data is printed immediately after each measurement.

Follow the directions on the display.

•

START BEGINNING ], the data is written to a file on the disk and

START MIDDLE ]or

Warning During the test, the program prompts you to change the test equipment

connections. Always turn the ac calibrator output to OFF or STANDBY before changing test equipment connections. The ac calibrator can produce output voltages that could result in injury to personnel.

The directions on the display briefly tell you how to connect test equipment. For detailed illustrations of equipment setup, see the setup illustrations starting on page 3-13.

If you want to pause the program and return the Agilent 35670A Dynamic Signal Analyzer to front panel control, press [ [

BASIC ][DISPLAY SETUP ][LOWER ][RETURN ][CONTINUE ]. If you changed

any instrument setup states, press [

BASIC ]. To continue the program, press

RESTART TEST ] instead of [ CONTINUE ]to

ensure accurate measurement results.

3-9

Verifying Specifications Agilent 35670A To run the program without a printer

To run the program without a printer

Use this procedure if you do not have an GPIB printer connected to yout system.

Write in the information needed on the title page of the selected test record.

•

The test records are located near the back of this chapter and may be copied without written permission of Agilent Technologies.

Press the following keys and when the program prompts you, type in the model

•

number and GPIB address:

[

EQUIP CONFIG ]

[

AC CALIBRATO ]

[

SYNTH. 1 ]

[

SYNTH. 2 ] (If needed)

[

LOW-D OSCILLATO ] (If needed)

[

MULTIMETER ]

[

RETURN ]

The GPIB addresses equals 100

 (interface select code) + (primary address). The

interface select code for the test equipment is 7 (for example, if the primary address is 8, the GPIB address is 708).

• Press the following keys: [ TEST CONFIG ]

[

PROCEDURE ]

[

OP_VERIFY ]or[PERFORMAN ]

[

STOP AFTER ]

[

EACH MEASUREMENT ]

[

RETURN ]

• Press the following keys to start the test: [

START TESTING ]

[

START BEGINNING ]

3-10

Agilent 35670A Verifying Specifications

To run the program without a printer

Now follow the directions on the display and record every measurement result

•

in the selected test record.

Warning During the test, the program prompts you to change the test equipment

connections. Always turn the ac calibrator output to OFF or STANDBY before changing test equipment connections. The ac calibrator can produce output voltages that could result in injury to personnel.

The directions on the display briefly tell you how to connect test equipment. For detailed illustrations of equipment setup, see the setup illustrations starting on page 3-13.

If you want to pause the program and return the Agilent 35670A Dynamic Signal Analyzer to front panel control, press [ [

BASIC ][DISPLAY SETUP ][LOWER ][RETURN ][CONTINUE ]. If you changed

any instrument setup states, press [

BASIC ]. To continue the program, press

RESTART TEST ] instead of [ CONTINUE ]to

ensure accurate measurement results.

3-11

Verifying Specifications Agilent 35670A To run the program in manual mode

To run the program in manual mode

Use this procedure if you want to run the program in manual mode. You will be prompted to set up all test equipment and you can check the analyzer’s setup state after each measurement.

Write in the information needed on the title page of the selected test record.

•

The test records are located near the back of this chapter and may be copied without written permission of Agilent Technologies.

Press the following keys and when the program prompts you, set all GPIB

•

addresses to 0:

[

EQUIP CONFIG ]

[

AC CALIBRATO ]

[

SYNTH. 1 ]

[

SYNTH. 2 ] (If needed)

[

LOW-D OSCILLATO ] (If needed)

[

MULTIMETER ]

[

RETURN ]

• Press the following keys:

TEST CONFIG ]

[

PROCEDURE ]

[

OP_VERIFY ]or[PERFORMAN ]

[

STOP AFTER ]

[

EACH MEASUREMENT ]

[

RETURN ]

• Press the following keys to start the test:

START TESTING ]

[

START BEGINNING ]

• Now follow the directions on the display and record the measurement result in

the selected test record after every measurement.

If you want to view the analyzer’s setup state, press [ [

MEASURMNT STATE ]or[INPUT STATE ]. To continue the program, press

[

BASIC ][DISPLAY SETUP ][LOWER ][RETURN ][CONTINUE ]. If you changed

any instrument setup states, press [

RESTART TEST ] instead of [ CONTINUE ]to

ensure accurate measurement results.

BASIC ][Disp Format ]

Warning During the test, the program prompts you to change the test equipment

connections. Always turn the ac calibrator output to OFF or STANDBY before changing test equipment connections. The ac calibrator can produce output voltages that could result in injury to personnel.

The directions on the display briefly tell you how to connect test equipment. For detailed illustrations of equipment setup, see the setup illustrations starting on the next page.

3-12

Agilent 35670A Verifying Specifications

To set up the self test

Performance Test and Operation Verification

This test checks the measurement hardware in the Agilent 35670A. No performance tests should be attempted until the analyzer passes this test. This test takes approximately one minute to complete, and requires no external equipment.

3-13

Verifying Specifications Agilent 35670A To set up the dc offset test

To set up the dc offset test

Performance Test and Operation Verification

This test verifies that the Agilent 35670A meets its single channel amplitude specification for residual dc responses. In this test, the Agilent 35670A measures its internal residual dc offset at two amplitudes.

1 2ch

1 4ch

3-14

Agilent 35670A Verifying Specifications

To set up the noise test

Performance Test and Operation Verification

This test verifies that the Agilent 35670A meets its input noise specification. In this test, the Agilent 35670A measures its internal noise level.

1 2ch

1 4ch

3-15

Verifying Specifications Agilent 35670A To set up the spurious signals test

To set up the spurious signals test

Performance Test and Operation Verification

This test verifies that the Agilent 35670A meets its FFT dynamic range specification for spurious and residual responses. In this test, the Agilent 35670A measures its internal spurious signals. The test records at the end of this chapter list the frequencies that are checked.

1 2ch

1 4ch

3-16

Agilent 35670A Verifying Specifications

To set up the amplitude accuracy test

Performance Test and Operation Verification

This test verifies that the Agilent 35670A meets its single channel amplitude specification for FFT full scale accuracy at 1 kHz. In this test, an ac calibrator outputs a 1 kHz signal with an exact amplitude to all channels. This test checks

amplitude accuracy at 27, 19, 9, 1, −11, −27, −35, −43, and −51 dBVrms.

1 2ch

1 4ch

3-17

Verifying Specifications Agilent 35670A To set up the flatness test

To set up the flatness test

Performance Test and Operation Verification

This test verifies that the Agilent 35670A meets its single channel amplitude specification for FFT full scale flatness relative to 1 kHz. In this test, the ac calibrator outputs a signal with an exact amplitude to all channels. The test records at the end of this chapter list the amplitudes and frequencies that are checked.

1 2ch

1 4ch

3-18

Agilent 35670A Verifying Specifications

To set up the amplitude linearity test

Performance Test and Operation Verification

This test verifies that the Agilent 35670A meets its single channel amplitude specification for FFT amplitude linearity at 1 kHz. In this test, the ac calibrator outputs a 1 kHz signal with an an exact amplitude to all channels. This test checks

amplitude linearity at 27, 13, −1, −15, −29, −43, and −53 dBVrms.

1 2ch

1 4ch

3-19

Verifying Specifications Agilent 35670A To set up the A-weight filter test

To set up the A-weight filter test

Performance Test and Operation Verification

This test verifies that the Agilent 35670A meets its input specification for A-weight filter. In this test, an ac calibrator outputs a 1 dBVrms signal with an exact amplitude to all channels. The test records at the end of this chapter list the frequencies that are checked.

1 2ch

1 4ch

3-20

Agilent 35670A Verifying Specifications

To set up the channel match test

Performance Test and Operation Verification

This test verifies that the Agilent 35670A meets its cross channel amplitude and cross channel phase specification. In this test, the Agilent 35670A’s source outputs an identical signal to all channels. The Agilent 35670A measures the amplitude and phase of the signal and compares the values measured on one channel to the values measured on another channel.

1 2ch

1 4ch

3-21

Verifying Specifications Agilent 35670A To set up the frequency accuracy test

To set up the frequency accuracy test

Performance Test and Operation Verification

This test verifies that the Agilent 35670A meets its frequency accuracy specification. In this test, the analyzer measures the frequency of an accurate 50 kHz signal.

1 2ch

1 4ch

3-22

Agilent 35670A Verifying Specifications

To set up the anti-alias filter test

Performance Test only

This test verifies that the Agilent 35670A meets its FFT dynamic range specification for frequency alias responses. In this test, a frequency synthesizer

outputs a −9 dBVrms signal known to cause an alias frequency to all channels. The

Agilent 35670A then measures the alias frequency to determine how well the alias frequency was rejected. The test records at the end of this chapter list the frequencies that are checked.

1 2ch

1 4ch

3-23

Verifying Specifications Agilent 35670A To set up the input coupling test

To set up the input coupling test

Performance Test only

This test verifies that the Agilent 35670A meets its input specification for ac coupling rolloff. In this test, a frequency synthesizer outputs a 1 Hz signal to all channels. The signal is measured in both ac and dc coupled modes. The value measured in ac coupled mode is subtracted from the value measured in dc coupled mode to determine the ac coupling rolloff.

1 2ch

1 4ch

3-24

Agilent 35670A Verifying Specifications

To set up the harmonic distortion test

Performance Test only

This test verifies that the Agilent 35670A meets its FFT dynamic range specification for harmonic distortion. In this test, a low distortion oscillator or a frequency synthesizer and 24.5 kHz notch filter outputs a signal to all channels. The second, third, fourth, or fifth harmonic is then measured. If the harmonic falls outside the analyzer’s frequency range, the analyzer measures the alias frequencies. The test records at the end of this chapter list the fundamental frequencies. If you are using the synthesizer and notch filter, the frequencies listed in the test record are approximate.

1 2ch Using an HP339A

1 4ch Using an HP 339A

3-25

Verifying Specifications Agilent 35670A To set up the harmonic distortion test

1A 2ch Using a synthesizer and notch filter

2A 2ch Using a synthesizer and notch filter

1A 4ch Using a synthesizer and notch filter

3-26

Agilent 35670A Verifying Specifications

To set up the harmonic distortion test

2A 4ch Using a synthesizer and notch filter

3-27

Verifying Specifications Agilent 35670A To set up the intermodulation distortion test

To set up the intermodulation distortion test

Performance Test only

This test verifies that the Agilent 35670A meets its FFT dynamic range specification for intermodulation distortion. In this test, two signals are combined to provide a composite signal to all channels. The intermodulation products are

found at the sum (F1 + F2) and difference (F1 − 2F2) frequencies. The analyzer

measures the amplitude of each intermodulation product.

1 2ch Using an HP 3326A

1 4ch Using an HP 3326A

3-28

Agilent 35670A Verifying Specifications

To set up the intermodulation distortion test

1A 2ch Using 2 HP 3325’s

1A 4ch Using 2 HP 3325’s

3-29

Verifying Specifications Agilent 35670A To set up the cross talk test

To set up the cross talk test

Performance Test only

This test verifies that the Agilent 35670A meets its input specification for channel-to-channel and channel-to-source cross talk. In this test, the Agilent 35670A measures the amount of energy induced from the source or input channel to another input channel. For source-to-channel crosstalk, the analyzer’s source is set for 25.6 kHz, 9 dBVrms and the signal level at the input channels is measured. For channel-to-channel crosstalk, the frequency synthesizer outputs a

25.6 kHz or 51.2 kHz, 9 dBVrms signal to all but one input channel and the signal level at the unused input channel is measured.

1 2ch

2 2ch

3-30

Agilent 35670A Verifying Specifications

To set up the cross talk test

3 2ch

1 4ch

2 4ch

3-31

Verifying Specifications Agilent 35670A To set up the cross talk test

3 4ch

4 4ch

3-32

Agilent 35670A Verifying Specifications

To set up the cross talk test

5 4ch

3-33

Verifying Specifications Agilent 35670A To set up the single channel phase accuracy test

To set up the single channel phase accuracy test

Performance Test and Operation Verification

This test verifies that the Agilent 35670A meets its single channel phase accuracy specification. In this test, a frequency synthesizer outputs an identical square wave to all channels and a synchronized TTL-level signal to the trigger input. The phase difference between the trigger and each channel is measured to determine phase accuracy.

1 2ch

1 4ch

3-34

Agilent 35670A Verifying Specifications

To set up the external trigger test

Performance Test only

This test verifies that the Agilent 35670A meets its trigger specification for external trigger level accuracy. In this test, a frequency synthesizer outputs a 1 kHz signal to the external trigger input and a 12.8 kHz signal to channel 1. The analyzer makes an accurate triggered measurement on channel 1 to verify the trigger level and slope.

1 2ch Using an HP 3326A

1 4ch Using an HP 3326A

3-35

Verifying Specifications Agilent 35670A To set up the external trigger test

1A 2ch Using two HP 3325’s

1A 4ch Using two HP 3325’s

3-36

Agilent 35670A Verifying Specifications

To set up the tach function test

Performance Test and Operation Verification

This test is only for Agilent 35670A’s with option 1D0, computed order tracking. This test verifies that the Agilent 35670A meets its tachometer specification for trigger level accuracy. In this test, a frequency synthesizer outputs a signal to the tachometer input and to channel 1. The analyzer makes an accurate order measurement on channel 1 to verify the trigger level and slope.

1 2ch Using an HP 3326A

1 4ch Using an HP 3326A

3-37

Verifying Specifications Agilent 35670A To set up the tach function test

1A 2ch Using two HP 3325’s

1A 4ch Using two HP 3325’s

3-38

Agilent 35670A Verifying Specifications

To set up the input resistance test

Performance Test only

This test verifies that the Agilent 35670A meets its input resistance specification. In this test, a digital multimeter directly measures the input resistance of each channel. The digital multimeter is set to the 1 M

Ω range.

1 2ch

2 2ch

1 4ch

3-39

Verifying Specifications Agilent 35670A To set up the input resistance test

2 4ch

3 4ch

4 4ch

3-40

Agilent 35670A Verifying Specifications

To set up the ICP supply test

Performance Test and Operation Verification

This test verifies that the Agilent 35670A meets its input specification for ICP signal conditioning. In this test, a digital multimeter directly measures the open circuit voltage of each channel. The digital multimeter measures the current souce of each channel by measuring the voltage across a 50

The digital multimeter is set to the 100 V range to measure open circuit voltage and set to the 1 V range to measure the current source.

Ω feedthrough termination.

1 2ch

2 2ch

3-41

Verifying Specifications Agilent 35670A To set up the ICP supply test

3 2ch

4 2ch

1 4ch

2 4ch

3-42

Agilent Technologies 35670-90066 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual