LeCroy WS454, WS434, WS452, WS424, WS432 Service manual

LeCroy Color Digital Oscilloscopes
WaveSurfer 400 Series
Service Manual

Version A- September 2004

WAVESURFER-SM-E ECO 1

LeCroy Corporate Headquarters

700 Chestnut Ridge Road
Chestnut Ridge, NY 10977-6499
USA

Tel : [phone]
http://www.lecroy.com

LeCroy European Service
LeCroy SA

4, Rue Moïse Marcinhes
Case postale 341
1217 Meyrin 1
Geneva

Tel : [phone]

LeCroy Japan Service

LeCroy Japan Corporation
Sasazuka Center Bldg. – 6th floor,
1-6, 2-Chome, Sasazuka, Shibuya-ku
Tokyo Japan 151-0073

Tel. [phone]

© 2004 by LeCroy Corporation. All rights reserved.

LeCroy, ActiveDSO, ProBus, SMART Trigger, WavePro, WaveRunner and WaveSurfer are
registered trademarks of LeCroy Corporation. JitterTrack, WaveMaster, and X-Stream are
trademarks of LeCroy Corporation. Information in this publication supersedes all earlier
versions. Specifications subject to change without notice.

Table of Contents i

Read this first

Warranty 1-1

1. Warranty and Product Support 1-1

1.2 Product Assistance 1-1

1.3 Maintenance Agreements 1-1

1.4 Staying Up to Date 1-2

1.5 Service and Repair 1-2

1.6 How to return a Product 1-2

1.7 What Comes with Your Scope 1-2

General Information 2-1

2.1 Product Assistance 2-1

2.2 Installation for Safe and Efficient Operation 2-1
Operating Environment 2-1
Safety Symbols 2-1
Power Requirements 2-3
Cleaning and Maintenance 2-3
Power On 2-3

Specifications 3-1

3.1 Vertical 3-1

3.2 Triggering System 3-1

3.3 Standard Triggers 3-1

3.4 Optional SMART Triggers® 3-2

3.5 Documentation and Connectivity 3-2

3.6 Measure, Zoom, and Math Tools 3-3

3.7 Automatic Setup 3-3

3.8 Setup and Waveform Storage 3-3

3.9 Outputs 3-3

3.10 Environmental and Safety 3-4

3.11 Physical Dimensions 3-4

3.12 General 3-4

3.13 Warranty & Calibration 3-4

ii Table of Contents

Theory of Operation 4-1

4.1 System Block Diagram 4-1

4.2 Main Board 4-2

4.2.1 Front End 4-3

4.2.2 Analog to Digital Converter 4-5

4.2.3 Trigger 4-6

4.2.4 Time Base 4-9

4.2.5 Calibrator 4-10

4.2.6 Scan DAC 4-10

4.2.7 Main Board Control 4-10

4.3 Computer 4-11

4.3.1 Operating System 4-11

4.3.2 Memory 4-11

4.3.3 Interfaces 4-11

4.3.4 Storage Devices 4-11

4.3.5 Video port 4-11

4.4 PCI Card 4-12

4.4.1 PCI Interface 4-12

4.4.2 Local bus for acquisition 4-13

4.4.2.1 Control 4-13

4.4.2.2 Acquisition Data 4-13

4.4.3 Dallas OneWire Interface 4-13

4.4.4 Audio amplifire 4-13

4.5 Front Panel 4-13

4.5.1 Key board 4-14

4.5.2 Panel Board 4-14

4.5.2.1 Encoders 4-14

4.5.2.2 Touchscreen Interface 4-14

4.6 Display and Touchscreen 4-15

4.6.1 Color LCD Module 4-15

4.6.2 Backlight Inverter 4-15

4.6.3 Touch Screen 4-15

4.6.4 LVDS receiver 4-15

4.7 Power Supply 4-16

4.7.1 Input Voltages 4-16

4.7.2 Output Voltages 4-17

4.7.3 Basic Operation 4-17

4.7.3.1 Pre-converter 4-17

4.7.3.2 Main Converter 4-17

4.7.3.3 House Keeping Power Supply 4-17

4.7.3.4 +5VDIG and 3.3V DC/DC(Daughter Board) 4-17

4.7.3.5 +5VANA and 2.5V DC/DC (Daughter Board) 4-18

4.7.3.6 +9 and 12V DC/DC (Daughter Board) 4-18

4.7.3.7 -5V and –12V Forward converter 4-18

4.7.3.8 Filter Circuits (Daughter Boards) 4-18

4.7.4 Connector Assignments 4-18

4.7.5 Output Voltage Adjustment Range 4-21

4.7.6 +5VSB Standby Supply Rail 4-21

Theory of Operation

4.7.7 Control 4-21

4.7.7.1 Output Enable OUTPUT-EN/ (active low) 4-21

4.7.7.2 Line Frequency Synchronization Output Signal (LFS) 4-21

4.7.7.3 PWR_OK signal 4-21

4.7.8 Over-Current Protection 4-22

4.7.9 Over-Temperature Protection 4-22

4.7.10 Over-Voltage Protection 4-22

Theory of Operation - List of Figures

Figure 4-1 WaveSurfer Block Diagram 4-1
Figure 4-2 Acquisition Block Diagram 4-2
Figure 4-3 Front End Block Diagram 1 4-4
Figure 4-4 Front End Block Diagram 2 4-5
Figure 4-5 HAM631 System Architecture 4-5
Figure 4-6 Channel Mode 4-6
Figure 4-7 Trigger Block 4-8
Figure 4-8 Time Base Block Diagram 4-9
Figure 4-9 Calibrator Block Diagram 4-10
Figure 4-10 PCI Card Block Diagram 4-12
Figure 4-11 Front Panel Block Diagram 4-13
Figure 4-12 Display & Touchscreen Block Diagram 4-15
Figure 4-13 Power Supply Block Diagram 4-16

Table of Contents iii

iv Table of Contents

Performance Verification

5.1 Introduction 5-1

5.1.1 List of Tested Characteristics 5-1

5.1.2 Calibration Cycle 5-1

5.2 Test Equipment Required 5-2

5.2.1 Test Records 5-2

5.3 Turn On 5-2

5.4 Input Impedance 5-3

5.4.1 Channel Input Impedance 5-3

5.4.2 External Trigger Input Impedance 5-7

5.5 Leakage Current 5-9

5.5.1 Channel Leakage Current 5-9

5.5.2 External Trigger Leakage Current 5-12

5.6 Peak-Peak Noise Level 5-14

5.7 DC Accuracy 5-16

5.7.1 Positive DC Accuracy 5-16

5.7.2 Negative DC Accuracy 5-19

5.8 Offset Accuracy 5-20

5.8.1 Positive Offset Accuracy 5-20

5.8.2 Negative Offset Accuracy 5-22

5.9 Bandwidth 5-23

5.9.1 Description 5-23

5.10 Trigger Level 5-28

5.10.1 Description 5-28

5.10.2 Channel Trigger at 0 Division Threshold 5-28

5.10.3 Channel Trigger at +2.5 Divisions Threshold 5-31

5.10.4 Channel Trigger at −2.5 Divisions Threshold 5-32

5.11 Time Base Accuracy 5-34

5.11.1 Description 5-34

5.11.2 Clock Verification Procedure 5-34

Maintenance

6.1 Introduction 6-1

6.1.1 Safety Precautions 6-1

6.1.2 Anti-static Precautions 6-1

6.3 Software Update Procedure 6-2

6.3.1 Installing New X-Stream DSO Application Software 6-2

6.3.2 Software End User License Agreement 6-3

6.3.3 Installing Device Drivers 6-7

6.3.4 Restoring the Operating System 6-8

6.3.5 Software Options 6-12

6.3.5.1 Changing Software Option Key 6-12

6.4 Board Exchange Procedure 6-13

6.4.1 PCI Board Exchange Procedure 6-13

6.4.2 Hard Drive Replacement Procedure 6-13

6.4.2.1 Required items 6-13

6.4.2.2 Preparation of host machine 6-13

6.4.2.3 Copying necessary files to share them through network 6-14

6.4.2.4 Creating a network-ready startup disk 6-15

6.4.2.5 Updating the hard disk (through a network) 6-18

6.4.2.6 Setup at the first startup 6-20

6.4.2.7 Validating the software 6-22

6.4.2.8 Initialization of panel setup 6-22

6.4.2.9 BIOS setting 6-23

6.5 Battery Exchange Procedure 6-26

6.6 Update BIOS 6-26

6.7 Equipment and Spare Parts Recommended for Service 6-27

6.7.1 Test Equipment Required 6-27

6.7.2 WaveSurfer Spare Parts 6-27

6.8 Service Menu 6-28

6.8.1 Accessing Service Menu 6-28

6.8.2 Mainframe Tests 6-29

6.8.2.1 Front Panel Test 6-29

6.9 Calibration Procedures 6-31

6.9.1 System Power Supply Calibration Procedure 6-31

6.9.2 Touch Screen Calibration Procedure 6-33

6.9.3 Front/ACQ System Adjustments 6-35

6.9.3.1 Internal reference voltage adjustment 6-35

6.9.3.2 Front end adjustment 6-36

6.9.3.3 TDC adjustment 6-39

6.9.3.4 Trigger delay adjustment 6-39

6.9.3.5 Trigger hysteresis adjustment 6-40

6.9.3.6 Event trigger delay adjustment 6-40

6.9.3.7 Odd path adjustment 6-41

6.9.3.8 Trigger analog time adjustment 6-42

6.9.3.9 Adjustment of time difference between channels 6-44

6.9.3.10 Speaker volume adjustment 6-45

6.10 Troubleshooting and Flow Charts 6-45

6.10.1 Introduction 6-45

Table of Contents v

vi Table of Contents

Maintenance

6.10.2 Repair Level 6-45

6.10.3 Initial Troubleshooting 6-46

6.10.4 Power Supply Problem 6-48

6.10.5 No Display (Internal or External) 6-49

6.10.6 Internal Display Problem 6-51

6.10.7 Boot Up Sequence 6-52

6.10.8 Front Panel Controls or Touch Screen Does not Operate 6-53

6.10.9 Timebase Problem 6-57

6.10.10 Remote Control Problem 6-58

6.10.11 Vertical Accuracy Problem 6-59

6.10.12 Bandwidth Problem 6-60

6.10.13 Line Trigger Problem 6-61

Mechanical Parts & Removal

7.1 Over All Replaceable Parts 7-1

7.2 Over All Block Diagram 7-3

7.3 Disassembly Flow Charts 7-4

7.4 OUTER Replaceable Parts 7-5

7.5 REAR & SIDE Replaceable Parts 7-5

7.6 FRONT Panel Assy 7-9

7.7 FRONT Bezel Assy 7-14

7.8 FRAME Assy (MAIN, POWER & CPU BOARD) 7-15

7.9 Spare Parts 7-16

Read this First 1-1

1. Warranty and Product Support

It is recommended that you thoroughly inspect the contents of the oscilloscope
packaging immediately upon receipt. Check all contents against the packing
list/invoice copy shipped with the instrument. Unless LeCroy is notified promptly of any
missing or damaged item, responsibility for its replacement cannot be accepted.
Contact your nearest LeCroy Customer Service Center or national distributor
immediately (see chapter 2 for contact numbers).

1.1 Warranty

LeCroy warrants its oscilloscope products for normal use and operation within
specifications for a period of three years from the date of shipment. Calibration each
year is recommended to ensure in-spec. performance. Spares, replacement parts and
repairs are warranted for 90 days. The instrument's firmware has been thoroughly
tested and is thought to be functional, but is supplied without warranty of any kind
covering detailed performance. Products not made by LeCroy are covered solely by
the warranty of the original equipment manufacturer.

Under the LeCroy warranty, LeCroy will repair or, at its option, replace any product
returned within the warranty period to a LeCroy authorized service center. However,
this will be done only if the product is determined after examination by LeCroy to be
defective due to workmanship or materials, and not to have been caused by misuse,
neglect or accident, or by abnormal conditions or operation.

1.2 Product Assistance

Help on installation, calibration, and the use of LeCroy equipment is available from the
LeCroy Customer Service Center in your country.

Note: This warranty replaces all other warranties, expressed or implied, including but
not limited to any implied warranty of merchantability, fitness, or adequacy for any
particular purpose or use. LeCroy shall not be liable for any special, incidental, or
consequential damages, whether in contract or otherwise. The client will be responsible
for the transportation and insurance charges for the return of products to the service
facility. LeCroy will return all products under warranty with transport prepaid.

1.3 Maintenance Agreements

LeCroy provides a variety of customer support services under Maintenance Agreements.
Such agreements give extended warranty and allow clients to budget maintenance costs
after the initial three-year warranty has expired. Other services such as installation,
training, enhancements, on-site repairs and calibrations are available through special
supplemental support agreements.

1-2 Read this First

1.4 Stay i n g U p to Date

LeCroy is dedicated to offering state-of-the-art instruments, by continually refining and
improving the performance of LeCroy products. Because of the speed with which physical
modifications may be implemented, this manual and related documentation may not
agree in every detail with the products they describe. For example, there might be small
discrepancies in the values of components affecting pulse shape, timing or offset, and —
infrequently — minor logic changes. However, be assured the scope itself is in full order
and incorporates the most up-to-date circuitry. LeCroy frequently updates firmware and
software during servicing to improve scope performance, free of charge during
warranty. You will be kept informed of such changes, through new or revised manuals
and other publications.

Nevertheless, you should retain this, the original manual, for future reference to
your scope’s hardware specifications.

1.5 Service and Repair

Please return products requiring maintenance to the Customer Service Department in
your country or to an authorized service facility. The customer is responsible for
transportation charges to the factory, whereas all in-warranty products will be returned to
you with transportation prepaid. Outside the warranty period, you will need to provide us
with a purchase order number before we can repair your LeCroy product. You will be billed
for parts and labor related to the repair work, and for shipping.

1.6 How to return a Product

Contact the nearest LeCroy Service Center or office to find out where to return the product.
All returned products should be identified by model and serial number. You should
describe the defect or failure, and provide your name and contact number. In the case of a
product returned to the factory, a Return Authorization Number (RAN) should be used.

Return shipments should be made prepaid. We cannot accept COD (Cash On
Delivery) or Collect Return shipments. We recommend air-freighting.

It is important that the RAN be clearly shown on the outside of the shipping package
for prompt redirection to the appropriate LeCroy department.

1.7 What Comes with Your Scope

Refer to chapter 10 for a list of the items that ships standard with the different
configurations of this oscilloscope.

Note: Wherever possible, please use the original shipping carton. If a substitute
carton is used, it should be rigid and packed so that that the product is surrounded
by a minimum of four inches or 10 cm of shock-absorbent material.

General Information 2-1

2. General Information

2.1 Product Assistance

Help on installation, calibration, and the use of LeCroy equipment is available from your
local LeCroy office, or from LeCroy’s

• Customer Care Center, 700 Chestnut Ridge Road, Chestnut Ridge,

New York 10977–6499, U.S.A., tel. [phone]

• European Service Center, 4, Rue Moïse Marcinhes, Case postale 341, 1217 Meyrin 1,
Geneva Switzerland, tel. [phone].

• LeCroy Japan Corporation, Sasazuka Center Bldg – 6

th

floor, 1-6, 2-Chome,

Sasazuka, Shibuya-ku, Tokyo Japan 151-0073, tel. [phone]

2.2 Installation for Safe and Efficient Operation
Operating Environment

The oscilloscope will operate to its specifications if the environment is maintained within
the following parameters:

Temperature................5 to 40 °C (41 to 104 °F) rated.

Humidity.......................Maximum relative humidity 80 % RH (non-condensing) for

temperatures up to 31 °C decreasing linearly to 50 % relative humidity
at 40 °C

Altitude.........................2000 m (6560 ft)

The oscilloscope has been qualified to the following EN61010-1 category:

Installation (Overvoltage) CategoryII

Pollution Degree.............................2

Safety Symbols

Where these symbols or indications appear on the front or rear panels, and in this

manual, they have the following meanings

:

2-2 General Information

.............................CAUTION: Refer to accompanying documents (for Safety-related

information). See elsewhere in this manual wherever the symbol is
present,as indicated in the Table of Contents.

.............................CAUTION: Risk of electric shock

..............................On (Supply)

[ Off (Supply)

.............................. Earth (Ground) Terminal

............................Protective Conductor Terminal

...............................Earth (Ground) Terminal on BNC Connectors

WARNING...................Denotes a hazard. If a WARNING is indicated on the instrument, do

not proceed until its conditions are understood and met.

WARNING

Any use of this instrument in a
manner not specified by the
manufacturer may impair the
instrument’s safety protection.

The oscilloscope has not been designed to make direct measurements on the human

body. Users who connect a LeCroy oscilloscope directly to a person do so at their own
risk.

Power Requirements

The oscilloscope operates from a 115 V (90 to 132 V) or 220 V (180 to 250 V) AC
power source at 45 Hz to 66 Hz. No voltage selection is required, since the instrument
automatically adapts to the line voltage present.

The power supply of the oscilloscope is protected against short-circuit and
overload by means of a 10.0 A/250 V AC, “T” rated fuses (size: 5 X 20 mm),
located above the mains plug. Disconnect the power cord before inspecting or
replacing a fuse. Open the fuse box by inserting a small screwdriver into the
slot and turning counter clockwise.

For continued fire protection at all line voltages, replace only with fuse of the
specified type and rating (T 10.0 A/250 V).

Maintain the ground line to avoid an electric shock.
None of the current-carrying conductors may exceed 250 V rms with respect to ground

potential. The oscilloscope is provided with a three-wire electrical cord containing a
three-terminal polarized plug for mains voltage and safety ground connection.

The plug's ground terminal is connected directly to the frame of the unit. For adequate
protection against electrical hazard, this plug must be inserted into a mating outlet
containing a safety ground contact.

Cleaning And Maintenance

Maintenance and repairs should be carried out exclusively by a LeCroy technician
Cleaning should be limited to the exterior of the instrument only, using a damp, soft
cloth. Do not use chemicals or abrasive elements. Under no circumstances should
moisture be allowed to penetrate the oscilloscope. To avoid electric shocks, disconnect
the instrument from the power supply before cleaning.

CAUTION

Risk of electrical shock:
No user serviceable parts
inside. Leave repair to
qualified personnel.

General Information 2-3

2-4 General Information

This page intentionally left blank

Specifications 3-1

3. Specifications

3.1 Vertical

WS424 WS422 WS434 WS432 WS454 WS452
Bandwidth (at probe tip) 200 MHz 350 MHz 500 MHz
Rise Time (typical) 1.75 ns 1 ns 750 ps
Input Channels 4 2 4 2 4 2
Display 10.4" Color flat-panel TFT-LCD, 800x600 SVGA, touch screen
Sample Rate (single-shot) 2 GS/s max (interleaved mode), 1 GS/s (all channels)
Sample Rate (RIS mode) 50 GS/s
Standard Record Length 500 kpts/Ch (interleaved mode), 250 kpts/Ch (all channels)
Maximum Record Length
(Optional)

2 Mpts/Ch (interleaved mode), 1 Mpts/Ch (all channels)

Standard Capture Time up to 250 µs at full sample rate
Maximum Capture Time
(Optional)

up to 1 ms at full sample rate

Vertical Resolution 8 bits
Vertical Sensitivity 1 mV/div - 10 V/div (1 MΩ); 1 mV/div - 2 V/div (50 Ω)
Vertical (DC Gain) Accuracy ±(1.5% + 0.5% of full scale)
BW Limit 20 MHz 20 MHz, 200 MHz
Maximum Input Voltage ±400 Vpk (CAT I), ±300 Vpk (CAT II)
Input Coupling AC, DC, GND (AC for 1 MΩonly)
Input Impedance 1 MΩ//16 pF, or 50 Ω+/-1%,
Probing System BNC or ProBus®
Probes One PP007 per channel (standard)
Time/div Range 1 ns - 1000 s/div 500 ps - 1000 s/div 200 ps - 1000 s/div
Roll mode from 200 ms/div - 1000 s/div
Timebase Accuracy 10 ppm

3.2 Triggering System

Trigger Modes Normal,Auto, Single, and Stop
Sources Any input channel, External, Ext/10, or line; slope and level unique to

each source (except for line trigger)
Trigger Coupling AC, DC, HF, HFRej, LFRej
Pre-trigger Delay 0 – 100% of full scale
Post-trigger Delay 0 – 10,000 divisions
Hold-off 2 ns to 20 s or 1 to 99,999,999 events
Internal Trigger Level Range ±5 div from center
External Trigger Range EXT/10 ±5 V; EXT ±500 mV
External Trigger Input Impedance 50 Ω, 1MΩ

3.3 Standard Triggers

Edge Triggers when signal meets slope (positive, negative, or Window) and

level condition

Glitch Triggers on positive or negative glitches with widths selectable from 2 ns

to 20 s or on intermittent faults. Includes exclusion mode (trigger on
intermittent faults by specifying the normal width period).

Width Triggers on positive or negative glitches with widths selectable from 2 ns

to 20 s or on intermittent faults. Includes exclusion mode (trigger on
intermittent faults by specifying the normal width period).

Logic (Pattern) Logic combination (AND,NAND, OR, NOR) of 5 inputs (4 channels and

external trigger input). Each source can be high, low, or don’t care.The
High and Low level can be selected independently.

TV-Composite Video Triggers selectable fields (1, 2, 4, or 8), Positive or Negative slope, for

NTSC, PAL, SECAM, or non-standard video (up to 1500 lines)

3.4 Optional SMART Triggers®

Runt Trigger on positive or negative runts defined by two voltage limits and

two time limits. Select between 2 ns and 20 ns. Includes exclusion mode
(trigger on intermittent faults by specifying the normal width period).

Slew Rate Trigger on edge rates. Select limits for dV, dt, and slope. Select edge

limits between 2 ns and 20 ns. Includes exclusion mode (trigger on
intermittent faults by specifying the normal width period).

Interval (Signal or Pattern) Triggers on a source if a given state (or transition edge) has occurred on

another source. Delay between sources is 2 ns to 20 s, or 1 to
99,999,999 events. Includes exclusion mode (trigger on intermittent
faults by specifying the normal width period).

Dropout Triggers if signal drops out for longer than selected time between 2 ns

and 20 s. Includes exclusion mode (trigger on intermittent faults by
specifying the normal width period).

Qualified (State or Edge) Triggers on any input source only if a defined state or edge occurred on

another input source. Delay between sources is 2 ns to 20 s, or 1 to
99,999,999 events. Includes exclusion mode (trigger on intermittent
faults by specifying the normal width period).

3.5 Documentation and Connectivity

Printing Connect to any WindowsXP-compatible printer. Load any standard

WindowsXP printer driver onto the unit as future needs require.

Email Configure the unit to send an email of a screen image in a variety of

formats using MAPI (i.e. through a default email program) or SMTP (no
additional program needed).

Waveform Memories Save waveform data as a reference trace to be compared to channels,

zooms, or math functions.

Waveform File Data Save waveform data in the following formats: Binary, ASCII,

Excel,Mathcad,MATLAB.

Screen Image Save a screen image to the internal hard drive, a user-supplied USB

memory stick, or any other peripheral connected to one of the three USB

2.0 ports. Image can be saved in a variety of formats, and with white or
black background.

Waveform Labeling (Annotation) Attach up to 10 labels to any combination of waveforms. Labels appear

on screen images.

Hardcopy Front Panel Button Configure the front panel Hardcopy button to send an email, save a

screen image, save waveform file data, and save to the clipboard.

Networking Standard 10/100Base-T Ethernet interface (RJ-45 connector). Connect

to any network using DHCP with automatically assigned IP address.
Remote Control Via LeCroy Remote Command Set (via Ethernet)
USB Ports 3 USB ports (one on front of instrument) support Windows compatible

devices
External Monitor Port Standard 15-pin D-Type female SVGA-compatible connector for external

color
Parallel Port 25-pin D-type female (Centronics)
Serial Port 9-pin D-type male (not for remote oscilloscope control)
Audio Port Mic Input, Line Input, Line Output

3-2 Specifications

Specifications 3-3

3.6 Measure, Zoom, and Math Tools

Standard Parameter
Measurement

Up to 6 of the following parameters can be calculated at one time on any

waveform: Amplitude,Area, Base (Low), Delay, Duty, Fall Time (90%-

10%), Fall Time (80%-20%),

Frequency,Maximum,Mean,Minimum,Overshoot+, Overshoot-, Period,

Peak-Peak, Rise Time (10%-90%), Rise Time (20%-80%), RMS, Skew,

Standard Deviation, Top (High), Width. Measurements may be gated.
Zooming Use front panel QuickZoom button, or use touch screen or mouse to

draw a box around the zoom area.
Standard Math Operators include Sum, Difference, Product, Ratio, and FFT (up to 25

kpts with power spectrum output and rectangular,VonHann, and FlatTop

windows). 1 math function may be defined at a time.
Extended Math (MathSurfer
Options)

Adds the following additional math functions: Absolute Value,Averaging

(summed and continuous), Derivative, Envelope, Enhanced Resolution

(to 11 bits), Floor, Integral, Invert, Reciprocal, Roof, Square, and Square

Root. Also adds chaining of two math functions, and rescaling to different

units.

3.7 Automatic Setup

Auto Setup Automatically sets timebase, trigger, and sensitivity to display a wide

range of repetitive signals.
Vertical Find Scale automatically sets the vertical sensitivity and offset for the selected

channel.
Analog Persistence When ON, persistence applied to all waveforms. Select analog or color-

graded. Variable saturation level, with aging time selectable from 500 ms

to infinity.

3.8 Setup and Waveform Storage

Front Panel and Instrument
Status

Save to the internal hard drive, over the network, or to a USB connected

peripheral device.
Waveform Traces Save to one of four internal memories with 16 bit resolution for

recall/comparison.
Waveform Data Save to the internal hard drive, over the network, or to a USB connected

peripheral device.

3.9 Outputs

Calibrator 1 KHz square wave or DC level; Select from -1.0 to +1.0 into 1 MΩ,

output on front panel test point and ground lug
Control Signals Rear Panel: TTL level, BNC output; Choice of trigger ready, trigger out, pass/fail

status. (output resistance 300 Ω ±10%)

3.10 Environmental and Safety

Temperature (Operating) +5 °C to +40 °C
Temperature (Non-Operating) –20 °C to +60 °C
Humidity (Operating) 5% to 80% relative humidity (non-condensing) at <= 30 °C.Upper limit

derates to 55% relative humidity (non-condensing) at +40 °C.
Humidity (Non-Operating) 5% to 95% relative humidity (non-condensing) as tested per MIL–PRF–

28800F.
Altitude (Operating) up to 3048 m (10,000 ft) at up to 25 °C
Altitude (Non-Operating) up to 12,190 m (40,000 ft)
Vibration (Operating) Random vibration, 0.31 grms 5 Hz to 500 Hz, 15 minutes in each of three

orthogonal axes
Vibration (Non-Operating) Random vibration, 2.4 grms 5 Hz to 500 Hz, 15 minutes in each of three

orthogonal axes
Functional Shock 20 g peak, half sine, 11 ms pulse, 3 shocks (positive and negative) in

each of three orthogonal axes, 18 shocks total
Certification CE Approved, UL (Std. UL 3111-1) and cUL (Std. CSA C22.2 No. 1010-

1) listed. EMC Directive 89/336/EEC;

EN61326-1:1997+A1:1998+A2:2001. Low Voltage Directive 73/23/EEC;

EN 61010-1:2001 Product Safety (Installation Category II, Pollution

Degree 2, Protection Class 1)

3.11 Physical Dimensions

Dimensions (HxWxD) 260 mm x 340 mm x 152mm (10.25" x 13.4" x 6"). Excluding accessories

and projections.
Net Weight 6.8 kg (15 lbs). Excluding accessories.

3.12 General

Power (AC) 100–120 Vrms at 50/60/400 Hz; 200–240 Vrms at 50/60 Hz;Max.

Power Consumption: 170 VA

3.13 Warranty & Calibration

Warranty Three year warranty.
Calibration Calibration recommended yearly.

3-4 Specifications

Theory of Operation 4-1

4. Theory of Operation

4.1 System Block Diagram

Figure 4-1 WaveSurfer Block Diagram

4-2 Theory of Operation

4.2 Main Board

The main board is divided into the following sections:

• Front End
Based on high impedance buffer, variable gain amplifier and differential
amplifiers.

• Analog to Digital Converter
Based on the HAM631 and the relay switchyard to combine the input channels.

• Trigger
Based on the Hybrids HTR420 discriminator & MST429A smart trigger.

• Time Base
Based on the MCG426 clock generator & MTB411A controller.

• Calibrator

• SCAN DAC

• Main Board Control

MAIN BOARD
CONTROL

TDC

D0-7

AC Calibration

HTR420

32bit Bus

8bit Bus

Calibrator

D0-31

D24-31

HTR420

TIME BASE

D16-23

CH1
ADC
System

SCAN DAC

HTR420

D8-15

Zo=50ohms

CH1
FRONT
END

CH4
FRONT
END

Serial Bus

HTR420

CH3
FRONT
END

TRIGGER

PCI Card

CH2
FRONT
END

EXT
input

HTR420

DC Calibration

MAM633
Control

CH4
ADC
System

MST429A

PCI Bus

Time Base Control

CH3
ADC
System

MCG426

FPGA

MTB411A

Serial Bus

CH2
ADC
System

Trigger signal

uATX Board

Analog Control

Figure 4-2 Acquisition Block Diagram

4.2.1 Front End

The front end processes an analog signal for ADC and trigger, consists of 1M ohms
attenuators, high impedance buffer, 200 ohms attenuator, variable gain amplifier
SA5209D and differential amplifiers.

The main functions of the Front end without the amplifiers are:

• Four channels operation, calibration with Software control.

• Input protection (clamp + thermal detection) and coupling (AC, DC, 1MΩ, 50Ω).

• Attenuator by 5, by 10, by 50, by 100 & by 500.

• Offset control of ±1V.

• Detection of 50Ω over loading.

• Input of signal for DC calibration and skew calibration.

The main functions of SA5209D and differential amplifiers are:

• Amplitude normalization for the ADC system : at the BNC the dynamic range is 16
mV to 80V FS (full scale) and the ADC/TRIG system input is 500 mV differential.

• Fine adjustment of gain and variable control.

• Band width limiter of 20MHz, 200MHz.

• Switch for channel combine mode.

Control

Relay control
The relay of the attenuator is set by selecting the input coupling and the gain as shown in
the table below.
All relays are driven with +5V/0V.

Input coupling

Control port Relay GND 1M,DC 1M,AC 50,DC
CAL RL2 H L L L

1M/*50 RL1 H H H L
AC/*DC RL5 H L H L
1/*10 RL3 H X X X
1/*100 RL4 L X X X

Switch of attenuator

Control port Relay 2mV-49mV 50mV-0.49V 0.5V-10V
1/*10 RL3 H L L

1/*100 RL4 H H L

Theory of Operation 4-3

4-4 Theory of Operation

Divide gain

The gain ratio in each block and input range is a table below.
At the BNC the dynamic range is 16 mV to 80V FS (full scale) and the output is 500 mV
differential (HAD631 input).

Range V/div
Block

2mV 5mV 10mV 20mV 50mV 100mV 200mV 500mV 1V 2V 5V 10V

ATT 1/*10

1 1 1 1 1 0.1 0.1 0.1 0.1 0.1 0.1 0.1

ATT 1/*100

1 1 1 1 1 1 1 1 0.1 0.1 0.1 0.1

ATT 1/5

1 1 1 0.2 1 1 0.2 1 1 0.2 0.2 0.2

SA5209D

31.25 12.5 6.25 15.62 1.25 6.25 15.62 1.25 6.25 15.62 6.25 3.125

Total(ratio)

31.25 12.5 6.25 3.125 1.25 0.625 0.3125 0.125 0.0625 0.03125 0.0125 0.00625

Analog control voltage

Circuit name signal level Signal name
CHx OFFSET +/-4V Offset control signal for Front End
CHx GAIN +/-4V SA5209D gain control signal
CHx OS ADJ 0 to +4V Offset control signal for differential amplifiers
INT CAL -6V to +6V Signal each CH commonness for calibration

1 / 10

+12V

R88

0.047uF

400k ohms

1 / 10

Q8

CHx Input

CHx SIG

RL1

2200pF

CHx OFFSET

400k ohms

Q3

high impedance buffer

50 ohms

RL5

DC signal for Over Load

RL6

RL4

800k ohms

to differencial amplifiers

RL4

INT CAL

DC signal for offset level

CHx CAL SIG

CHx OVLD

RL3

Thermistor

RL2

DC signal for DC calibration

CHx GND

Q6

Square wave for skew calibration

1 / 5

Figure 4-3 Front End Block Diagram 1

20MHz &
200MHz
Bandwidth
Limiter

CHx GAIN

Offset adjust control

to ADC system

CHx TRIG SIG

CHx GND

Differencial signal for Trigger Comparator

Differencial amplifier

Variable gain control

Differencial
500mVpp full scale

OffsetGain

Differencial amplifier

Bandwidth
Limiter

*CHxa SIG

CHxa SIG

Differencial amplifier

CHx SIG

Variable gain amplifier

CHx OS ADJ

to ADC system

CHxb SIG

from Front End input

*CHxb SIG

Bandwidth limiter for
DC calibration

SA5209D

Bandwidth
Limiter

*CHx TRIG SIG

Figure 4-4 Front End Block Diagram 2

4.2.2 Analog to Digital Converter

The analog to digital converter system does the signal conversion to 8 bits, using

the HAM631:

The system has the relay switchyard to combine the input channels.

• HAM631
Hybrid ADC 1GS/s with 4Mb memory. It consists of MAD442 and MAM633.
Provide 83 MHz clock for memory and refresh for DRAM.

Analog Control voltage

Circuit name signal level Signal name
CHx ADGAN 0 to +4V Adjust ADC gain (+/-15%)
CHx ADOFS 0 to +4V Adjust ADC offset (+/-100mV)
CHx ADDLY 0 to +4V Adjust ADC sampling delay (+/-250ps)
These are mainly used on channel combine mode.

ADC Sampling Clock

MAM633

ADC Offset Adjustment

MAD442

2

PCI
Card

2

HAM631

SYSCLK

MAM633 Control

CHx ADGAN

CHx ADC SIG

ADC Sampling Delay
Adjustment

CHx ADOFS

1GS/s 8bit
ADC

4MB
Aquisition
Memory

CHx SHCK

CHx ADDLY

ADC Gain Adjustment

2

8bit Data Bus

MAIN BOARD

83MHz System Clock
for DRAM

Figure 4-5 HAM631 System Architecture

Theory of Operation 4-5

4-6 Theory of Operation

HAM631

CH1b SIG

CH2b SIG

20RL2

CH1 signal

CH4a SIG

Differencial

HAM631

20RL1

2

CH2a SIG

CH3a SIG

21RL2CH4 ADC

21RL1

Channel combine mode
(CH1 & CH3)

CH3 signal

CH2 ADC

CH4 ADC

4 channels mode

CH2a SIG

CH1a SIG CH1a SIG

CH3b SIG

CH2 ADC

21RL2

2

CH1
Front
End

CH1 ADC CH1 ADC

CH4
Front
End

HAM631

CH3
Front
End

20RL2

CH3 signal

HAM631

CH4
Front
End

CH3 signal

CH4a SIG

CH2
Front
End

CH2
Front
End

CH1 signal

2

HAM631

21RL1

CH1b SIG

CH3
Front
End

CH2 signal

CH4 signal

2

HAM631

CH2b SIG

CH1 signal

CH3 ADC

20RL1

HAM631

CH3b SIG

Differencial

CH4b SIG

CH1
Front
End

CH4b SIG

CH3 ADC

CH3a SIG

HAM631

Figure 4-6 4 & 2 Channel Mode

4.2.3 Trigger

HTR420

The main function of HFE420 are:

• Generation of trigger signal (analog input and digital output) with comparator

• Setting of trigger level (TRIG,VALIDATE)

• Setting of trigger coupling (DC,AC,LFREJ,HFREJ,HF)

• Setting of slope (+,-,WINDOW)

The different trigger couplings using HTR420 are :

• DC

• AC : cut off frequency is almost 7.5 Hz.

• LF REJ : single pole high pass filter with a cut off frequency at 50 kHz.

• HF REJ : single pole low pass filter with a cut off frequency at 50 kHz.

• HF : frequency divider by four for high frequency signal.

TV Trigger

Each channel has a pick-off after the HTR420. Selected trigger source goes to
commercial chip (LM1881) via AGC amplifier and provides three outputs
(Composite Sync. Output, Vertical Sync. Output, and ODD/EVEN output) to the
MST429A.

MST429A

The main function of MST429A are:

• generates main trigger signal for Time Base system

The trigger function of MST429A are:

• Single source trigger,

¾ Standard trigger,
¾ Hold off by Time
¾ Hold off by Events,
¾ Pulse width
¾ Interval

• Multiple source trigger,

¾ State qualified,
¾ Edge qualified

Analog Control voltage

Circuit name signal level Signal name
CHx TRIG LVL1 +/-4V Trigger level control signal
CHx TRIG LVL2 +/-4V Trigger level control signal for smart trigger/window
CHx HYST 0 to +4V Trigger hysteresis control signal

Theory of Operation 4-7

4-8 Theory of Operation

Trigger level control

TRC

TRIG LVL2

TRIG LVL1

LINOUT

Comparator

External Clock signal

R88

EXT HYST

TRIG LVL2

MST REF3

RL3

800k ohms

Bandwidth
Limiter

RL2

TRB

LINOUT

EXT CLK

MST429A

Thermistor

Offset control for
ECL/0V/TTL level

OUT2

AC Line signal for Line Trigger

CH4 HYST

HTR420

ECL LVL

PLD

OUT2

1 / 10

Differencial amplifier

DC signal for DC calibration

RL3

LINE SIG

TRIG LVL1

AGC
amplifier

OUT1

OUT1

Trigger level control

EXT Input

Trigger level control

CH2 HYST

LM1881

high impedance buffer

RL1

ECL Logic level

LINOUT

HTR420

HTR420

TRA

TRIG LVL1

MST REF2

OUT2

Trigger hysteresis control

VALE

CH3 TRIG SIG

HTR420

OUT1

Differencial

to Time Base

CH4 TRIG SIG

200k ohms

*CH1 TRIG SIG

VALD

TRIG LVL1

Trigger level control

LINOUT

Trigger hysteresis control

TRIG LVL2

VALC

OUT2

EXT TRIG

EXT OVLD

MST REF4

*CH2 TRIG SIG

Differencial amplifier

MST REF1

ECLinPS Lite

VALB

2200pF

EXT
OFFSET

OUT1

INT CAL

Trigger hysteresis control

TRIG LVL2

VALA

LINOUT

DC signal for
Over Load

HTR420

Comparator

+12V

*CH4 TRIG SIG

TRE

TRIG LVL2

TRIG LVL1

OUT2

CH1 TRIG SIG

ECLB

*CH3 TRIG SIG

Buffer

CH1 HYST

CH3 HYST

50 ohms

Differencial amplifier

TRD

TV Trigger

Differencial
500mVpp full scale

Differencial amplifier

OUT1

CH2 TRIG SIG

ECLA

Trigger hysteresis control

Figure 4-7 Trigger Block Diagram

4.2.4 Time Base

The time base includes four circuits:

• MCG426: generates sampling clocks: 12.5 MHz up to 2GHz
generates clocks for the MTB411
interleaves sampling clocks to increase sampling rate and memory
depth.

• MTB411A: Time Base System
Trigger circuitry
Main oscillator circuitry
Frequency divider for a Probe Calibrator

• TDC: Time to Digital Converter interpolator and Real Time computation

• MST429A: generates main trigger signal for Time Base system.

Analog Control voltage

Circuit name signal level Signal name
MST REF1 +/-4V Reference signal for analog time of Smart trigger
MST REF2 +/-4V Reference signal for analog time of Smart trigger
MST REF3 +/-4V Reference signal for analog time of Smart trigger
MST REF4 +/-4V Reference signal for analog time of Smart trigger
TDC ADJ 0 to +4V TDC gain control signal

MTB 411

MST 429

MCG 426

HSH & ADC

SHCK_A
SHCK_B
SHCK_C
SHCK_D

2
2
2
2

MCK

TRIG

TRIG

2

Peak
Detect
MPD

10 MHz
Reference

INTREF
PHDET

VCO

VCO2G PDCK

2

2

2

RAMPST

R
A
M
PS

TRTTRT

to trigger selection

SHCK_A
SHCK_B
SHCK_C
SHCK_D

QQD

ENABLE TRIGEN

ITBUSY

MACQ

FDEND

FDCK

TR
IG
D

IT
C

TRIGD

ITCK

FDCK FDEND

MACQ

INT

2

TBCK

TSCK

TSCK TBCK

BCK

_

ITMB

to uP

MEMORY

MCK
DIN[7..0]

EXTREF

EXTCK

EXTREF

EXTCK

2

RT
C

RTCK

S2EDGE

Vcc

MCLR CLR

EN10MHZ
10MHZclock 10MHz
500MHZclock 500MHz

CONTROL
from uP

DIO(7:0) +
A(1:0) +
control

enable
clock 10MHz

Figure 4-8 Time Base Block Diagram

Theory of Operation 4-9

4-10 Theory of Operation

4.2.5 Calibrator

The main functions of the Calibrator are:

• Probe calibration signal output.

• DC calibration signal output.

• Skew calibration signal output.

x1.5
Amplifier

CAL OUT LVL

CAL OUT

Fast rise square wave

Low-pass
Filter

DDS
Synthesizer

6dB
divider

DC Calibrator

Skew Calibrator

Attenuator

+/-40mV

CH2 CAL SIG

CAL OUT CLK

MUX

MUX

+/-400mV

ECLinPS Lite

2

DC signal for amplitude

CH1 CAL SIG

AD9850

2

125MHz clock

2

Comparator

+1V 1kHz

INT CAL REF

INT CAL

+/-4V

+/-6V

to CH1 - EXT Input

1kHz

Probe
Calibrator

+/-60mV

CH4 CAL SIG

6dB
divider

Probe Calibration signal

from Time Base

+/-600mV

CH3 CAL SIG

6dB
divider

DC Calibration signal

from Time Base

Figure 4-9 Calibrator Block Diagram

4.2.6 SCAN DAC

The main functions of the SCAN DAC are:

• 16 bit precision DAC with uP system.

• 24 analog control signal outputs.

• +/-4V dynamic range outputs.

• 16 ADC inputs for Probe sense, overload detection and so on.

4.2.7 MAIN BOARD CONTROL

The main functions of MAIN BOARD CONTROL are:

• 3 wire Serial Bus for serial device control.

• IIC Bus for EEPROM, Thermometer and ProBus system.

• 16 Analog control outputs using 10 bit DAC.

• 12 Analog control outputs using 8 bit DAC.

• Interface between Main Board and PIC Card.

4.3 Computer

The WaveSurfer processor is an 850 MHz Intel Celeron processor.
This motherboard was designed for embedded system.

4.3.1 Operating System
The system uses Microsoft Windows XP embedded as the operating system.

The operating system license can be found on the rear panel of the instrument.

4.3.2

Memory

The standard memory configuration for a WaveSurfer is 256MB, consisting

of 1 piece of 32M x64 Bit PC-2100 DDR DIMM.

4.3.3 Interfaces
The standard interfaces provided by the Motherboard to external are SVGA,

Audio, Ethernet, RS-232, Centronics, three USBs(side 2, front 1), PS/2 Keyboard
and PS/2 Mouse. Also one USB and IDE port provided by the Motherboard are
used inside the unit for Front panel and HDD.

4.3.4 Storage Devices
The system has an internal hard drive of at least 30 GB in size. 10 GB is

allocated for LeCroy use, 16 GB is in a user partition for the saving of panel
setups, waveform memory, hard copies, application programs, user data, etc.
The balance is allocated as invisible partition for system recovery data

4.3.5 Video port
The Mother board has an on-board video display processor with a

LVDS output as well as the ability to drive a rear panel external display. This
external port is enabled on power up if it an external monitor is sensed. If the
monitor is connected after the initial power on, the power to the instrument must
be cycled in order for this monitor to operate.

Theory of Operation 4-11

4-12 Theory of Operation

4.4 PCI Card

The PCI card is the interface between the PCI bus on the processor card and the

rest of the system (acquisition system and amplifier for speaker). It has the
following interfaces:

- PCI interface (32 bit 33MHz bus with bus mastering capability)

- Acquisition data interface using 32bit local bus.

- Acquisition control interface using 8bit local bus.

- Dallas OneWire interface and chip for scope id.

- Audio amplifier for internal speaker.

Figure 4-10 PCI Card Block Diagram

4.4.1 PCI Interface

The PCI interface is implemented with a Xilinx FPGA. It is a 32 bit, 33 MHz bus
master that allows the PCI card to take control of the PCI bus and push data directly
into the processor memory without requiring the direct involvement of the processor.
In readout mode, the FPGA reads the data and puts it in the correct time order for
the processor memory. The FPGA also has a special readout mode to access the
acquisition data in roll mode, store the data, and then transfer this data in blocks to
the processor memory. This implementation is the most complicated but is needed
in order to maximize the PCI throughput.

4.4.2 Local bus for acquisition

The acquisition interface consists of 2 local buses to read out acquisition data and to
control the main board.

4.4.2.1 Control

All resource on main board is controlled through 8bit local bus.

4.4.2.2 Acquisition Data

32bit local bus is used to access the acquisition memories. Each 8bit is
connected to each channel's memories directly. (bit0-7 is connected to
ch1, bit8-15 is connected to ch2, bit16-23 is connected to ch3 and bit24­31 is connected to ch4)

4.4.3 Dallas OneWire Interface

The Dallas onewire interface is controlled by FPGA. The 4kbits EEPROM is
connected to this interface. This device has unique id to generate scope id.

4.4.4 Audio amplifire

The audio amplifier to drive internal speaker is on PCI board. This is independent
from other PCI function.

4.5 Front Panel

The front panel consists of two assemblies, the panel board and the key board
assembly.

Figure 4-11 Front Panel Block Diagram

Theory of Operation 4-13

4-14 Theory of Operation

4.5.1

Key board

The front panel assembly consists of the panel board PCB, the panel board metal,the
elastomeric keypad and the key board PCB. The key board PCB connects to the panel
board assembly which is connected to the mother board by USB. The key board has the
LED's which illuminate some of the front panel buttons and has trace patterns which act
as switches when the elastomeric keypad shorts the traces together in response to a key
press.
The key board has configuration jumper which must be selected based on the
identification of the front panel (2 channel model or 4 channel model).

4.5.2 Panel Board

Panel board consists of rotary encoder function and touchscreen function.
The encoder status, the front panel key status and the touch panel status is read by the
front panel processor, the H8S2212. Power for the panel board comes from the cable of
the USB.

4.5.2.1 Encoders

The panel board contains all of the rotary encoders. There are two different
types of encoders on this assembly, some have a push switch, others do not.
The V/Div and timebase use encoders that do not have push switch, the rest
of the encoders have a push switch. The encoders contain two switches, they
are not potentiometers. The software can determine the direction and speed
the encoder is turning based on the order and frequency of make and break
connections of these internal switches.

4.5.2.2

Touchscreen Interface

Provides a control interface to a 4-wire resistive touchscreen. The pointing
location is measured by 4 A/D convertors in the front panel processor.

4.6 Display and Touchscreen

Figure 4-12 Display & Touchscreen Block Diagram

4.6.1 Color LCD Module

The display module is an SHARP TFT (thin film transistor) active matrix color liquid
crystal display (LCD) module comprising amorphous silicon TFT attached to each
signal electrode, a driving circuit and a backlight. The 26cm diagonal display area
contains 800x600 pixels (SVGA) and can display 262144 colors simultaneously.

4.6.2 Backlight Inverter

The inverter which supplies power to the LCD's backlight is supplied with +12V from
the Mother board, it then converts this to 1000-2000V AC to drive the CCFT (Cold
Cathode Fluorescent Tube). There is also a signal from the Mother board which
controls the On/Off of the backlight.

4.6.3 Touch Screen

The touch screen is a 4 wire resistive touch screen. It must be calibrated so that
software can determine where a touch corresponds to a position on the screen. This
calibration is done at four points and can be invoked through the Utilities menu.

4.6.4 LVDS receiver

Mother board has LVDS output for LCD. LVDS receiver receive the LVDS signal
from Mother board, it then converts this to 18bits RGB (each color has 6bits depthfor
input type of LCD module.

Theory of Operation 4-15

4-16 Theory of Operation

4.7 Power Supply

Do not touch any electric parts inside the power supplies during operation
as the primary side of the power unit has many high voltage portions to ground.

Power Supply Unit comprises of INLET BOARD, PFC BOARD and MAIN BOARD.

The INLET BOARD includes EMI Filters.
The PFC BOARD includes Pre-converter, which is operated Power Factor
Correction.
The MAIN BOARD includes Main Converter (off line), House Keeping Power
Supply, Post Converters, Filters, Power OK Generater circuit and internal Bias
Supply Circuits.

3.3V

House
keeping
Power
Supply

-5V

Main
Converter

5VDIG and 3.3V DC/DC

MAIN POWER BOARD

INLET
BOARD

-5V and -12V
Foward Converter

-12V

5VANA

2.5V

POWER_OK_GEN

PW_OK

Filter
(-12v)

Pre-Converter
PFC

9V

Filter
(-5v)

12V

Filter
(12v)

5VDIG

PFC BOARD

Filter
(5vANA)

EMI
Filters

5VANA and 2.5V DC/DC

9V and 12V DC/DC

Solid Line Blocks represent Daughter Boards.

Figure 4-13 Power Supply Block Diagram

4.7.1 Input Voltages
The power supply supports a wide ranges of inputs, 90-132 V AC (45-65HZ, 360-

440Hz) and 90-264V AC (45-65Hz) are allowed.

4.7.2 Output Voltages

The power supply makes several output voltages:

CAPACITIVE LOADING

OUTPUT

VOLTAGE

“TOTAL”

REGULATION

BAND

Min.

Load

Typ.

Load

Max.
Load

Minimum
Capacitance

Maximum

Capacitance
+5.0Vana
(RS)

+/-1% 0.1A 4.0A 4.2A

1200µF 1800µF

-5.0V (RS) +/-1% 1.0A 5.0A 5.25A

1200µF 1600µF

+9.0V +/-2% 0.1A 0.4A 0.5A

330µF 390µF

+2.5V +/-5% 0.1A 1.0A 1.4A

1400µF 2000µF

+12.0Vana +/-1% 0.1A 0.16A 1.16A

330µF 560µF

-12.0V +/-2% 0.1A 0.62A 1.7A

330µF 560µF

+5.0Vdig +/-5% 0.1A 3.1A 5.5A

2400µF 10000µF

+12Vdig +/-5% 0.1A 1.0A 1.24A

500µF 1000µF

3.3V +/-5% 0.1A 2.0A 3.0A 4000uF 6000uF

5.0V(stand) +/-5% 0.1A 0.1A 1.0A

Note: RS represent Remote Sense.

4.7.3 Basic Operation
The power supply utilizes 5 converter, 5 synchronous step- down switching

regulator and step-down switching regulator.

4.7.3.1 Pre-converter

Power Factor Correction (PFC) circuit. It uses a Critical Mode Boost
Converter topology switching and using MosFETs as the primary switches.
The output of the PFC Converter is regulated to 385VDC.

4.7.3.2 Main Converter

The converters are like dual-switch half-bridge converters switching at
approximately 88KHz and utilizing the module integrated controller and two
MosFETs as the primary switches. Output is regulated using a post
switching regulation scheme. The output has its own raw voltage provided
on its own separate winding on the transformers. The output is regulated to
24V secondary bus voltage,.

4.7.3.3 House Keeping Power Supply
It is a fly back converter switching at approximately 80 kHz. The bias supply

also provides other voltages for internal housekeeping. The bias supply is
“ON” whenever AC is present. +5VSB is provided from an

step-down

switching regulator

.

4.7.3.4 +5VDIG and 3.3V DC/DC(

Daughter Board)

Dual 2-phase

synchronous step-down switching regulator is used for the

+5Vdig and +3.3V supply.

Theory of Operation 4-17

4-18 Theory of Operation

4.7.3.5 +5VANA and 2.5V DC/DC

(Daughter Board)

Dual 2-phase

synchronous step-down switching regulator is used for the

+5.0Vana and 2.5V supply.

4.7.3.6 +9 and 12V DC/DC

(Daughter Board)

S

tep-down switching regulator is used for the +9.0V supply. Synchronous

step-down switching regulator

is used for the +12V supply.

4.7.3.7 -5V and –12V Forward converter

This converter is used for the –5.0V supply. There is also a linear regulator
which supplies the –12V supply.

4.7.3.8 Filter Circuits

(Daughter Boards)

The Filter circuits are implemented for analog outputs ;+5.0V,+12.0V,-5.0V

and –12.0V.

4.7.4 Connector Assignments
The power supply connectors are arranged as follows:

INLET BOARD

Reference

Supplied BOARD

Connector Pin# Voltage /Function Comment

1CN2 PFC BOARD 5566-2A Total 2 Input AC Line

PFC BOARD
2CN2 INLET BOARD 5566-2A Total 2 Input AC Line

1 385VDC

2CN3 MAIN BOARD 5566-2A

2 Primary Return

1 18.5VDC
2 Primary Return

2CN1 MAIN BOARD 5267-3A

3 Traiac Bias

1 Line

2CN4 MAIN BOARD 5267-2A

2 GND

MAIN BOARD
Primary

1 18.5VDC
2 Primary Return

3CN1 PFC BOARD 5267-3A

3 Triac Bias

1 385VDC

5CN2 PFC BOARD 5566-2A

2 Primary Return

Secondary

Reference

Supplied BOARD

Connector Pin# Voltage /Function Comment

1 24V Bus Voltage CN9 EXT BOARD 5566-2A
2 GND

1 24V To printer
2 N.C

5CN1 EXT BOARD 5267-3A

3 GND

1,2 +5.0V
3,6 GND
4,5 -5.0V

CN2 Main Board 51067

7,8 +2.5V

1 +12.0V
2,4 GND
3 +9.0V

CN3 Main Board 51067

5 -12.0V

Theory of Operation 4-19

4-20 Theory of Operation

1 -12.0V F.B –12.0V
2 +12.0V F.B +12.0V
3 -5.0V F.B –5.0V
4 +5.0V F.B +5..0V
5 LINE Line tiger

Signal

6 BAT EN Battery EN.

CN4 Main Board 5268-07A

7 BAT VS Battery V.S.

1 +12Vdig CN5 Main Board

FAN MOTOR

5568-02A

2 GND

Reference

Supplied
BOARD

Connector Pin# Voltage

/Function

Comment

1,2,11 3.3Vdig
3 GND
4 5.0Vdig
5,7,13 GND
6,19,20 5.0Vdig
8 PWR_OK TTL level
9 +5.0Vstb Standby Power
10 +12.0Vdig
12 -12Vdig
15,16,17 GND
14 PS_ON# <0.8V:ON/>2V:OFF

CN6 UATX-Board 5566-20A

18 -5.0Vdig

1 LINE

CN11 PFC BOARD 5267-02A

2 GND

1 GND
2 REMOTE_ON
3 BAT VS
4 BAT EN
5 Vaux

CN7 EXT Board 5267-06A

6 5Vstd

1 24V External OUT

CN10 EXT Board 5267-02A

2 GND

4.7.5 Output Voltage Adjustment Range
Each output voltage has an adjustment range of the nominal Vset voltage as

specified in the table. The adjustments are clearly labeled and accessible from the
top of the Power Supply. Turning adjustment potentiometers clockwise increases
the absolute value of output voltages.

4.7.6 +5VSB Standby Supply Rail
+5VSB is a standby supply output that is active whenever the AC power is present.

It provides a power source for the processor standby circuits that must remain
operational when the other main DC output rails are in a disabled state. The 5VSB
output is capable of delivering up to 0.5A continuously with the fan not operating.

4.7.7 Control
The following control signals are required.

4.7.7.1 Output Enable OUTPUT-EN/ (active low)
This is an active low signal which comes from the processor board that

turns on (enables) all of the power supply DC outputs.

4.7.7.2 Line Frequency Synchronization Output Signal (LFS)

The LFS signal is safety-isolated from the primary circuits of the power
supply. The LFS signal is a digital signal (TTL levels) that toggles at
each zero-crossing of the AC line input.

4.7.7.3 PWR_OK signal
PWR_OK is a “power good” signal. It is asserted high by the power

supply a minimum of 100ms after all Secondary Outputs are above the
minimum voltage as specified by the lower limit of the regulation band
and the AC line is present. The PWR_OK rise time is <= 10ms. In the
case of AC line disconnection or drop-out, the PWR_OK signal goes low
when at least one of Secondary Outputs drop out of regulation.

Theory of Operation 4-21

4-22 Theory of Operation

4.7.8 Over-Current Protection

All outputs are protected against damage due to overloads or short circuits. Short
circuit current levels for any output, unless specified below, will not exceed 125% of
maximum current for that output.
Each output has independent current limiting, that is the over-current of any of these
outputs will not cause any other output except –5.0V Output. If –5.0V output will
short, -12.0V output reduces output voltage. The over current circuitry is latch type.
Whenever Over-Current protection occur, all Outputs shut down to protect Circuitry
damage. –5V output only have over-current adjustment value(6A) and adjustment
potentiometer.

4.7.9 Over-Temperature Protection
The power supply will shut down before any damage occurs from over-temperature.

This is true independent of the cause of the over-temperature condition (i.e. blocked
power supply cooling fan, excessive ambient temperature, etc.) When the power
supply restart , the power supply must remove AC Line for a few minutes and
remove the cause of the over-temperature condition.

4.7.10 Over-Voltage Protection
Over-voltage protection is required to reduce the likelihood of damage to system

components in the event of a single point fault within the power supply. All outputs
incorporate an over-voltage protection limited to less than 135% of the nominal Vset
values. When the power supply restart , the power supply must remove AC Line for
a few minutes and remove the cause of the over-Voltage condition.

5. Performance Verification

5.1 Introduction

This chapter contains procedures suitable for determining if the WaveSurfer 400
Series of Digital Storage Oscilloscope performs correctly and as warranted. They
check all the characteristics listed in subsection 5.1.1.

In the absence of the computer automated calibration system based on LeCroy
Calibration Software (Calsoft), this manual performance verification procedure can
be followed to establish a traceable calibration. It is the calibrating entities’
responsibility to ensure that all laboratory standards used to perform this procedure
are operating within their specifications and traceable to required standards if a
traceable calibration certificate is to be issued for the WaveSurfer 400 series Digital
Storage Oscilloscope.

5.1.1 List of Tested Characteristics

This subsection lists the characteristics that are tested in terms of quantifiable
performance limits.

• Input Impedance

• Leakage Current

• Peak to Peak noise level

• Positive and Negative DC accuracy

• Positive and Negative Offset

• Bandwidth

• Trigger Accuracy

• Time Base Accuracy

5.1.2 Calibration Cycle

The WaveSurfer 400 series Digital Storage Oscilloscope requires periodic
verification of performance. Under normal use (2,000 hours of use per year) and
environmental conditions, this instruments calibration cycle is 12 months.

Rev. D Sept 2007 Performance Verification 5-1

5-2 Performance Verification Rev. D Sept 2007

5.2 Test Equipment Required

These procedures use external, traceable signal generators, DC precision power
supply and digital multi-meter, to directly check specifications.

Instrument Specifications Recommended
Signal Generator

Radio Frequency

Frequency : .5 MHz to 1 GHz
Frequency Accuracy : 1 PPM

HP 8648B or C or

Fluke 9500
Signal Generator
Audio Frequency

Frequency : 0 to 5 kHz
Amplitude : 8 V peak to peak

HP 33120A

Voltage Generator
DC Power Supply

Range of 0 to 20 V, in
steps of no more than 15 mV

HP 6633A

Power Meter +
Sensor

Accuracy ±1 %

HP437B + 8482A or

equivalent
Digital Multimeter
Volt & Ohm

Voltmeter Accuracy : 0.1 %
Ohmmeter Accuracy : 0.1 %

Keithley 2000, Fluke 9500

or 5820 Oscilloscope

Calibrator
Coaxial Cable, 5 ns

50Ω, BNC, length 100 cm,

Coaxial Cable, 5 ns

50Ω, SMA, length 100 cm,

2 Attenuators, 20 dB

50Ω, BNC, 1 % accuracy

T adapter

50Ω, BNC T adapter

Table 5-1 : Test Equipment

5.2.1 Test Records

The last pages of this chapter contain the WaveSurfer 400 series test records in the
format of tables. Keep them as masters and use a photocopy for each calibration.

5.3 Turn On

If you are not familiar with operating the WaveSurfer 400, refer to the operator's
manual.

 Switch on the power using the power switch.

 Wait for about 20 minutes for the scope to reach a stable operating
temperature:

 To provide for quicker setup of the scope for each test, a CD containing panel

setups has been included with this manual. An external USB CD ROM drive will
need to be connected if you wish to use these. Detailed set up information is
contained in the text and the panel setups are not needed if a CD ROM drive is
not available.

5.4 Input Impedance

Specifications

DC 50Ω ±1.0 %
EXT DC 50Ω ±1.0 %
DC 1MΩ ±1.0%
EXT 1MΩ ±1.0 %
AC 1.2MΩ ±1.0%

The impedance values for 50Ω coupling are measured with a high precision digital
multimeter. The DMM is connected to the DSO in 4 wire configuration (input and sense),
allowing for accurate measurements.

5.4.1 Channel Input Impedance

a. DC 50Ω

 Recall Input Impedance - 50 ohm x1.lss or configure the DSO :

Panel Setups : Recall FROM DEFAULT SETUP
Channels Trace ON Channel 1, Channel 2, Channel 3 & Channel 4
Input Coupling : DC 50Ω on all 4 Channels
Input gain : 20 mV/div. on all 4 Channels
Time base : 50 ηsec/div.
Trigger mode : Auto

Rev. D Sept 2007 Performance Verification 5-3

5-4 Performance Verification Rev. D Sept 2007

 Set the DMM with Ohms and Ohms sense to provide a 4 wire measurement.

 Connect it to Channel 1.

 Measure the input impedance, reverse the meter leads and measure the input

impedance.

 Average these two numbers and record it in Table 2, and compare it to the limits.

 Repeat the above test for all input channels.

 Recall Input Impedance - 50 ohm x10.lss or Set Input gain to 200 mV/div. on all

4 Channels

 Repeat the test for all input channels.

 Record the measurements in Table 2, and compare the test results to the
limits in the test record.

 Recall Input Impedance - 50 ohm x1.lss or Set Input gain to 2 V/div. on all 4

Channels

 Repeat the test for all input channels.

 Record the measurements in Table 2, and compare the test results to the
limits in the test record.

b. DC 1MΩ

 Recall Input Impedance - 1 Mohm DC x1.lss or configure the DSO :

Panel Setups : Recall FROM DEFAULT SETUP
Channels Trace ON Channel 1, Channel 2, Channel 3 & Channel 4
Input Coupling : DC 1MΩ on all 4 Channels
Input gain : 20 mV/div. on all 4 Channels
Time base : 50 ηsec/div.

Trigger mode : Auto

 Set the DMM with Ohms and Ohms sense to provide a 4 wire measurement.

 Connect it to Channel 1.

 Measure the input impedance, reverse the meter leads and measure the input

impedance.

 Average these two numbers and record it in Table 2, and compare it to the limits.

 Repeat the above test for all input channels.

 Recall Input Impedance - 1 Mohm DC x10.lss or Set Input gain to 200 mV/div.

on all 4 Channels

 Repeat the test for all input channels.

 Record the measurements in Table 2, and compare the test results to the
limits in the test record.

 Recall Input Impedance - 1 Mohm DC x1.lss or Set Input gain to 2 V/div. on all

4 Channels

 Repeat the test for all input channels.

 Record the measurements in Table 2, and compare the test results to the
limits in the test record.

Rev. D Sept 2007 Performance Verification 5-5

5-6 Performance Verification Rev. D Sept 2007

c. AC 1MΩ

 Recall Input Impedance - 1 Mohm AC x1.lss or configure the DSO :

Panel Setups : Recall FROM DEFAULT SETUP
Channels Trace ON Channel 1, Channel 2, Channel 3 & Channel 4
Input Coupling : AC 1MΩ on all 4 Channels
Input gain : 20 mV/div. on all 4 Channels
Time base : 50 ηsec/div.
Trigger mode : Auto

 Set the DMM with Ohms and Ohms sense to provide a 4 wire measurement.

 Connect it to Channel 1.

 Measure the input impedance.

 Record the measurements in Table 2, and compare the test results to the
limits in the test record.

 Repeat the above test for all input channels.

5.4.2 External Trigger Input Impedance

a. DC 50Ω

 Recall Input Impedance - 50 ohm ext x1.lss or configure the DSO :

Select Setup trigger

Trigger on : EXT

Impedance : DC 50Ω

 Connect the DMM to External, and measure the input impedance, reverse the

meter leads and measure the input impedance.

 Average these two numbers and record the input impedance in Table 2, and

compare the result to the limit in the test record.

 Recall Input Impedance - 50 ohm ext x10.lss or Set Trigger Source to Ext/10.

 Repeat the test.

 Record the measurements in Table 2, and compare the test results to the
limits in the test record.

Rev. D Sept 2007 Performance Verification 5-7

5-8 Performance Verification Rev. D Sept 2007

b. Ext DC 1MΩ Input Impedance

 Recall Input Impedance - 1 Mohm DC Ext x1.lss or configure the DSO :

Select Setup trigger

Trigger on : EXT

Impedance : DC 1MΩ

 Connect the DMM to External, and measure the input impedance.

 Record the input impedance in Table 2, and compare the result to the limit in the

test record.

 Recall Input Impedance - 1 Mohm DC Ext x10.lss or Set Trigger Source to

Ext/10.

 Repeat the test for all input channels.

 Record the measurements in Table 2, and compare the test results to the
limits in the test record.

5.5 Leakage Current

Specifications

DC 50Ω, EXT DC 50Ω : ±0.5 mV

DC 1MΩ, EXT DC 1MΩ : ±1.0 mV

The leakage current is tested by measuring the voltage across the input channel.

5.5.1 Channel Leakage Current

a. DC 50Ω

 Recall Leakage - 50 ohm x1.lss or configure the DSO :

Panel Setups : Recall FROM DEFAULT SETUP
Channels Trace ON Channel 1, Channel 2, Channel 3 & Channel 4
Input Coupling : DC 50Ω on all 4 Channels

Input gain : 20 mV/div. on all 4 Channels
Trigger mode : Auto

Time base : 50 nsec/div.

Rev. D Sept 2007 Performance Verification 5-9

5-10 Performance Verification Rev. D Sept 2007

 Set the DMM to measure Volts, and connect it to Channel 1.

 Measure the voltage and enter it in Table 3. Compare it to the limits.

 Repeat the test for all input channels.

 Recall Leakage - 50 ohm x10.lss or set Input gain to 200 mV/div. on all 4

Channels

 Repeat the test for all input channels. Record the measurements in Table 3,

and compare the results to the limits in the test record.

 Recall Leakage - 50 ohm x100.lss or set Input gain to 2 V/div. on all 4 Channels

 Repeat the test for all input channels. Record the measurements in Table 3,

and compare the results to the limits in the test record.

b. DC 1MΩ

 Recall Leakage - 1 Mohm x1.lss or configure the DSO :

Panel Setups : Recall FROM DEFAULT SETUP
Channels Trace ON Channel 1, Channel 2, Channel 3 & Channel 4

Input Coupling :

DC 1MΩ on all 4 Channels

Input gain : 20 mV/div. on all 4 Channels
Trigger mode : Auto
Time base : 50 nsec/div.

 Set the DMM to measure Volts, and connect it to Channel 1.

 Measure the voltage and enter it in Table 3. Compare it to the limits.

 Repeat the test for all input channels.

 Recall Leakage - 1 Mohm x10.lss or set Input gain to 200 mV/div. on all 4

Channels

 Repeat the test for all input channels. Record the measurements in Table 3,

and compare the results to the limits in the test record.

 Recall Leakage - 1 Mohm x1.lss or set Input gain to 2 V/div. on all 4 Channels

 Repeat the test for all input channels. Record the measurements in Table 3,

and compare the results to the limits in the test record.

Rev. D Sept 2007 Performance Verification 5-11

5-12 Performance Verification Rev. D Sept 2007

5.5.2 External Trigger Leakage Current

a. DC 50Ω

 Recall Leakage - 50 ohm ext x1.lss or configure the DSO:

Panel Setups : Recall FROM DEFAULT SETUP
Channels Trace OFF Channel 1, Channel 2, Channel 3 & Channel 4

Select Setup trigger
Set Trigger on : EXT

Impedance : DC 50Ω

 Connect the DMM to External.

 Measure the voltage and enter it in Table 3. Compare it to the limits.

 Recall Leakage - 50 ohm ext x10.lss or Set Trigger Source to Ext/10.

 Repeat the test.

 Record the measurements in Table 3, and compare the test results to the
limits in the test record.

b. DC 1MΩ

 Recall Leakage – 1 Mohm ext x1.lss or configure the DSO as shown in 5.5.2.a
and make the following changes:

Select Setup trigger
Set Trigger on : EXT

External : DC 1MΩ

 Connect the DMM to External.

 Measure the voltage and enter it in Table 3. Compare it to the limits.

 Recall Leakage - 1 Mohm ext x10.lss or Set Trigger Source to Ext/10.

 Repeat the test.

 Record the measurements in Table 3, and compare the test results to the
limits in the test record.

Rev. D Sept 2007 Performance Verification 5-13

5-14 Performance Verification Rev. D Sept 2007

5.6 Peak-Peak Noise Level

Description

Noise tests with open inputs are executed on all channels with 1 MΩ input coupling, 0
mV offset, at a gain setting of 2 mV/div and 10 mV/div. The scope parameters functions
are used to measure the Peak to Peak amplitude of the noise.

Specifications

1.6 mV Peak-Peak at 2 mV/div.

3.8 mV Peak-Peak at 10 mV/div.

With no signal connected to the inputs

 Recall Noise - 2mv.lss or configure the DSO :

Panel Setups : Recall FROM DEFAULT SETUP
Channels Trace ON Channel 1, Channel 2, Channel 3 & Channel 4
Input Coupling : DC 1M0Ω on all 4 Channels
Input gain : 2 mV/div. on all 4 Channels
Input offset : 0.0 mV on all 4 Channels
Trigger setup : Edge
Trigger on : Line
Trigger Mode : Auto

Time base : 20 µsec/div.
Press : Measure, Measure Setup

Statistics : On

P1 : Mean C1
P2 : Mean C2
P3 : Mean C3

P4 : Mean C4

 Press Clear Sweeps.

 Measure for at least 50 sweeps, and then press Stop to halt the acquisition.

 Record the four mean parameter values in Table 4, and compare the test
results to the limits in the test record.

 Recall Noise - 10mv.lss or set Input gain to 10 mV/div. on all 4 Channels

 Record the measurements (mean of 1,2,3,4) in Table 4, and compare the
results to the limits in the test record.

Rev. D Sept 2007 Performance Verification 5-15

5-16 Performance Verification Rev. D Sept 2007

5.7 DC Accuracy

Specification

≤ ±1.5 % of reading + 1.0% of FS + 1mV full scale with 0 mV offset.

Description

This test measures the DC Accuracy within the gain range specified.
It requires a DC source with a voltage range of 0 V to 6 V adjustable in steps of no
more than 15 mV, and a calibrated DMM that can measure voltage to 0.1 %.

Measurements are made using voltage values applied by the external voltage

reference source, measured by the DMM, and in the oscilloscope using the

parameters Mean. For each known input voltage, the deviation is checked against

the tolerance.

5.7.1 Positive DC Accuracy

Procedure

 Recall DC accuracy - 50 ohm 2mv.lss or configure the DSO :

Panel Setups : Recall FROM DEFAULT SETUP
Channels Trace ON Channel 1, Channel 2, Channel 3 & Channel 4
Input Coupling : DC 50Ω or DC 1MΩ (see Table 5) on all 4 Ch
Input offset : 0.0 mV on all 4 Channels
Input gain : from 1mV/div to 2 V/div (10V/div 1MΩ). (see Table 5)

C1 Averaging : 10 sweeps
C2 Averaging : 10 sweeps
C3 Averaging : 10 sweeps
C4 Averaging : 10 sweeps

Trigger : Edge Trigger
Trigger on : Line
Mode : Auto
Time base : 1 µsec/div.

Change parameters
P1 : Measure mean of C1
P2 : Measure mean of C2
P3 : Measure mean of C3
P4 : Measure mean of C4

 Connect the test equipment as shown in Figure 5-2.

DC Power SupplyDMM

50

Figure 5-2 : DC Accuracy Equipment Setup

 For each DSO Volts/div, set the output of the external DC voltage reference

source as shown in Table 5, column PS output.

1) Connect the DMM and record the voltage reading in Table 5, column DMM.

2) Disconnect the DMM from the BNC T connector.

3) Press Clear Sweeps

4) After 100 sweeps, read off the DSO mean parameter, and record the
measurement in Table 5, column Mean.

 For each DC voltage applied to the DSO input, repeat parts 1), 2), 3) and 4).

 Calculate the Difference ( ∆ ) by subtracting the DMM voltage reading from the
DSO mean voltage reading. Record the test result in Table 5, and
compare the Difference ( ∆ ) to the corresponding limit in the test record.

 Repeat step 5.7.1.a. for the other channels, substituting channel controls and

Input connector.

Rev. D Sept 2007 Performance Verification 5-17

5-18 Performance Verification Rev. D Sept 2007

5.7.2 Negative DC Accuracy

 Recall DC accuracy - 50 ohm 2mv.lss or configure the DSO as shown in 5.7.1.

 Connect the test equipment as shown in Figure 5-2.

 For each DSO Volts/div, set the output of the external DC voltage reference

source as shown in Table 6, column PS output. (if a banana-BNC adapter is

being used it can simply be turned to get the opposite polarity)

1) Connect the DMM and record the voltage reading in Table 6, column DMM.

2) Disconnect the DMM from the BNC T connector.

3) Press Clear Sweeps

4) After 100 sweeps, read off the DSO mean parameter, and record the
measurement in Table 6, column Mean.

 For each DC voltage applied to the DSO input, repeat parts 1), 2), 3) and 4).

 Calculate the Difference ( ∆ ) by subtracting the DMM voltage reading from the
DSO mean voltage reading. Record the test result in Table 6, and
compare the Difference ( ∆ ) to the corresponding limit in the test record.

 Repeat step 5.7.2. for the other channels, substituting channel controls and
input connector.

Rev. D Sept 2007 Performance Verification 5-19

5-20 Performance Verification Rev. D Sept 2007

5.8 Offset Accuracy

Specifications

±(1.0% of offset + .5% of FS + 1mv)

Description

The offset test is done at 50 mV/div, with a signal of ±0.750 Volt cancelled by an
offset of the opposite polarity.

5.8.1 Positive Offset Accuracy

Procedure

 Recall Offset - Positive.lss or configure the DSO:

Panel Setups : Recall FROM DEFAULT SETUP
Channels Trace ON Channel 1, Channel 2, Channel 3 & Channel 4
Input Coupling : DC 50Ω on all 4 Channels
Input gain : 50mV/div on all 4 Channels
Input offset : +0.750 Volt on all 4 Channels

C1 Averaging : 10 sweeps
C2 Averaging : 10 sweeps
C3 Averaging : 10 sweeps
C4 Averaging : 10 sweeps

Trigger setup : Edge
Trigger on : Line
Mode : Auto
Time base : 1 µsec/div.
Statistics : on
Change parameters
P1 : Measure mean of C1
P2 : Measure mean of C2
P3 : Measure mean of C3
P4 : Measure mean of C4

 Connect the test equipment as shown in Figure 5-2.

 Set the output of the external DC voltage reference source until the DVM

measures −0.750 Volt.

1) Verify that the displayed trace A : Average (1) is on the screen, near the center

horizontal graticule line. If the trace is not visible, modify the DC voltage

reference source output until the trace is within ± 2 divisions of center.

2) Connect the DMM and record the voltage reading in Table 7, column DMM.

3) Disconnect the DMM from the BNC T connector.

4) Press Clear Sweeps

5) After 100 sweeps, Read off the DSO Mean parameter voltage, and record the

measurement in Table 7, column Mean.

 Repeat the test for the other channels, substituting channel controls and input
connector. Record the measurements in Table 7.

 Calculate the Difference ( ∆ ) by subtracting the DMM voltage reading from the

DSO mean voltage reading.

 Record the test result in Table 7, and compare the Difference ( ∆ ) to the

corresponding limit in the test record.

Rev. D Sept 2007 Performance Verification 5-21

5-22 Performance Verification Rev. D Sept 2007

5.8.2 Negative Offset Accuracy

Procedure

 Recall Offset - Negative.lss or configure the DSO as shown in 5.8.1 and for

each channel make the following change :

Input offset : −0.750 Volt on all 4 Channels

 Connect the test equipment as shown in Figure 5-2.

 Set the output of the external DC voltage reference source until the DMM

measures +0.750 Volt.

1) Verify that the displayed trace A : Average (1) is on the screen, near the center

horizontal graticule line. If the trace is not visible, modify the DC voltage

reference source output until the trace is within ± 2 divisions of center.

2) Connect the DMM and record the voltage reading in Table 8, column DMM.

3) Disconnect the DMM from the BNC T connector.

4) Press Clear Sweeps

5) After 100 sweeps, Read off the DSO Mean parameter voltage, and record the

measurement in Table 8, column Mean.

 Repeat the test for the other channels, substituting channel controls and input
connector. Record the measurements in Table 8.

 Calculate the Difference ( ∆ ) by subtracting the DMM voltage reading from the
DSO mean voltage reading. Record the test result in Table 8, and
compare the Difference ( ∆ ) to the corresponding limit in the test record.

5.9 Bandwidth

5.9.1 Description

The purpose of this test is to ensure that the entire system has a bandwidth of at
least 500 MHz for a WaveSurfer 45x, 350 MHz for a WaveSurfer 43x and 200 MHz
for a WaveSurfer 42x. An external source is used as the reference to provide a
signal where amplitude and frequency are well controlled.
The amplitude of the generator and cable as a function of frequency and power is
calibrated using a HP8482A power sensor, and HP437B power meter or
equivalent. Note: If a leveled generator is used then the corrections needed by
using the power meter may not be necessary.

Specifications

WaveSurfer 45x
50Ω : DC to at least 500 MHz (-3 dB)

WaveSurfer 43x
50Ω : DC to at least 350 MHz (-3 dB)

WaveSurfer 42x
50Ω : DC to at least 200 MHz (-3 dB)

Rev. D Sept 2007 Performance Verification 5-23

5-24 Performance Verification Rev. D Sept 2007

 Recall Bandwidth - CH1 10mv.lss or configure the DSO:

Panel Setups : Recall FROM DEFAULT SETUP
Channels Trace ON Channel 1
Input Coupling : DC 50Ω on all 4 Channels
Input gain : 10 mV/div on all 4 Channels
Input offset : 0 mV on all 4 Channels
Trigger setup : Edge
Trigger on : Line
Mode : Auto
Time base : 50 ηsec/div.
Change parameters
P1 : PK-PK of C1
P2 : Freq of C1

 Connect the HP8482A power sensor to the power meter.

 Zero and calibrate the HP8482A power sensor using the power meter Power
Ref output.

 Connect a BNC adapter to the HP8482A power sensor.

 Connect a 50Ω SMA cable to the RF output of the HP8648B

generator and then through the necessary adapters to the power sensor. It is
very important that the same cable/generator be used throughout this BW
procedure and that the SMA connectors are torqued at all their mating locations.

Power Sensor

Power Meter

Power Ref

Output

Sensor Input

Sine Wave

Generator

Figure 5-3 : Power Meter Equipment Setup

 Set the generator frequency to 10 MHz

 Set the generator amplitude to measure 8 µW on the power meter.

 Read the displayed generator output amplitude, and record it in the third

column of Table 9.

 Repeat the above measurement for the model under test either, 200.1 350.1 MHz

& 500.1 MHz. Record the generator output amplitude readout in the third column

of Table 9.

 Disconnect the RF output of the HP8648B generator from the power

sensor.

 Connect the RF output of the HP8648B generator through the same cable that

was calibrated in the previous step into Channel 1 and connect any attenuators
as listed in the table.

Sine Wave

Generator

Figure 5-4 : 50Ω Bandwidth Equipment Setup

 Set the generator frequency to 10 MHz.

 From the generator, apply the recorded generator signal amplitude to
Channel 1.

 Measure the value of pkpk(1) in Table 9.

Rev. D Sept 2007 Performance Verification 5-25

5-26 Performance Verification Rev. D Sept 2007

 Increase the frequency of the generator to the maximum input frequency for that

model, adjusting the amplitude so that the power remains constant and measure
the value of pk-pk. Record in Table 9.

 Repeat the above 3 steps for Channel 2, (Bandwidth – CH2 10mv.lss s)

Channel 3 (Bandwidth – CH3 10mv.lss) & Channel 4 (Bandwidth – CH4
10mv.lss) substituting channel controls and input connector. Record the
measurements in Table 9.

 Calculate the ratio to 10 MHz for each channel, pk-pk

500.1/pk-pk10 (for WaveSurfer

45X)

, pk-pk350.1/pk-pk10 (for WaveSurfer 43X), or pk-pk200.1/pk-pk10 (for

WaveSurfer 42X)

and compare the results to the limits in the test record.

 Repeat the above steps for V/div setting of 50 mV, 100 mV, and 500 mV, using

the appropriate Bandwidth - CHx vvmv.lss (where x is channel and yy is V/div
setting) panel setup and recording your results in Tables 10 through 12. Use the
power setting and attenuators as shown in the tables.

Rev. D Sept 2007 Performance Verification 5-27

5-28 Performance Verification Rev. D Sept 2007

5.10 Trigger Level

Specifications

+/- (3% of Trigger Level + 20% of sensitivity)

5.10.1 Description

The trigger capabilities are tested for several cases of the standard edge trigger:

 Channel (internal), and External Trigger sources
 Three DC levels: −2.5, 0, +2.5 major screen divisions
 Positive and negative slopes

5.10.2 Channel Trigger at 0 Division Threshold

Recall Trigger - CH1 0 div pos slope.lss or configure the DSO:

Panel Setups : Recall FROM DEFAULT SETUP
Channels Trace ON Channel 1, Channel 2, Channel 3 & Channel 4
Input Coupling : DC 50Ω on all 4 Channels
Input gain : 100 mV/div. on all 4 Channels
Input offset : 0 mV on all 4 Channels (use show status to verify)

Trigger setup : Edge
Trigger on : C1
Slope : Pos
Mode : Auto
Set Trigger level : DC 0.0 mV
Pre-Trigger Delay : 50 %

Time base : 200 ηsec/div.
C1 Pre-Processing: Averaging 10 sweeps
C2 Pre-Processing: Averaging 10 sweeps
C3 Pre-Processing: Averaging 10 sweeps
C4 Pre-Processing: Averaging 10 sweeps

Measure P1 : mean C1
Measure P2 : mean C2
Measure P3 : mean C3
Measure P4 : mean C4

Gate Start : 4.99 div
Gate Stop : 5.01 div

 Set the output of the sine wave generator to 1 MHz.

 Connect the output of the generator to Channel 1 through a 50 Ohm coaxial cable

as shown in Figure 5-5 and adjust the sine wave output amplitude to get 90% of

full scale.

Rev. D Sept 2007 Performance Verification 5-29

5-30 Performance Verification Rev. D Sept 2007

Sine Wave

Generator

Figure 5-5 Channel Trigger Equipment Setup

 Press Clear Sweeps,

 Acquire 10 sweeps and record in Table 13 the level readout displayed below
100 mV in the icon 1, at top left.

 Compare the test results to the corresponding limit in the test record.

 Set Trigger Slope 1 : Neg

 Acquire 10 sweeps and record in Table 13 the level readout displayed below

100 mV in the icon 1, at top left.

 Set trigger to channels 2, 3 and 4 and for both POS and NEG slope, move input

signal to appropriate channel and compare the test results to the corresponding
limit in the test record.

5.10.3 Channel Trigger at +2.5 Divisions Threshold

 Recall Trigger - CH1 +2.5 div pos slope.lss or configure the DSO as shown in

5.10.2 and for each Channel make the following change :

Set Trigger level : DC +250 mV

Trigger slope : POS

 Connect the output of the generator to Channel 1 through a 50 Ohm coaxial

cable.

 Press Clear Sweeps,

 Acquire 10 sweeps and record in Table 13 the level readout displayed below
100 mV in the icon 1, at top left.

 Compare the test results to the corresponding limit in the test record.

Rev. D Sept 2007 Performance Verification 5-31

5-32 Performance Verification Rev. D Sept 2007

 Set Trigger Slope 1 : Neg

 Acquire 10 sweeps and record in Table 13 the level readout displayed below 100

mV in the icon 1, at top left.

 Set trigger to channels 2, 3 and 4 and for both POS and NEG slope move input

signal to appropriate channel and compare the test results to the corresponding
limit in the test record.

5.10.4 Channel Trigger at −2.5 Divisions Threshold

 Recall Trigger - CH1 -2.5 div pos slope.lss or configure the DSO as shown in

5.10.2 and for each channel make the following change :

Set Trigger level : DC −250 mV

 Connect the output of the generator to Channel 1 through a 50 Ohm coaxial
cable.

 Press Clear Sweeps,

 Acquire 10 sweeps and record in Table 13 the level readout displayed below
100 mV in the icon 1, at top left.

 Compare the test results to the corresponding limit in the test record.

 Set Trigger Slope 1 : Neg

 Acquire 10 sweeps and record in Table 13 the level readout displayed below 100

mV in the icon 1, at top left.

 Set trigger to channels 2, 3 and 4 and for both POS and NEG slope move input

signal to appropriate channel and compare the test results to the corresponding
limit in the test record.

Rev. D Sept 2007 Performance Verification 5-33

5-34 Performance Verification Rev. D Sept 2007

5.11 Time Base Accuracy

5.11.1 Description

An external sine wave generator of 10.0 MHz with frequency accuracy better than 1
PPM is used.

Specifications

Clock : accuracy : ≤ ±0.001 % or ≤ ±10 PPM

5.11.2 Clock Verification Procedure

 Recall Timebase Accuracy.lss or configure the DSO

Panel Setups : Recall FROM DEFAULT SETUP
Channels trace ON Channel 1
Input gain : .1 V/div.
Input offset : 0 mV
Trigger setup : Edge
Trigger on : C1
Slope 1 : Pos

Level 1 : 0 mV
Trigger mode : Auto

Delay : 50 %
Time base : 100 msec/div.

Measure : Parameters
P1 : Frequency of C1

 Connect the RF output of the HP8648B generator through a 50 Ohm
coaxial cable into Channel 1.

 Set the generator frequency to 10.0 MHz.

 Adjust the generator output amplitude to get 6 divisions peak to peak.

 Read of the frequency parameter (to 2 decimal places) and record the value in

Table 14.

 Verify that the error is less than 100 Hz.

Rev. D Sept 2007 Performance Verification 5-35

5-36 Performance Verification Rev. D Sept 2007

This page intentionally left blank

WaveSurfer 400 Series Test Record

LeCroy Digital Storage Oscilloscope

Performance Certificate

WaveSurfer 400 Manual Performance Test Procedure Version D – Sept 2007

Model Serial Number Customer

Software Version

Inspection Date Next Due

Temperature Humidity %

Tested By Report Number

Place of Inspection

Condition found Condition Left

Approved By

Test Equipment Used

Instrument Model S/N Cal Due Date

Signal Generator
Radio Frequency

Signal Generator
Audio Frequency

Voltage Generator
DC Power Supply

Digital Multimeter

Power Meter

Power Senser

Traceable to

Table 1: WaveSurfer Test Report

Rev D Sept 2007 1 of 10

This page intentionally left blank

Rev D Sept 2007 2 of 10

WaveSurfer 400 Series Test Record

Coupling Volts/div. Measured

Channel 1

Impedance

Ω, MΩ

Measured

Channel 2

Impedance

Ω, MΩ

Measured

Channel 3

Impedance

Ω, MΩ

Measured
Channel 4

Impedance

Ω, MΩ

Measured

External

Impedance

Ω, MΩ

Lower

Limit

Ω, MΩ

Upper

Limit

Ω, MΩ

DC 1MΩ

20 mV/div

0.990 MΩ 1.010 MΩ

DC 1MΩ

200 mV/div

0.990 MΩ 1.010 MΩ

DC 1MΩ

2 V/div

0.990 MΩ 1.010 MΩ

AC 1MΩ

20 mV/div

1.188 MΩ 1.212 MΩ

DC 50Ω

20 mV/div

49.5 Ω 50.5 Ω

DC 50Ω

200 mV/div

49.5 Ω 50.5 Ω

DC 50Ω

2 V/div

49.5 Ω 50.5 Ω

Ext DC 50Ω

49.5 Ω 50.5 Ω

Ext/10 DC 50Ω

49.5 Ω 50.5 Ω

Ext DC 1MΩ

0.990 MΩ 1.010 MΩ

Ext/10 DC 1MΩ

0.990 MΩ 1.010 MΩ

Table 2: Impedance Test Record

Coupling Volts/div. Measured

Channel 1

Leakage

mV

Measured

Channel 2

Leakage

mV

Measured

Channel 3

Leakage

mV

Measured
Channel 4

Leakage

mV

Measured

External
Leakage

mV

Lower

Limit

mV

Upper

Limit

mV

DC 1MΩ

20 mV/div

−1

+1

DC 1MΩ

200 mV/div

−1

+1

DC 1MΩ

2 V/div

−1

+1

DC 50Ω

20 mV/div

−0.5

+0.5

DC 50Ω

200 mV/div

−0.5

+0.5

DC 50Ω

2 V/div

−0.5

+0.5

Ext DC 50Ω

−0.5

+0.5

Ext/10 DC 50Ω

−0.5

+0.5

Ext DC 1MΩ

−1

+1

Ext/10 DC 1MΩ

−1

+1

Table 3: Leakage Voltage Test Record

Rev D Sept 2007 3 of 10

WaveSurfer 400 Series Test Record

Coupling V/Div. Measured

pkpk - mean

Channel 1

mV

Measured

pkpk - mean

Channel 2

mV

Measured

pkpk - mean

Channel 3

mV

Measured

pkpk - mean

Channel 4

mV

Limits

pk-pk

mV

DC 1MΩ

2 mV 1.6

DC 1MΩ

10 mV 3.8

Table 4: Peak to Peak Noise Test Record

(Record the mean value)

Rev D Sept 2007 4 of 10

WaveSurfer 400 Series Test Record

Volts

/div.

P S Cpl Measured Channel 1

V & mV

Measured Channel 2

V & mV

Measured Channel 3

V & mV

Measured Channel 4

V & mV

Limits

V

DMM

Mean

1

(A)

∆ 1

Mean−

DMM

DMM

2

Mean

(B)

∆ 2

Mean−

DMM

DMM

3

Mean

(C)

∆ 3

Mean−

DMM

DMM

4

Mean

(D)

∆ 4

Mean−

DMM

mV

2 mV +6m 50Ω

±1.25

5 mV +15m 50Ω

±1.625

10 mV +30m 50Ω

±2.25

.1 V +0.3 50Ω

±13.5

1 V +3.0 50Ω

±126

2 V +6.0 1MΩ

±251

Table 5: Positive DC Accuracy Test Record

Volts

/div.

P S Cpl Measured Channel 1

V & mV

Measured Channel 2

V & mV

Measured Channel 3

V & mV

Measured Channel 4

V & mV

Limits

V

DMM

Mean

1

(A)

∆ 1

Mean−

DMM

DMM

2

Mean

(B)

∆ 2

Mean−

DMM

DMM

3

Mean

(C)

∆ 3

Mean−

DMM

DMM

4

Mean

(D)

∆ 4

Mean−

DMM

mV

2 mV -6m 50Ω

±1.25

5 mV -15m 50Ω

±1.625

10 mV -30m 50Ω

±2.25

.1 V -0.3 50Ω

±13.5

1 V -3.0 50Ω

±126

2 V -6.0 1MΩ

±251

Table 6: Negative DC Accuracy Test Record

Rev D Sept 2007 5 of 10

WaveSurfer 400 Series Test Record

Measured Channel 1

V & mV

Measured Channel 2

V & mV

Measured Channel 3

V & mV

Measured Channel 4

V & mV

Limits

Volt
/div.

Coupling

DC

DSO

Offset

V

P S

Output

V

DMM

1

Mean

(A)

∆ 1

Mean−

DMM

DMM

2

Mean

(B)

∆ 2

Mean−

DMM

DMM

3

Mean

(C)

∆ 3

Mean−

DMM

DMM

4

Mean

(D)

∆ 4

Mean−

DMM

mV

50mV

50 Ω

+.750

−.750

±10.5

Table 7: Positive 50Ω Offset Test Record

Measured Channel 1

V & mV

Measured Channel 2

V & mV

Measured Channel 3

V & mV

Measured Channel 4

V & mV

Limits

Volt
/div.

Couplin

g

DC

DSO

Offset

V

P S

Output

V

DMM

1

Mean

(A)

∆ 1

Mean−

DMM

DMM

2

Mean

(B)

∆ 2

Mean−

DMM

DMM

3

Mean

(C)

∆ 3

Mean−

DMM

DMM

4

Mean

(D)

∆ 4

Mean−

DMM

mV

50mV

50 Ω

+.750

−.750

±10.5

Table 8: Negative 50Ω Offset Test Record

Rev D Sept 2007 6 of 10

WaveSurfer 400 Series Test Record

Frequency Measured

Power

Generator
Amplitude

Measured

Channel 1

Measured

Channel 2

Measured
Channel 3

Measured
Channel 4

Lower

Limit

MHz

µW

mV

pk-pk(1)

mV

Ratio(1)

to 10

pk-pk (2)

mV

Ratio(2)

to 10

pk-pk(3)

mV

Ratio(3)

to 10

pk-pk(4)

mV

Ratio(4)

to 10

10

8.0

N/A

N/A

N/A

N/A N/A

200.1

(WS 42X)

8.0 0.707

350.1

(WS 43X)

8.0 0.707

500.1

(WS 45X)

8.0 0.707

Table 9: DC 50Ω, 10 mV/div. Bandwidth Test Record

Frequency Measured

Power

Generator
Amplitude

Measured

Channel 1

Measured

Channel 2

Measured
Channel 3

Measured
Channel 4

Lower

Limit

MHz

mW

mV

pk-pk(1)

mV

Ratio(1)

to 10

pk-pk(2)

mV

Ratio(2)

to 10

pk-pk(3)

mV

Ratio(3)

to 10

pk-pk(4)

mV

Ratio(4)

to 10

10

0.4

N/A

N/A

N/A

N/A N/A

200.1

(WS 42X)

0.4 0.707

350.1

(WS 43X)

0.4 0.707

500.1

(WS 45X)

0.4 0.707

Table 10: DC 50Ω, 50 mV/div. Bandwidth Test Record

Rev D Sept 2007 7 of 10

WaveSurfer 400 Series Test Record

Frequency Measured

Power

Generator
Amplitude

Measured

Channel 1

Measured

Channel 2

Measured
Channel 3

Measured
Channel 4

Lower

Limit

MHz

mW

mV

pk-pk(1)

mV

Ratio(1

)

to 10

pk-pk(2)

mV

Ratio(2)

to 10

pk-pk(3)

mV

Ratio(3)

to 10

pk-pk(4)

mV

Ratio(4)

to 10

10

0.8

N/A

N/A

N/A

N/A N/A

200.1

(WS 42X)

0.8 0.707

350.1

(WS 43X)

0.8 0.707

500.1

(WS 45X)

0.8 0.707

Table 11: DC 50Ω, 100 mV/div. Bandwidth Test Record

Frequency Measured

Power

Generator
Amplitude

Measured

Channel 1

Measured

Channel 2

Measured
Channel 3

Measured
Channel 4

Lower

Limit

MHz

mW

mV

pk-pk(1)

mV

Ratio(1

)

to 10

pk-pk(2)

mV

Ratio(2)

to 10

pk-pk(3)

mV

Ratio(3)

to 10

pk-pk(4)

mV

Ratio(4)

to 10

10

20.0

N/A

N/A

N/A

N/A N/A

200.1

(WS 42X)

20.0 0.707

350.1

(WS 43X)

20.0 0.707

500.1

(WS 45X)

20.0 0.707

Table 12: DC 50Ω, 500 mV/div. Bandwidth Test Record

Rev D Sept 2007 8 of 10

WaveSurfer 400 Series Test Record

Trigger

Level

Trigger

Slope

Channel 1 Channel 2 Channel 3 Channel 4 Lower

Limit

Upper

Limit

mV

Measured

DC

Trigger

Level (1)

mV

Measured

DC

Trigger

Level (2)

mV

Measured

DC

Trigger

Level (3)

mV

Measured

DC

Trigger

Level (4)

mV

mV

mV

0 Pos

−27.5

+27.5

0 Neg

−27.5

+27.5
+250 Pos +222.5 +277.5
+250 Neg +222.5 +277.5

−250

Pos -277.5 -222.5

−250

Neg -277.5 -222.5

Table 13: Channel DC Trigger Test Record

Generator
Frequency

MHz

Freq.

(Hz)

Lower

Limit

Upper

Limit

10.0 -100 +100

Table 14: Time Base Test Record

Rev D Sept 2007 9 of 10

WaveSurfer 400 Series Test Record

This page intentionally left blank

Rev D Sept 2007 10 of 10

Maintenance 6-1

6. Maintenance

6.1 Introduction

This section contains information necessary to disassemble, assemble, maintain,
calibrate and troubleshoot the LeCroy WaveSurfer 400.

6.1.1 Safety Precautions

The

symbol used in this manual indicates dangers that could result in

personal injury.

The

symbol used in this manual identifies conditions or practices that could

damage the instrument.

The following servicing instructions are for use by qualified personnel only.
Do not perform any servicing other than contained in service instructions. Refer to
procedures prior to performing any service.

Exercise extreme safety when testing high energy power circuits. Always turn
the power OFF, disconnect the power cord and discharge all capacitors before
disassembling the instrument.

6.1.2 Anti-static Precautions

Any static charge that builds on your person or clothing may be sufficient to

destroy CMOS components, integrated circuits, Gate array’s..........etc.

In order to avoid possible damage, the usual precautions against static electricity are
required.

• Handle the boards in anti-static boxes or containers with foam specially designed

to prevent static build-up.

• Ground yourself with a suitable wrist strap.

• Disassemble the instrument at a properly grounded work station equipped with

anti-static mat.

• When handling the boards, do not touch the pins.

• Stock the boards in anti-static bags.

6.3 Software Update Procedure

6-2 Maintenance

6.3.1 Installing New X-Stream DSO Application Software

In order to load new X-Stream DSO software the system must be capable of booting
up to the Windows desktop.

• If the XStream application is running, exit it through the File, Exit menu option.

• Connect an external USB-CD ROM or USB Memory Stick containing the version

to be installed into the CD ROM drive.

• From the windows desktop, select My Computer, then select the storage device.

• Launch XStreamDSOInstallerx.x.x.x.exe (where x.x.x.x is the version number)

application.

• Press Next, You will be prompted to read and accept the software license

agreement.

6.3.2 Software End User License Agreement

END-USER LICENSE AGREEMENT FOR LECROY

®

X-STREAM™ SOFTWARE

IMPORTANT-READ CAREFULLY: THIS END-USER LICENSE AGREEMENT (“EULA”) IS A LEGAL AGREEMENT
BETWEEN THE INDIVIDUAL OR ENTITY LICENSING THE SOFTWARE PRODUCT (“YOU” OR “YOUR”) AND LECROY
CORPORATION (“LECROY”) FOR THE SOFTWARE PRODUCT(S) ACCOMPANYING THIS EULA, WHICH INCLUDE(S):
COMPUTER PROGRAMS; ANY “ONLINE” OR ELECTRONIC DOCUMENTATION AND PRINTED MATERIALS
PROVIDED BY LECROY HEREWITH (“DOCUMENTATION”); ASSOCIATED MEDIA; AND ANY UPDATES (AS DEFINED
BELOW) (COLLECTIVELY, THE “SOFTWARE PRODUCT”). BY USING AN INSTRUMENT TOGETHER WITH OR
CONTAINING THE SOFTWARE PRODUCT, OR BY INSTALLING, COPYING, OR OTHERWISE USING THE SOFTWARE
PRODUCT, IN WHOLE OR IN PART, YOU AGREE TO BE BOUND BY THE TERMS OF THIS EULA. IF YOU DO NOT
AGREE TO THE TERMS OF THIS EULA, DO NOT INSTALL, COPY, OR OTHERWISE USE THE SOFTWARE PRODUCT;
YOU MAY RETURN THE SOFTWARE PRODUCT TO YOUR PLACE OF PURCHASE FOR A FULL REFUND. IN
ADDITION, BY INSTALLING, COPYING, OR OTHERWISE USING ANY MODIFICATIONS, ENHANCEMENTS, NEW
VERSIONS, BUG FIXES, OR OTHER COMPONENTS OF THE SOFTWARE PRODUCT THAT LECROY PROVIDES TO
YOU SEPARATELY AS PART OF THE SOFTWARE PRODUCT (“UPDATES”), YOU AGREE TO BE BOUND BY ANY
ADDITIONAL LICENSE TERMS THAT ACCOMPANY SUCH UPDATES. IF YOU DO NOT AGREE TO SUCH
ADDITIONAL LICENSE TERMS, YOU MAY NOT INSTALL, COPY, OR OTHERWISE USE SUCH UPDATES.

THE PARTIES CONFIRM THAT THIS AGREEMENT AND ALL RELATED DOCUMENTATION ARE AND WILL BE
DRAFTED IN ENGLISH. LES PARTIES AUX PRÉSENTÉS CONFIRMENT LEUR VOLONTÉ QUE CETTE CONVENTION
DE MÊME QUE TOUS LES DOCUMENTS Y COMPRIS TOUT AVIS QUI S’Y RATTACHÉ, SOIENT REDIGÉS EN LANGUE
ANGLAISE.

1. GRANT OF LICENSE.

1.1

License Grant. Subject to the terms and conditions of this EULA and payment of all applicable fees, LeCroy grants to you a
nonexclusive, nontransferable license (the “License”) to: (a) operate the Software Product as provided or installed, in object code form, for
your own internal business purposes, (i) for use in or with an instrument provided or manufactured by LeCroy (an “Instrument”), (ii) for
testing your software product(s) (to be used solely by you) that are designed to operate in conjunction with an Instrument (“Your
Software”), and (iii) make one copy for archival and back-up purposes; (b) make and use copies of the Documentation; provided that such
copies will be used only in connection with your licensed use of the Software Product, and such copies may not be republished or
distributed (either in hard copy or electronic form) to any third party; and (c) copy, modify, enhance and prepare derivative works
(“Derivatives”) of the source code version of those portions of the Software Product set forth in and identified in the Documentation as
“Samples” (“Sample Code”) for the sole purposes of designing, developing, and testing Your Software. If you are an entity, only one
designated individual within your organization, as designated by you, may exercise the License; provided that additional individuals within
your organization may assist with respect to reproducing and distributing Sample Code as permitted under Section 1.1(c)(ii). LeCroy
reserves all rights not expressly granted to you. No license is granted hereunder for any use other than that specified herein, and no license
is granted for any use in combination or in connection with other products or services (other than Instruments and Your Software) without
the express prior written consent of LeCroy. The Software Product is licensed as a single product. Its component parts may not be separated
for use by more than one user. This EULA does not grant you any rights in connection with any trademarks or service marks of LeCroy.
The Software Product is protected by copyright laws and international copyright treaties, as well as other intellectual property laws and
treaties. The Software Product is licensed, not sold. The terms of this printed, paper EULA supersede the terms of any on-screen license
agreement found within the Software Product.

1.2

Upgrades. If the Software Product is labeled as an “upgrade,” (or other similar designation) the License will not take effect,
and you will have no right to use or access the Software Product unless you are properly licensed to use a product identified by LeCroy as
being eligible for the upgrade (“Underlying Product”). A Software Product labeled as an “upgrade” replaces and/or supplements the
Underlying Product. You may use the resulting upgraded product only in accordance with the terms of this EULA. If the Software Product
is an upgrade of a component of a package of software programs that you licensed as a single product, the Software Product may be used
and transferred only as part of that single product package and may not be separated for use on more than one computer.

1.3.

Limitations. Except as specifically permitted in this EULA, you will not directly or indirectly (a) use any Confidential
Information to create any software or documentation that is similar to any of the Software Product or Documentation; (b) encumber,
transfer, rent, lease, time-share or use the Software Product in any service bureau arrangement; (c) copy (except for archival purposes),
distribute, manufacture, adapt, create derivative works of, translate, localize, port or otherwise modify the Software Product or the
Documentation; (d) permit access to the Software Product by any party developing, marketing or planning to develop or market any
product having functionality similar to or competitive with the Software Product; (e) publish benchmark results relating to the Software
Product, nor disclose Software Product features, errors or bugs to third parties; or (f) permit any third party to engage in any of the acts
proscribed in clauses (a) through (e). In jurisdictions in which transfer is permitted, notwithstanding the foregoing prohibition, transfers
will only be effective if you transfer a copy of this EULA, as well as all copies of the Software Product, whereupon your right to use the
Software product will terminate. Except as described in this Section 1.3, You are not permitted (i) to decompile, disassemble, reverse
compile, reverse assemble, reverse translate or otherwise reverse engineer the Software Product, (ii) to use any similar means to discover
the source code of the Software Product or to discover the trade secrets in the Software Product, or (iii) to otherwise circumvent any
technological measure that controls access to the Software Product. You may reverse engineer or otherwise circumvent the technological
measures protecting the Software Product for the sole purpose of identifying and analyzing those elements that are necessary to achieve
Interoperability (the “Permitted Objective”) only if: (A) doing so is necessary to achieve the Permitted Objective and it does not constitute
infringement under Title 17 of the United States Code; (B) such circumvention is confined to those parts of the Software Product and to

Maintenance 6-3

6-4 Maintenance

such acts as are necessary to achieve the Permitted Objective; (C) the information to be gained thereby has not already been made readily
available to you or has not been provided by LeCroy within a reasonable time after a written request by you to LeCroy to provide such
information; (D) the information gained is not used for any purpose other than the Permitted Objective and is not disclosed to any other
person except as may be necessary to achieve the Permitted Objective; and (E) the information obtained is not used (1) to create a computer
program substantially similar in its expression to the Software Product including, but not limited to, expressions of the Software Product in
other computer languages, or (2) for any other act restricted by LeCroy’s intellectual property rights in the Software Product.
“Interoperability” will have the same meaning in this EULA as defined in the Digital Millennium Copyright Act, 17 U.S.C. §1201(f), the
ability of computer programs to exchange information and of such programs mutually to use the information which has been exchanged.

2. SUPPORT SERVICES. At LeCroy’s sole discretion, from time to time, LeCroy may provide Updates to the Software
Product. LeCroy shall have no obligation to revise or update the Software Product or to support any version of the Software Product. At
LeCroy’s sole discretion, upon your request, LeCroy may provide you with support services related to the Software Product (“Support
Services”) pursuant to the LeCroy policies and programs described in the Documentation or otherwise then in effect, and such Support
Services will be subject to LeCroy’s then-current fees therefor, if any. Any Update or other supplemental software code provided to you
pursuant to the Support Services will be considered part of the Software Product and will be subject to the terms and conditions of this
EULA. LeCroy may use any technical information you provide to LeCroy during LeCroy’s provision of Support Services, for LeCroy’s
business purposes, including for product support and development. LeCroy will not utilize such technical information in a form that
personally identifies you.

3. PROPRIETARY RIGHTS.

3.1

Right and Title. All right, title and interest in and to the Software Product and Documentation (including but not limited to
any intellectual property or other proprietary rights, images, icons, photographs, text, and “applets” embodied in or incorporated into the
Software Product, collectively, “Content”), and all Derivatives, and any copies thereof are owned by LeCroy and/or its licensors or third­party suppliers, and is protected by applicable copyright or other intellectual property laws and treaties. You will not take any action
inconsistent with such title and ownership. This EULA grants you no rights to use such Content outside of the proper exercise of the
license granted hereunder, and LeCroy will not be responsible or liable therefor.

3.2

Intellectual Property Protection. You may not alter or remove any printed or on-screen copyright, trade secret, proprietary or
other legal notices contained on or in copies of the Software Product or Documentation.

3.3 Confidentiality

. Except for the specific rights granted by this EULA, neither party shall use or disclose any Confidential
Information (as defined below) of the other party without the written consent of the disclosing party. A party receiving Confidential
Information from the other shall use the highest commercially reasonable degree of care to protect the Confidential Information, including
ensuring that its employees and consultants with access to such Confidential Information have agreed in writing not to disclose the
Confidential Information. You shall bear the responsibility for any breaches of confidentiality by your employees and consultants. Within
ten (10) days after request of the disclosing party, and in the disclosing party's sole discretion, the receiving party shall either return to the
disclosing party originals and copies of any Confidential Information and all information, records and materials developed therefrom by the
receiving party, or destroy the same, other than such Confidential Information as to which this EULA expressly provides a continuing right
to the receiving party to retain at the time of the request. Either party may only disclose the general nature, but not the specific financial
terms, of this EULA without the prior consent of the other party; provided either party may provide a copy of this EULA to any finance
provider in conjunction with a financing transaction, if such provider agrees to keep this EULA confidential. Nothing herein shall prevent
a receiving party from disclosing all or part of the Confidential Information as necessary pursuant to the lawful requirement of a
governmental agency or when disclosure is required by operation of law; provided that prior to any such disclosure, the receiving party
shall use reasonable efforts to (a) promptly notify the disclosing party in writing of such requirement to disclose, and (b) cooperate fully
with the disclosing party in protecting against any such disclosure or obtaining a protective order. Money damages will not be an adequate
remedy if this Section 4.3 is breached and, therefore, either party shall, in addition to any other legal or equitable remedies, be entitled to
seek an injunction or similar equitable relief against such breach or threatened breach without the necessity of posting any bond. As used
herein, “Confidential Information” means LeCroy pricing or information concerning new LeCroy products, trade secrets (including without
limitation all internal header information contained in or created by the Software Product, all benchmark and performance test results and
all Documentation) and other proprietary information of LeCroy; and any business, marketing or technical information disclosed by
LeCroy, or its representatives, or you in relation to this EULA, and either (i) disclosed in writing and marked as confidential at the time of
disclosure or (ii) disclosed in any other manner such that a reasonable person would understand the nature and confidentiality of the
information. Confidential Information does not include information (A) already in the possession of the receiving party without an
obligation of confidentiality to the disclosing party, (B) hereafter rightfully furnished to the receiving party by a third party without a
breach of any separate nondisclosure obligation to the disclosing party, (C) publicly known without breach of this EULA, (d) furnished by
the disclosing party to a third party without restriction on subsequent disclosure, or (e) independently developed by the receiving party
without reference to or reliance on the Confidential Information.

4. TERMINATION. This EULA will remain in force until termination pursuant to the terms hereof. You may terminate this
EULA at any time. This EULA will also terminate if you breach any of the terms or conditions of this EULA. You agree that if this EULA
terminates for any reason, the License will immediately terminate and you will destroy all copies of the Software Product (and all
Derivatives), installed or otherwise, the Documentation, and the Confidential Information (and all derivatives of any of the foregoing) that

are in your possession or under your control. The provisions of Sections 1.3, 4, 6, 7, 8, and 9 will survive any termination or expiration
hereof.

5. U.S. GOVERNMENT RESTRICTED RIGHTS. If any Software Product or Documentation is acquired by or on behalf of
a unit or agency of the United States Government (any such unit or agency, the “Government”), the Government agrees that the Software
Product or Documentation is “commercial computer software” or “commercial computer software documentation” and that, absent a
written agreement to the contrary, the Government’s rights with respect to the Software Product or Documentation are, in the case of
civilian agency use, Restricted Rights, as defined in FAR §52.227.19, and if for Department of Defense use, limited by the terms of this
EULA, pursuant to DFARS §227.7202. The use of the Software Product or Documentation by the Government constitutes
acknowledgment of LeCroy’s proprietary rights in the Software Product and Documentation. Manufacturer is LeCroy Corporation, 700
Chestnut Ridge Road, Chestnut Ridge, NY 10977 USA.

6. EXPORT RESTRICTIONS. You agree that you will not export or re-export the Software Product, any part thereof, or any
process or service that is the direct product of the Software Product (the foregoing collectively referred to as the “Restricted Components”),
to any country, person, entity or end user subject to U.S. export restrictions. You specifically agree not to export or re-export any of the
Restricted Components (a) to any country to which the U.S. has embargoed or restricted the export of goods or services, which currently
include, but are not necessarily limited to Cuba, Iran, Iraq, Libya, North Korea, Sudan and Syria, or to any national of any such country,
wherever located, who intends to transmit or transport the Restricted Components back to such country; (b) to any end user who you know
or have reason to know will utilize the Restricted Components in the design, development or production of nuclear, chemical or biological
weapons; or (c) to any end-user who has been prohibited from participating in U.S. export transactions by any federal agency of the U.S.
government. You warrant and represent that neither the BXA nor any other U.S. federal agency has suspended, revoked or denied your
export privileges. It is your responsibility to comply with the latest United States export regulations, and you will defend and indemnify
LeCroy from and against any damages, fines, penalties, assessments, liabilities, costs and expenses (including reasonable attorneys' fees
and court costs) arising out of any claim that the Software Product, Documentation, or other information or materials provided by LeCroy
hereunder were exported or otherwise accessed, shipped or transported in violation of applicable laws and regulations.

8. RISK ALLOCATION.

8.1

No Warranty. THE SOFTWARE PRODUCT IS NOT ERROR-FREE AND THE SOFTWARE PRODUCT AND SUPPORT
SERVICES IS/ARE BEING PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. LECROY, FOR ITSELF AND ITS
SUPPLIERS, HEREBY DISCLAIMS ALL WARRANTIES, WHETHER EXPRESS OR IMPLIED, ORAL OR WRITTEN, WITH
RESPECT TO THE SOFTWARE PRODUCT OR ANY SUPPORT SERVICES INCLUDING, WITHOUT LIMITATION, ALL IMPLIED
WARRANTIES OF TITLE OR NON-INFRINGEMENT, MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE,
ACCURACY, INTEGRATION, VALIDITY, EXCLUSIVITY, MERCHANTABILITY, NON-INTERFERENCE WITH ENJOYMENT,
FITNESS FOR ANY PARTICULAR PURPOSE, AND ALL WARRANTIES IMPLIED FROM ANY COURSE OF DEALING OR
USAGE OF TRADE. YOU ACKNOWLEDGE THAT NO WARRANTIES HAVE BEEN MADE TO YOU BY OR ON BEHALF OF
LECROY OR OTHERWISE FORM THE BASIS FOR THE BARGAIN BETWEEN THE PARTIES.

8.2.

Limitation of Liability. LECROY’S LIABILITY FOR DAMAGES FOR ANY CAUSE WHATSOEVER, REGARDLESS
OF THE FORM OF ANY CLAIM OR ACTION, SHALL NOT EXCEED THE GREATER OF THE AMOUNT ACTUALLY PAID BY
YOU FOR THE SOFTWARE PRODUCT OR U.S.$5.00; PROVIDED THAT IF YOU HAVE ENTERED INTO A SUPPORT SERVICES
AGREEMENT WITH LECROY, LECROY’S ENTIRE LIABILITY REGARDING SUPPORT SERVICES WILL BE GOVERNED BY
THE TERMS OF THAT AGREEMENT. LECROY SHALL NOT BE LIABLE FOR ANY LOSS OF PROFITS, LOSS OF USE, LOSS
OF DATA, INTERRUPTION OF BUSINESS, NOR FOR INDIRECT, SPECIAL, INCIDENTAL, CONSEQUENTIAL OR
EXEMPLARY DAMAGES OF ANY KIND, WHETHER UNDER THIS EULA OR OTHERWISE ARISING IN ANY WAY IN
CONNECTION WITH THE SOFTWARE PRODUCT, THE DOCUMENTATION OR THIS EULA. SOME JURISDICTIONS DO NOT
ALLOW THE EXCLUSION OR LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THE ABOVE
EXCLUSION OR LIMITATION MAY NOT APPLY TO YOU. THESE LIMITATIONS ARE INDEPENDENT FROM ALL OTHER
PROVISIONS OF THIS EULA AND SHALL APPLY NOTWITHSTANDING THE FAILURE OF ANY REMEDY PROVIDED
HEREIN.

8.3

Indemnification. You will defend, indemnify and hold harmless LeCroy and its officers, directors, affiliates, contractors,
agents, and employees from, against and in respect of any and all assessments, damages, deficiencies, judgments, losses, obligations and
liabilities (including costs of collection and reasonable attorneys’ fees, expert witness fees and expenses) imposed upon or suffered or
incurred by them arising from or related to your use of the Software Product.

9. GENERAL PROVISIONS.

9.1

Compliance with Laws. You will comply with all laws, legislation, rules, regulations, and governmental requirements with
respect to the Software Product, and the performance by you of your obligations hereunder, of any jurisdiction in or from which you
directly or indirectly cause the Software Product to be used or accessed.

9.2

No Agency. Nothing contained in this EULA will be deemed to constitute either party as the agent or representative of the
other party, or both parties as joint venturers or partners for any purpose.

9.3

Entire Agreement; Waiver; Severability. This EULA constitutes the entire agreement between the parties with regard to the
subject matter hereof. No provision of, right, power or privilege under this EULA will be deemed to have been waived by any act, delay,
omission or acquiescence by LeCroy, its agents, or employees, but only by an instrument in writing signed by an authorized officer of
LeCroy. No waiver by LeCroy of any breach or default of any provision of this EULA by you will be effective as to any other breach or
default, whether of the same or any other provision and whether occurring prior to, concurrent with, or subsequent to the date of such
waiver. If any provision of this EULA is declared by a court of competent jurisdiction to be invalid, illegal or unenforceable, such

Maintenance 6-5

6-6 Maintenance

provision will be severed from this EULA and all the other provisions will remain in full force and effect.

9.4

Governing Law; Jurisdiction; Venue. This EULA will be governed by and construed in accordance with the laws of the State
of New York, USA, without regard to its choice of law provisions. The United Nations Convention on Contracts for the International Sale
of Goods will not apply to this EULA. Exclusive jurisdiction and venue for any litigation arising under this EULA is in the federal and
state courts located in New York, New York, USA and both parties hereby consent to such jurisdiction and venue for this purpose.

9.5

Assignment. This EULA and the rights and obligations hereunder, may not be assigned, in whole or in part by you, except to
a successor to the whole of your business, without the prior written consent of LeCroy. In the case of any permitted assignment or transfer
of or under this EULA, this EULA or the relevant provisions will be binding upon, and inure to the benefit of, the successors, executors,
heirs, representatives, administrators and assigns of the parties hereto.

9.6

Notices. All notices or other communications between LeCroy and you under this EULA will be in writing and delivered
personally, sent by confirmed fax, by confirmed e-mail, by certified mail, postage prepaid and return receipt requested, or by a nationally
recognized express delivery service. All notices will be in English and will be effective upon receipt.

9.7

Headings. The headings used in this EULA are intended for convenience only and will not be deemed to supersede or modify
any provisions.

9.8

Acknowledgment. Licensee acknowledges that (a) it has read and understands this EULA, (b) it has had an opportunity to
have its legal counsel review this EULA, (c) this EULA has the same force and effect as a signed agreement, and (d) issuance of this EULA
does not constitute general publication of the Software Product or other Confidential Information.

• Accept the agreement and press Next. The software installation process will

begin and a progress bar will be displayed. Wait until completion.

• At the completion on the software installation you will receive a dialog box as

shown below:

• The check box should be checked to install the Windows device drivers and to

upgrade the Microcode in the instrument.

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6-8 Maintenance

6.3.3 Installing Device Drivers

• Pressing finish will first install the device drivers. Displayed will be a dialog box

as shown below:

• Press Install, an error message box may appear as shown below:

• Press Continue Anyway, you may receive several more of the same dialog boxes,

accept each one.

• After this is complete you may be prompted to reboot:

• The XStream DSO application should automatically begin after power has been

restored and after Windows has finished booting up. As the XstreamDSO
application is launching the screen will appear as:

6.3.4 Restoring the Operating System

Your WaveSurfer oscilloscope was designed to operate very reliably for many years.
However, the application software does run on an internal hard drive. In the event of a hard
disk problem, you may need to recover the application software on drive “C:” and/or the
user data on drive “D:”. Since WaveSurfer does not have an installed CD-ROM drive,
LeCroy has provided a recovery application program that will allow you to recover the
application software and user data by accessing a partition on the hard drive. This is very
easy to do, if necessary. Instructions are as follows:

1. Connect a keyboard and a mouse to the WaveSurfer.

2. Power the WaveSurfer ON.

3. As soon as anything (logo, graphic, text) appears on the screen after boot-up, press and

hold down the F4 key.

4. The FirstWare cME console splash screen displays. Wait about 10 seconds.

5. The cME console End User License Agreement displays. There are [Accept] and

[Decline] buttons at the end of this License Agreement. Click the [Accept] button.

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6-10 Maintenance

6. Phoenix cME Console main page displays. Click “Applications”.

7. Click Phoenix FirstWare Recover. (If you click “SYSTEM RESTART” button,

WaveSurfer will reboot.)

8. Click the LAUNCH button.

9. The First Ware Recover splash screen displays.

10. Read the license agreement and click [Accept] to proceed.

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6-12 Maintenance

11. The Select Recover Type screen displays. Select recover option, as defined below:

[Recover Boot Partition] Recovers drive "C:" only. Drive “C:” is the drive that the

WaveSurfer application software is stored on. Drive "D:" is not recovered. (Drive

"D:" is the USERDATA area of the hard disk.)

[Recover Entire Drive] Select this button if you want to recover both the “C:” and

“D:” drives of the hard disk (Note: Any USERDATA will be erased if this option is

selected)

12. Read the license agreement and click [Accept] to proceed.

13. The following dialog box will be displayed. Click the [Yes] button.

z When you select [Recover Boot Partition], the dialog message is “This operation

will permanently overwrite the contents of your boot partition. Are you sure that

wish to continue?”

z When you select [Recover Entire Drive], the dialog message is “This operation will

permanently overwrite the contents of your entire drive. Are you sure that wish to

continue?”

14. The recovery starts, and the FirstWare Progress screen displays. No further selections

are required. The recovery takes about 10 minutes.

15. When the recovery is completed, Windows will start automatically. No message or

dialog box will display.

16. If you selected [Recover Entire Drive] in step 11, CheckDisk will run after the Windows

splash screen.

17. After the “Welcome” screen, the FBReseal dialog box will display. Click the [OK] button.

Windows will restart automatically.

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6-14 Maintenance

6.3.5 Software Options

There are many software options available, new ones are being developed all of the
time, refer to the LeCroy website for the latest selection of options available.

6.3.5.1 Changing Software Option Key

a. Scope ID, Scope Serial Number

The scope ID and scope s/n: are used to request a Software Option Key

• Enter the scope's Software Options menu (located under Utilities, Options)

.Note the SCOPE ID, i.e.: 12c5c6-a4 and Scope s/n: LCRY0601P10241 that are found on

that menu.

b. Entering Option Key in the DSO

• Enter the scope's Software Options menu ( Utilities, Options menu ).

• Press the ADD KEY button on the DSO touch screen

• Enter the new option key, i.e.: 5F4F-3184-2C81-8EF8

• Press O.K. to add the key

• The XStream application will need to be exited and restarted for any new option

key to take effect.