BK Precision 2542B-GEN User manual

Model: 2540B, 2542B, 2540B-GEN,

2542B-GEN

Digital Storage

Oscilloscopes

USER MANUAL

2

Safety Summary

The following safety precautions apply to both operating and maintenance personnel and must be observed during all phases of operation, service, and repair of this instrument. Before applying power, follow the installation instructions and become familiar with the operating instructions for this instrument.

If this device is damaged or something is missing, contact the place of purchase immediately.

This manual contains information and warnings that must be followed to ensure safe operation as well as to maintain the oscilloscope in a safe condition.

GROUND THE INSTRUMENT

To minimize shock hazard, the instrument chassis and cabinet must be connected to an electrical ground. This instrument is grounded through the ground conductor of the supplied, three-conductor ac power cable. The power cable must be plugged into an approved three-conductor electrical outlet. Do not alter the ground connection. Without the protective ground connection, all accessible conductive parts (including control knobs) can render an electric shock. The power jack and mating plug of the power cable must meet IEC safety standards.

DO NOT OPERATE IN AN EXPLOSIVE ATMOSPHERE

Do not operate the instrument in the presence of flammable gases or fumes. Operation of any electrical instrument in such an environment constitutes a definite safety hazard.

3

KEEP AWAY FROM LIVE CIRCUITS

Instrument covers must not be removed by operating personnel.

Component replacement and internal adjustments must be made by qualified maintenance personnel. Disconnect the power cord before removing the instrument covers and replacing components. Under certain conditions, even with the power cable removed, dangerous voltages may exist. To avoid injuries, always disconnect power and discharge circuits before touching them.

DO NOT SERVICE OR ADJUST ALONE

Do not attempt any internal service or adjustment unless another person, capable of rendering first aid and resuscitation, is present.

DO NOT SUBSTITUTE PARTS OR MODIFY THE INSTRUMENT

Do not install substitute parts or perform any unauthorized modifications to this instrument. Return the instrument to

B&K Precision for service and repair to ensure that safety features are maintained.

WARNINGS AND CAUTIONS

WARNING and CAUTION statements, such as the following examples, denote a hazard and appear throughout this manual.

Follow all instructions contained in these statements.

A WARNING statement calls attention to an operating procedure, practice, or condition, which, if not followed correctly, could result in injury or death to personnel.

4

A CAUTION statement calls attention to an operating procedure, practice, or condition, which, if not followed correctly, could result in damage to or destruction of part or all of the product.

CAUTION: Before connecting the line cord to the AC mains, check the rear panel AC line voltage indicator.

Applying a line voltage other than the indicated acceptable voltage can destroy the instrument.

CAUTION:

This product uses components which can be damaged by electro-static discharge (ESD). To avoid damage, be sure to follow proper procedures for handling, storing and transporting parts and subassemblies which contain ESD-sensitive components.

5

Compliance Statements

Disposal of Old Electrical & Electronic Equipment

(Applicable in the European

Union and other European countries with separate collection systems)

This product is subject to Directive

2002/96/EC of the European

Parliament and the Council of the

European Union on waste electrical and electronic equipment

(WEEE) , and in jurisdictions adopting that Directive, is marked as being put on the market after August

13, 2005, and should not be disposed of as unsorted municipal waste. Please utilize your local WEEE collection facilities in the disposition of this product and otherwise observe all applicable requirements.

6

Safety Symbols

Chassis (or earth) ground symbol.

This symbol on an instrument indicates caution.

For details, the user should refer to the operating instructions in the manual.

Electrical Shock hazard.

On (Power). This is the In position of the power switch when instrument is ON.

Off (Power). This is the Out position of the power switch when instrument is OFF.

This symbol is a power switch located at the top of the oscilloscope. Pressing this button toggles the oscilloscope’s state between power on and power off mode.

7

CAT I

(400V)

IEC Measurement Category I.

Inputs may be connected to mains (up to 400 VAC) under

Category I overvoltage conditions.

Environmental Conditions

Operating

Environment

0 °C to 40 °C

Storage Humidity 0 – 80% R.H.

Storage Environment -20 °C to +50 °C

Pollution degree Pollution degree 2

Notations

TEXT

– Denotes buttons on the oscilloscope.

Text – Denotes softkeys from the menu system, selectable by pressing corresponding menu softkey buttons.

8

Table of Contents

1 GETTING STARTED ..................................................... 14

1.1

Introduction ..................................................... 15

1.2

Package Contents ........................................... 16

1.3

Input Power Requirements .............................. 17

1.4

Panel and Screen Display ............................... 18

Front Panel Display ..................................................... 18

Back Panel Display ...................................................... 21

LCD Main Screen Display ............................................ 22

1.5

Quick Check .................................................... 24

Power On Check .......................................................... 24

Basic Check ................................................................. 25

1.6

Probe Safety ................................................... 27

1.7

Probe Attenuation............................................ 28

1.8

Probe Compensation ....................................... 28

2 BASIC OPERATION ................................................... 31

2.1

Using Quick Help............................................. 32

2.2

Using Autoset .................................................. 33

2.3

Vertical Controls .............................................. 35

Vertical Position Knob (CH1, CH2) .............................. 35

Vertical Scale Control (CH1, CH2) .............................. 36

Channel Keys CH1, CH2 ............................................ 37

CH1, CH2 Menu .......................................................... 37

MATH Functions .......................................................... 46

REF Function ............................................................... 52

9

2.4

Horizontal Controls ......................................... 55

Horizontal Position Control ...........................................56

Horizontal Scale Control ...............................................56

Main - Horizontal Mode ................................................58

Delayed - Horizontal Mode ...........................................60

X-Y Horizontal Mode.....................................................62

Roll - Horizontal Mode ..................................................63

2.5

Trigger Controls .............................................. 65

2.6

RUN Controls ................................................. 78

3 MENU OPERATION ................................................... 79

3.1

UTILITY Menu ................................................ 80

I/O Setup .......................................................................84

System Setup ...............................................................91

Service ..........................................................................96

Pass/Fail .......................................................................98

3.2

MEASURE Menu .......................................... 102

Voltage Measurements ...............................................103

Time Measurements ...................................................107

3.3

ACQUIRE Menu ........................................... 115

Record Wavefrom .......................................................119

Playback Record .........................................................120

Save/Recall the Record ..............................................122

Exit Record Function ..................................................123

3.4

SAVE/LOAD Menu ....................................... 124

Internal Storage ..........................................................125

10

External Storage ........................................................ 127

Firmware Update ....................................................... 131

3.5

CURSOR Menu ............................................. 132

Manual Mode ............................................................. 133

Track Mode ................................................................ 135

AUTO Mode ............................................................... 137

3.6

DISPLAY Menu ............................................. 138

4 SHORTCUT MENU (2540B/2542B only) .................. 141

4.1

Shortcut Controls........................................... 142

CUSTOM Button ........................................................ 142

MEASALL Button ....................................................... 144

RECORD Button ........................................................ 145

COUNTER/LOCAL Button ......................................... 145

5 ARBITRARY WAVEFORM GENERATOR

(2540B-GEN/2542B-GEN only) ..................................... 147

5.1

Waveform Generator Controls ....................... 148

MENU/GRAPH Button ............................................... 148

FREQ/CAPTURE Button ........................................... 150

AMPL/LOCAL Button ................................................. 151

ON/OFF Button .......................................................... 152

5.2

Generator Menu ............................................ 152

Sine Output ................................................................ 153

Square Output ........................................................... 154

Pulse Output .............................................................. 155

Built-in Arbitrary Waveform Output ............................ 156

User Programmable Arbitrary Waveform Output....... 160

11

AM Modulation ............................................................168

FM Modulation ............................................................170

Pulse Width Modulation ..............................................172

DC Offset Modulation (DCOM) ...................................174

Frequency Sweep .......................................................176

Burst Frequency .........................................................178

FSK and PSK Modulation ...........................................180

5.3

Output Terminals .......................................... 182

GEN OUT ...................................................................182

MOD OUT ...................................................................182

6 QUICK START GUIDE ............................................. 185

6.1

Making Simple Measurements ...................... 186

6.2

Capture Single Shot Signal ........................... 188

6.3

Reduce Random Noise on a Signal .............. 190

6.4

Triggering a Video Signal .............................. 192

6.5

PASS/FAIL Measurement ............................. 194

6.6

Using Waveform Recorder ............................ 196

6.7

Making Cursor Measurements ...................... 200

6.8

Output Basic Sine Waveform ........................ 206

6.9

Output Amplitude Modulated Waveform ....... 207

6.10

Create Waveform with Added Noise ............. 210

6.11

Capture and Output Math Waveform ............ 211

7 REMOTE CONTROL ................................................ 213

7.1

Comsoft Software ......................................... 214

7.2

Web Browser GUI ......................................... 214

8 TROUBLESHOOTING GUIDE.................................. 215

12

8.1

System Message ........................................... 216

8.2

General Problems ......................................... 220

9 SPECIFICATIONS .................................................... 223

9.1

Digital Storage Oscilloscope Specifications ... 224

9.2

Arbitrary Waveform Generator Specifications 231

9.3

General Specifications .................................. 236

9.4

Certification ................................................... 237

Appendix A: Performance Verification Procedure ..... 238

DC Gain Accuracy ................................................... 239

Bandwidth ................................................................ 241

Trigger Sensitivity .................................................... 242

Time Scale Accuracy ............................................... 243

Appendix B: Disabling Auto Function ......................... 244

13

Getting Started

1 GETTING STARTED

• Introduction

• Package Contents

• Input Power Requirements

• Panel and Screen Display

• Quick Check

• Probe Safety

• Probe Attenuation

• Probe Compensation

14

Getting Started

1.1 Introduction

The 2540B and 2542B are part of a series of portable digital storage oscilloscopes (DSOs) that offer up to 100 MHz bandwidth with a 1 GSa/s sample rate. The 2540B-GEN and 2542B-GEN models offer the same, with the addition of a built-in arbitrary waveform generator in the same form factor.

Feature s

• 60/100 MHz bandwidth (60 MHz: 2540B, 2540B-GEN

/ 100 MHz: 2542B, 2542B-GEN)

• 1 GSa/s sample rate

• Bright 5.7” TFT color display

• Deep waveform memory up to 2.4 Mpts (accessible via remote interface)

• Shortcut keys for quick access of frequently used functions (for models 2540B and 2542B only)

• Built-in arbitrary waveform generator (for models

2540B-GEN and 2542B-GEN only)

• Versatile triggering capabilities including pulse width, line-selectable video, slope, and alternating trigger

• 24 automatic measurements

• Digital filter with adjustable limits, pass/fail testing, and waveform recorder mode

• Ten different language user interfaces

• For educators – ability to disable the Auto Set button

15

Getting Started

• LAN and USB device connectivity for remote PC control through Comsoft PC software

• USB host port for convenient storing and recalling of waveform data, setups, and screenshots on a USB flash drive

1.2 Package Contents

The digital storage oscilloscopes are shipped with the following contents:

• 2540B/2542B/2540B-GEN/2542B-GEN Digital

Storage Oscilloscope

• User Manual

• Certificate of calibration

• USB (Type A to B) communication cable

• AC Power Cord

• Two 150 MHz 1x/10x passive oscilloscope probes

• One BNC-to-BNC cable (for models 2540B-GEN and

2542B-GEN only)

Please locate each item from the original packaging and contact B&K Precision immediately if something is missing.

16

Getting Started

1.3 Input Power Requirements

The 2540B, 2542B, 2540B-GEN, and 2542B-GEN DSOs do not require a line fuse when different voltage lines are used for powering the instrument. The power input requirements are:

Input Voltage Range: ~99 V to 242 VAC

Input Frequency: 47 Hz to 440 Hz

Rating: 50VA Max.

Before connecting the instrument from an AC outlet, please verify that the above power input requirements are met.

Connecting incorrect AC power input to the instrument is dangerous and may damage the instrument, voiding its warranty.

17

Getting Started

1.4 Panel and Screen Display

Front Panel Display

(top)

1

2

(top)

3

4 5 6 7 8 9 10 11

22

(bottom)

21 20 19 18 17 16 15 14 13 12

Figure 1 - Model 2540B

18

Getting Started

Figure 2 - Model 2542B-GEN

14 23 12

1. Power ON/OFF button (top panel)

2. LCD display screen

3. Carrying handle (top panel)

4. Menu ON/OFF button

5. Adjustment knob

6. AUTO SET button

7. UTILITY & SAVE/LOAD menu buttons

8. MEASURE & CURSOR menu buttons

9. ACQUIRE & DISPLAY menu buttons

10. RUN control ( SINGLE & RUN/STOP) buttons

19

Getting Started

11. TRIGGER controls

12. (for models 2540B/2542B) Shortcut buttons & Local key (Alternate function of COUNTER button; used to set unit to local mode when in remote mode)

(for models 2540B-GEN/2542B-GEN) Function keys to setup arbitrary waveform generator:

MENU / GRAPH button

FREQ / CAPTURE button

AMPL / LOCAL button

ON/OFF button

13. HORIZONTAL controls

14. EXT TRIG BNC terminal

(For models 2540B-GEN/2542B-GEN) EXT TRIG and

MOD OUT BNC terminal

15. Channel 2 BNC input

16. VERTICAL controls

17. Channel 1 BNC input

18. FUNCTION buttons (for soft panel menu)

19. PRINT button

20. Probe compensation terminal

21. USB host interface (supports most USB flash drives)

22. Tilt feet (bottom)

23. (For models 2540B-GEN/2542B-GEN only) GEN OUT

BNC terminal

20

Getting Started

Back Panel Display

2

1

3 (side)

4

10

(side)

9 8 7 6 5

1. Security loops

2. Carrying handle

3. Power ON/OFF button

4. AC line input (side panel)

5. Pass/Fail output (isolated)

6. LAN interface port

7. RS232 serial interface port

8. USB device interface port

9. Rear rubber feet

10. Ventilation fan (side panel)

21

Getting Started

LCD Main Screen Display

The oscilloscope display contains channel acquisitions, setup information, measurement results, and soft keys for setting up various parameters.

1. The USB icon appears when a USB drive is inserted into the front USB host port and ready to be used. When instrument is in remote mode, it will display “Rmt” indicator instead.

2. Readout showing the trigger position relative to the horizontal center of the screen.

22

Getting Started

3. The square brackets show the location of current display window within the whole captured waveform. The captured waveform color corresponds with the active waveform color (CH1: yellow; CH2: cyan).

4. Horizontal center position icon shows the horizontal center location within the captured waveform.

5. Trigger position icon shows the trigger location within the record waveform.

6. Acquisition status:

AUTO – “Auto” mode.

STOP – Stop acquiring waveform data.

WAIT – Waiting to be triggered.

Trig’d – DSO has seen a trigger and is acquiring post-trigger data.

Trig? – Looking for trigger

ROLL – When horizontal mode is set to “Roll”

7. Soft key menu which allows you to set up additional parameters from front-panel soft keys.

8. The display area contains the waveform acquisitions, channel identifiers, trigger and ground level indicators.

Each channel’s information appears in their respective color.

9. Trigger readout shows trigger information such as trigger source, trigger type as well as trigger level.

23

Getting Started

10. Horizontal readout shows the Main or Delayed time base.

11. Channel readouts show the scale factor, coupling, bandwidth limit, digital filter, and invert status.

12. Waveform baseline icons show the zero-volt level of the waveforms. The icon colors correspond to the waveform colors.

1.5 Quick Check

Upon receiving the instrument, inspect for any noticeable physical damages or unresponsive panel buttons. If there are any problems, please contact B&K Precision immediately.

Power On Check

Connect the AC Power Cord to the power input socket on the side of the DSO. Press down the power switch button at the top of the DSO to the ON position ( ). Verify that the instrument turns on and the LCD screen goes into an initial boot screen.

Press any key for the screen to load into the main screen showing the graticule. Contact B&K Precision if the DSO fails to load the main screen.

24

Getting Started

Basic Check

Please follow the steps below when checking the oscilloscope’s functionality.

1. Power on the oscilloscope.

Press SAVE/LOAD and Select Factory to set DSO to factory settings. The probe default attenuation is 1X.

2. Set the switch to 1X on the probe and connect the probe to channel 1 on the oscilloscope. To do this, align the slot in the probe connector with the key on the CH 1 BNC, push to connect, and twist to the right to lock the probe in place. Connect the probe tip and reference lead to the probe compensation terminal.

25

Getting Started

CH1

3. Press AUTO to show the 1 kHz frequency square wave in a few seconds.

4. Press CH1 two times to cancel the channel 1, Press

CH2 to change screen into channel 2, reset the channel 2 and repeat step 2 and step 3 for CH2.

26

Getting Started

1.6 Probe Safety

A guard around the probe body provides a finger barrier for protection from electric shock.

Connect the probe to the oscilloscope and connect the ground terminal to ground before you take any measurements.

Note: To avoid electric shock when using the probe, keep fingers behind the guard on the probe body.

Note: To avoid electric shock while using the probe, do not touch metallic portions of the probe head while it is connected to a voltage source. Connect the probe to the oscilloscope and connect the ground terminal to ground before you take any measurements.

27

Getting Started

1.7 Probe Attenuation

Probes are available with various attenuation factors which affect the vertical scale of the signal.

You can push a vertical menu button (such as the CH 1 button), and select the Probe option that matches the attenuation factor of your probe.

Note: The default setting for the Probe option is 1X.

Be sure that the attenuation switch on the probe matches the

Probe option in the oscilloscope. The included probes can switch between 1X and 10X.

Note: When the attenuation switch is set to 1X, the probe limits the bandwidth of the oscilloscope to

10 MHz (according to Probe spec). To use the full bandwidth of the oscilloscope, be sure to set the switch to 10X.

1.8 Probe Compensation

Perform this adjustment to match your probe to the input channel. This should be done whenever you attach a passive

28

Getting Started probe for the first time to any input channel. A poorly compensated probe can introduce measurement errors.

1. Set both the probe and the oscilloscope attenuation factor to X10 respectively.

2. Connect the oscilloscope probe to channel 1. Attach the probe tip and reference lead to the probe compensation terminal and to the chassis ground terminal, then press

AUTO key.

3. Use a nonmetallic tool to adjust the trimmer capacitor on the probe for the flattest pulse possible (see “Correct compensation” image below). The trimmer capacitor is located either on the probe BNC connector or above the probe attenuation switch.

Correct compensation

Over compensated

Under compensated

4. Connect probes to channel 2. Repeat the above steps.

This matches each probe to each channel.

29

Basic Operation

2 BASIC OPERATION

• Using Quick Help

• Using Autoset

• Vertical Controls

• Horizontal Controls

• Trigger Controls

• RUN Controls

31

Basic Operation

2.1 Using Quick Help

The digital storage oscilloscope has a quick help system that provides a description of functionality for each front panel keys and soft panel keys.

Press and hold down the key or the softkey that you want to see help description for. The help information will display and remain at the center of the screen as shown below until another key is pressed or a knob is turned.

Note: Quick help is not available for CUSTOM shortcut

key. Refer to “CUSTOM Button” section for

details on its usage.

32

Basic Operation

If there are more than one page of help information, press the key to browse the previous or next pages.

2.2 Using Autoset

The 2540B/2542B/2540B-GEN/2542B-GEN oscilloscopes provide an Autoset function which sets the vertical, horizontal, and trigger controls automatically for optimal display of the signal(s) connected at either or both CH1 and CH2.

Autoset function detects, turns on, and scales any channel with a repetitive waveform if it meets the following requirements:

• Frequency of at least 50Hz

• Duty cycle greater than 0.5%

• Amplitude of at least 10 mVpp

Note: Any channels that do not meet these requirements are turned off.

When you are using more than one channel, the Autoset function sets the vertical controls for each channel and uses

CH1 to set the horizontal and trigger controls.

To configure the oscilloscope quickly and automatically to see connected signals, press the AUTO key. The oscilloscope will take a few seconds to automatically set

33

Basic Operation various parameters. If signal is found, it will beep once and open the AUTO menu before displaying the signal. If there are no signals, no beep will occur and a display message will read “No signal is found”.

To configure the oscilloscope to display multiple cycles, press

Multi-Cycle softkey in the AUTO menu.

To configure the oscilloscope to display a single cycle, press

Single Cycle softkey in the AUTO menu.

To undo the effects of Autoset, press the Undo Autoset softkey in the AUTO menu before pressing any other key.

This is useful when you have unintentionally pressed the

AUTO key or do not like the settings Autoset has selected and want to return to your previous settings.

34

Basic Operation

Note: Auto set function can be disabled. See

“Appendix B: Disabling Auto Function” for details

2.3 Vertical Controls

Vertical controls

Vertical Position Knob (CH1, CH2)

Turn the small vertical position knob above the channel key to move the channel’s waveform and its ground level icon ( ) up or down on the display. The voltage value momentarily displayed (shown below) in the bottom left corner of the display represents the voltage difference between the vertical center of the display and the ground level ( ).

35

Basic Operation

Press the vertical position knob to bring the channel’s waveform and its ground level icon ( ) directly back to the vertical center of the display.

Vertical Scale Control (CH1, CH2)

Turn the large vertical scale knob below the channel key to set the scale factor for the channel. The vertical scale knob changes the channel scale in a 1-2-5 step sequence. The channel scale factor value is displayed in the bottom left portion of the display.

Press the vertical scale knob to toggle between Fine and

Coarse control. When fine is selected, you can change the channel’s vertical sensitivity in smaller resolution. When

36

Basic Operation coarse is selected, the vertical scale knob changes the channel scale in a 1-2-5 step sequence.

Channel Keys CH1, CH2

Press the channel key from the front panel to display the channel’s menu and turn the display of the channel on or off.

The channel is displayed when the key is illuminated.

The channel menu of a channel must be displayed first before you can turn off the channel. For example, suppose

CH1 and CH2 are both displayed and the CH2 menu is also displayed. In order to turn CH1 off, you should press the CH1 key first to show CH1 menu on the display, then press CH1 key again to turn off CH1.

CH1, CH2 Menu

Press the channel key CH2 to display the channel’s menu and turn on the channel display.

Channel Coupling

Press the channel key CH2, then press the Coupling softkey to select AC coupling mode.

AC coupling places a high pass filter in series with the input signal that blocks the DC component of the input signal. AC coupling is useful for viewing waveforms with large DC offsets.

37

Basic Operation

AC Coupling

Press the channel key CH2, then press the Coupling softkey again to select DC coupling mode.

DC coupling passes both AC and DC components of the input signal. DC coupling is useful for viewing low frequency waveforms that do not have large DC offsets.

DC Coupling

38

Basic Operation

Press the channel key CH2, then press the Coupling softkey until GND coupling is selected.

GND mode blocks both AC and DC components of the input signal and connect the input to the ground level.

GND Coupling

BW Limit

Press the channel key CH2, then press the BW Limit softkey to turn the bandwidth limit on or off for the selected channel 2.

When it is off, it passes both the high and low frequency components.

39

Basic Operation

BW Limit off

When it is on, the maximum bandwidth for the channel is approximately 20 MHz. For waveforms with frequencies below this, turning bandwidth limit on removes unwanted high frequency noise from the waveform.

BW Limit on

40

Basic Operation

Probe Attenuation Setting

Probes are available with various attenuation factors which affect the vertical scale of the signal. You can manually select the factor that matches the attenuation of your probe.

For example, to match a probe set to 10X connected to CH2, press the channel key CH2, and then press the Probe softkey and select 10X.

Press the Probe softkey again and select 1X when a probe with 1:1 attenuation factor is connected to CH2.

Set Probe Attenuation Factor to 1X

41

Basic Operation

Digital Filter

Each channel has built-in digital filters that can be applied to the connected signal.

Press the channel key CH1, then press the Digital Filter softkey to display the FILTER-CH1 menu. Four kinds of filter types are available:

1.

2.

3.

4.

Low pass filter

High pass filter

Band pass filter

Band block filter

Press the Upper Limit or Lower Limit softkey and then adjust the Entry knob to set the high and/or low frequency range for the filter.

Digital Filter is off

42

Basic Operation

Digital Filter is on

Vertical Scale

Turn the large vertical scale knob below the channel key to set the scale factor for the channel. The channel scale factor value is displayed in the bottom left portion of the display.

Press CH2

→ More 1/2 → Volts Scale to select Coarse or

Fine adjustment. You can also press the large vertical scale knob to toggle between Fine and Coarse. When Coarse is selected, the vertical scale knob changes the channel scale in a 1-2-5 step sequence. When Fine is selected, the vertical scale knob changes the channel scale in a smaller resolution.

43

Basic Operation

Fine Vertical Scale

Vertical Invert

Press CH2

→ More 1/2 → Invert to set Invert on or off. When

Invert is turned on, the voltage values of the displayed waveform are inverted. Invert affects how a channel is displayed, but does not affect triggering. If the oscilloscope is set to trigger on a rising edge, it remains set to trigger on the same edge after the channel is inverted.

Inverting a channel will also change the result of any math function selected in the MATH menu or any measurement.

44

Basic Operation

Vertical Invert off

Vertical Invert on

45

Basic Operation

MATH Functions

Dual Waveform Calculation

Press MATH channel key to turn on the MATH menu, page

½.

Softkey Options Description

A+B Add A and B

Operate

A-B Subtract B from A

A X B Multiply A by B

FFT Access FFT menu

Source A

CH1 Select CH1 as Source A

CH2 Select CH2 as Source A

CH1 Select CH1 as Source B

Source B

Invert

CH2 Select CH2 as Source B

ON Math invert ON

OFF Math invert OFF

More 1/2 ---- Select page 2/2

46

Basic Operation

Press softkey More 1/2 to display MATH menu page 2/2.


A+B Add A and B

Operate



FFT Access FFT menu

Display

Mode

Split

Screen

Full

Screen

Vertical scale control

Vertical position control

Split the display into Main and Math sections

Display Math waveform in full screen


47

Basic Operation

Example:

Select the A+B math function, then select CH1 as the Source

A, and select CH2 as the Source B. The resulting math waveform will look like below:

Math A+B

48

Basic Operation

FFT Spectrum Analysis

You can use the FFT function to measure harmonic components and distortion in systems, to characterize noise in DC power supplies, and to analyze vibration.

Press MATH channel key to turn on the MATH menu page

1/2, and then press Operate softkey to select FFT. The FFT menu page 1/2 will be displayed.

Softkey Options

A+B

Operate

Source

Window

Scale

More 1/2

Description

Add A and B

A-B

A X B

FFT

CH1

Subtract B from A

Multiply A by B

Access FFT menu

Select CH1 for FFT

CH2 Select CH2 for FFT

Rectangular Use Rectangular window

Hanning Use Hanning window

Hamming Use Hamming window

Blackman Use Blackman window

Flattop Use Flattop window dBV RMS

V RMS

----

Vertical scale in dBV

RMS

Vertical scale in V RMS

Select page 2/2

49

Basic Operation

Press softkey More 1/2 to display FFT menu page 2/2.

Softkey Options

A+B

Operate

Display

Mode

More 2/2

Description

Add A and B

Split

Screen

Full

Screen

----



FFT Access FFT menu

Vertical scale control

Vertical position control

Split the display into Main and Math sections

Display Math waveform in full screen

Select page 1/2

50

Basic Operation

Example:

Select CH1 as the Source for FFT, select Rectangular

Window, set Scale to dBV RMS, and then the FFT waveform will look like below. You can also measure the amplitude and frequency of the corresponding point with the manual cursors

(See “CURSOR Menu”).

FFT Spectrum Analysis

51

Basic Operation

REF Function

The REF function allows users to store and recall a waveform as a reference. This is useful for comparing and analyzing signals from different systems.

Press REF channel key to turn on the REF menu, page 1/2.

Softkey Options

Source

Volts

Scale

Description

CH1

CH2

Save CH1 as reference

Save CH2 as reference

REF vertical scale control

REF vertical position control

Coarse Coarse vertical scaling

Fine Fine vertical scaling

More

1/2

---- Select page 2/2

52

Basic Operation

Press softkey More 1/2 to display REF menu, page 2/2.

Softkey

Invert

Internal

Storage

Options

ON

OFF

Description

REF invert ON

REF invert OFF

INTERNAL menu

Save the reference waveform to the internal memory

External

Storage

EXTERNAL menu

Save the reference waveform to the

USB mass storage device

More

2/2


Press REF channel key to turn on the REF menu page 1/2, press softkey More 1/2 to display REF menu page 2/2. Load the latest saved reference waveform from the internal memory by selecting Internal Storage or locate and load reference waveform file from the external memory by selecting External Storage.

You can use the horizontal position and scale control knob to change the time base of the reference waveform.

53

Basic Operation

Press or softkey and turn the Entry knob

to change the vertical scale or position of the reference waveform.

Press REF

→ Internal Storage → Save to save the waveform of the Source channel as the reference waveform to the internal memory.

Save a Reference waveform

Note: The reference waveform function is unavailable when X-Y mode is selected.

54

Basic Operation

2.4 Horizontal Controls

Use the horizontal controls to adjust the time base, adjust the trigger location, and to examine waveform details more closely.

Horizontal Controls

55

Basic Operation

Horizontal Position Control

When the oscilloscope is running, this control lets you set the acquisition window relative to the trigger point. When the oscilloscope is stopped, you can turn this knob to pan through the data horizontally. This lets you see the captured waveform before the trigger or after the trigger.

The trigger position is marked with the indicator “ ” at the top of the graticule and also in the waveform record data icon at the top of the screen.

The small inverted triangle () is the time reference indicator.

When you change the horizontal scale, the waveforms contract or expand about this point.

Press the horizontal position control knob key to set the time delay to zero, and the trigger position indicator ( ) will move right below the time reference indicator().

Note: The horizontal position control is unavailable when X-Y horizontal mode is selected.

Horizontal Scale Control

Use the horizontal scale control to adjust the time base. The scale expands or contracts around the center of the screen.

The horizontal scale factor can be set in a 1-2-5 sequence.

56

Basic Operation

Press the horizontal scale control knob to toggle between

Main and Delayed horizontal display mode.

Horizontal MENU key

Press the horizontal MENU key to display the HORIZONTAL menu. This menu lets you select the horizontal mode: Main,

Delayed, Roll, or X-Y.

Press the horizontal MENU key to display the HORIZONTAL menu page 1/2.


√

Main

Main mode is ON

---- Main mode is OFF

√

Delayed

Delayed mode is ON

----

√

Delayed mode is OFF

X-Y

X-Y mode is ON

----

√

X-Y mode is OFF

Roll

Roll mode is ON

---- Roll mode is OFF

-More-


1/2

57

Basic Operation

Press softkey More 1/2 to display the HORIZONTAL menu page 2/2.

Softkey Options

Trig-Offset

Reset

-More-

2/2

----

----

Description

Reset the delay time to zero

Select page 1/2

Main - Horizontal Mode

Main horizontal mode is the normal viewing mode for the oscilloscope. When the oscilloscope is stopped, you can use the horizontal controls to pan and zoom the waveform. When the oscilloscope is running in Main mode, use the horizontal scale knob to change horizontal scale factor and use the horizontal position knob to set the delay time. The time base (second/division) value is displayed at the bottom of the screen.

Press the horizontal MENU key and then press the Main softkey to select the main horizontal mode.

58

Basic Operation

Main Horizontal Mode

1. Readout shows the delay time or the trigger location within the record data relative to the time reference point

().

2. The square brackets show the location of current display window within the record data.

3. Trigger position within the record data.

4. Trigger position on the current waveform display window.

5. Main time base.

59

Basic Operation

Delayed - Horizontal Mode

Delayed horizontal mode is an expanded version of main mode. When Delayed mode is selected, the display divides in half. The top half of the display shows the normal waveform and bottom half displays the delayed waveform.

Delayed waveform is a magnified portion of the normal waveform. You can use delayed waveform to locate and horizontally expand part of the normal waveform for a more detailed analysis of signals.

The area of the normal display that is expanded is marked on each end with a vertical shaded area. The unshaded area shows what portion of the normal waveform is expanded in the lower half.

To change the time base for the delayed window, turn the horizontal scale knob. As you turn the knob, the time base for the delayed window is displayed just above the main time base.

To change the time base for the normal window, press the

Main softkey, then turn the horizontal scale control knob.

Connect a triangle signal source to CH1, press the horizontal

MENU key and then press the Delayed softkey to enter the

Delayed mode. You can also press the horizontal scale

60

Basic Operation control knob key to toggle between Main and Delayed mode directly.

Delayed Horizontal Mode

61

Basic Operation

X-Y Horizontal Mode

X-Y mode changes the display from a volts-versus-time display to a volts-versus-volts display. The time base is turned off. CH1 amplitude is plotted on the X axis and CH2 amplitude is plotted on the Y axis.

You can use X-Y mode to compare frequency and phase relationships between two signals. X-Y mode can also be used with transducers to display strain versus displacement, flow versus pressure, voltage versus current, or voltage versus frequency.

In order to get a better view of the waveform, proper vertical scale should be selected before selecting the X-Y mode.

Use X-Y mode to compare two signals with the same frequency and different phase. Connect the two signal to CH1 and CH2 respectively. Press horizontal MENU key and then

X-Y softkey to select X-Y mode.

X-Y Horizontal Mode

62

Basic Operation

Roll - Horizontal Mode

Roll mode causes the waveform to move slowly across the screen from right to left.

Note: It only operates on time base settings of 500 ms/div or slower. If the current time base setting is faster than the 500 ms/div limit, it will be set to

500 ms/div when Roll mode is selected.

In Roll mode there is no trigger. The fixed reference point on the screen is the right edge of the screen and refers to the current moment in time. Events that have occurred are scrolled to the left of the reference point. Since there is no trigger, no pre-trigger information is available.

If you would like to pause the display after a full screen of acquisition in Roll mode, press the SINGLE key. To clear the display and restart another full screen acquisition in Roll mode, press the SINGLE key again.

Press the horizontal MENU key and then press the Roll softkey to select the Roll mode. The waveform will move slowly across the screen from right to left.

The fastest time base is 500 ms in roll mode.

63

Basic Operation

Roll Horizontal Mode

64

Basic Operation

2.5 Trigger Controls

The trigger controls determine when the oscilloscope starts to acquire and display the waveform. When a trigger is found, the oscilloscope will acquire sufficent data to display the waveform.

Note: Trigger controls are functional when the oscilloscope works under Main or Delayed horizontal mode.

Trigger Controls

65

Basic Operation

Trigger Control MENU key

Press the trigger control MENU key to show the TRIGGER menu and then press the Type softkey to select Edge, Pulse or Video.

Set to 50% key

Press the 50% key to set the trigger level to the 50% amplitude level of the trigger source waveform.

Force Trigger key

Press the FORCE key to force an immediate trigger event, even in the absence of a signal. This function is useful in following situations:

If you do not see a waveform on the screen when using

Normal trigger mode, press the FORCE key to acquire the signal baseline to verify that it is on the screen.

After you press the SINGLE key to set up for a single shot acquisition, you can press the FORCE key to test and verify the control settings.

Trigger Level Control

Use the trigger level control knob to adjust the trigger level.

When you change the trigger level, a horizontal red line temporarily appears to show you the level position on screen.

66

Basic Operation

After the line disappears, the trigger level is marked with a small left arrow.

Auto and Normal Trigger Modes

Press the trigger MENU key to display the TRIGGER menu and press the Mode softkey to select Auto or Normal trigger mode.

Auto mode

Use the auto trigger mode for signals other than low-repetitive-rate signals and for unknown signal levels. To display a DC signal, you must use Auto trigger mode since there is no edge to trigger on.

When you press RUN/STOP key to start acquiring, the oscilloscope first fill the pre-trigger buffer. It starts to search for a trigger after the pre-trigger buffer is filled, and continues to flow data through this buffer while it searches for the trigger.

While searching for the trigger, the oscilloscope overflows the pre-trigger buffer; the first data put into the buffer is the first pushed out. When a trigger is found, the pre-trigger buffer will contain the events that occurred just before the trigger. If no trigger is found, the oscilloscope generates a trigger and displays the data as though a trigger had occurred. In this case, the background of the Auto indicator at the top of the

67

Basic Operation display will flash, indicating that the oscilloscope is force triggered.

When you press the SINGLE key, the oscilloscope will fill the pre-trigger buffer, and continue to flow data through the pre-trigger buffer until the Auto trigger overrides the search and forces a trigger. At the end of the trace, the oscilloscope will stop and display the results.

Normal mode

Use Normal trigger mode for low repetitive-rate signals or when Auto trigger is not required.

In Normal mode the oscilloscope must fill the pre-trigger buffer with data before it will begin searching for a trigger event. While searching for the trigger, the oscilloscope overflows the pre-trigger buffer; the first data put into the buffer is the first pushed out.

When the trigger event is found, the oscilloscope will fill the post-trigger buffer and display the results. If the acquisition was initiated by RUN/STOP, the process repeats. If the acquisition was initiated by SINGLE, then the acquisition stops.

In either Auto or Normal mode, the trigger may be missed if the oscilloscope’s pre-trigger buffer is not full yet.

68

Basic Operation

Holdoff Function

Holdoff sets the amount of time that the oscilloscope will wait before re-initializing the trigger circuit. You can use the holdoff function to stabilize the display of complex waveforms.

With the holdoff function, you can synchronize triggers. The oscilloscope will trigger on one edge of the waveform, and ignore further edges until the holdoff time is up. The oscilloscope will then re-initialize the trigger circuit to wait for the next edge trigger. This allows the oscilloscope to trigger on a repeating pattern in a waveform.

Turn the Entry knob to increase or decrease the trigger hold off time shown in the Holdoff softkey. To get a stable trigger on the pulse burst shown on the screen, set the holdoff time to be slightly less than the period of the pulse burst.

Holdoff Function

69

Basic Operation

Edge Trigger

Use the Edge triggering to trigger on the rising or falling edge of the input signal at the trigger threshold.

Press trigger control MENU key to display the TRIGGER menu, then press Type softkey to select Edge trigger.


Video Video triggering

Type

Source

Slope

Edge Edge triggering

Pulse Pulse width triggering

CH1 Trigger on CH1

CH2 Trigger on CH2

EXT Trigger on EXT

EXT/5 Trigger on EXT/5

AC Line Trigger on AC line signal

Alternating

Trigger on CH1 and

CH2 alternately

Rising edge of a signal

Falling edge of a signal

Mode

Trigger

Setup

Auto

Normal

----

Trigger even without a valid event

Trigger only on a valid event

Select trigger SETUP menu.

70

Basic Operation

Note: (For models 2540B-GEN and 2542B-GEN only)

When Source is set to EXT or EXT/5, the EXT

TRG/MOD OUT BNC terminal will function as an external trigger terminal. When Source is set to all other options, the same terminal will function as the modulation waveform output that is part of the built-in arbitrary waveform generator.

Pulse Width Trigger

Pulse width triggering sets the oscilloscope to trigger on a positive or negative pulse of a specified width from 20 ns to

10 s.

Press trigger control MENU key to display the TRIGGER menu page 1/2, then press Type softkey to select Pulse trigger.

Softkey Options

Type

Description




Source

CH1 Trigger on CH1

CH2 Trigger on CH2

EXT Trigger on EXT

EXT/5 Trigger on EXT/5

CH1 and CH2

Alternating alternately

71

Basic Operation

Pulse

Mode

Positive greater than

Positive equal

Positive within

Positive less than

Negative greater than

Negative equal

Negative within

Negative less than

Pulse

Setup

More 1/2

Set the pulse width





Press trigger control MENU key to display the TRIGGER menu, press Type softkey to select Pulse trigger and then press the More 1/2 softkey to display TRIGGER menu page

2/2.

72

Basic Operation



Type Edge Edge triggering


Auto


Mode

Trigger

Setup

More 2/2

Normal

----

----


Select trigger SETUP menu

Select page 1/2

73

Basic Operation

Video Trigger

Choose video triggering to trigger on the odd fields, even fields, or on all the lines of a NTSC or PAL/SECAM video signal.

Press trigger control MENU key to display the TRIGGER menu, then press Type softkey to select Video trigger.

Softkey Options

Video

Type

Source

Polarity

Sync

More 1/2

Edge

Pulse

CH1

CH2

EXT

EXT/5

Alternating

Description

Video triggering

Edge triggering

Pulse width triggering

Trigger on CH1

Trigger on CH2

Trigger on EXT

Trigger on EXT/5

Trigger on CH1 and

CH2 alternately

Positive polarity

Negative polarity

Odd Field Trigger on odd fields

Even Field Trigger on even fields

All Lines Trigger on all lines

Line #

----

Trigger on specific line

Select page 2/2

74

Basic Operation

Press softkey More 1/2 to display the TRIGGER menu page

2/2.




Softkey Options

Type

Description




Standard

NTSC Trigger on NTSC signal

Trigger on PAL or

PAL/SECAM

SECAM signal


Mode

Normal

Trigger

Setup

Auto

----


Select trigger SETUP menu


75

Basic Operation

Press softkey Trigger Setup from the TRIGGER menu page

2/2 to display the trigger SETUP menu.

Softkey

Sensitivity

Options Description

Set the trigger sensitivity by turning the entry knob

AC AC coupling

DC DC coupling

Coupling

LF Reject Reject low frequencies

HF Reject Reject high frequencies

Holdoff

Holdoff

Reset

----

----

Set up the holdoff time between two consecutive triggers

Reset the holdoff time to default value 100 ns

Return to the TRIGGER menu

Note: There will be no coupling menu item when video trigger mode is selected in the trigger SETUP menu.

76

Basic Operation

The following figures show the video waveforms triggered on odd fields and on a specific line 6.

Trigger on odd fields

Trigger on specific line 6

77

Basic Operation

2.6 RUN Controls

Run controls

Press the SINGLE key to execute a single-shot acquisition.

The key will illuminate in orange until the oscilloscope is triggered.

Press the RUN/STOP key to make the oscilloscope start looking for a trigger. The RUN/STOP key will illuminate in green. When the trigger mode is set to Normal mode, the display will not update until a trigger is found. If the trigger mode is set to Auto mode, the oscilloscope looks for a trigger, and if no trigger is found, it will be triggered automatically and the waveform of input signals will be shown immediately.

Press the RUN/STOP key again to stop acquiring data and the RUN/STOP key will illuminate in red. Now you can pan across and zoom in on the acquired waveform.

78

Menu Operation

3 MENU OPERATION

• UTILITY Menu

• MEASURE Menu

• ACQUIRE Menu

• SAVE/LOAD Menu

• CURSOR Menu

• DISPLAY Menu

79

Menu Operation

3.1 UTILITY Menu

Press the UTILITY menu key to show the UTILITY menu.

UTILITY Menu key

80

Menu Operation

Press the UTILITY key to display the UTILITY menu page

1/2.


I/O Setup ---- Select I/O SETUP menu

Print

Setup

---- Select PRINT menu

System

Setup

---- Select SYSTEM menu

Language

简体中文 Simplified Chinese

繁軆中文 Traditional Chinese

English English language

한국의 Korean language

日本語 Japanese language

Pyccкий Russian language

Français French language

More 1/2

Español Spanish language

Polski Polish language

Português Portuguese language

---- Select menu page 2/2

81

Menu Operation

Press the More 1/2 softkey to display the UTILITY menu page 2/2.

Softkey

Service

Options

----

Description

Select Service menu

Pass/Fail

Self-Cal

Fast-Cal

More 2/2

----

Select PASS/FAIL menu

RUN/STOP Start self-calibration

AUTO

ON

Exit self-calibration

Fast calibrate the vertical position

OFF

----

Turn off fast calibration

Select menu page 1/2

Self-Calibration

If you want to maximize measurement accuracy, you can perform a self-calibration.

Self-calibration uses the internally generated signals to optimize circuits that affect channel scale, offset and trigger parameters for all the divisions over the full range.

Disconnect all inputs and allow the oscilloscope to warm up at least 30 minutes before performing self-calibration.

82

Menu Operation

Press UTILITY

→ Self-Cal to display the self-calibration page. Press AUTO key to exit the Self-Calibration, or press

RUN key to start the self-calibration.

Self Calibration

Note: Warm up the oscilloscope at least 30 minutes before performing self-calibration. Do not have anything connected to any of the inputs. Doing so will create errors and instrument may fail to calibrate properly.

83

Menu Operation

Fast-Calibration

Fast calibration is ideally used to calibrate the instrument to remedy the effects of temperature drift causing an offset drift.

It calibrates the center position of each Volt/Div setting, but not for the full range. This is different compare to self-calibration, in which the channel scale, offset, and trigger are calibrated.

I/O Setup

Press UTILITY

→ I/O Setup to display the I/O SETUP menu.

Baud

Rate

Network

Settings

Softkey Options

USB

Device

Type RS232C

LAN

----

----

Description

Select USB interface

Select RS232C interface

Select LAN interface

Available baud rate: 2400, 4800,

9600, 19200,

38400

Select LAN menu

Return to the

UTILITY menu

84

Menu Operation

Press Network Settings softkey to display the LAN menu.

Softkey Options

DHCP

↑↓

OK

ON

OFF

----

----

----

----

Description

IP address together with subnet mask and gateway address will be set by DHCP server automatically.

You have to set IP address, subnet mask and gateway address manually.

Move the cursor position vertically (available when

DHCP is OFF).

Move the cursor position horizontally (available when DHCP is OFF).

Confirm and apply the current settings.

Return to the I/O SETUP menu

85

Menu Operation

Follow the following steps to manually configure the LAN interface:

 Set the IP Address. Contact your network administrator for the IP address to use. All IP addresses take the dot-notation form “nnn.nnn.nnn.nnn” where “nnn” in each case is a byte value in the range 0 through 255. Move the cursor to the IP address position and change the IP address using the entry knob.

 Set the Subnet Mask. The subnet mask is required if your network has been divided into subnets. Move the cursor to the subnet mask position and enter the subnet mask in the IP address format using the entry knob.

 Set the Gateway IP. The gateway address is the address of a gateway which is a device that connects two

86

Menu Operation networks. Move the cursor to the Gateway IP position and enter the gateway address in the IP address format using the entry knob.

 Set the DNS IP. DNS is an internet service that translates domin names into IP addresses. Move the cursor to the DNS IP position and enter the address of the DNS server in the IP address format using the entry knob.

Note: If you are manually entering the LAN settings, you may need to restart the oscilloscope for settings to apply. If you are using DHCP, first turn on

DHCP, then select OK and wait a few seconds until the Configure Status shows “DHCP”.

Otherwise, it may not be able detect the correct

DHCP settings from the connected network. We recommend configuring with DHCP.

Note: The instrument does not support socket or telnet connection. When interfacing over LAN, if settings were changed or refreshed (from selecting OK from softpanel menu), the instrument may need to be rebooted first before it can be connected for remote control.

87

Menu Operation

Print Setup

Press UTILITY

→ Print Setup to display the PRINT menu.


Print to File Print to file

BMP(8Bit) 8-Bit BMP file format

File Type

Screen

BMP(24Bit) 24 Bit BMP file format

CSV CSV file format

Normal Normal BMP picture

Inverted Inverted color BMP picture

Return to the UTILITY menu

----

Print To

The Print To softkey option configures what file type to store when the PRINT key is pressed.

Note: The file can only be stored through an external

USB storage device connected to the front USB host port.

To store a file to external USB drive, do the following:

1. Connect a USB flash drive to the USB host connector on the front panel.

88

Menu Operation

2. Press File Type softkey to select the file format you want.

3. Press the PRINT key to save the file to the USB drive.

If BMP is selected, it will take a screen capture of the display and store it as a .BMP file. If CSV is selected, it will store the CSV data that represents the waveform on the display.

Note: The BMP options will print out everything that is as shown when PRINT key is pressed, including the opened softkey menu. To get a screen capture without an opened softkey menu, please use the MENU ON/OFF key to turn off the menu on the display before printing to a file.

File Type

BMP(8 bit) – Stores in .BMP file format with 8 bit color resolution.

Note: Some software or image viewer may not be able to view this file format.

BMP(24 bit) – Stores in .BMP file format with 24 bit color resolution.

89

Menu Operation

CSV – Stores the waveform data captured on the frame of the screen into CSV file format. Depending on the timebase, the maximum number of points that can be stored into CSV is

1200 pts.

Note: Deep memory data cannot be stored into a .CSV file to a USB flash drive. It can only be obtained by remote control over USB, RS232, or LAN interface located in the rear panel of the instrument.

Screen

Normal – Prints the screen with normal colors.

Inverted – Prints the screen with inverted colors.

Normal

90

Menu Operation

Inverted

System Setup

Press UTILITY

→ System Setup to display the SYSTEM menu page 1/2.

Softkey Options

Key

Sound

Alarm

Sound

Counter

Description

Key press sound on

Key press sound off

Alarm sound on

ON

Alarm sound off

Frequency counter on

OFF Frequency counter off

More 1/2 ---- Select menu page 2/2

91

Menu Operation

Frequency Counter

Select the Counter softkey to toggle between enabling and disabling frequency counter shown on screen.

Press the More 1/2 softkey to display the SYSTEM menu page 2/2.


ON Key Lock function on

Key Lock

OFF

Key Lock function off, a password is required when

Password is ON

Password

Change

Password

ON Password protection on

Password protection off, a

OFF password is required when

Password is ON

The old password is required to change the password

---- Return to the UTILITY menu

More 2/2 ---- Select menu page 1/2

Note: The default password is “111111”

92

Menu Operation

Key Lock

Press UTILITY

→ System Setup → Key Lock to lock the front panel operation, all the keys and controls. When key lock is on, all keys are disabled except MENU ON/OFF key and the five softkeys. When front panel is locked a red lock icon is displayed at the top-left corner of the screen. Correct password is required to unlock the front panel operation when

Password is ON as shown below. The default password is

“111111”.

93

Menu Operation

Password Protection

Press Password softkey from the SYSTEM menu 2/2 to turn off the Password protection function, correct password is required as shown below.

94

Menu Operation

Change Password

Press Change Password softkey from the SYSTEM menu page 2/2 to display the CHANGE menu. The old password is required before entering and confirming the new password as shown below.

95

Menu Operation

Service

Press UTILITY

→ Service to display the Service menu.


System

Information

----

Display system information: Model,

Serial number,

Software version,

Installed modules

Screen

Test

---- Test the LCD screen

Key Test ----

----

Check the key and control operation

Return to the UTILITY menu

96

Menu Operation

System Information

Press UTILITY

→ Service to display the Service menu, and then press the System Info softkey to display the system informations, such as Model, Serial number, Power up times,

Software version and a list of installed modules.

System Information

97

Menu Operation

Pass/Fail

The oscilloscope first measures the input source signal and compares it with Pass/Fail settings, and then outputs the

Pass/Fail result.

Press UTILITY

→ Pass/Fail to display the PASS/FAIL menu

1/2.


ON Pass/Fail function on

Enable Test

OFF Pass/Fail function off

Source

Operate

Setup Mask

CH1 Source signal CH1


 Start Pass/Fail test

 Stop Pass/Fail test

---- Set up the regulations

More 1/2 ---- Display the menu 2/2

98

Menu Operation

Press More 1/2 to display the PASS/FAIL menu 2/2.

Softkey

Msg

Display

Output

Options

ON

OFF

PASS

Description

Pass/Fail count message on

Pass/Fail count message off

Output on Pass waveforms

PASS+

Output and alarm on Pass waveforms

FAIL Output on Fail waveforms

FAIL+

ON

Output and alarm on Fail waveforms

Stop sampling on output

Stop on

Output OFF

More 2/2

----

----

Continue sampling on output

Return to the UTILITY menu

Display the menu page

1/2

Note: Pass/Fail function is not available when X-Y mode is selected.

99

Menu Operation

Setup Mask

Press UTILITY

→ Pass/Fail → Setup Mask to display the

MASK menu 1/2.

Softkey Options

X Mask

Y Mask

Create

Mask

----

----

Description

Set horizontal tolerance

Set vertical tolerance

Create the PASS/FAIL tolerance mask

Return to the

PASS/FAIL menu

More

1/2

---- Display the menu 2/2

100

Menu Operation

Press More 1/2 to display the MASK menu 2/2.

Softkey Options

Internal

Storage

External

Storage

More 2/2

----

----

----

----

Description

Store the PASS/FAIL tolerance mask to internal memory

Store the PASS/FAIL tolerance mask to external USB mass storage device

Return to the

PASS/FAIL menu

Display the menu page

1/2

101

Menu Operation

3.2 MEASURE Menu

MEASURE Menu key

Press MEASURE menu key to display the MEASURE menu.

Softkey

Source

Voltage

Time

Clear

Measure

All

Options

CH1

CH2

----

----

----

ON

OFF

Description

Measure CH1

Measure CH2

Select the Voltage measurement menu

Select the Time measurement menu

Turn off the current measurement readouts

Display all measurements

Close all measurements

102

Menu Operation

Voltage Measurements

Max

Peak-Peak Amplitude

High

Low

Min

Voltage parameter definitions

Press MEASURE

→ Voltage to display the VOLTAGE menu page 1/4.


The Peak-Peak value is

Peak-Peak ---- the difference between maximum and minimum values

Amplitude

Max

Min

----

----

----

The Amplitude value is the difference between

High and Low values

Max is the highest value in the waveform display

Min is the lowest value in the waveform display

More 1/4 ---- Display menu page 2/4

103

Menu Operation

Press More 1/4 softkey to display the VOLTAGE menu page

2/4.

Softkey Options

High

Low

Average

RMS

----

----

----

----

Description

High value is the mode

(most common value) of the upper part of the waveform

Low value is the mode

(most common value) of the lower part of the waveform

Average value is the sum of the samples divided by the number of samples over the entire waveform

RMS value is the true

Root Mean Square voltage over the entire waveform

More

2/4

---- Display menu page 3/4

104

Menu Operation


3/4.

Softkey Options

Cycle Avg

Cycle

RMS

Overshoot

Preshoot

More 3/4

----

----

----

----

----

Description

Cycle Avg value is the sum of the samples divided by the number of samples over one period

Cycle RMS value is the true Root Mean Square voltage over one period

Overshoot value is distortion that follows a major edge transition expressed as a percentage of amplitude

Preshoot value is distortion that precedes a major edge transition expressed as a percentage of amplitude

Display menu page 4/4

105

Menu Operation

Rising Edge Overshoot

= Max High ×

100

Amplitude

Falling Edge Overshoot

= Low Min ×

100

Amplitude

Overshoot

High

Low

Overshoot

Rising Edge Preshoot

= Low Min ×

100

Amplitude

Falling Edge Preshoot =

Max High ×

100

Amplitude

Preshoot

High

Low

Preshoot

106

Menu Operation


4/4.

Softkey Options

More 4/4

----

----

Description

Return to the MEASURE menu


Time Measurements

RiseTime FallTime

90%

50%

10%

+Width

Period

-Width

Time parameter definitions

107

Menu Operation

Press MEASURE

→ Time to display the TIME menu page

1/5.


Frequency

Period

Rise Time

Fall Time

More 1/5

----

----

----

----

----

Frequency is defined as

1/period of the first cycle

Period is the time period of the first complete waveform cycle

Rise Time is the time that the first positive- leading edge takes to rise from 10% to 90% of its amplitude

Fall Time is the time that the first negative-trailing edge takes to fall from

90% to 10% of its amplitude


108

Menu Operation

Press More 1/5 softkey to display the TIME menu page 2/5.


+Width ----

Positive Width is the time between the 50% amplitude points of the first positive pulse

-Width

+Duty

-Duty

More 2/5

----

----

----

----

Negative Width is the time between the 50% amplitude points of the first negative pulse

Positive Duty is the ratio of the first positive width to its period, expressed as a percentage

Negative Duty is the ratio of the first negative width to its period, expressed as a percentage


109

Menu Operation


Softkey Options

Delay

Delay

Delay

Delay

More 3/5

----

----

----

----

----

Description

The time between the

50% amplitude points of the first positive-leading edge of each channel

The time between the

50% amplitude points of the first negative-trailing edge of each channel

The time between the first positive-leading edge of CH1 and the first negative-trailing edge of

CH2 at each 50% amplitude point

The time between the first negative-trailing edge of CH1 and the first positive-leading edge of

CH2 at each 50% amplitude point


110

Menu Operation

CH1

Delay

CH2

Delay definition


Softkey Options

Phase

1

2

→2

Phase

→1

X at Max

X at Min

More 4/5

----

----

----

----

----

Description

Phase 1

→2 is the ratio of

Delay 1

→2 to the period of

CH1, expressed in degrees

Phase 2

→1 is the ratio of

Delay 2

→1 to the period of

CH2, expressed in degrees

X at Max is the X axis value

(refer to Trigger point) at the first displayed occurrence of the waveform

Maximum, starting from the left side of the display

X at Min is the X axis value

(refer to Trigger point) at the first displayed occurrence of the waveform

Minimum, starting from the left side of the display


111

Menu Operation

Phase 1

→ 2 = CH2 50% Time CH1 50% Time

×

360

CH1 Period

Phase 2

→ 1 = CH1 50% Time CH2 50% Time

×

360

CH2 Period

Period

CH1

Delay

CH2

Phase 1

→ 2 definition


Softkey Options

More 5/5

----

----

Description

Return to the MEASURE menu


112

Menu Operation

Automatic Measurement Procedure

Measure All:

Press MEASURE

→ Measure All to turn on all Auto

Measurements. Up to 20 kinds of measurements of current channel are displayed on the center of the screen.

Press Measure All again to turn off all Auto Measurements.

Display Measurements:

Press MEASURE

→ Voltage to display the VOLTAGE menu or press MEASURE

→ Time to display the TIME menu.

113

Menu Operation

Press softkey of voltage or time parameters you want to measure.

The selected parameter will be displayed on the bottom of the display.

Press Clear softkey to clear all displayed measurement parameter(s).

Note: Up to three parameters can be displayed simultaneously at the bottom of the display. Press the parameter softkey to add a new parameter when three parameters are already displayed. The first parameter will be pushed out of the display window and the new parameter will be displayed on the bottom right of the display screen.

Note: “****” will be displayed when a parameter can not be measured correctly.

114

Menu Operation

3.3 ACQUIRE Menu

Press the ACQUIRE menu key to show the ACQUIRE menu.

ACQUIRE Menu key

Press Mode softkey to select Normal mode.

Softkey

Mode

Sampling

Options

Normal

Description

Normal acquisition

Average Average acquisition

Peak Detect Peak detect acquisition

Equivalent Equivalent sampling

Real Time Real time sampling

Record ---- Select Record menu

Normal acquisition mode yields the best display for most waveforms.

115

Menu Operation

Average mode lets you average multiple triggers to reduce noise and increase resolution.

Peak Detect mode should be used to display narrow pulses that occur infrequently. It’s useful when looking for very narrow pulses at very slow time base.

Equivalent sampling mode is useful for displaying high frequency repetitive signals.

Real Time sampling mode is useful to capture the single-shot signals.

116

Menu Operation

Press Mode softkey to select Average mode.

Softkey

Mode

Averages

Sampling

Record


Normal Normal acquisition


Peak

Detect

Peak detect acquisition

Set the average number to 2, 4, 8, 16,

32, 64, 128, or 256



---- Select Record menu

Press Mode softkey to select Peak Detect mode.


Normal Normal acquisition

Mode

Sampling


Peak Peak detect

Detect acquisition



---- Select Record menu Record

117

Menu Operation

Connect a sine wave signal to the CH1 channel, press

ACQUIRE

→ Mode to select Average mode. Turn the Entry knob to set the number of averages to 16. The following two figures show the difference between Normal acquisition and Average acquisition.

Random noise on the displayed waveform

16 Averages used to reduce random noise

118

Menu Operation

Record Wavefrom

Press ACQUIRE

→ Record to show the RECORD menu.


Mode

Source

Interval

End

Frame

Operate

OFF

Turn off record function

Record Record the waveform

Play

Back

Save

/Recall

Playback recorded waveform

Save to/Recall from internal or external memory

CH1 Record CH1 channel

CH2 Record CH2 channel

Pass/Fail Record Pass/Fail

Out output waveform

Set the time interval





Maximum record frame

Record

Stop

119

Menu Operation

Playback Record

Press ACQUIRE


Press Mode softkey to select Playback function.



Play

Playback the record

Back

Mode

Operate

Play

Mode

Current

Frame

More 1/2

Save

/Recall

Save/Recall from internal or external memory

OFF Exit Record function

 Play

 Stop

----

Loop play

Single play

Select a specific frame


120

Menu Operation

Press ACQUIRE


Press Mode softkey to select Play Back function. Press More

1/2 softkey to show RECORD menu page 2/2.

Softkey Options

Interval

Start

Frame

End

Frame

Msg

Display

More

2/2

ON

OFF

----

Description

Interval between two frames

Set the start frame to playback

Set the end frame to playback

Record message on

Record message off


Note: The interval time must be greater than 1 ms + signal period + sampling interval time + frame storage time .

Note: Frame length is the waveform storage depth.

Maximum of 1000 frames of waveform can be stored.

121

Menu Operation

Save/Recall the Record

Press ACQUIRE


Press Mode softkey to select Save/Recall function.



Play back

Playback the record

Mode

Start

Frame

End

Frame

Save

/Recall


OFF Exit Record function

Set the start frame to save

Set the end frame to save

Internal

Storage

External

Storage

----

----

Save/Recall from internal memory

Save/Recall from external memory

122

Menu Operation

Exit Record Function

Press Mode softkey to select OFF option and return to the

ACQUIRE menu.



Play back Play back the record

Mode Save

/Recall

OFF

----


Exit Record function

Return to ACQUIRE menu

123

Menu Operation

3.4 SAVE/LOAD Menu

SAVE/LOAD MENU key

Press SAVE/LOAD key to display the SAVE/LOAD menu.


Internal

----

Display the INTERNAL

Storage menu

External

Storage

Factory

----

----

Display the EXTERNAL menu

Set the instrument to the factory default configuration

124

Menu Operation

Internal Storage

Saving/Loading Trace

Press SAVE/LOAD

→Internal Storage→Storage type to display the INTERNAL menu and select Trace storage type.


Storage type

Traces Trace file format

Setups Setup file format

Tracexx

Save ----

Select a trace file from

Trace01 to Trace10

Save the display to current trace file

Load ----

----

Load the current trace file

Return to the SAVE/LOAD menu

Note: A trace is similar to a reference waveform, except it only stores/recalls a trace of exactly what’s shown within the display frame only and not any other part of the record data. It cannot be adjusted with horizontal or vertical controls. To clear the trace on display, use the Clear

125

Menu Operation

Persistence softkey under the DISPLAY menu.

See “DISPLAY Menu” for details.

Saving/Loading Setups

Press SAVE/LOAD

→Internal Storage→Storage type to display the INTERNAL menu and select Setups storage type.

Softkey Options

Storage type

Traces Trace file format

Setups

Description

Setup file format

Setupxx

Save

Load

----

----

----

Select a setup file from

Setup01 to Setup10

Save the current configuration to the current setup file

Load from the current setup file


Note: Each setup stores all the horizontal, vertical, and trigger control settings. This includes and not limited to horizontal timebase, horizontal position, vertical scale, vertical position, and trigger position.

126

Menu Operation

External Storage

Press SAVE/LOAD

→External Storage to display the

EXTERNAL menu.


New

Rename

----

----

Create a new file or folder in the external memory

Rename the current file or folder

Load ----

Delete ----

----

Load the current file

Delete the current file or folder


Note: The External Storage menu and operations will not be available unless an external USB flash drive is connected and installed.

127

Menu Operation

Press SAVE/LOAD

→External Storage→New to display the

New menu.


New File

New

Folder

----

----

Display the New File menu

Display the New Folder menu.

----

Return to the EXTERNAL menu

Press SAVE/LOAD

→External Storage→New→New File to display the New File menu.

Softkey

Save as

Enter

Character

Delete

Character


Setups Save as setup files

Traces

Waveforms

Save as trace files

Save as waveform files

BMP(8bit) Save as 8-bit BMP files

BMP(24bit) Save as 24-bit BMP files

CSV Save as CSV files

Enter the selected

----

---- character and go to the next character position

Delete the selected character

128

Menu Operation

Save ---- Save the new file

---- Return to New menu

Note: Maximum length of a file name is 8 characters.

Press Enter Character to select a character position in the file name. Turn the entry knob to

select a character. Press Delect Character to

delete the current selected character. Press Enter

Character to enter the selected character and go to the next character position.

Press SAVE/LOAD

→External Storage→New→New Foler to display the New Folder menu.


Enter

Character

Delete

Character

----

----

Enter the selected character and go to the next character position


Save ---- Save the new folder

---- Return to the New menu

129

Menu Operation

Press SAVE/LOAD

→External Storage→Rename to display the Rename menu.

Softkey

Enter

Character

Delete

Character

OK

Options

----

----

----

----

Description

Enter the selected character and go to the next character position


Rename the selected file or folder

Return to the

EXTERNAL menu

Press SAVE/LOAD

→External Storage→Delete to display the Delete menu.


Confirm to delete the

OK ---- selected file or folder

Cancel ----

Cancel the delete operation

----

Return to the

EXTERNAL menu

130

Menu Operation

Firmware Update

1. Press SAVE/LOAD

→External Storage to display the

EXTERNAL menu.

2. Turn the entry knob to select the correct update file

(*.UPT).

3. Press Load softkey to start the update operation. A

Loading followed by an updating progress bar will be displayed to indicate update status.

4. When finished, a message “Restart to complete

updating” will be displayed to remind you to restart the instrument.

If the software update failed, repeat the above procedures to update again.

Note: The default file extension of the update file is ”.upt”.

Select the correct update file according to the model of the oscilloscope. Error message

“Incompatible file” will be displayed if the model does not match.

Note: The power supply of the oscilloscope must not be turned off during the updating process. If this happens, the update will fail and the instrument may fail to operate. In this case, you will have to return the instrument to factory for service.

131

Menu Operation

3.5 CURSOR Menu

You can measure waveform data using cursors. Cursors are horizontal and vertical markers that indicate X-axis values

(usually time) and Y-axis (usually voltage) on a selected waveform source. The position of the cursors can be moved by turning the entry knob .

Cursor Menu key

The oscilloscope provides three kinds of cursor measurement modes: Manual, Auto and Track.

132

Menu Operation

Manual Mode

Voltage Cursor Measurement

In the manual mode, you can move the cursors to measure the voltage or time on the select source waveform.

Press CURSOR

→Mode to display the CURSOR menu and select the Manual mode. Press the Type softkey to select

Voltage measurement.


Manual Manual cursor measurement

Mode Auto Auto cursor measurement

Track Track cursor measurement

Source

Type

Y1--

Y2--

CH1 Measure CH1

CH2 Measure CH2

MATH Measure MATH

Voltage Measure voltage value

Time Measure time value

Press this softkey to select

Y1, Y2, or both Y1 and Y2 cursors for adjustment.

Current voltage values for Y1 and Y2 are displayed in the softkey or on the top right

133

Menu Operation

ΔY

---- corner when menu is off

Displays the difference value between Y1 and Y2 cursors

Time Cursor Measurement

Press CURSOR

→Mode to display the CURSOR menu and select the Manual mode. Press the Type softkey to select

Time measurement.



Mode Auto Auto cursor measurement


Source

Type

X1--

X2--

CH1 Measure CH1

CH2 Measure CH1

MATH Measure MATH

Voltage Measure voltage value

Time Measure time value

Press this softkey to select X1,

X2, or both X1 and X2 cursors for adjustment.

Current time values for X1 and

X2 are displayed in the softkey

134

Menu Operation

ΔX

1/

ΔX

---- or on the top right corner when menu is off.

ΔX is the time difference value between X1 and X2 cursors

1/

ΔX is the frequency between

X1 and X2

Track Mode

Two cross hair cursors are displayed on the screen in the track mode. The cross hair cursors track the waveform automatically. You can move the cross hair cursors horizontally by turning the entry knob . The X,Y values of each cross hair cursor are displayed in the softkey area, or on the top right corner of the display when menu is off.

135

Menu Operation

Press CURSOR

→Mode to display the CURSOR menu and select the Track mode.


Mode


Auto Auto cursor measurement


Cursor A

Cursor B

Ax--

Ay--

Bx--

By--

CH1 Track CH1 with Cursor A

CH2 Track CH2 with Cursor A

None Turn off Cursor A

CH1 Track CH1 with Cursor B

CH2 Track CH2 with Cursor B

None Turn off Cursor B


Cursor A for adjustment. Current tracked X, Y axis point values of

Cursor A are displayed in the softkey or on the top right corner when menu is off


Cursor B for adjustment. Current tracked X, Y axis point values of

Cursor B are displayed in the softkey or on the top right corner when menu is off

136

Menu Operation

AUTO Mode

The Auto mode cursors are displayed only when auto measurement function is enabled. The oscilloscope displays the auto cursors corresponding to the latest auto measurement parameter. No Auto cursors will be displayed when no auto measurement parameter is selected.

137

Menu Operation

3.6 DISPLAY Menu

Display Menu key

138

Menu Operation

Press DISPLAY menu key to display the DISPLAY menu page 1/2.


Type

Vector

Dots

Vector mode fills the space between adjacent sample points in the waveform

Dot mode only displays the sample points

Persist

Clear

Persistence

Intensity

ON

OFF

----

The scope updates the waveform without erasing the previous sample points

Turn off the persistence function

Press to erase the previous sample points as well as the loaded trace waveform

Adjust the display intensity of waveforms

More 1/2 ---- Display menu page 2/2

139

Menu Operation

Press More 1/2 softkey to display the DISPLAY menu page

2/2.


Display both grids and axes

Turn off the axes

Grid

Turn off the grids

Turn off both grids and axes

Adjust the brightness of the grids

Brightness

Color

Setup

Menu

Display

More 2/2

----

----

Select Color scheme

Adjust the menu display time

Display menu page

1/2

140

Shortcut Menu

4 SHORTCUT MENU

(2540B/2542B only)

• CUSTOM Button

• MEASALL Button

• RECORD Button

• COUNTER/LOCAL Button

141

Shortcut Menu

4.1 Shortcut Controls

These four shortcut keys provide alternate quick access to some most frequently used functions or menus. These shortcuts and all details in this section apply to models

2540B and 2542B only.

CUSTOM Button

The Custom button allows the user to assign a shortcut from a list of menu categories as its function upon pressing it.

The button serves two functions: To assign shortcut and to be used as a shortcut key.

Before it can be used as a shortcut, the user must first enable and setup a shortcut for it from within the custom button menu.

142

Shortcut Menu

Custom Button Menu

To enter the custom button menu, press and hold down the

Custom key for two seconds or until the custom menu shown below displays on screen:

Softkey

Enable

Shortcut

Options

ON

OFF

---

Description

Enable custom shortcut key

Disable custom shortcut key

Assign shortcut to a selected sub-menu category using the

knob.

Shortcut

The available sub-menu categories that can be assigned as a shortcut are listed as follows:

• Service Menu

• I/O Setup

• Print Setup

• System Setup

• FFT

• Trigset Menu

• Clear Measurement (Clears any measurement that are currently displayed at the bottom of the grid)

• Full/Split Screen (for Math function only)

143

Shortcut Menu

Using Custom Button

After a shortcut has been assigned and the custom function has been enabled, users may now press the CUSTOM key

(do not hold down the key, otherwise the DSO will go back into the Custom menu) at any time to go to the assigned shortcut.

MEASALL Button

The MEASALL button is a shortcut key to toggle the display of the all measurement window. When pushed, it will show all measurements like the screen below:

144

Shortcut Menu

RECORD Button

The RECORD button is a shortcut key that directly enters into the Record sub-menu, allowing users to quickly adjust settings and begin a signal recording to capture and analyze data.

COUNTER/LOCAL Button

The COUNTER button serve two purpose. When not in remote mode, it functions as a shortcut key to turn on/off the hardware frequency counter display. When in remote mode, it will work as a secondary function (LOCAL), which sets the oscilloscope back to LOCAL mode whenever the oscilloscope is in remote mode (RMT). Setting the oscilloscope to local mode will unlock all front panel keys, allowing users to resume front panel operation.

145

Arbitrary Waveform Generator

5 ARBITRARY WAVEFORM

GENERATOR

(2540B-GEN/2542B-GEN only)

• Waveform Generator Controls

• Generator Menu

• Output Terminals

147


Note: All the contents in this chapter apply to models

2540B-GEN and 2542B-GEN only.

5.1 Waveform Generator Controls

These four buttons under the “Generator” group are used for setting up and controlling the built-in arbitrary waveform generator in models 2540B-GEN and 2542B-GEN.

MENU/GRAPH Button

This button has two functions:

- Access the generator menu (Primary function)

- Toggle graph illustration on display (Secondary function)

148


When the MENU button is pressed, the display will open up the generator menu that allows users to setup all supported parameters. See the next section for details.

Graph Display

When the MENU button is pressed and held for a few seconds, the secondary function will display a graphical illustration of the output. Below is an example screenshot of this display.

To close the display, simply press and hold the MENU button for a few seconds.

Note: Graph display may not be available for some

Output Type selections.

149


FREQ/CAPTURE Button


- Opens the generator menu and places the cursor on the frequency parameter (Primary function)

- Captures the signal on display and stores it into internal arbitrary waveform memory (Secondary function)

When FREQ button is pressed, the generator menu will automatically open up with the frequency related parameter highlighted and the cursor placed on the frequency. The

Output Type selected determines which frequency parameter will be highlighted, e.g. the carrier frequency parameter if output type is set to AM. When FREQ button is pressed and held for a few seconds, it will capture the signal on the display and save the data into internal arbitrary waveform memory. The signal source of the captured signal and the location it is stored to depend on the settings configured under the sub-menu for User ARB Output Type .

Essentially this secondary function works the same as the

Save option under Capture/Storage selection in the sub-menu for User ARB Output Type . See next section for details.

150


Note: The CAPTURE function only works when User

ARB is selected as the output type. For all other types, this function is not used.

AMPL/LOCAL Button


- Opens the generator menu with the amplitude parameter highlighted(Primary function)

- Sets the instrument back to Local mode when instrument is in remote mode (RMT) (Secondary function)

When AMPL button is pressed, the generator menu will automatically open up with the amplitude parameter highlighted and the cursor placed on the amplitude value.

The he Output Type setting determines which amplitude parameter will be highlighted, e.g. if output type is set to FM, then the carrier amplitude will be highlighted. When the instrument is in remote mode (indicated by RMT icon on the upper left corner of the display), pressing the AMPL button will set the unit back into local mode. This will also unlock all front panel keys as the instrument will no longer be in remote mode.

151


ON/OFF Button

When ON/OFF button is pressed, the generator output will turn ON and the configured waveform will be output from the

GEN OUT BNC terminal. Pressing it again will turn OFF the output.

5.2 Generator Menu

Press MENU button under the Generator group of the front panel to enter the generator menu from where all the parameter settings and controls can be accessed. Below are instructions for configuring various settings from the menu.

152


Sine Output

Press the Output Type softkey to select Sine waveform.

SINE menu will be displayed.

Softkey

Output

Type

Freq

Ampl

Offset

Description

Press Output Type to select a standard waveform or modulated signal to output

Press the Freq to select the frequency parameter. Use the left or right keys below the adjustment knob to change cursor selection (selection will be in red color) and rotate the adjustment knob to change the value of the selected digit. When a unit is selected (i.e. Hz, kHz, MHz), rotating the knob will change the parameter upward or downward by x10. Units will automatically change accordingly.

Press Ampl to select and change the amplitude parameter.

Press Offset to select and change the offset parameter.

153


Square Output

Press the Output Type softkey to select Square waveform,

SQUARE menu will be displayed.

Softkey

Output

Type

Freq

Ampl

Offset

Description


Press Freq to select the frequency parameter. Use the left or right keys below the adjustment knob

to change cursor selection

(selection will be in red color) and rotate the adjustment knob to change the value of the selected digit. When a unit is selected (i.e.

Hz, kHz, MHz), rotating the knob will change the parameter upward or downward by x10. Units will automatically change accordingly.



154


Pulse Output

Press the Output Type softkey to select Pulse waveform,

PULSE menu will be displayed.

Softkey

Output

Type

Freq /

Period

Description


Press this softkey to toggle selection between frequency and period parameter. Use the left or right keys below the adjustment knob to change cursor selection (selection will be in red color) and rotate the adjustment knob to change the value of the selected digit. When a unit is selected (i.e. Hz, kHz, MHz), rotating the knob will change the parameter upward or downward by x10. Units will automatically change accordingly.

Note: Only Period selection can be adjusted. Freq selection is for reading and display purposes only and reflects the frequency of the output

155


Ampl

Offset

Width/

Duty equivalent to the adjusted period from Period selection.



Press Width/Duty to select and change between the pulse width and duty.

Built-in Arbitrary Waveform Output

Press the Output Type softkey to select Built-in ARB waveform, ARB menu will be displayed.

Softkey

Output

Type

Waveform

Freq

Description


Press Waveform to select a built-in arbitrary waveform. The available waveform options are shown below.

Press this softkey to toggle selection between frequency and period parameter. Use the left or

156


Ampl

Offset right keys below the adjustment knob to change cursor selection (selection will be in red color) and rotate the adjustment knob to change the value of the selected digit. When a unit is selected (i.e. Hz, kHz, MHz), rotating the knob will change the parameter upward or downward by x10. Units will automatically change accordingly.



Built-in Arbitrary Waveforms

Below is a complete list of all the built-in arbitrary waveforms available for output.

Sine Square

157

Triangle

Down ramp

Negative pulse

Negative double pulse

Negative

DC

Half wave

Gate sine


Up ramp

Positive pulse

Positive double pulse

Positive

DC

Full wave

Clipped sine

158

SQRT

Exponential

(EXP)

Semicircle

Sinc

Duty 10%

Up step

Tri-pulse

Cosine

(COS)


Logarithmic

(LOG)

Tanh

Noise

Duty 90%

Down step

Trapezoidal

(Trapezia)

159

Thyristor

(SCR)


User Programmable Arbitrary Waveform Output

Press the Output Type softkey to select User ARB waveform,

ARB menu page 1/2 will be displayed.

Softkey

Output

Type

Freq

Ampl

Description


Press this softkey to toggle selection between frequency and period parameter. Use the left or right keys below the adjustment knob to change cursor selection (selection will be in red color) and rotate the adjustment knob to change the value of the selected digit. When a unit is selected (i.e. Hz, kHz, MHz), rotating the knob will change the parameter upward or downward by x10. Units will automatically change accordingly.


160


Offset

More

1/2


Select page 2/2

Press More 1/2 softkey to display the ARB menu page 2/2.

Softkey Options

Interpolation

ON

OFF

Description

With interpolation enabled, the waveform editor makes a straight-line connection between points.

With interpolation disabled, the waveform editor maintains a constant voltage level between points and creates a step waveform

Capture/

Storage

More

2/2

----

----

Select the ARB DATA menu

Select page 1/2

161


Capture/Storage

The capture/storage function allows users to store signals applied to the DSOs CH1 or CH2 into the built-in arbitrary waveform generator’s memory. Additionaly, a MATH function may be applided to the CH1 and CHs input signals before commiting it to the arbitrary memory

Press Capture/Storage softkey to display the ARB DATA menu.



Source CH2 Source signal CH2

MATH Source signal MATH

Date Type

Screen

Data

Currently displayed data on the screen.

Note: Although screen data contains up to 1200 pts, only 600 pts will be stored into internal arbitrary waveform memory. (See notes below)

Period

Data

One period of currently displayed data on the

162


Internal

Storage

External

Storage

----

----

---- screen. If the waveform is non-periodic, then the whole screen data is regarded as one period.

Enter the INTERNAL menu for arbitrary waveform save/ load operation.

For External Storage, refer to previous SAVE/LOAD menu operation. Users can store the data in .ARB or .CSV format, or load a .CSV file* into volatile memory (8000 pts maximum)

*Must be formatted correctly. Save an arb waveform into .CSV to see the format.

Note: .ARB format can only be opened or loaded from within the instrument.

Return to ARB menu.

163


Source : This is the source of the signal to be captured and stored into the built-in arbitrary waveform memory.

Date Type : This gives the user additional options on what data to capture from the selected source and stored into internal memory.

Note: Although screen data contains a total of 1200 pts, the captured waveform will be reduced to 600 pts by recalculating and averaging the original source data As a result, some source data f may be lost. . If you want to store all 1200 pts, use the SAVE/LOAD menu to save the data in a .CSV format to an external storage drive, then load the .CSV data from the ARB DATA menu into one of the arbitrary waveform memory storage locations.

Note: The captured waveform may look different from the original source due to internal scaling, limited by the vertical resolution of 8-bits and a sampling rate of 40 MSa/s. The displayable vertical data range is 28 to 228, (what you see on the screen)or a total of 200 vertical pixels. The actual arbitrary data is internally represented with 8-bit vertical resolution or 256 pixels (ranging from 0 to 255),

164


When the screen data is captured with a 200 pixels vertical resolution, it will internally rescale and store the arbitrary data to 256 pixels. This difference in total number of pixels causes the captured waveform to look different from the original source. To obtain the closest match between the captured waveform and its original source, the signal’s maximum amplitude and minimum amplitude must be adjusted at the top edge and bottom edge of the displayable graticule on screen respectively. For example, if your original source is a sine wave (either from CH1,

CH2, or MATH source), the displayable maximum amplitude should be at the very top edge of the graticule while the displayable minimum amplitude should be at the very bottom edge of the graticule. Below is an illustration of this.

165


Top edge

Displayable vertical data range

(200 pixels)

Bottom edge

Although there will be cases in which the original source signal cannot fit exactly at the maximum and minimum edge of the graticule like the illustration above, use the Ampl softkey in the

ARB menu to re-adjust the amplitude of your captured waveform.

166


Press Internal Storage softkey to display the INTERNAL menu.

Softkey Options

Storage

Pos

Save

Load

Copy

Volatile

User01-

User10

----

----

----

Description

File saved to volatile cannot be retrieved after power off.

Files saved to User01 to

User10 can be retrieved after power off (non-volatile).

Save the displayed screen waveform to the currently selected storage position.

Warning: This will also overwrite any waveform data that was previously stored in

the selected storage position.

Load the waveform from the currently selected position.

Copy the waveform from

Volatile memory to the currently selected storage position.

Note: Waveforms uploaded from Comsoft software are

stored in volatile memory.

---- Return to ARB DATA menu.

167


AM Modulation

Press the MENU key and press the Output Type softkey to select amplitude modulation, AM.

Softkey Options

Output

Type

Carrier

Shape

Carrier

Freq

Carrier

Ampl

More

1/2

----

Sine

Square

----

----

----

Description

Press Output Type select a standard waveform or modulated signal to output

Select sine waveform as the carrier waveform.

Select square waveform as the carrier waveform.

Select and specify the carrier frequency.

Select and specify the carrier amplitude.

Select page 2/2

168


Press More 1/2 softkey to display the AM menu page 2/2.

Softkey

Mod Shape

Mod Freq

AM Depth

Description

Select the modulating waveform from all built-in arbitrary waveforms.

Select and specify the modulating frequency.

Select and specify the modulation depth.

Offset Select and specify the offset voltage

More

2/2

Select page 1/2

Note: The modulation depth is expressed as a percentage and represents the extent of the amplitude variation. At 0% depth, the output amplitude is half of the selected value. At 100% depth, the output amplitude equals the selected value.

169


FM Modulation

Press the MENU key and press the Output Type softkey to select frequency modulation, FM.

Softkey Options

Output

Type

Carrier

Shape

Carrier

Freq

Carrier

Ampl

More

1/2

----

Sine

Square

----

----

----

Description


Select a sine waveform as the carrier waveform.

Select a square waveform as the carrier waveform.



Select page 2/2

170


Press More 1/2 softkey to display the FM menu page 2/2.

Softkey

Mod Shape

Mod Freq

FM Dev

Description

Select the modulating waveform from all built-in arbitrary waveforms


Select and specify the frequency deviation.

Offset Select and specify the offset voltage.

More

2/2

Select page 1/2

Note: The frequency deviation is expressed as a percentage and represents the peak variation in frequency of the modulated waveform from the carrier frequency.

171


Pulse Width Modulation

Press MENU key and press the Output Type softkey to select pulse width modulation, PWM.

Softkey

Output Type

Carrier Freq

Carrier Ampl

Width/

Duty

Description

Press Output Type to select a standard waveform or modulated signal to output.



Press Width/Duty to select and change the pulse width/duty.

More 1/2 Select page 2/2

172


Press More 1/2 softkey to display the PWM menu page 2/2.

Softkey

Mod Shape

Mod Freq

Width Dev

Description

Select the modulating waveform from all built-in arbitrary waveforms..


Select and specify the pulse width deviation.


More 2/2 Select page 1/2

Note: The width deviation is expressed as a percentage and represents the maximum variation in width () in the modulated waveform from the width of the original pulse waveform.

173


DC Offset Modulation (DCOM)

This mode sums the carrier waveform with the modulating waveform and outputs the sum of the 2 waveforms.

Press MENU key and press the Output Type softkey to select DC offset modulation, DCOM.

Softkey Options

Output

Type

----

Description


Carrier

Shape

Carrier

Freq

Carrier

Ampl

More

1/2

Sine

Square

----

----

----

Select sine waveform as the carrier waveform.

Select square waveform as the carrier waveform.



Select page 2/2

174


Press More 1/2 softkey to display the DCOM menu page 2/2.

Softkey

Mod

Shape

Mod Freq

Description

Select the modulating waveform function from all built-in arbitrary waveforms.


More

2/2

Select page 1/2

Note: DC offset modulation can be used as an alternative way of adding noise to a sine or square waveform. For example, to add noise to a sine wave, set the Carrier Shape to Sine and the

Modulation shape to Noise.

175


Frequency Sweep

Press the MENU key and press the Output Type softkey to select SWEEP function, SWEEP.

Softkey Options

Output

Type

Waveform

----

Sine

Description


Select sine waveform as the sweep waveform.

Start Freq

Square

----

Select square waveform as the sweep waveform.

Select and specify the start frequency.

Stop Freq ----

Select and specify the stop frequency.

More

1/2


176


Press More 1/2 softkey to display the SWEEP menu page

2/2.

Softkey

Sweep

Mode

Sweep

Time

Sweep

Ampl

Offset

Options

Up

Down

Up-Down

----

----

----

Description

Sweep from start frequency to stop frequency.

Sweep from stop frequency to start frequency.

Sweep up and down between start and stop frequencies.

It will sweep up first, and then down.

Select and specify the sweep time from start to stop frequency.

Select and specify the waveform amplitude.

Select and specify the offset voltage.

More

2/2


Note: The sweep time specifies the number of seconds required to sweep from the start frequency to the stop frequency. The number of discrete frequency points in the sweep is automatically calculated according to the sweep time you select.

177


Burst Frequency

Press MENU key and press the Output Type softkey to select BURST function, and BURST menu page 1/2 will be displayed.

Softkey

Output

Type

Waveform

Freq

Ampl

Description

Press Output Type softkey to select a standard waveform or modulated signal to output

Select a waveform as the burst waveform.

Select and specify the waveform frequency.

Select and specify the waveform amplitude.

More

1/2

Select page 2/2

178


Press More 1/2 softkey to display the BURST menu page

2/2.

Softkey

Cycles

Description

Select and specify the burst count

(number of bursts).

Burst Freq Select and specify the burst rate


More

2/2

Select page 1/2

Note: The burst frequency defines the rate of consecutive bursts. This is different from the frequency of the waveform.

179


FSK and PSK Modulation

Press MENU key and press the Output Type softkey to select Keying modulation, KEYING menu page 1/2 will be displayed.

Carrier

Freq

Softkey Options

Output

Type

Keying

Type

Carrier

Ampl

More

1/2

----

FSK

PSK

----

----

----

Description


Select Frequency Shift Keying modulation.

Select Phase Shift Keying modulation.

Select and specify the carrier waveform frequency.

Select and specify the carrier waveform amplitude.

Select page 2/2

180


Press More 1/2 softkey to display the KEYING menu page

2/2.

Softkey

Hop Freq/

Hop Phase

Interval

Description

FSK Modulation: Specify the hop frequency.

PSK Modulation: Specify the hop phase.

Select and specify the time interval between two frequency shifts.

Select and specify the offset voltage. Offset

More

2/2

Select page 1/2

181


5.3 Output Terminals

GEN OUT

Generator BNC output

This is the main output of the arbitrary waveform generator.

When the MENU button is pressed and is lit, the configured waveform will output from this terminal. The output impedance is 50 ohm

MOD OUT

Modulation BNC output

182


This is the generator’ s modulating waveform output. This terminal also serves as as the external trigger input for the oscilloscope. When Trigger Source in the Trigger menu is set to EXT or EXT/5, this terminal will function as an external trigger input for the oscilloscope. When it is set to all other sources, it will function as the modulating waveform output from the generator.

183

Quick Start Guide

6 QUICK START GUIDE

• Application Examples

-

Making Simple Measurements

-

Capture Single Shot Signal

-

Reduce Random Noise on a Signal

-

Triggering a Video Signal

-

PASS/FAIL Measurement

-

Using Waveform Recorder

-

Making Cursor Measurements

• Generator Application Examples

-

Output Basic Sine Waveform

-

Output Amplitude Modulated Waveform

-

Create Waveform with Added Noise

-

Capture and Output Math Waveform

185

Quick Start Guide

6.1 Making Simple Measurements

This section provides instructions for measuring the amplitude and frequency of an unknown signal on CH1.

Perform the following steps to quickly display the signal.

 Connect the channel 1 probe to the unknown signal.

 Press the AUTO key.

The oscilloscope automatically sets vertical, horizontal, and trigger controls. You can adjust any of these controls manually if you need to optimize the display of the waveform.

When you are using both CH1 and CH2 channels, the

Autoset function sets the vertical controls for each channel and uses the CH1 channel to set the horizontal and trigger controls.

The oscilloscope can take automatic measurements of the displayed signals. Perform the following steps to measure signal amplitude and frequency.

 Press the MEASURE key to display the MEASURE menu.

 Press the Voltage softkey to display the VOLTAGE menu.

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Quick Start Guide

 Press the Amplitude softkey to measure the Amplitude.

The amplitude value will be displayed at the bottom of the screen.

 Press MEASURE key again to display the MEASURE menu.

 Press Time softkey to display the TIME menu.

 Press the Frequency softkey to measure the frequency.

The frequency value will be displayed at the bottom of the screen to the right of the voltage value.

187

Quick Start Guide

6.2 Capture Single Shot Signal

Digital Storage Oscilloscope can easily be used to capture a single-shot or unrepeatable signal. Perform the following steps to capture a single-shot signal.

 Connect the channel 1 probe to the unknown signal.

 Press the trigger MENU key to display the TRIGGER menu.

 Press the Source softkey to select CH1.

 Press the Mode softkey to select the Auto trigger mode.

 Adjust the vertical and horizontal controls to observe the signal roughly and find out the right Trigger Type and

Trigger mode.

 Press the Type softkey from the TRIGGER menu page to select Pulse trigger type.

 Press More 1/2 sofkey to display the TRIGGER menu page 2/2.

 Press Mode softkey to select Normal Trigger mode.

 Press More 2/2 sofkey to display the TRIGGER menu page 1/2.

 Press Pulse Mode softkey to select (positive less than).

 Rotate the entry knob ( ) to set up the pulse width.

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Quick Start Guide

 Press the SINGLE key to start the acquisition system and search for the trigger condition. The SINGLE key will be illuminated in orange.

 When trigger condition is met, the captured waveform will be displayed, the SINGLE key will no longer be lit, and the RUN/STOP key will illuminate in red.

189

Quick Start Guide

6.3 Reduce Random Noise on a Signal

If the test signal is noisy, you can set up the oscilloscope to reduce the noise on the displayed waveform. First, you stablize the displayed waveform by removing the noise from the trigger path. Second, you reduce the noise on the displayed waveform.

 Connect a signal to the oscilloscope. Press AUTO key to display the signal quickly.

 Press the Trigger MENU key to display the TRIGGER menu.

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Quick Start Guide

 Press Type softkey to select Edge trigger type.

 Press Trigger Setup softkey to display the trigger

SETUP menu

 Press Coupling softkey to select HF Reject or LF

Reject coupling mode to reduce the noise from the trigger channel.

 Press the ACQUIRE key to display the ACQUIRE menu.

 Press the Mode softkey to select Average mode.

 Rotate the entry knob ( ) to set the number of averages that best eliminates the noise from the displayed waveform.

191

Quick Start Guide

6.4 Triggering a Video Signal

Video trigger can be used to capture the standard video signals. The trigger circuit detects the vertical and horizontal interval of the waveform and produces triggers based on the

Video trigger setting you have selected.

Trigger on Odd or Even Fields of the Video Signal


 Press the Type softkey to select the Video trigger mode.

 Press Source softkey to select CH1.

 Press Polarity softkey to select negative polarity .

 Press Sync softkey to select Odd Field or Even Field.

192

Quick Start Guide

Trigger on a Specific Line or All Lines of the Video Signal


 Press the Type softkey to select the Video trigger mode.


 Press Polarity softkey to select negative polarity .

 Press Sync softkey to select Line # or All Lines.

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Quick Start Guide

6.5 PASS/FAIL Measurement

The oscilloscope measures and compares the input signal with predefined Pass/Fail thresholds. If the input signal is within the thresholds, PASS signal will be outputted. If the input signal exceeds the thresholds, FAIL signal will be outputted.

Perform the following steps to make a PASS/FAIL measurement.

 Press UTILITY key to display the UTILITY menu page

1/2.

 Press More 1/2 softkey to display the UTILITY menu page 2/2.

 Press Pass/Fail softkey to display the PASS/FAIL menu.

 Press Enable Test softkey to turn on the PASS/FAIL measurement.

 Press Setup Mask softkey to display the MASK menu.

 Press X Mask softkey and then rotate the entry knob to setup the horizontal threshold.

 Press Y Mask softkey and then rotate the entry knob to setup the vertical threshold.

 Press Creat Mask softkey to update the thresholds.

 Press softkey to return to the PASS/FAIL menu.

194

Quick Start Guide

 Press More 1/2 softkey to display the PASS/FAIL menu page 2/2.

 Press Msg Display softkey to display the Pass/Fail measurement results on the top left corner of the screen.

 Press the Output softkey to set how to output the measurement results.

 Press More 2/2 to display the PASS/FAIL menu page

1/2.

 Press the Operate softkey to start PASS/FAIL measurement.

195

Quick Start Guide

6.6 Using Waveform Recorder

Waveform recorder lets you record waveforms, playback waveforms, and save waveforms. Perform the following steps to record waveforms.


 Press the RECORD softkey to display the RECORD menu.

 Press the Mode softkey to select Record mode.

 Press the Source softkey to select the source channel

CH1.

 Press the Operate key to start recording, and the total recorded frame count will be displayed on the top left screen. Press the Operate key again to stop recording.

196

Quick Start Guide

Perform the following steps to playback the waveforms.


 Press the RECORD softkey to display the RECORD menu.

 Press the Mode softkey to select Play back mode.

 Press Play Mode softkey to select or mode.

 Press the More 1/2 softkey to display the RECORD menu page 2/2.

 Press Start Frame softkey and turn the entry knob to set the start frame.

 Press End Frame softkey and turn the entry knob to set the end frame.

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Quick Start Guide

 Press Interval softkey and turn the entry knob to set the interval time.

 Press the More 2/2 softkey to display the RECORD menu page 1/2.

 Press Operate softkey to playback the waveform.

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Quick Start Guide

Perform the following steps to save the waveform recorded.


 Press the RECORD softkey to display the RECORD menu page 1/2.

 Press the Mode softkey to select Save/Recall mode.

 Press Start Frame softkey and turn the entry knob to set the start frame.

 Press End Frame softkey and turn the entry knob to set the end frame.

 Press the Internal Storage softkey to Save or Load the recorded waveform from the internal memory.

199

Quick Start Guide

6.7 Making Cursor Measurements

You can use the cursors to quickly make time and voltage measurements on a waveform. You can use the cursors to measure the amplitude and frequency of a FFT waveform.

You can also use the cursors to measure the phase difference between two signals with the same frequency when X-Y horizontal mode is selected.

Measure the time and voltage on normal waveform

Perform the following steps to take time and frequency measurements.

 Press the CURSOR key to display the CURSOR menu.

 Press Mode softkey to select the Manual mode.

 Press Type softkey to select the Time type.

 Press X1--/ X2—softkey or press the entry knob to select X1 cursor.

 Rotate the entry knob to move the X1 cursor.



 ΔX and 1/ΔX are displayed in the softkey area. ΔX is the time difference between X1 and X2;

1/ΔX is the frequency between X1 and X2.

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Quick Start Guide

Perform the following steps to take voltage measurement.



 Press Type softkey to select the Voltage type.

 Press Y1--/ Y2—softkey or press the entry knob to select Y1 cursor.

 Rotate the entry knob to move the Y1 cursor.



 ΔY displayed in the softkey area is the voltage difference between Y1 and Y2.

201

Quick Start Guide

Measure the frequency and amplitude on FFT waveform

Perform the following steps to take frequency measurement.

 Press the MATH key to display the Math menu.

 Press the Operate softkey to select FFT and display the

FFT menu.



 Press Source softkey to select FFT.

 Press Type softkey to select the Time type.





 ΔX displayed in the softkey area is the frequency difference between X1 and X2.

1/ΔX is the time difference between X1 and X2.

Perform the following steps to take voltage measurement.

 Press the MATH key to display the Math menu.

 Press the Operate softkey to select FFT and display the

FFT menu.



202

Quick Start Guide

 Press Source softkey to select FFT.






 ΔY displayed in the softkey area is the voltage difference between Y1 and Y2.

203

Quick Start Guide

Measure the phase difference between two signals of the same frequency under X-Y display mode.

 Connect a sine wave signal to CH1 and a sine wave signal of the same frequency but out of phase to CH2.

 Press horizontal MENU key to display the Horizontal menu.

 Press X-Y softkey to select X-Y display mode

 Center the signal on the display with the vertical control knob of each channel.

 Use the vertical scale control knob of each channel to expand the signal for convenient view.






 Rotate the entry knob to move the Y1 cursor to the top of the signal.


 Rotate the entry knob to move the Y2 cursor to the bottom of the signal.

 ΔY displayed in the softkey area is the voltage difference

D (or 2B) between Y1 and Y2.

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Quick Start Guide


 Rotate the entry knob to move the Y1 cursor to the upper intersection of the signal and Y axis.


 Rotate the entry knob to move the Y2 cursor to the lower intersection of the signal and Y axis.

 ΔY displayed in the softkey area is the voltage difference

C (or 2A) between Y1 and Y2.

 Calculate the phase difference using the formula below.

θ

= ± arcsin

C

D

or

θ

= arcsin

A

.

B

205

Quick Start Guide

6.8 Output Basic Sine Waveform

This application example describes how to use the generator to output a sine waveform with 10 kHz frequency, 6 Vpp amplitude and 1 Vdc offset voltage.

Perform the following steps to output the specified sine waveform.

 Connect the WG Output teminal to CH1 terminal.

 Press ON/OFF key to enable signal output.

 Press the MENU key to display the arbitrary waveform generator menu.

 Press Output Type softkey to select the Sine waveform.

 Press Freq softkey to select and specify the frequency to

10 kHz.

 Press Ampl softkey to select and specify the amplitude to 6 Vpp

 Press Offset softkey to select and specify the offset voltage to 1 Vdc

 Press the GRAPH key to enable the Graph display.

206

Quick Start Guide

6.9 Output Amplitude Modulated

Waveform

This application example describes how to use the generator to output an amplitude modulated waveform with 100% modulation depth, 10 kHz carrier frequency, 600 mV carrier amplitude, 100 Hz modulating frequency and 0.0 mVdc offset.

207

Quick Start Guide

Perform the following steps to output the amplitude modulated waveform.

 Connect the WG Output teminal to CH1 terminal.

 Press ON/OFF key to enable signal output.

 Press the MENU key to display the arbitrary waveform generator menu.

 Press Output Type softkey to select AM modulation.

 Press Carrier Freq softkey to select and specify the carrier frequency to 10 kHz.

 Press Carrier Ampl softkey to select and specify the carrier amplitude to 600 mVpp.

 Press More 1/2 softkey to display the AM menu page

2/2.

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Quick Start Guide

 Press Mod Shape softkey and select Sine as the modulating waveform shape.

 Press Mod Freq softkey to select and specify the modulating waveform frequency to 100 Hz.

 Press AM Depth softkey to select and specify the modulation depth to 100%.

 Press Offset softkey to select and specify the offset voltage to 0.0 mVdc

209

Quick Start Guide

6.10 Create Waveform with Added Noise

This section will demonstrate a quick way to create a sine wave with added random noise. In this example, we will create this waveform with a frequency of 1 kHz and amplitude of 2 Vpp.

Follow the steps below:

1. Press the MENU key to enter the ARB menu, and set

Output Type to DCOM.

2. Select Carrier Shape softkey and set it to Sine.

3. Set the Carrier Freq to 1.000000 kHz, and set

Carrier Ampl to 2.000 Vpp.

4. Then, select More 1/2 softkey and set Mod Shape parameter to Noise. You can also change the frequency of the noise waveform by selecting and specifying Mod Freq parameter.

5. Now, press the ON/OFF key to turn on the generator output, and the waveform will be a sine wave with noise added as illustrated below.

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Quick Start Guide

6.11 Capture and Output Math Waveform

This section will demonstrate an example of capturing a Math waveform output that is internally calculated between two channels of the oscilloscope and storing it into arbitrary waveform memory for output from the generator. In this example, CH1 and CH2 signals will be added together to create the Math waveform.

Follow the steps below:

1. Press the MATH key to enter the MATH menu, and set Operate parameter to A+B.

211

Quick Start Guide

2. Press the MENU key and select Output Type to be

User ARB.

3. Then, select More 1/2 softkey and select

Capture/Storage softkey.

4. Press the Source softkey and select A+B.

Note: This selection will change depending on the

Operate parameter set under MATH menu.

5. Select Data Type as Period Data if you want to store a complete period of the CH1+CH2 waveform, or select Screen Data to capture only what’s displayed on the screen.

6. Then press Internal Storage and change Storage

Pos to the memory location to store the waveform to.

7. Press Save and the CH1+CH2 waveform will be saved into internal arbitrary waveform memory, which can be recalled and output.

Note: The captured Math waveform will be limited to 600 points, and some scaling is done internally. See

the “Capture/Storage” section for details.

212

Remote Control

7 REMOTE CONTROL

• Comsoft Software

• Web Browser GUI (Graphic user Interface)

213

Remote Control

7.1 Comsoft Software

The 2540B and 2542B comes with Comsoft application software which provides most of the controls of the oscilloscope’s display, measurements, waveform data, and front panel emulation control through the USB device port in the rear panel. It also supports creating and *uploading arbitrary waveforms for models 2540B-GEN and

2542B-GEN.

*Uploads up to 8kpts into volatile memory.

The software is free and can be downloaded at www.bkprecision.com

7.2 Web Browser GUI

The DSO has a build-in web browser interface that can be used for some basic LAN configurations and quick screenshot capture via LAN interface at the rear panel.

To access, simply set the DSO to LAN interface and

configure all the necessary settings (see “I/O Setup” section).

Noting the IP address configured on the oscilloscope, enter it at the address bar of a Java enabled web browser for access.

214

Troubleshooting Guide

8 TROUBLESHOOTING GUIDE

• System Messages

• General Problems

215


8.1 System Message

Function is not available: The control knob, key, or softkey is not available under a specific operating condition. This message will be displayed when you try to operate these knob, key , or softkey.

The control is at its limit: This message will be displayed when the maximum or minimum value has reached from turning the Entry knob, Vertical Control knobs, Horizontal

Control knobs, or Trigger Level knob.

Total is at its maximum: This message will be displayed when the maximum value of Total count for PASS/FAIL has reached.

Record is completed: This message will be displayed when the number of waveforms (set in the End Frame softkey) have been recorded or when you press the Operate softkey to stop the record process manually.

No external memory: This message will be displayd when you try to save a file to an external mass storage device which has not been installed.

Save error: This message will be displayed when you fail to save a file to the internal or external memory.

216


Empty storage memory: This message will be displayed when you try to load a file which does not exist from the internal memory.

Unrecognized file: This message will be displayed when you try to load a file which can not be recognized by the oscilloscope from the external memory.

Update failed: This message will be displayed when firmware update has failed.

No record data: This message will be displayed when you try to save or playback a record without recorded data.

Record is aborted: This message will be displayed when

Operate softkey is pressed to stop record process without any waveform data recorded.

Factory setup is recalled: This message will be displayed when the default factory configuration is recalled.

No signal is found: This message will be displayed when you press the AUTO key without any signal connected to each channel.

Invalid data: This message will be displayed when you try to save a *.CSV , *.TRC or *.WFM file without any valid waveform data.

217


Load finished: This message will be displayed when a file has been successfully loaded from the internal or external memory.

Save finished: This message will be displayed when a file has been successfully saved to the internal or external memory.

Incompatible file: This message will be displayed when the update firmware file does not match with the model type.

Load error: This message will be displayed when you fail to load a file from the internal or external memory.

Restart to complete updating: This message is to inform the user to restart the oscilloscope after a firmware update to finish the process.

USB device is installed: This message will be displayed when a USB device is connected and recognized by the oscilloscope.

USB device is removed: This message will be displayed when a USB device is removed from the oscilloscope.

USB error: This message will be displayed when the USB control circuit is not working normally.

218


No help file: This message will be displayed when no help file is loaded or the loaded help file is corrupted.

Digital filter is closed: This message will be displayed when digital filter is closed automatically.

219


8.2 General Problems

If there is no display on the screen:

• Check that the power cord is connected to the oscilloscope and to a live power source.

• Check that the power switch is on.

If there is no waveform displayed:

• Check that the oscilloscope probe is securely inserted into the connector assembly and that the probe clips make good contact with the probe lead wires.

• Check that the probe clips are securely connected to points in the circuit under test and that the ground is connected.

• Check that the circuit under test is powered on.

• Press the AUTO key again.

If the waveform display is not stable:

• Check that the trigger source channel is actually the channel to which the trigger signal is connected.

• Check that the proper trigger type is selected. Video type is only used to trigger a Video signal. Proper trigger type is essential to acquire a stable display.

• Try to use the HF Reject or LF Reject to reduce the noise of the trigger signal.

220


If the amplitude is not identical with the actual voltage

• Check that the attenuation factor of the probe is identical with the attenuation factor set in the channel menu.

If instrument is not connected over LAN

• Try using DHCP if not already.

• Reboot the instrument, then try again.

How do I extract the deep memory from the DSO?

• This can only be extracted using provided PC software.

It cannot be exported directly to a connected front USB flash drive.

221

Specifications

9 SPECIFICATIONS

• Digital Storage Oscilloscope Specifications

• Arbitrary Waveform Generator Specifications

• General Specifications

223

Specifications

9.1 Digital Storage Oscilloscope

Specifications

All specifications are typical performance values and are not warranted. Specifications are valid after a 30 minute warm-up time and within ± 5°C of last “Self-Cal” temperature.

Vertical system

Scope channels

Bandwidth

2 channels plus external trigger input

60 MHz:

100 MHz:

2540B, 2540B-GEN

2542B, 2542B-GEN

< 5.83 ns:

Calculated rise time

(=0.35/bandwidth) < 3.50 ns:

2540B, 2540B-GEN

2542B, 2542B-GEN

Coupling

BW Limit

DC Vertical Gain

Accuracy

DC Measurement

Position range

AC, DC and GND

20 MHz selectable

2 mV/div, 5 mV/div: ±4 %

10 mV/div to 5 V/div: ±3 %

2 mV/div to 5 mV/div:

±(4% x reading + 0.1 x V/div + 0.5 mV)

10 mV/div to 5 V/div:

±(3% x reading + 0.1 x V/div + 1.0 mV)

±8 divisions away from the center of the screen

224

Specifications

Attenuation factor X1, X10, X100, X1000

Channel common mode rejection

Lower frequency limit, AC coupled

Channel to channel crosstalk

Input Impedance

Maximum input

100:1 at 60 Hz

20:1 at 10 MHz

[1]

≤ 5 Hz at BNC

≤ 1 Hz when using a 10X passive probe

≥ 100:1 at 1 MHz

≥ 100:1 at 10 MHz [1]

1 M

Ω ||18 pF

400 V pk

@1 M

Ω

±150 ps when vertical scale and coupling

Differential delay settings are identical

[1]

Bandwidth reduced to 6 MHz with a 1X probe.

Horizontal system

Time base range

(1-2-5 step)

2 ns/div to 50 s/div

Modes

Time base accuracy

Input of X-Y mode

Bandwidth of X-Y mode

Main, Delayed, Roll and X-Y

± 0.01 %

Channel 1 is the horizontal X-axis input

Channel 2 is the vertical Y-axis input

60 MHz:

100 MHz:

2540B, 2540B-GEN

2542B, 2542B-GEN

Phase error of X-Y mode ± 3°

225

Specifications

Measurements

Voltage measurement

Time measurement

Math

Cursors

Counter

Max, Min, VPP, High, Low, Amplitude,

Average, RMS, Overshoot, Preshoot, Cycle average, Cycle RMS

Frequency, Period, Rise time, Fall time,

+Width, -Width, +Duty, -Duty, Delay, Phase,

X@MAX, X@MIN

A+B, A-B, A×B, FFT (1024 points)

Manual, Auto, and Track

Built-in 5-digit frequency counter. Count up to the oscilloscope’s maximum bandwidth.

226

Specifications

Trigger system

Source

Modes

Coupling

Type

CH1, CH2, EXT, EXT/5, AC Line, Alternating

Auto, Normal, Single

DC, AC, LF-Reject, HF-Reject

Edge, Pulse, Video

Trigger level range

Internal: ±8 divisions from screen center

EXT: ±1.6 V

EXT/5: ±8 V

Trigger sensitivity 0.1 div to 1.0 div user adjustable

EXT input impedance 1 M

Ω || 18 pF

EXT maximum input 400 V pk

@1 M

Ω

Supports NTSC, PAL, and SECAM broadcast

Video Standard systems for any field or any line

Holdoff Range 100 ns to 1.5 s

Trigger Level

Internal: ±0.3 div x Volts/div

Accuracy

SET LEVEL TO 50% Operates with input signal

≥ 50 Hz

Pulse Width Trigger when Less than, Greater than, Equal,

Trigger mode Positive pulse , Negative pulse

Pulse Width Range 20 ns to 10 s

227

Specifications

Storage and I/O

Internal memory

External storage file format

Standard interface ports

10 setups and trace files can be saved and recalled internally.

Setup file(*.STP), Waveform file(*.WFM), Trace file(*.TRC), BMP file(*.BMP), **CSV file(*.CSV)

USB host

USB device

RS232C

PASS/FAIL OUT (BNC)

LAN

**Maximum number of data points that can be stored into a .CSV file on an external USB storage device is 1200 points.

228

Specifications

Acquisition system

Max real time

1 GSa/s sample rate

Max equivalent sample rate

50 GSa/s

1 GSa/s: 16 kpts

500 MSa/s: 8 kpts (dual channel)

Max memory depth

(Based on Sample rate)

500 MSa/s: *2.4 Mpts (single channel)

≤ 250 MSa/s: *1.2 Mpts (single and dual channel operation)

Vertical resolution

Sample mode

Autoset

8 bits

Normal, Average, Peak Detect

Finds and displays all active channels, sets edge trigger mode on channel 1, set vertical sensitivity on scope channels and time base to display one or five periods.

Requires minimum voltage >10 mVpp, 0.5% duty and minimum frequency >50 Hz.

*Maximum number of points can only be extracted via remote control using the USB, RS232C, or LAN interface.

229

Specifications

Display system

Display

Resolution

Colour

Brightness

Language

Display area

Display mode

Interpolation

Persistence

5.7-inch TFT LCD display.

234 vertical by 320 horizontal pixels

24 bit true color

Adjustable

Simplified Chinese, Traditional Chinese, English,

Korean, Japanese, Russian, French, Spanish,

Polish, Portuguese

Menu ON:

8 vertical by 10 horizontal divisions or 200 vertical by 250 horizontal pixels

Menu OFF:

8 vertical by 12 horizontal divisions or 200 vertical by 300 horizontal pixels

Vector, Dots

Sinx/x, Linear

OFF, Infinite persistence

230

Specifications

9.2 Arbitrary Waveform Generator

Specifications

Note: The specifications in this section apply to models

2540B-GEN and 2542B-GEN only.

Frequency Characteristics

Sine waveform

Square waveform

1

μHz to 20 MHz (2540B-GEN)

1

μHz to 40 MHz (2542B-GEN)

1

μHz to 20 MHz

Pulse waveform 1 mHz to 10 MHz

Built-in AWG 1 mHz to 1 MHz

User AWG 1 mHz to 1 MHz

Sine, Square: 1

μHz

Frequency resolution

Pulse, Built-in ARB, User ARB: 1 mHz

Frequency accuracy

≤ ± 5 x 10 -4

Frequency stability ± 5 x 10

-5

Waveform Characteristics

Harmonic Distortion

Total harmonic

< 5 MHz: -50 dBc

≤10 MHz: -45 dBc

>10 MHz: -40 dBc

20 Hz to100 kHz:

≤ 0.2%

231

Specifications distortion

Rise / Fall time

(square)

< 20 ns

Pulse Characteristics

Duty Cycle

Width

0.01 % to 99.99 %

10 ns to 999.99 s

Arbitrary Characteristics

Sampling Rate

Vertical Resolution

40 MSa/s

8 bits

Waveform Length

Non-volatile Memory

8192 points *)

10 waveforms

*) The internal memory size is 8192 points, however

Comsoft and .CSV file upload supports only 8000 points.

Amplitude Characteristics

Generator Output (GEN Out)

Amplitude range

Max resolution

Amplitude accuracy

When freq.

≤ 20 MHz: 2 mVpp to 20 Vpp

(open circuit), 1 mVpp to 10 Vpp (50

Ω)

When freq. > 20 MHz: 2 mVpp to 6 Vpp

(open circuit), 1 mVpp to 3 Vpp (50

Ω)

1

μVpp

≤ ± 5% ±1 mV @1 kHz sine waveform

232

Specifications

Amplitude stability

Amplitude flatness

Amplitude flatness

(Built-in ARB, User

ARB)

Output impedance

± 2% in 4 hours

When freq.

≤ 5 MHz: ± 5%

When freq. > 5 MHz: ± 10%

When freq.

≤ 50 kHz: ± 5%

When freq. > 50 kHz: ± 20%

50

Ω

Modulating Waveform Output (Mod Out)

Waveforms

Output Amplitude

Output Impedance

All 30 built-in arbitary waveforms

5 Vpp ± 20 %

600 Ω

AM, FM, PWM and DCOM Modulation Characteristics

AM FM DCOM PWM

Sine, Square Pulse Carrier waveforms

Modulating waveforms

Modulation frequency

All built-in arbitrary waveforms

1 mHz to 1 MHz

Built-in arbitrary waveforms are: Sine, Square, Triangle, Up ramp, Down ramp, Positive pulse, Negative pulse, Positive double pulse, Negative double pulse, Positive DC, Negative DC, Full Wave,

Half Wave, Clipped Sine, Gate Sine, SQRT, Exponential, Log,

233

Specifications

Semicircle, Tanh, Sinc, Noise, Duty 10%, Duty 90%, Up Step, Down

Step, Tri-pulse, Trapezoidal, Cosine, SCR

AM modulation depth

FM Frequency deviation

PWM Width deviation

0% to 120%

0.1% to 99.9%

1% to 99%

FSK Modulation Characteristics

Carrier waveform Sine

Hop frequency

1 μHz to 40 MHz

Interval time 1 ms to 40 s

PSK Modulation Characteristics

Carrier waveform

Hop phase

Sine

0° to 360°

Interval time 1 ms to 40 s

234

Specifications

Frequency Sweep Characteristics

Waveforms

Sweep mode

Sine, Square

Up, Down, Up-Down

Sweep time 1 ms to 500 s

Burst Characteristics

Waveforms all built-in arbitrary waveforms

Counts

Burst rate

1 to 60000 cycles

1 mHz to 1 MHz

DC Offset Characteristics

Offset range

-10 mVdc to +10 mVdc

Amplitude range

2 mVpp to 6.32 mVpp

-31.6 mVdc to +31.6 mVdc



-1 Vdc to +1 Vdc

-3.16 Vdc to +3.16 Vdc

-10 Vdc to +10 Vdc

-2 Vdc to +2 Vdc

6.321 mVpp to 20 mVpp

20.001 mVpp to 63.2 mVpp



632.01 mVpp to 2 Vpp

2.001 Vpp to 6.32 Vpp

6.321 Vpp to 20 Vpp

235

Specifications

9.3 General Specifications

Power and environmental requirements

Line voltage Range 99 V to 242 VAC

Line frequency

Power consumption

Operating temperature

Non-operating temperature

47 Hz to 440 Hz

Less than 50 VA

0°C to 40°C

-20

°C to 55°C

Humidity

Operating altitude

Non-operating altitude

Maximum relative humidity 80% for temperatures up to 31°C decreasing linearly to 50% relative humidity at 40°C

≤ 3000 m

≤ 15000 m

Physical size and Weight

Instrument height 156.5 mm

Instrument width

Instrument depth

320 mm

123 mm

Approximately 2.8 kg Net weight

236

Specifications

9.4 Certification

CE Compliant

CE Declaration of Conformity

The oscilloscope meets the requirements of 2006/95/EC Low

Voltage Directive and 2004/108/EC Electromagnet

Compatibility Directive and

Low Voltage Directive

- EN 61010-1:2001

EMC Directive

- EN 61326-1: 2006

- EN 61000-3-2: 2006

- EN 61000-3-3: 1995+A1: 2001+A2: 2005

Electrical equipment for measurement, control, and laboratory use.

237

Performance Verification Procedure

Appendix A: Performance

Verification Procedure

• DC Gain Accuracy

• Bandwidth

• Trigger Sensitivity

• Time Scale Accuracy

238


The only parameter that can be user calibrated is the DC gain accuracy. If any of the other parameters, bandwidth, trigger sensitivity, or time scale accuracy does not meet published specifications, the unit must be returned to B&K Precision for repair.

The oscilloscope under test must be warmed up for at least 30 minutes prior to the start of any performance test.

DC Gain Accuracy

Equipment needed: Fluke calibrator (preferred) or DC power supply,

DMM, splitter, 2 BNC cables

1. Disconnect all cables from the oscilloscope channel inputs.

2. Press the Acquire front panel key.

3. In Acquire menu, press the Mode soft key until Averages appears.

4. Turn the entry knob until “256” appears.

5. In Acquire menu, press Sampling soft key and set to “Real

Time”.

6. Set CH1 probe attenuation to 1X in CH1 menu.

7. Press Measure button and select Voltage, then go to page

2/4 and select Average.

239


8. Connect calibrator to oscilloscope. If preferred calibrator is not available, connect alternative equipment as follows:

Oscilloscope

DC Power

Supply

DMM

9. Apply a reference signal. The output level of the DC positive/negative of calibrator output should be equal to 3 times the volts/div setting of oscilloscope. For example, to test 10 mV/div in CH1, the output of the calibrator should be set to +30 mV/-30 mV.

10. Compare the reading of the Vavg value at the bottom of the screen (real time reading of the input signal) to the amplitude of your reference signal.

11. The DC gain should always be

≤ 4% for 2 to 5 mV/div and ≤ 3% for 10 mV to 5 V/div.

DC Gain

=

∆

Vout

∆

Vin

=

V oscillosco pe

+

V

DMM

+

−

V oscillosco pe

−

−

V

DMM

−

In above example, the difference between positive and negative input value is 60 mV.

12. Select the next volts/div setting.

13. Repeat the above steps for channel 2.

240


Bandwidth

Equipment needed: Fluke calibrator (preferred) or signal generator

1. Connect your calibrator’s output to CH1 of the oscilloscope by 50ohm feed thru connector.

Oscilloscope

Calibrator or

Signal Generator

2. Set CH1 input attenuation to 5 mV/div, DC coupling, and horizontal scan to 500 ns/div.

3. Turn on output of the calibrator for a 1 MHz sine wave.

4. Change the output level of calibrator until waveform height is 6 divisions and reading is 30 mVpp.

5. Record these values as a reference value.

6. Slowly increase frequency output of calibrator up to rated bandwidth of the oscilloscope.

7. Observe waveform and reading on screen. The size of the waveform should always be

≥ 4.2 divisions, and reading should always be

≥ 21.2 mV.

8. Repeat the above steps for CH2.

241


Trigger Sensitivity


1. Connect your calibrator’s output to CH1 of the oscilloscope by 50ohm feed thru connector.

Oscilloscope

Calibrator or

Signal Generator

2. Set input attenuation of CH1 to 10 mV/div.

3. Turn on output of the calibrator for a 10 MHz sine wave.

4. Change output level until waveform reaches 1 division on the screen. The waveform should be stable and clear.

5. Set calibrator to rated bandwidth frequency of the oscilloscope.

6. Change output level of calibrator to the specified vertical division, 1.5 div from 10 MHz to full bandwidth. The waveform should be stable and clear.

7. Repeat the above steps for CH2.

242


Time Scale Accuracy


1. Connect your calibrator’s output to CH1 of the oscilloscope by 50ohm feed thru connector. If recommended calibrator is not available, connect alternative equipment as follows:

Oscilloscope

Calibrator or

Signal

2. On the oscilloscope, the time base is switched to the sweep speed under test.

3. Set up a 10 MHz sine wave output from calibrator.

4. Press the Auto button on oscilloscope to get a stable waveform.

5. Press the Measure button, soft key Time, and then soft key

Frequency.

6. Press the Acquire button and soft key Mode to set Average mode.

7. Adjust average to 8. It should read 10 MHz.

8. Switch sweep speed to 100 ms (or 200 ms) to have a stable frequency reading. This reading should be less than 1 kHz.

243

Disabling Auto Function

Appendix B: Disabling Auto

Function

The oscilloscope has the ability to disable the Auto button that would automatically setup the scope to display a signal, circumventing the need to know how to set up scope parameters. This feature could be used by educators as a teaching tool for basic oscilloscope operation.

To receive information on how to disable this Auto button function, please contact B&K Precision at http://www.bkprecision.com/contact-us.html .

244

AC coupling, 37

Acquisition status, 23 attenuation, 28

Autoset, 33

Band block filter, 42 bandwidth limit, 39

Cursors, 132

DC coupling, 38

Delayed, 60

Edge Trigger, 70 even fields, 74

FFT, 49 filters, 42

Force Trigger, 66

Frequency Counter, 92 fuse, 17

GND coupling, 39

Holdoff, 69

Invert, 44

Key Lock, 93

Key Test, 96

Main mode, 58

Index

Mask, 100 odd fields, 74

Overshoot, 105

Pass/Fail, 98

Peak-Peak, 103

Persist, 139

Playback, 120

Preshoot, 105

Pulse Width Trigger, 71 quick help, 32

Record Wavefrom, 119

REF, 53

Roll mode, 63

Screen Test, 96

Self-calibration, 82

Trace, 125 trigger level, 66

Trigger Modes, 67 vertical position knob, 35 vertical scale, 36

Video Trigger, 74

X-Y, 62

245

SERVICE INFORMATION

Warranty Service: Please go the support and service section on our website www.bkprecision.com

to obtain a RMA #. Return the product in the original packaging with proof of purchase to the address below. Clearly state on the RMA the performance problem and return any leads, probes, connectors and accessories that you are using with the device.

Non-Warranty Service: Please go the support and service section on our website www.bkprecision.com

to obtain a RMA #. Return the product in the original packaging to the address below. Clearly state on the RMA the performance problem and return any leads, probes, connectors and accessories that you are using with the device. Customers not on an open account must include payment in the form of a money order or credit card. For the most current repair charges please refer to the service and support section on our website.

Return all merchandise to B&K Precision Corp. with pre-paid shipping. The flat-rate repair charge for Non-Warranty Service does not include return shipping.

Return shipping to locations in North America is included for Warranty Service.

For overnight shipments and non-North American shipping fees please contact

B&K Precision Corp.

B&K Precision Corp.

22820 Savi Ranch Parkway

Yorba Linda, CA 92887 www.bkprecision.com

714-921-9095

Include with the returned instrument your complete return shipping address, contact name, phone number and description of problem.

LIMITED THREE-YEAR WARRANTY

B&K Precision Corp. warrants to the original purchaser that its products and the component parts thereof, will be free from defects in workmanship and materials for a period of three years from date of purchase. B&K

Precision Corp. will, without charge, repair or replace, at its option, defective product or component parts. Returned product must be accompanied by proof of the purchase date in the form of a sales receipt.

To obtain warranty coverage in the U.S.A., this product must be registered by completing a warranty registration form on our website www.bkprecision.com

within fifteen (15) days of purchase.

Exclusions: This warranty does not apply in the event of misuse or abuse of the product or as a result of unauthorized alterations or repairs. The warranty is void if the serial number is altered, defaced or removed.

B&K Precision Corp. shall not be liable for any consequential damages, including without limitation damages resulting from loss of use. Some states do not allow limitations of incidental or consequential damages. So the above limitation or exclusion may not apply to you. This warranty gives you specific rights and you may have other rights, which vary from state-to-state.

B&K Precision Corp., 22820 Savi Ranch Parkway, Yorba Linda, CA 92887 www.bkprecision.com 714-921-9095

22820 Savi Ranch Parkway

Yorba Linda, CA 92887

www.bkprecision.com

© 2011 B&K Precision Corp.

Printed in China v030612

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