BK Precision 2540B User Manual
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BK Precision 2540B User Manual

Digital storage oscilloscopes
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Model: 2540B, 2542B, 2540B-GEN,
2542B-GEN
Digital Storage
Oscilloscopes
USER MANUAL

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Summary of Contents for BK Precision 2540B

  • Page 1 Model: 2540B, 2542B, 2540B-GEN, 2542B-GEN Digital Storage Oscilloscopes USER MANUAL...

  • Page 3: Safety Summary

    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.
  • Page 4 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.
  • Page 5 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.
  • Page 6 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...

  • Page 7: Safety Symbols

    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.

  • Page 8: Environmental Conditions

    IEC Measurement Category I. CAT I (400V) Inputs may be connected to mains (up to 400 VAC) under Category I overvoltage conditions. Environmental Conditions Operating 0 °C to 40 °C Environment Storage Humidity 0 – 80% R.H. Storage Environment -20 °C to +50 °C Pollution degree Pollution degree 2 Notations...

  • Page 9: Table Of Contents

    Table of Contents 1 GETTING STARTED ............. 14 Introduction ............. 15 Package Contents ........... 16 Input Power Requirements ......17 Panel and Screen Display ....... 18 Front Panel Display ............. 18 Back Panel Display ............21 LCD Main Screen Display ..........22 Quick Check ............
  • Page 10 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 Trigger Controls ..........65 RUN Controls ..........78 3 MENU OPERATION ........... 79 UTILITY Menu ..........
  • Page 11 External Storage ............127 Firmware Update ............131 CURSOR Menu ..........132 Manual Mode ............. 133 Track Mode ..............135 AUTO Mode ............... 137 DISPLAY Menu ..........138 4 SHORTCUT MENU (2540B/2542B only) ....141 Shortcut Controls........... 142 CUSTOM Button ............142 MEASALL Button ............
  • Page 12 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 Output Terminals .......... 182 GEN OUT ..............182 MOD OUT ..............182 6 QUICK START GUIDE ..........185 Making Simple Measurements ......
  • Page 13 System Message ........... 216 General Problems ......... 220 9 SPECIFICATIONS ............ 223 Digital Storage Oscilloscope Specifications ... 224 Arbitrary Waveform Generator Specifications 231 General Specifications ........236 Certification ........... 237 Appendix A: Performance Verification Procedure ..238 DC Gain Accuracy ........... 239 Bandwidth ..............

  • Page 14: Getting Started

    Getting Started 1 GETTING STARTED • Introduction • Package Contents • Input Power Requirements • Panel and Screen Display • Quick Check • Probe Safety • Probe Attenuation • Probe Compensation...

  • Page 15: Introduction

    Getting Started 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.

  • Page 16: Package Contents

    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 Package Contents The digital storage oscilloscopes are shipped with the following contents: •...

  • Page 17: Input Power Requirements

    Getting Started 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.

  • Page 18: Panel And Screen Display

    Getting Started Panel and Screen Display Front Panel Display (top) (top) (bottom) Figure 1 - Model 2540B...
  • Page 19 Getting Started Figure 2 - Model 2542B-GEN 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.
  • Page 20 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...

  • Page 21: Back Panel Display

    Getting Started Back Panel Display (side) (side) 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.

  • Page 22: Lcd Main Screen Display

    Getting Started LCD Main Screen Display The oscilloscope display contains channel acquisitions, setup information, measurement results, and soft keys for setting up various parameters. 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”...
  • Page 23 Getting Started 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). Horizontal center position icon shows the horizontal center location within the captured waveform. Trigger position icon shows the trigger location within the record waveform.

  • Page 24: Quick Check

    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.

  • Page 25: Basic Check

    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.
  • Page 26 Getting Started 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.

  • Page 27: Probe Safety

    Getting Started 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.

  • Page 28: Probe Attenuation

    Getting Started 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.
  • Page 29 Getting Started probe for the first time to any input channel. A poorly compensated probe can introduce measurement errors. Set both the probe and the oscilloscope attenuation factor to X10 respectively. 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.

  • Page 31: Basic Operation

    Basic Operation 2 BASIC OPERATION • Using Quick Help • Using Autoset • Vertical Controls • Horizontal Controls • Trigger Controls • RUN Controls...

  • Page 32: Using Quick Help

    Basic Operation 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.

  • Page 33: Using Autoset

    Basic Operation If there are more than one page of help information, press the to browse the previous or next pages. 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.
  • Page 34 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.

  • Page 35: Vertical Controls

    Basic Operation Note: Auto set function can be disabled. “Appendix B: Disabling Auto Function” for details 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.

  • Page 36: Vertical Scale Control (Ch1, Ch2)

    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.

  • Page 37: Channel Keys Ch1, Ch2

    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.
  • Page 38 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.
  • Page 39 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.
  • Page 40 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...
  • Page 41 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.
  • Page 42 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: Low pass filter High pass filter Band pass filter...
  • Page 43 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→...
  • Page 44 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.
  • Page 45 Basic Operation Vertical Invert off Vertical Invert on...

  • Page 46: Math Functions

    Basic Operation MATH Functions Dual Waveform Calculation Press MATH channel key to turn on the MATH menu, page ½. Softkey Options Description Add A and B Subtract B from A Operate A X B Multiply A by B Access FFT menu Select CH1 as Source A Source A Select CH2 as Source A...
  • Page 47 Basic Operation Press softkey More 1/2 to display MATH menu page 2/2. Softkey Options Description Add A and B Subtract B from A Operate A X B Multiply A by B Access FFT menu Vertical scale control Vertical position control Split Split the display into Main Screen...
  • Page 48 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...
  • Page 49 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.
  • Page 50 Basic Operation Press softkey More 1/2 to display FFT menu page 2/2. Softkey Options Description Add A and B Subtract B from A Operate A X B Multiply A by B Access FFT menu Vertical scale control Vertical position control Split Split the display into Main Screen...
  • Page 51 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”).

  • Page 52: Ref Function

    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 Description...
  • Page 53 Basic Operation Press softkey More 1/2 to display REF menu, page 2/2. Softkey Options Description REF invert ON Invert REF invert OFF Save the reference Internal INTERNAL waveform to the Storage menu internal memory Save the reference External EXTERNAL waveform to the Storage menu USB mass storage...
  • Page 54 Basic Operation Press 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.

  • Page 55: Horizontal Controls

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

  • Page 56: Horizontal Position Control

    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.
  • Page 57 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.

  • Page 58: Main - Horizontal Mode

    Basic Operation Press softkey More 1/2 to display the HORIZONTAL menu page 2/2. Options Description Softkey Trig-Offset Reset the delay time ---- to zero Reset -More- ---- Select page 1/2 Main - Horizontal Mode Main horizontal mode is the normal viewing mode for the oscilloscope.
  • Page 59 Basic Operation Main Horizontal Mode Readout shows the delay time or the trigger location within the record data relative to the time reference point (). The square brackets show the location of current display window within the record data. Trigger position within the record data. Trigger position on the current waveform display window.

  • Page 60: Delayed - Horizontal Mode

    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.
  • Page 61 Basic Operation control knob key to toggle between Main and Delayed mode directly. Delayed Horizontal Mode...

  • Page 62: X-Y Horizontal Mode

    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.

  • Page 63: Roll - Horizontal Mode

    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.
  • Page 64 Basic Operation Roll Horizontal Mode...

  • Page 65: Trigger Controls

    Basic Operation 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 functional when oscilloscope works under Main or Delayed horizontal mode.
  • Page 66 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.
  • Page 67 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.
  • Page 68 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.
  • Page 69 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.
  • Page 70 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. Softkey Options Description Video...
  • Page 71 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.
  • Page 72 Basic Operation Positive greater than Positive equal Positive within Positive less than Pulse Mode Negative greater than Negative equal Negative within Negative less than Pulse Set the pulse width Setup More 1/2 ---- Select page 2/2 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.
  • Page 73 Basic Operation Softkey Options Description Video Video triggering Type Edge Edge triggering Pulse Pulse width triggering Trigger even without a Auto valid event Mode Trigger only on a valid Normal event Select trigger SETUP Trigger ---- menu Setup More ---- Select page 1/2...
  • Page 74 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 Description...
  • Page 75 Basic Operation Press softkey More 1/2 to display the TRIGGER menu page 2/2. 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.
  • Page 76 Basic Operation Press softkey Trigger Setup from the TRIGGER menu page 2/2 to display the trigger SETUP menu. Softkey Options Description Set the trigger sensitivity Sensitivity by turning the entry knob AC coupling DC coupling Coupling LF Reject Reject low frequencies Reject high frequencies HF Reject Set up the holdoff time...
  • Page 77 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...

  • Page 78: Run Controls

    Basic Operation 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.

  • Page 79: Menu Operation

    Menu Operation 3 MENU OPERATION • UTILITY Menu • MEASURE Menu • ACQUIRE Menu • SAVE/LOAD Menu • CURSOR Menu • DISPLAY Menu...

  • Page 80: Utility Menu

    Menu Operation UTILITY Menu Press the UTILITY menu key to show the UTILITY menu. UTILITY Menu key...
  • Page 81 Menu Operation Press the UTILITY key to display the UTILITY menu page 1/2. Softkey Options Description ---- I/O Setup Select I/O SETUP menu Print ---- Select PRINT menu Setup System ---- Select SYSTEM menu Setup 简体中文 Simplified Chinese 繁軆中文 Traditional Chinese English English language 한국의...
  • Page 82 Menu Operation Press the More 1/2 softkey to display the UTILITY menu page 2/2. Softkey Options Description ---- Service Select Service menu Select PASS/FAIL Pass/Fail ---- menu RUN/STOP Start self-calibration Self-Cal Exit self-calibration AUTO Fast calibrate the vertical position Fast-Cal Turn off fast calibration More 2/2 ----...
  • Page 83 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.

  • Page 84: I/O Setup

    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.
  • Page 85 Menu Operation Press Network Settings softkey to display the LAN menu. Softkey Options Description IP address together with subnet mask and gateway address will be set by DHCP server automatically. DHCP You have to set IP address, subnet mask and gateway address manually.
  • Page 86 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.
  • Page 87 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.
  • Page 88 Menu Operation Print Setup Press UTILITY → Print Setup to display the PRINT menu. Softkey Options Description File Print to file Print to BMP(8Bit) 8-Bit BMP file format File Type BMP(24Bit) 24 Bit BMP file format CSV file format Normal Normal BMP picture Screen Inverted...
  • Page 89 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.
  • Page 90 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.

  • Page 91: System Setup

    Menu Operation Inverted System Setup Press UTILITY → System Setup to display the SYSTEM menu page 1/2. Softkey Options Description Key press sound on Sound Key press sound off Alarm sound on Alarm Sound Alarm sound off Frequency counter on Counter Frequency counter off More 1/2...
  • Page 92 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. Softkey Options Description Key Lock function on Key Lock function off, a Key Lock password is required when Password is ON...
  • Page 93 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.
  • Page 94 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.
  • Page 95 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.

  • Page 96: Service

    Menu Operation Service Press UTILITY → Service to display the Service menu. Softkey Options Description Display system information: Model, System ---- Serial number, Information Software version, Installed modules Screen ---- Test the LCD screen Test Check the key and Key Test ---- control operation Return to the UTILITY...
  • Page 97 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...

  • Page 98: Pass/Fail

    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. Softkey Options Description Pass/Fail function on Enable Test Pass/Fail function off Source signal CH1 Source...
  • Page 99 Menu Operation Press More 1/2 to display the PASS/FAIL menu 2/2. Softkey Options Description Pass/Fail count message Display Pass/Fail count message Output on Pass PASS waveforms Output and alarm on Pass PASS+ waveforms Output FAIL Output on Fail waveforms Output and alarm on Fail FAIL+ waveforms Stop sampling on output...
  • Page 100 Menu Operation Setup Mask Press UTILITY → Pass/Fail → Setup Mask to display the MASK menu 1/2. Softkey Options Description X Mask Set horizontal tolerance Y Mask Set vertical tolerance Create the PASS/FAIL Create ---- Mask tolerance mask Return to the ---- PASS/FAIL menu More...
  • Page 101 Menu Operation Press More 1/2 to display the MASK menu 2/2. Softkey Options Description Store the PASS/FAIL Internal ---- tolerance mask to Storage internal memory Store the PASS/FAIL External tolerance mask to ---- external USB mass Storage storage device Return ---- PASS/FAIL menu Display the menu page...

  • Page 102: Measure Menu

    Menu Operation MEASURE Menu MEASURE Menu key Press MEASURE menu key to display the MEASURE menu. Softkey Options Description Measure CH1 Source Measure CH2 Select the Voltage Voltage ---- measurement menu Select the Time Time ---- measurement menu Turn off the current Clear ---- measurement readouts...

  • Page 103: Voltage Measurements

    Menu Operation Voltage Measurements High Peak-Peak Amplitude Voltage parameter definitions Press MEASURE → Voltage to display the VOLTAGE menu page 1/4. Softkey Options Description The Peak-Peak value is the difference between Peak-Peak ---- maximum and minimum values The Amplitude value is Amplitude ---- the difference between...
  • Page 104 Menu Operation Press More 1/4 softkey to display the VOLTAGE menu page 2/4. Softkey Options Description High value is the mode (most common value) of ---- High the upper part of the waveform Low value is the mode (most common value) of ---- the lower part of the waveform...
  • Page 105 Menu Operation Press More 2/4 softkey to display the VOLTAGE menu page 3/4. Softkey Options Description Cycle Avg value is the sum of the samples Cycle Avg ---- divided by the number of samples over one period Cycle RMS value is the Cycle ---- true Root Mean Square...
  • Page 106 Menu Operation High × Rising Edge Overshoot Amplitude × Falling Edge Overshoot Amplitude Overshoot High Overshoot × Rising Edge Preshoot Amplitude High × Falling Edge Preshoot Amplitude Preshoot High Preshoot...

  • Page 107: Time Measurements

    Menu Operation Press More 3/4 softkey to display the VOLTAGE menu page 4/4. Softkey Options Description Return to the MEASURE ---- menu ---- Display menu page 1/4 More 4/4 Time Measurements RiseTime FallTime -Width +Width Period Time parameter definitions...
  • Page 108 Menu Operation Press MEASURE → Time to display the TIME menu page 1/5. Softkey Options Description Frequency is defined as ---- Frequency 1/period of the first cycle Period is the time period ---- of the first complete Period waveform cycle Rise Time is the time that the first positive- Rise Time...
  • Page 109 Menu Operation Press More 1/5 softkey to display the TIME menu page 2/5. Softkey Options Description Positive Width is the time between the 50% ---- +Width amplitude points of the first positive pulse Negative Width is the time between the 50% ---- -Width amplitude points of the...
  • Page 110 Menu Operation Press More 2/5 softkey to display the TIME menu page 3/5. Softkey Options Description The time between the 50% amplitude points of Delay ---- the first positive-leading edge of each channel The time between the 50% amplitude points of ---- Delay the first negative-trailing...
  • Page 111 Menu Operation Delay Delay definition Press More 3/5 softkey to display the TIME menu page 4/5. Softkey Options Description Phase 1→2 is the ratio of Phase ---- Delay 1→2 to the period of 1→2 CH1, expressed in degrees Phase 2→1 is the ratio of Phase ---- Delay 2→1 to the period of...
  • Page 112 Menu Operation Time Time Phase 1 → 2 = × Period Time Time Phase 2 → 1 = × Period Period Delay Phase 1 → 2 definition Press More 4/5 softkey to display the TIME menu page 5/5. Softkey Options Description Return to the MEASURE ----...
  • Page 113 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 →...
  • Page 114 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.

  • Page 115: Acquire Menu

    Menu Operation ACQUIRE Menu Press the ACQUIRE menu key to show the ACQUIRE menu. ACQUIRE Menu key Press Mode softkey to select Normal mode. Softkey Options Description Normal Normal acquisition Average Average acquisition Mode Peak Detect Peak detect acquisition Equivalent Equivalent sampling Sampling Real Time...
  • Page 116 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.
  • Page 117 Menu Operation Press Mode softkey to select Average mode. Softkey Options Description Normal Normal acquisition Average Average acquisition Mode Peak Peak detect Detect acquisition Set the average Averages number to 2, 4, 8, 16, 32, 64, 128, or 256 Equivalent Equivalent sampling Sampling Real Time Real time sampling...
  • Page 118 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.

  • Page 119: Record Wavefrom

    Menu Operation Record Wavefrom Press ACQUIRE → Record to show the RECORD menu. Softkey Options Description Turn off record function Record Record the waveform Play Playback recorded Mode Back waveform Save to/Recall from Save internal or external /Recall memory Record CH1 channel Record CH2 channel Source Pass/Fail...

  • Page 120: Playback Record

    Menu Operation Playback Record Press ACQUIRE → Record to show the RECORD menu. Press Mode softkey to select Playback function. Softkey Options Description Record Record the waveform Play Playback the record Back Mode Save/Recall from Save internal or external /Recall memory Exit Record function ...
  • Page 121 Menu Operation Press ACQUIRE → Record to show the RECORD menu. Press Mode softkey to select Play Back function. Press More 1/2 softkey to show RECORD menu page 2/2. Softkey Options Description Interval between two Interval frames Start Set the start frame to Frame playback Set the end frame to...

  • Page 122: Save/Recall The Record

    Menu Operation Save/Recall the Record Press ACQUIRE → Record to show the RECORD menu. Press Mode softkey to select Save/Recall function. Softkey Options Description Record Record the waveform Play Playback the record back Mode Save/Recall from Save internal or external /Recall memory Exit Record function...

  • Page 123: Exit Record Function

    Menu Operation Exit Record Function Press Mode softkey to select OFF option and return to the ACQUIRE menu. Softkey Options Description Record Record the waveform Play back Play back the record Save/Recall from Mode Save internal or external /Recall memory Exit Record function Return to ACQUIRE ----...

  • Page 124: Save/Load Menu

    Menu Operation SAVE/LOAD Menu SAVE/LOAD MENU key Press SAVE/LOAD key to display the SAVE/LOAD menu. Softkey Options Description Internal Display the INTERNAL ---- Storage menu External Display the EXTERNAL ---- Storage menu Set the instrument to the Factory ---- factory default configuration...

  • Page 125: Internal Storage

    Menu Operation Internal Storage Saving/Loading Trace Press SAVE/LOAD→Internal Storage→Storage type to display the INTERNAL menu and select Trace storage type. Softkey Options Description Traces Trace file format Storage type Setups Setup file format Select a trace file from Tracexx Trace01 to Trace10 Save the display to current Save ----...
  • Page 126 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 Description Traces Trace file format Storage type Setups Setup file format Select a setup file from Setupxx Setup01 to Setup10...

  • Page 127: External Storage

    Menu Operation External Storage Press SAVE/LOAD→External Storage to display the EXTERNAL menu. Softkey Options Description Create a new file or folder in ---- the external memory Rename the current file or ---- Rename folder ---- Load the current file Load Delete the current file or Delete ----...
  • Page 128 Menu Operation Press SAVE/LOAD→External Storage→New to display the New menu. Softkey Options Description ---- New File Display the New File menu Display the New Folder ---- menu. Folder Return to the EXTERNAL ---- menu Press SAVE/LOAD→External Storage→New→New File to display the New File menu. Softkey Options Description...
  • Page 129 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.
  • Page 130 Menu Operation Press SAVE/LOAD→External Storage→Rename to display the Rename menu. Softkey Options Description Enter the selected Enter ---- character and go to the Character next character position Delete the selected Delete ---- character Character Rename the selected file ---- or folder Return to the ---- EXTERNAL menu...

  • Page 131: Firmware Update

    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.

  • Page 132: Cursor Menu

    Menu Operation 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...

  • Page 133: Manual Mode

    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.
  • Page 134 Menu Operation corner when menu is off Displays the difference ΔY ---- 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. Softkey Options Description...

  • Page 135: Track Mode

    Menu Operation or on the top right corner when menu is off. ΔX is the time difference value ΔX between X1 and X2 cursors ---- 1/ΔX 1/ΔX is the frequency between X1 and X2 Track Mode Two cross hair cursors are displayed on the screen in the track mode.
  • Page 136 Menu Operation Press CURSOR→Mode to display the CURSOR menu and select the Track mode. Softkey Options Description Manual Manual cursor measurement Mode Auto Auto cursor measurement Track Track cursor measurement Track CH1 with Cursor A Cursor A Track CH2 with Cursor A None Turn off Cursor A Track CH1 with Cursor B...

  • Page 137: Auto Mode

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

  • Page 138: Display Menu

    Menu Operation DISPLAY Menu Display Menu key...
  • Page 139 Menu Operation Press DISPLAY menu key to display the DISPLAY menu page 1/2. Softkey Options Description Vector mode fills the space between adjacent Vector sample points in the Type waveform Dot mode only displays Dots the sample points The scope updates the waveform without erasing the previous sample Persist...
  • Page 140 Menu Operation Press More 1/2 softkey to display the DISPLAY menu page 2/2. Softkey Options Description Display both grids and axes Turn off the axes Grid Turn off the grids Turn off both grids and axes Adjust the brightness Brightness of the grids Color ----...

  • Page 141: Shortcut Menu (2540B/2542B Only)

    Shortcut Menu 4 SHORTCUT MENU (2540B/2542B only) • CUSTOM Button • MEASALL Button • RECORD Button • COUNTER/LOCAL Button...

  • Page 142: Shortcut Controls

    Shortcut Menu 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.
  • Page 143 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 Options Description Enable custom shortcut key Enable Disable custom shortcut key Assign shortcut to a selected sub-menu...

  • Page 144: Measall Button

    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.

  • Page 145: Record Button

    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.

  • Page 147: Arbitrary Waveform Generator

    Arbitrary Waveform Generator 5 ARBITRARY WAVEFORM GENERATOR (2540B-GEN/2542B-GEN only) • Waveform Generator Controls • Generator Menu • Output Terminals...

  • Page 148: Waveform Generator Controls

    Arbitrary Waveform Generator Note: All the contents in this chapter apply to models 2540B-GEN and 2542B-GEN only. 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)
  • Page 149 Arbitrary Waveform Generator 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.

  • Page 150: Freq/Capture Button

    Arbitrary Waveform Generator FREQ/CAPTURE Button This button has two functions: 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.

  • Page 151: Ampl/Local Button

    Arbitrary Waveform Generator 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 This button has two functions: 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...

  • Page 152: On/Off Button

    Arbitrary Waveform Generator 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. 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.

  • Page 153: Sine Output

    Arbitrary Waveform Generator Sine Output Press the Output Type softkey to select Sine waveform. SINE menu will be displayed. Softkey Description Press Output Type to select a Output standard waveform or modulated Type signal to output Press the Freq to select the frequency parameter.

  • Page 154: Square Output

    Arbitrary Waveform Generator Square Output Press the Output Type softkey to select Square waveform, SQUARE menu will be displayed. Softkey Description Press Output Type to select a Output standard waveform or modulated Type signal to output Press Freq to select the frequency parameter.

  • Page 155: Pulse Output

    Arbitrary Waveform Generator Pulse Output Press the Output Type softkey to select Pulse waveform, PULSE menu will be displayed. Softkey Description Press Output Type to select a Output standard waveform or modulated Type signal to output Press this softkey toggle selection between frequency and period parameter.

  • Page 156: Built-In Arbitrary Waveform Output

    Arbitrary Waveform Generator output equivalent adjusted period from Period selection. Press Ampl to select and change Ampl the amplitude parameter. Press Offset to select and change Offset the offset parameter. Press Width/Duty to select and Width/ change between the pulse width Duty and duty.
  • Page 157 Arbitrary Waveform Generator period parameter. Use the left or right keys below the adjustment knob 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.
  • Page 158 Arbitrary Waveform Generator Triangle ramp Positive Down ramp pulse Positive Negative double pulse pulse Negative Positive double pulse Negative Full wave Clipped Half wave sine Gate sine SQRT...
  • Page 159 Arbitrary Waveform Generator Exponential Logarithmic (EXP) (LOG) Semicircle Tanh Sinc Noise Duty 10% Duty 90% Up step Down step Trapezoidal Tri-pulse (Trapezia) Cosine Thyristor (COS) (SCR)

  • Page 160: User Programmable Arbitrary Waveform Output

    Arbitrary Waveform Generator User Programmable Arbitrary Waveform Output Press the Output Type softkey to select User ARB waveform, ARB menu page 1/2 will be displayed. Softkey Description Press Output Type to select a Output standard waveform or modulated Type signal to output Press this softkey...
  • Page 161 Arbitrary Waveform Generator Press Offset to select and change Offset the offset parameter. More Select page 2/2 Press More 1/2 softkey to display the ARB menu page 2/2. Softkey Options Description With interpolation enabled, the waveform editor makes a straight-line connection between points.
  • Page 162 Arbitrary Waveform Generator 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.
  • Page 163 Arbitrary Waveform Generator Data displayed data screen. If the waveform is non-periodic, then the whole screen data is regarded as one period. Enter the INTERNAL menu Internal ---- for arbitrary waveform save/ Storage load operation. For External Storage, refer to previous SAVE/LOAD menu operation.
  • Page 164 Arbitrary Waveform Generator 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.
  • Page 165 Arbitrary Waveform Generator 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.
  • Page 166 Arbitrary Waveform Generator 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.
  • Page 167 Arbitrary Waveform Generator Press Internal Storage softkey to display the INTERNAL menu. Softkey Options Description File saved to volatile cannot Volatile be retrieved after power off. Storage Files saved to User01 to User01- User10 can be retrieved User10 after power off (non-volatile). Save the displayed screen waveform to the currently selected storage position.

  • Page 168: Am Modulation

    Arbitrary Waveform Generator AM Modulation Press the MENU key and press the Output Type softkey to select amplitude modulation, AM. Softkey Options Description Press Output Type select a Output ---- standard waveform Type modulated signal to output Select sine waveform as the Sine carrier waveform.
  • Page 169 Arbitrary Waveform Generator Press More 1/2 softkey to display the AM menu page 2/2. Softkey Description Select the modulating waveform Mod Shape from all built-in arbitrary waveforms. Select and specify the modulating Mod Freq frequency. Select and specify the modulation AM Depth depth.

  • Page 170: Fm Modulation

    Arbitrary Waveform Generator FM Modulation Press the MENU key and press the Output Type softkey to select frequency modulation, FM. Softkey Options Description Press Output Type to select Output ---- a standard waveform or Type modulated signal to output Select a sine waveform as Sine the carrier waveform.
  • Page 171 Arbitrary Waveform Generator Press More 1/2 softkey to display the FM menu page 2/2. Softkey Description Select the modulating waveform Mod Shape from all built-in arbitrary waveforms Select and specify the modulating Mod Freq frequency. Select and specify the frequency FM Dev deviation.

  • Page 172: Pulse Width Modulation

    Arbitrary Waveform Generator Pulse Width Modulation Press MENU key and press the Output Type softkey to select pulse width modulation, PWM. Softkey Description Press Output Type to select a standard waveform or modulated Output Type signal to output. Select and specify the carrier Carrier Freq frequency.
  • Page 173 Arbitrary Waveform Generator Press More 1/2 softkey to display the PWM menu page 2/2. Softkey Description Select the modulating waveform from Mod Shape all built-in arbitrary waveforms.. Select and specify the modulating Mod Freq frequency. Select and specify the pulse width Width Dev deviation.

  • Page 174: Dc Offset Modulation (Dcom)

    Arbitrary Waveform Generator 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 Description...
  • Page 175 Arbitrary Waveform Generator Press More 1/2 softkey to display the DCOM menu page 2/2. Softkey Description Select modulating waveform function from all built-in arbitrary Shape waveforms. Select and specify the modulating Mod Freq frequency. More Select page 1/2 Note: DC offset modulation can be used as an alternative way of adding noise to a sine or square waveform.

  • Page 176: Frequency Sweep

    Arbitrary Waveform Generator Frequency Sweep Press the MENU key and press the Output Type softkey to select SWEEP function, SWEEP. Softkey Options Description Press Output Type to select a Output ---- standard waveform or Type modulated signal to output Select sine waveform as the Sine sweep waveform.
  • Page 177 Arbitrary Waveform Generator Press More 1/2 softkey to display the SWEEP menu page 2/2. Softkey Options Description Sweep from start frequency to stop frequency. Sweep from stop frequency Down Sweep to start frequency. Mode Sweep up and down between start and stop frequencies. Up-Down It will sweep up first, and then down.

  • Page 178: Burst Frequency

    Arbitrary Waveform Generator 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 Description Press Output Type softkey to select Output a standard waveform or modulated Type signal to output Select a waveform as the burst...
  • Page 179 Arbitrary Waveform Generator Press More 1/2 softkey to display the BURST menu page 2/2. Softkey Description Select and specify the burst count Cycles (number of bursts). Burst Select and specify the burst rate Freq Offset Select and specify the offset voltage. More Select page 1/2 Note: The burst frequency defines the rate...

  • Page 180: Fsk And Psk Modulation

    Arbitrary Waveform Generator 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. Softkey Options Description Press Output Type to select a Output ---- standard waveform or Type modulated signal to output Select Frequency Shift Keying...
  • Page 181 Arbitrary Waveform Generator Press More 1/2 softkey to display the KEYING menu page 2/2. Softkey Description FSK Modulation: Specify the hop Hop Freq/ frequency. Hop Phase PSK Modulation: Specify the hop phase. Select and specify the time interval Interval between two frequency shifts. Offset Select and specify the offset voltage.

  • Page 182: Output Terminals

    Arbitrary Waveform Generator 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...
  • Page 183 Arbitrary Waveform Generator 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.

  • Page 185: Quick Start Guide

    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 •...

  • Page 186: Making Simple Measurements

    Quick Start Guide 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. ...
  • Page 187 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. ...

  • Page 188: Capture Single Shot Signal

    Quick Start Guide 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. ...
  • Page 189 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.

  • Page 190: Reduce Random Noise On A Signal

    Quick Start Guide 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.
  • Page 191 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.

  • Page 192: Triggering A Video Signal

    Quick Start Guide 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 ...
  • Page 193 Quick Start Guide Trigger on a Specific Line or All Lines of the Video Signal  Press the Trigger MENU key to display the TRIGGER menu.  Press the Type softkey to select the Video trigger mode.  Press Source softkey to select CH1. ...

  • Page 194: Pass/Fail Measurement

    Quick Start Guide 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.
  • Page 195 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.

  • Page 196: Using Waveform Recorder

    Quick Start Guide Using Waveform Recorder Waveform recorder lets you record waveforms, playback waveforms, and save waveforms. Perform the following steps to record waveforms.  Press the ACQUIRE key to display the ACQUIRE menu.  Press the RECORD softkey to display the RECORD menu.
  • Page 197 Quick Start Guide Perform the following steps to playback the waveforms.  Press the ACQUIRE key to display the ACQUIRE menu.  Press the RECORD softkey to display the RECORD menu.  Press the Mode softkey to select Play back mode. ...
  • Page 198 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.
  • Page 199 Quick Start Guide Perform the following steps to save the waveform recorded.  Press the ACQUIRE key to display the ACQUIRE menu.  Press the RECORD softkey to display the RECORD menu page 1/2.  Press the Mode softkey to select Save/Recall mode. ...

  • Page 200: Making Cursor Measurements

    Quick Start Guide 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.
  • Page 201 Quick Start Guide Perform the following steps to take voltage measurement.  Press the CURSOR key to display the CURSOR menu.  Press Mode softkey to select the Manual mode.  Press Type softkey to select the Voltage type.  Press Y1--/ Y2—softkey or press the entry knob to...
  • Page 202 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.
  • Page 203 Quick Start Guide  Press Source softkey to select FFT.  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. ...
  • Page 204 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. ...
  • Page 205 Quick Start Guide  Press Y1--/ Y2—softkey or press the entry knob to select Y1 cursor.  Rotate the entry knob to move the Y1 cursor to the upper intersection of the signal and Y axis.  Press Y1--/ Y2—softkey or press the entry knob to select Y2 cursor.

  • Page 206: Output Basic Sine Waveform

    Quick Start Guide 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.

  • Page 207: Output Amplitude Modulated Waveform

    Quick Start Guide 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.
  • Page 208 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.
  • Page 209 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%.

  • Page 210: 6.10 Create Waveform With Added Noise

    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.

  • Page 211: 6.11 Capture And Output Math Waveform

    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.
  • Page 212 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.

  • Page 213: Remote Control

    Remote Control 7 REMOTE CONTROL • Comsoft Software • Web Browser GUI (Graphic user Interface)

  • Page 214: Comsoft Software

    Remote Control 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.

  • Page 215: Troubleshooting Guide

    Troubleshooting Guide 8 TROUBLESHOOTING GUIDE • System Messages • General Problems...

  • Page 216: System Message

    Troubleshooting Guide 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.
  • Page 217 Troubleshooting Guide 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.
  • Page 218 Troubleshooting Guide 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.
  • Page 219 Troubleshooting Guide 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.

  • Page 220: General Problems

    Troubleshooting Guide 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: •...
  • Page 221 Troubleshooting Guide 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.

  • Page 223: Specifications

    Specifications 9 SPECIFICATIONS • Digital Storage Oscilloscope Specifications • Arbitrary Waveform Generator Specifications • General Specifications...

  • Page 224: Digital Storage Oscilloscope Specifications

    Specifications 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 2 channels plus external trigger input 60 MHz: 2540B, 2540B-GEN Bandwidth...

  • Page 225: Horizontal System

    Specifications Position range ±8 divisions away from the center of the screen Attenuation factor X1, X10, X100, X1000 Channel common 100:1 at 60 Hz mode rejection 20:1 at 10 MHz ≤ 5 Hz at BNC Lower frequency ≤ 1 Hz when using a 10X passive probe limit, AC coupled ≥...
  • Page 226 Specifications Measurements Max, Min, VPP, High, Low, Amplitude, Voltage measurement Average, RMS, Overshoot, Preshoot, Cycle average, Cycle RMS Frequency, Period, Rise time, Fall time, Time measurement +Width, -Width, +Duty, -Duty, Delay, Phase, X@MAX, X@MIN Math A+B, A-B, A×B, FFT (1024 points) Cursors Manual, Auto, and Track Built-in 5-digit frequency counter.

  • Page 227: Trigger System

    Specifications Trigger system Source CH1, CH2, EXT, EXT/5, AC Line, Alternating Modes Auto, Normal, Single Coupling DC, AC, LF-Reject, HF-Reject Type Edge, Pulse, Video Internal: ±8 divisions from screen center Trigger level range EXT: ±1.6 V EXT/5: ±8 V Trigger sensitivity 0.1 div to 1.0 div user adjustable 1 MΩ...
  • Page 228 Specifications Storage and I/O 10 setups and trace files can be saved and Internal memory recalled internally. External storage file Setup file(*.STP), Waveform file(*.WFM), Trace format file(*.TRC), BMP file(*.BMP), **CSV file(*.CSV) USB host USB device Standard interface RS232C ports PASS/FAIL OUT (BNC) **Maximum number of data points that can be stored into a .CSV file on an external USB storage device is 1200 points.

  • Page 229: Acquisition System

    Specifications Acquisition system Max real time 1 GSa/s sample rate Max equivalent 50 GSa/s sample rate 1 GSa/s: 16 kpts 500 MSa/s: 8 kpts (dual channel) Max memory depth 500 MSa/s: *2.4 Mpts (single channel) (Based on Sample rate) ≤ 250 MSa/s: *1.2 Mpts (single and dual channel operation) Vertical resolution 8 bits...

  • Page 230: Display System

    Specifications Display system Display 5.7-inch TFT LCD display. Resolution 234 vertical by 320 horizontal pixels Colour 24 bit true color Brightness Adjustable Simplified Chinese, Traditional Chinese, English, Language Korean, Japanese, Russian, French, Spanish, Polish, Portuguese Menu ON: 8 vertical by 10 horizontal divisions or 200 vertical by 250 horizontal pixels Display area Menu OFF:...

  • Page 231: Arbitrary Waveform Generator Specifications

    Specifications Arbitrary Waveform Generator Specifications Note: The specifications in this section apply to models 2540B-GEN and 2542B-GEN only. Frequency Characteristics 1 μHz to 20 MHz (2540B-GEN) Sine waveform 1 μHz to 40 MHz (2542B-GEN) 1 μHz to 20 MHz Square waveform Pulse waveform 1 mHz to 10 MHz Built-in AWG...
  • Page 232 Specifications distortion Rise / Fall time < 20 ns (square) Pulse Characteristics Duty Cycle 0.01 % to 99.99 % Width 10 ns to 999.99 s Arbitrary Characteristics Sampling Rate 40 MSa/s Vertical Resolution 8 bits Waveform Length 8192 points *) Non-volatile Memory 10 waveforms *) The internal memory size is 8192 points, however...
  • Page 233 Specifications Amplitude stability ± 2% in 4 hours When freq. ≤ 5 MHz: ± 5% Amplitude flatness When freq. > 5 MHz: ± 10% Amplitude flatness When freq. ≤ 50 kHz: ± 5% (Built-in ARB, User When freq. > 50 kHz: ± 20% ARB) 50 Ω...
  • Page 234 Specifications Semicircle, Tanh, Sinc, Noise, Duty 10%, Duty 90%, Up Step, Down Step, Tri-pulse, Trapezoidal, Cosine, SCR AM modulation depth 0% to 120% FM Frequency deviation 0.1% to 99.9% PWM Width deviation 1% to 99% FSK Modulation Characteristics Carrier waveform Sine 1 μHz to 40 MHz Hop frequency...
  • Page 235 Specifications Frequency Sweep Characteristics Waveforms Sine, Square Sweep mode Up, Down, Up-Down Sweep time 1 ms to 500 s Burst Characteristics Waveforms all built-in arbitrary waveforms Counts 1 to 60000 cycles Burst rate 1 mHz to 1 MHz DC Offset Characteristics Offset range Amplitude range -10 mVdc to +10 mVdc...

  • Page 236: General Specifications

    Specifications General Specifications Power and environmental requirements Line voltage Range 99 V to 242 VAC Line frequency 47 Hz to 440 Hz Power consumption Less than 50 VA Operating temperature 0°C to 40°C Non-operating -20°C to 55°C temperature Maximum relative humidity 80% for Humidity temperatures up to 31°C decreasing linearly to 50% relative humidity at 40°C...

  • Page 237: Certification

    Specifications 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.

  • Page 238: Appendix A: Performance Verification Procedure

    Performance Verification Procedure Appendix A: Performance Verification Procedure • DC Gain Accuracy • Bandwidth • Trigger Sensitivity • Time Scale Accuracy...

  • Page 239: Dc Gain Accuracy

    Performance Verification Procedure 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.
  • Page 240 Performance Verification Procedure 8. Connect calibrator to oscilloscope. If preferred calibrator is not available, connect alternative equipment as follows: DC Power Oscilloscope Supply 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.

  • Page 241: Bandwidth

    Performance Verification Procedure 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. Calibrator or Oscilloscope Signal Generator 2. Set CH1 input attenuation to 5 mV/div, DC coupling, and horizontal scan to 500 ns/div.

  • Page 242: Trigger Sensitivity

    Performance Verification Procedure Trigger Sensitivity Equipment needed: Fluke calibrator (preferred) or signal generator 1. Connect your calibrator’s output to CH1 of the oscilloscope by 50ohm feed thru connector. Calibrator or Oscilloscope Signal Generator 2. Set input attenuation of CH1 to 10 mV/div. 3.

  • Page 243: Time Scale Accuracy

    Performance Verification Procedure Time Scale Accuracy Equipment needed: Fluke calibrator (preferred) or signal generator 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: Calibrator or Oscilloscope Signal...

  • Page 244: Appendix B: Disabling Auto Function

    Performance Verification Procedure 1 kHz. 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.
  • Page 245 Performance Verification Procedure AC coupling, 37 Mask, 100 Acquisition status, 23 odd fields, 74 attenuation, 28 Overshoot, 105 Autoset, 33 Pass/Fail, 98 Band block filter, 42 Peak-Peak, 103 bandwidth limit, 39 Persist, 139 Cursors, 132 Playback, 120 DC coupling, 38 Preshoot, 105 Delayed, 60 Pulse Width Trigger, 71...

  • Page 246: Service Information

    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.
  • Page 247 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.
  • Page 250 22820 Savi Ranch Parkway Yorba Linda, CA 92887 www.bkprecision.com © 2011 B&K Precision Corp. Printed in China v030713...

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