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1. 66 Appendix D Daily Maintenance and Cleaning General Care DO not store or leave the instrument where the LCD display will be exposed to direct sunlight for long periods of time CAUTION To avoid damage to the instrument or probes do not expose them to sprays liquids or solvents Cleaning If this instrument requires cleaning disconnect it from all povver sources and clean it vvith a mild detergent and water Make sure the instrument is completely dry before reconnecting it to a power source To clean the exterior surface perform the follovving steps 1 Remove loose dust on the outside of the instrument and probes with a lint free cloth Use care to avoid scratching the clear plastic display filter 2 Use a soft cloth dampened with water to clean the instrument Note To avoid damage to the surface of the instrument or probes do not use any abrasive or chemical cleaning agents 67 Appendix E Index Wildthht secede dan mel Ann que dir nes 29 F Width onenari 29 ACTine sine einen 17 Acquiring Signals system 20 AM ASIN at racista ens 23 Application of X Y function 58 AUTO ea T 17 38 AULO SCIUD iii Ge 38 AVAL ta e Ea 22 Base times Ee 23 COATS Crs SERRE P ia net 12 Connector Lara ses ases els 53 Copla 12 19 Cursor Measurement 26 Cursor Moving 27 E EE 30 default setup 38 52 Display Area rime 36 Display sweep mode 50 Display System ooooconciocnococ
2. R Ready All pretrigger data has been acquired and the oscilloscope is ready to accept a trigger Trig d The oscilloscope has received a trigger signal and is acquiring the post trigger data Stop The oscilloscope has stopped acquiring waveform data Single Trigger mode The oscilloscope has completed a Single acquisition R Auto The oscilloscope is in auto mode and is acquiring waveforms in the absence of a trigger signal Scan The oscilloscope is acquiring and displaying waveform data continuously in scan mode Marker shows horizontal trigger position Turn the HORIZONTAL POSITION knob to adjust the position of the marker Read out of the time at the center graticule The marker indicates the edge and pulse width trigger level The on screen markers show the ground reference points of the displayed waveforms If there is no marker the channel is not displayed Readout shows the vertical factor of the channels Readout of the main time base setting Readout of the window time base setting when window mode zoom is activated Trigger source for trigger section Icon indicates selected trigger types Readout of edge and pulse width trigger level Indicates the line number when in Video trigger mode Displays Reference A Voltage and time base setting if REFA is activated Displays Reference B Voltage and time base setting if REFB is activated Displays reading of Trigger reference counter if activated 3 2 Usi
3. Figure 2 3 Horizontal POSITION Knob Used to control the position of the trigger relative to the center of the screen When the trigger point downward arrow moves outside the acquired waveform reaches the left or right edge of the screen the instrument switches automatically to delayed sweep indicated by the arrow pointing left or right instead of downwards In delayed sweep mode you can use the horizontal Time Div knob to acquire more detail around the center of the screen E Time Div Knob Used to change the horizontal time scale to magnify or compress the waveform If waveform acquisition is stopped using the RUN STOP or SINGLE button the SEC DIV control expands or compresses the waveform Pressing the Time Div knob resets the horizontal position to zero mE Window Zone Define the zoom area of a waveform section The Window time base setting cannot be set to a value slower than the main time base setting m Window Press to expand the zoom area to cover the whole screen Holdoff You can use Holdoff to produce a stable display of complex waveforms During the holdoff time the oscilloscope will not trigger until the holdoff time has expired For a pulse train you can adjust the holdoff time so the oscilloscope triggers only on the first pulse in the train Trigger position Trigger level Figure 2 4 Holdoff time Note e When you change between the Main Window Zone and Window views the oscilloscope er
4. Frequency Time Differences between the Cursors 1 AT 63 Math operation FFT FFT Windows Hanning Hamming Blackman Rectangular Environmental Temperature Operating 0 C to 55 C Nonoperating 40 C to 70 C Humidity Operating 95 RH 40 C Nonoperating 90 RH 65 Cs Altitude Operating 4000m Pollution Degree Pollution degree 2 for indoor use only Power Supply Input Voltage 100 240 VAC CAT I Auto selection Frequency 45Hz to 440Hz Power SOVA Max Mechanical Dimensions 300mm Depth x 290 mm Width x 150mm Height 11 8in x 11 4in x 5 9in Weight 4 6kg 10 lbs NOTE Specifications and information are subject to change without notice Please visit www bkprecision com for the most current product information ID Accessories E User Manual M 1 1 10 1 passive probe set 2 pieces a Power cord E USB interface cable Installation disk with EasyScope Software HD EMC and Safety Compliances Declaration of Conformity EMC This oscilloscope is in compliance with council EMC directive 2004 108 EC EN 61326 EN61326 1998 A1 2002 A2 2003 EMC requirements for Class A electrical equipment for measurement control and laboratory use Safety This oscilloscope meet intent of Directive LVD 72 23 EEC amended 93 68 EEC EN61010 1 2001 Safety requirements for electrical equipment for measurement control and laboratory
5. INSTRUCTION BK PRECISION MANUAL Models 2530 amp 2532 Digital Storage Oscilloscopes Model 2530 25 MHz 250 MSa s Model 2532 40 MHz 500 MSa s General Safety Summary Review the following safety precautions to avoid injury and prevent damage to this product or any products connected to it To avoid potential hazards use this product only as specified Only qualified personnel should perform service procedures To Avoid Fire or Personal Injury Use Proper Power Cord Use only the power cord specified for this product and certified for the country of use Connect and Disconnect Properly Do not connect or disconnect probes or test leads while they are connected to a voltage source Ground the Product This product is grounded through the grounding conductor of the power cord To avoid electric shock the grounding conductor must be connected to earth ground Before making connections to the input or output terminals of the product ensure that the product is properly grounded Connect the Probe Properly The probe ground lead is at ground potential Do not connect the ground lead to an elevated voltage Observe All Terminal Ratings To avoid fire or shock hazard observe all ratings and marking on the product Consult the product manual for further ratings information before making connections to the product Do Not Operate Without Covers Do not operate this product with covers or panels removed Avoid Exposed
6. 12V Holdoff range 100ns 1 5s Pulse Trigger gt lt positive Pulse Trigger conditions gt lt negative Pulse Pulse Width Range 20ns 10s Video Trigger Support formats PAL SECAM NTSC Trigger conditions odd field even field all lines line Num Trigger Frequency Counter Readout resolution 6 digits Range DC Coupling 10Hz to max Bandwidth Supported signal types Works with all trigger modes except pulse width trigger and Video Trigger Control Panel Function Auto Set Auto adjusting the Vertical Horizontal system and Trigger Position Settings Save Recall 10 setups Waveforms Save Recall 10 captured waveforms 2 reference waveforms Display System 2532 2530 Display Mode 5 7 inch 145mm diagonal Liquid Crystal Display Resolution 320 horizontal x 240 vertical pixels Color color monochrome Display Contrast Adjustable Waveform display range 8 x 10 DIV Wave Display Mode Point Vector Persist None 1 sec 2 sec 5 sec infinity Waveform interpolation Sin x x Linear Measurement System Automatic measurements Voltage MAX MIN Peak Peak Average Vrms Time Rise time Fall Time Cycle Frequency Period Positive Pulse width Negative Pulse width Cursor Measurement Voltage Differences between the Cursors AV Time Frequency Differences between the Cursors AT
7. Time Div knob Selects the horizontal scale factor for the main or the window time base When Window Zone is enabled it changes the width of the window zone by changing the window time base m Display scan mode When the Time DIV control is set to 100 ms div or slower and the trigger mode is set to Auto the oscilloscope enters the scan acquisition mode In this mode the waveform display updates from left to right In this mode trigger or horizontal position control of waveforms is disabled Time base set to 1 00ms div Figure 3 18 scan mode display 3 8 2 Window Zone Use the Window Zone option to define a segment of a waveform you want to see in greater detail The Window time base setting cannot be set slower than the Main time base setting Adjust the Horizontal 49 Position and Time Div controls to enlarge or minimize waveforms in the Window Zone Waveform needs to be expanded M Pos 6 09 yz HORIZON Main HORIZON Mair Win Zong KEE kan Wasens Cri 4dan A Ae Waveform expanded after zoom Figure 3 20 Window zone 3 8 3 Trigger holdoff If you want to change the holdoff time do the following 1 Press the HORI MENU button to show the Horizontal Menu 2 Press Holdoff 3 Adjust the ADJUST knob to change the holdoff time until the waveforms triggers reliably 3 9 Set trigger system The trigger determines when the oscilloscope starts to acquire data and display a waveform When a trigger is set up pro
8. active you can quickly measure the DC component of the signal by simply noting its distance from the ground symbol If the channel is set to AC coupling the DC component of the signal is blocked allowing you to use greater sensitivity to display the AC component of the signal 2 2 Horizontal System The horizontal controls change the horizontal scale and position of waveforms The horizontal center of the screen is the time reference for waveforms Changing the horizontal scale causes the waveform to expand or contract around the screen center The horizontal position knob changes the position of the trigger point relative to the center of the screen Below is a figure of the front panel horizontal systems controls HORIZONTAL Figure 2 2 Table 2 2 Horizontal Control Menu Menu Explanation Main Display the waveform Win Zone Define a window zoom window by adjusting the cursor position using the Horizontal control knobs Window Expand the waveform defined in Win Zone to full screen width Holdoff Using the Adjust knob to adjust the holdoff time Holdoff Reset Reset the holdoff time to 100ns The center axis of the vertical scale is GND level The readout on the top right corner shows the horizontal position M stands for main time base W stands for window time base Zoom function horizontal menu The arrow on the top center scale shows the vertical position 13 HORIZON
9. and select Time 3 Press the Source option button and select CH1 4 Press the Curl button and turn the ADJUST knob to place the cursor 1 on the first peak of the ring 5 Press the Cur 2 button and turn the ADJUST knob to place the cursor 2 on the second peak of the ring You can see the delta time and frequency the measured ring frequency on the top right of the screen SES i EIERE CHA AA MU Figure 4 1 54 4 2 2 Measuring Ring Amplitude To measure the amplitude follow these steps 1 Press the CURSORS button to see the Cursor Menu 2 Press the Type option button and select Voltage 3 Press the Source option button and select CH1 4 Press the curl option button and turn the universal knob to place the cursor 1 on the highest peak of the ring 5 Press the cur2 option button and turn the universal knob to place the cursor 2 on the lowest peak of the ring You can see the following measurements on the top right of the screen The delta voltage peak to peak voltage of the ringing The voltage at Cursor 1 The voltage at Cursor 2 Figure 4 2 4 3 Capturing a Single Shot signal To capture a single event you need to gain a basic understanding of the signal characteristics to correctly set up the trigger level and slope You can use auto or normal trigger mode to obtain the proper trigger level and slope The following steps demonstrate how
10. do so follow these steps Remove the channel 1 and channel 2 waveforms from the display 58 Turn the CH 1 and CH 2 VOLTS DIV and VERTICAL POSITION knobs to adjust the vertical scale and position NOTE Be sure to first compensate both probes Differences in probe compensation appear as errors in the differential signal 59 Chapter 5 Prompt messages and troubleshooting hints 5 1 Prompt messages M Trig volt level at limit When turning the trigger knob Alerts the user that the trigger level reached its limit M Horizon position at limit When turning the horizontal position knob alerts user that the horizontal position reached its limit M Volts Div at limit Alerts the user that the vertical volt Div knob was adjusted to the min 2mV div or maximum 5V div value E Volts position at limit When turning the vertical position knob alerts user that the vertical knob reached its limit M Sec Div at limit Prompts the user that the Volts Div is at full range while turning the vertical scale knob M Functions isn t useable Function not supported in this mode Example Reference mode is not available in YX format E No signal The system could not detect a suitable signal used in the auto set M Adjust at limit You could adjust the pulse width with the ADJUST knob until the pulse width has reached the min of 20 0ns or max 10 0s limit 5 2 Troubleshooting 1 If the screen remains dark after the oscil
11. large dynamic range use the dB Vrms scale The dBVrms scale displays component magnitudes using a log scale The Nyquist frequency is the highest frequency that any real time digitizing oscilloscope can acquire without aliasing This frequency is half that of the sample rate provided it is within the analog bandwidth of the oscilloscope Frequencies above the Nyquist frequency will be under sampled which causes aliasing 48 3 8 Set up the Horizontal system 3 8 1 Horizontal control knobs The oscilloscope shows the time per division in the center of the bottom status bar The horizontal controls change the horizontal scale and position of waveforms The horizontal center of the screen is the time reference for waveforms Changing the horizontal scale causes the waveform to expand or contract around the screen center The horizontal position knob changes the position of the trigger point relative to the center of the screen The oscilloscope digitizes waveforms by acquiring the value of an input waveform at discrete points The time base also controls the sampling rate of this digitizing process The sampling rate adjusts automatically to a value suitable for each selected Time Div scaling factor Refer to Appendix C for more detailed information Horizontal POSITION knob Adjusts the horizontal position of both channels and math waveforms The resolution of this control varies according to the horizontal scale factor m
12. the oscilloscope digitizes the signal and displays the resulting waveform on the screen The acquisition mode defines how the signal is digitized and the time base setting affects the time span and level of detail in the acquisition The sampling rate adjusts automatically to a value suitable for each selected Time Div scaling factor Refer to Appendix C for more detailed information Push the ACQUIRE button to access the Acquisition menu MEASURE ACQUIRE DISPLAY Acquire button Figure 2 8 20 Table 2 6 Acquire Menu Menu Set up Explanation Sampling Use to acquire and accurately display most waveforms Peak Detect Use to detect glitches and decrease the possibility of aliasing Average Select this mode to reduce the displayed random noise Averages 4 Specify number of averages 16 32 64 128 256 Mode Equ time Select realtime or equivalent sampling Real time The 3 acquisition modes Sample Peak Detect and Average Sampling In this acquisition mode the oscilloscope samples the signal in evenly spaced intervals to reconstruet the vvaveform This mode accurately represents the signal most of the time Advantage You can use this mode to reduce random noise Disadvantage This mode does not capture rapid variations in the signal that may occur between samples This can result in aliasing and may cause narrow pulses to be missed In these cases you should use the Peak Detect mode to acqui
13. type Hamming Window Rectangular Blackman IX Changes the horizontal magnification of the FFT display 2X FFT ZOOM 5X 10X dedi Vrms Set Vrms to be the Vertical Scale unit cale dB Vrms Set dB Vrms to be the vertical Scale unit B amp K I Trig d Pos 3 88RHz MATH 3 Operation TEE TEE Source CHI 1 25KHz 258 8RHz Blackman 1 61587KHz CH1 168mUrms Figure 3 16 46 Explanation of Figure 3 16 In this example the position at the center graticule is 3kHz Pos 3 00 kHz the frequency of the second harmonic The vertical scale is set to 100mVrms Div and the horizontal scale is set to 12 5kHz 1 25kHz x 10 zoom factor The window type is Blackman To use the Math FFT mode you need to perform the following tasks 1 Set up the source YT time domain waveform e Press AUTOSET to display a YT waveform e Turn the VERTICAL POSITION knob to move the YT waveform to the center vertically zero divisions e Turn the HORIZONTAL POSITION knob to position the part of the YT waveform that you want to analyze in the center eight divisions of the screen The oscilloscope calculates the FFT spectrum using the center 1024 points of the time domain waveform e Turn the VOLTS DIV knob to ensure that the entire waveform remains on the screen e Turn the Time DIV knob to provide the resolution you want in the FFT spectrum e _ If possible set the oscilloscope to display many signal cycles T
14. you use this mode the oscilloscope does not display a waveform until after the first trigger Sich When you want the oscilloscope to acquire a single waveform ingle press the SINGLE button DC Passes all components of the signal AC Blocks DC components and attenuates signals below 10 Hz Coupling HF Reject Attenuates the high frequency components above 80 kHz LF Reject Blocks the DC component and attenuates the low frequency components below 300 kHz Table 2 4 Video Trigger Menu Menu Setting Explanation Type Video When you select Video Trigger mode set coupling to AC Now you can trigger from a NTSC or PAL SECAM video signal Source CH Select the input source to be the trigger signal CH2 EXT Ext and Ext 5 use the signal applied to the EXT TRIG connector as the EXT S source Polarity Normal Triggers on the negative edge of the sync pulse Inverted Triggers on the positive edge of the sync pulse Sync Line Num Select on which part of the video signal you want to trigger All lines Odd field Even Field Standard NTSC Select the video standard for sync and line number count Pal Secam Table 2 5 Pulse Trigger Menu A pulse trigger occurs when a pulse is found in a waveform that matches the pulse definition The When and Set Width menu buttons control the pulse definition gt Negative pulse width less than pulse width setting kd Negati
15. 10 waveforms Save Recall control button SAVE RECALL USER SELECT UTILITY Figure 2 26 SAVE RECALL SETUP E SAVE RECALL Setup The complete setup is stored in nonvolatile memory When you recall the setup the oscilloscope will be in the mode from which the setup was saved The oscilloscope will automatically save the current setup if you wait three seconds after the last change before you power off the oscilloscope The oscilloscope recalls this setup the next time you apply power Up to 10 setups can be recalled stored 32 Table 2 13 Menu Setting Explanation Type Setups Menu for the Storage Recall setting in the oscilloscope Setup NO I to NO 10 Select the memory location to from which you want to save recall a setup Save Save a setup to the memory location selected Recall Recall a setup from the memory location selected Figure 2 27 z RECALL FACTORY You can use this option to recall the factory setup Select type Factory then press LOAD Figure 2 28 33 SAVE RECALL WAVEFORM E SAVE RECALL CAPTURED WAVEFORM The oscilloscope must display any waveform that you want to save The oscilloscopes can store ten captured waveforms in nonvolatile memory Table 2 15 Option Setup Introduction Type waveforms Menu for the Storage Recall waveforms in the oscilloscope waveform NO 1 to NO 10 Save Recall the waveforms in the currently position Save Accomplish
16. Circuitry Do not touch exposed connections and components when power is present Do Not Operate With Suspected Failures If you suspect there is damage to this product have it inspected by qualified service personnel Do Not Operate in Wet Damp Conditions Do Not Operate in an Explosive Atmosphere Keep Product Surfaces Clean and Dry Symbols and Terms on the Product D Protective Ground Earth Terminal dp CAUTION Refer to user manual Caution indicates a hazard to property including this product Introduction Description The 2530 amp 2532 Digital Storage Oscilloscope is a light weight benchtop oscilloscope for viewing waveforms and taking measurements The 2530 2532 is an ideal education and training tool and also well suited for applications in service and repair Key Features m 40 MHz bandwidth 500MSa s sample rate with color display model 2532 m 25 MHz bandwidth 250MSa s sample rate with monochrome display model 2530 m 4000 point record length for each channel One touch automatic setup for ease of use Auto E Save Recall setup and waveform data Capture save and analyze waveform data and measurement results with the included EasyScope Application Software Cursors with readouts E Eleven automatic measurements m Waveform averaging and peak detection m Math functions and x operations E Fast Fourier Transformation FFT E Extensive Trigger capabilities Pulse Width trigger Video
17. Counts the times the unit was turned on off Software version Gives the software version Hardware Version Gives the hardware version Product type Lists the model number Serial No List the unit s serial number 2 7 3 Self Calibration Before executing the Self Calibration routine disconnect all probes and leads from the input connector Then press the Utility button and select Do self cal to show the self Calibration Menu Disconnect Everything from ll Inpats Figure 2 25 2 7 4 Self Test Table2 12 Press UTILITY Do Self Test Option Introduction Screen Test Run Screen Test Program Reyboard Test Run Reyboard Test Program LED Test Run LED Test Program 31 1 Screen Test Select Screen Test to enter the screen mode Press the SINGLE key to continue press RUN STOP to exit 2 Keyboard Test Select Keyboard Test to enter the key test mode The shapes with two arrows beside them represent the front panel knobs The squares represent the knob presses for scale knobs Test all keys and knobs and verify that all the backlit buttons illuminate correctly Press RUN STOP 3 times to exit 3 LED test Select LED Test to run the LED test procedure Continually press the SINGLE key to step through all the buttons Press RUN STOP to exit 2 8 Save Recall System Use this menu to save and recall waveforms and setups The instrument can store recall 10 setups and
18. ach time a sample is XY acquired on channel and channel 2 Normal set to normal mode Screen Inverted set to invert color display mode Display grids and axes on the screen Grid Turn off the grids Turn off the grids and axes MPosiggaus DISPLAY MPos 8 00ps DISPLAY Format ee ee eee eee CeCe CEES DEED EE ey Next Page CHIN 2 900 MENTA CHE GMA Figure 2 14 CHin 2 980 Figure 2 15 24 2 5 1 X Y Format Use the XY format to analyze phase differences such as those represented by Lissajous patterns The format plots the voltage on channel 1 against the voltage on channel 2 where channel 1 is the horizontal axis and channel 2 is the vertical axis The oscilloscope uses the untriggered sample acquisition mode and displays data as dots In this mode the sampling default sampling rate is 1 MSa s and is adjustable from 5kSA s 200 MSa s Note The oscilloscope can capture a waveform in normal YT mode at any sampling rate You can view the same waveform in XY mode To do so stop the acquisition and change the display format to XY In this mode the controls operate as followed The Channel 1 Volts div and vertical POSITION controls set the horizontal scale and position The Channel 2 Volts div and vertical POSITION controls continue to set vertical scale and position The following functions do not work in XY mode Reference or math waveform Cursors Autose
19. ases any waveform which was saved on the screen using persistence Use holdoff to help stabilize the display of aperiodic waveforms 2 3 Trigger System The trigger determines when the oscilloscope starts to acquire data and display a waveform The oscilloscope acquires data while waiting for the trigger condition to occur After it detects a trigger the oscilloscope continues to acquire enough data so that it can draw the waveform on the display Below are the trigger section controls TRIGGER SET TO A 50 Vv Figure 2 5 TRIG MENU Button pressthe TRIGMENU Button to display the TRIG MENU CHlw 2 90U Figure 2 6 15 E LEVEL Knob Set the trigger level E SETTO50 Button Use the SET TO 50 button to stabilize a waveform quickly The oscilloscope automatically sets the Trigger Level about halfway between the minimum and maximum voltage levels This is useful when you connect a signal to the EXT TRIG BNC and set the trigger source to Ext or Ext 5 E FORCE Button Use the FORCE TRIG button to complete the current waveform acquisition regardless of whether or not the oscilloscope detects a trigger This is useful for SINGLE acquisitions and Normal trigger mode 2 3 1 Signal Source You can use the Trigger Source options to select the signal that the oscilloscope uses as a trigger The source can be any signal connected to the CH1 or CH2 connectors the EXT TRIG comnector or the AC power lin
20. 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 COMP connector gt de PROBE COMP CH1 Figure 1 3 Press the AUTO button After a few seconds you should see a square wave signal with a 1KHz frequency and about 3V peak peak amplitude Figure 1 4 Press the CH1 button two times to remove the signal from CH1 Repeat steps 2 and 3 for CH2 1 3 Probe handling 1 3 1 Probe Safety A guard around the probe body provides a finger barrier for protection from electric shock Q Figure 1 5 Connect the probe to the oscilloscope and connect the ground terminal to ground before you take any measurements WARNING e To avoid electric shock when using the probe keep fingers behind the guard on the probe body e 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 1 3 2 Probe Compensation Perform this adjustment to match your probe to the input channel This should be done whenever you attach a probe to any input channel for the first time AUTOSFT Bullon PROSE gt e COMP Cot Figure 1 6 1 Set the Probe option attenuation in the channel menu to 10X Set the switch to 10X on the probe and connect the probe to channel 1 on the osci
21. e available only with Edge trigger 2 3 2 Trigger Type The 2530 series supports three types of Trigger signals Edge Video and Pulse Trigger Edge trigger can be used with analog and digital circuits An edge trigger occurs when the trigger input passes through a specified voltage level with the specified slope Pulse trigger is used to find pulses with certain pulse widths Video is used to trigger on fields or lines for standard video waveforms Table 2 3 Edge Trigger Menu Menu Setting Explanation With Edge selected the rising or falling edge of the input signal is Type Edge used for the trigger CH Triggers on CH1 or CH2 regardless of whether or not the waveform CH2 is displayed ve Uses the signal connected to the EXT TRIG front panel BNC as trigger source Trigger level range is 2 4V to 2 4V Source he Same as EXT but attenuates the applied trigger signal by a factor of five The trigger level range is extended to 12V to 12V I Uses power line as the trigger source Trigger coupling is set to DC AC Line and the trigger level is 0 volts Rising Trigger to the rising or falling edge Slope I Falling Use the Auto Mode to let acquisition free run in the absence of a Auto valid trigger condition This mode also supports an untriggered scanning waveform at 100 ms div or slower time base settings eli Use this mode when you want to see only valid triggered ode Normal waveforms When
22. e time between the first falling edge and the next rising edge at the waveform 50 level Prd Measure the Period Freq Measure the Frequency The instrument displays 2500 points the included EasyScope application Software Select All measurements to display all eleven measurements at once play MEASURE NS f S Source Ualue 27 ens All Mes CHE Em M256ns Clm ZIGA Fig 2 21 29 The full record length of 4000 points can be retrieved from internal memory with 2 7 Utility System The Utility System Button DEFAULT SETUP AUTO SAVE RECALL USER SELECT UTILITY mall Utility Setup button Figure 2 22 Table 2 9 Utility Menu options Option Setting Comment System Status Displays information about the hardware and software configuration Sound This option turns the button beep on or off Counter On Turn the Trigger frequency counter On Off Off Language English DO self cal Run the Self Calibration routine Do Self Test Screen Test Run a screen test Keyboard Test Run a keyboard test LED Test Run the LED test Press the UTILITY button to see the Utility menu TS UTILITY y e N N K R OOOO DUT faria CHi 299 Figure 2 23 Figure 2 24 30 2 7 1 System status Selecting System Status from the Utility Menu to display information about a particular unit Table 2 10 Display Explanation Startup Times
23. eo trigger 3 Press the Sync operation button select the line number 4 Turn the ADJUST knob to adjust Line Num 3 6 Setting up the Vertical System 3 6 1 Setting up the CH1 CH2 Channels Each channel has its own separate Menu The items are set up separately according to each channel 1 Set up the coupling mode Apply a sine wave signal with a DC offset to CH1 e Press CHI Coupling AC Set AC coupling mode Now the DC component of the signal is blocked Set to AC Coupling AC status Figure 3 5 e Press CH1 Coupling DC Set DC coupling mode Both the DC and AC component of the signal will be passed on and displayed on the screen 40 Set to IC Coupling Figure 3 6 e Press CH1 Coupling GND Select GROUND mode to disconnect the input signal M Pos Ous Set to GND Coupling M25 0n GND status Figure 3 7 2 Volts Div settings Vertical scaling can be adjusted in 2 modes Coarse and Fine The vertical sensitivity range is 2mV div 5V div scale Take CH1 for example e Press CH1 Volts Div Coarse This is the default setting of Volts Div and it allows adjustment of the vertical scale in a 1 2 5 step sequence starting from 2mV Div 5mV Div 10mv div up to 5V Div 41 Mick P ys CHi Cortina i 1 EM he Coarse ol Figure 3 10 ePress CH1 Volts Div Fine Thi
24. f the reference waveform 44 3 7 Math Functions This oscilloscope supports arithmetic math functions and FFT operations which depending on the operation can be applied to either channel or both channels Press the MATH MENU button to display the waveform math operations Table 3 3 MATH Menu Function Set up Comment Operation FFT Source 1 plus Source 2 CH 1 Invert on Invert the CH1 waveform off CH2 Invert on Invert the CH2 waveform off Table 3 4 Operation Set up Introduction CH1 CH2 Add CH1 and CH2 waveforms CH1 CH2 Subtract channel 2 from channel 1 vvaveform 7 CH2 CH1 Subtract channel 1 from channel 2 waveform ij CH1 CH2 Multiply CH1 with CH2 waveform CH1 CH2 CH1 divided by CH2 waveform CH2 CH1 CH2 divided by CH1 waveform FFT Fast Fourier Transform DIOU DES E Figure 3 15 45 1 FFT Spectrum Analyzer The FFT process mathematically converts a time domain signal into its frequency components You can use the Math FFT to analyze the following type of signals e Characterize noise in DC Power supplies e Test the impulse response of filters and systems e Analyze vibration e Analyze harmonics in power lines e Measure harmonic content and distortion in a system Table 3 5 FFT Option Set Introduction CH1 Select the channel to which you want to apply the FFT Source CH2 operation Hanning Select the FFT window
25. f 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 amp K Precision Corp 22820 Savi Ranch Parkway Yorba Linda CA 92887 www bkprecision com 714 921 9095 69 Edition 1 2 EX PRESTO 22820 Savi Ranch Parkway Yorba Linda CA 92887 www bkprecision com 2007 B amp K Precision Corp Printed in China
26. form turn counter clockwise Pressing the Volts Div knob toggles between Coarse and Fine mode In the Fine mode the knob adjusts the Volts Div factor in small increments between the coarse settings 3 When you adjust the vertical position of a channel waveform the vertical position information will be displayed on the bottom left of the screen 3 6 3 Using Ref The reference control saves waveforms to nonvolatile waveform memory The reference function becomes available after a waveform has been saved Press the Ref button to display the reference waveform menu Table 3 7 Option Setup Comment Source CH1 Choose the waveform display you want to store This option is turned OFF CH2 if the corresponding channel is turned off REF A Choose the store recall location B Save Store the current waveform to the selected location REFA REFB On Determines which reference wave from is visible on the screen Off How to Save and Recall waveforms 1 Press the REF menu button to display the reference waveform menu 2 Select channel or channel2 3 Turn the vertical POSITION knob and Volt div knob to adjust the vertical position and scale appropriately 4 Press Save to save waveforms on the current screen as ref waveforms 5 Recall reference waveform by setting REF A or REB to On Note The Ref function is not available in XY mode You cannot adjust the horizontal position and scale o
27. ime The oscilloscope digitizes waveforms by acquiring the value of an input signal at discrete points The time base allows you to control how often the values are digitized Appendix C details the corresponding sampling rate for each time base setting To adjust the time base to a horizontal scale that suits your purpose use the Time DIV knob Time Domain Aliasing Aliasing occurs when the oscilloscope does not sample the signal fast enough to construct an accurate waveform record When this happens the oscilloscope displays a waveform with a frequency lower than the actual input waveform or triggers and displays an unstable waveform Actual high frequency waveform gt Apparent low frequency waveform due to aliasing Sampled points Figure 2 12 2 5 Display System Push the display button to choose how waveforms are presented and to change the appearance of the entire display Display System MEASURE ACQUIRE DISPLAY Figure 2 13 23 Table 2 7 Options Set up Explanation Vectors Vectors fills the space between adjacent sample Type Dots points in the display Display sample points Off Sets the length of time each sampling point 1 sec remains visible Persist 2 sec 5 sec Infinite Increase the display contrast Contrast Decrease the display contrast YT YT format displays the vertical voltage in relation to time horizontal scale Format XY format displays a dot e
28. izes noise spikes and glitches in your signal especially when the time base is set to a slow setting 4 4 2 Separating the Signal from the Noise To reduce random noise in the oscilloscope display follow these steps 1 Press the ACQUIRE button to display the acquire menu 2 Press the Average button 3 Press the Averages button and vary the number and monitor the effect on the waveform Averaging reduces random noise and makes it easier to see detail in a signal 4 5 Triggering on a Video Signal Scenario Observe the video circuit in an analog TV set Use the video trigger to obtain a stable display 4 5 1Triggering on a Video Field To trigger on the video field follow these steps 56 Press the TRIGMENU button to see the trig menu Press the top option button and select Video Press the source option button and select CH1 Press the Sync option button and select Odd Field or Even Field Press the Standard option button and select NTSC Adjust the horizontal Time Div knob to see a complete field across the screen Turn the vertical Volts Div knob to ensure that the entire video signal is visible on the screen 4 5 2 Triggering on Video Lines To trigger on the video lines follow these steps 1 2 3 Press the TRIGMENU button to see the trig menu Press the top option button and select Video Press the Sync opti
29. l inverted off Horizontal position Adjusted Time div Adjusted Trigger type Edge Trigger source Auto detect the channel which has the input signal Trigger slope Rising Trigger mode Auto Trigger coupling DC Trigger holdoff Minimum Trigger level Set to 50 3 5 Using the ADJUST knob DEFAULT SETUP AUTO SAVE RECALL USER SELECT UTILITY ADJUST knob Figure 3 4 The 2530 Series Digital Storage Oscilloscope comes with an ADJUST knob Use this knob to set up the holdoff time cursor positions for measurements pulse width and the Video Line number Adjust holdoff time 1 Press the HORI MENU button to show the Hori Menu 2 Press the holdoff option button 3 Turn the ADJUST knob to adjust the holdoff time Cursor Measure 1 Press the CURSORS button to display the cursor Menu 2 Press the Source option button to select the source 39 3 Press the Curl option button turn the ADJUST knob to adjust Curl 4 Press the Cur2option button turn the ADJUST knob to adjust Cur2 5 The value of Cursorl and Cursor2 is incremented and displayed on the top right of the screen Pulse Setup 1 Press the TRIG MENU button to display the Trigger Menu 2 Press the Type Option and choose Pulse 3 Press the Set Width button 4 Turn the ADJUST knob to adjust the pulse width Set the Video Line Number 1 Press TRIG MENU to show the Trigger Menu 2 Press the Type button and select Vid
30. lect Infinite 11 Press the Contrast or Contrast option buttons to adjust the contrast of the screen 12 Apply the Ellipse method to observe the phase difference between the two channels i Al 4 C y Y Figure 4 3 sind A B or C D where 0 phase shift in degrees between the two signals From the formula above you could get 0 arcsine A B or arcsine C D 4 7 Analyzing a Differential Communication Signal You are having intermittent problems with a serial data communication link and you suspect poor signal quality Set up the oscilloscope to show you a snapshot of the serial data stream so you can verify the signal levels and transition times Because this is a differential signal you can use the math function of the oscilloscope to view a better representation of the waveform To activate the differential signals connected to channel 1 and channel 2 follow these steps 1 Press the CH 1 button and set the Probe option attenuation to 10X Press the CH 2 button and set the Probe option attenuation to 10X Set the switches to 10X on the probes Press the AUTO button Press the MATH button to see the Math Menu Press the Operation option button and select XA Dn YU A U N Press the CH1 CH2 option button to display a new waveform that is the difference between the displayed waveforms 8 You can adjust the vertical scale and position of the Math waveform To
31. lloscope If you use the probe hook tip ensure a proper connection by firmly inserting the tip onto the probe 2 Attach the probe tip to the PROBE COMP 3V connector and the reference lead to the PROBE COMP Ground connector Display the channel and then push the AUTOSET button 3 Check the shape of the displayed waveform Over compensated Correctly Compensated Under compensated 4 If necessary use a non metallic tool to adjust the trimmer capacitor on the probe for to resemble the Correctly Compensated wave shape as much as possible Repeat as necessary 1 3 3 Probe Attenuation Setting Probes are available with various attenuation factors which affect the vertical scale of the signal If you change the Attenuation switch on the probe you also need to change the attenuation setting on the oscilloscope accordingly Note The default setting for the Probe option is 10X Be sure that the Attenuation switch on the probe matches the Probe option in the oscilloscope Switch settings are 1X and 10X Note When the Attenuation switch is set to 1X the probe limits the bandwidth of the oscilloscope to 6MHz To use the full bandwidth of the oscilloscope be sure to set the svvitch to 10X 1 4 Self Calibration The self calibration routine lets you optimize the oscilloscope s signal path for maximum measurement accuracy You can run the routine at any time but should always run the routine if the ambient temperat
32. loscope is powered on try the following a Check if the power cable is connected properly b Ensure the power switch is turned on c After verifying a and b restart the oscilloscope d Ifthe oscilloscope is still not working contact your authorized B K Precision distributor 2 If there is no signal displayed on the screen do the following a Verify that the probe or BNC cable is properly connected to CH1 or CH2 b Make sure your BNC cable or probe is connected to a life signal 3 If the signal amplitude is 10 times higher lower than the actual signal try the following Check the attenuation factor and make sure it matches the probe attenuation setting 4 If the waveform is displayed but not stable do the following a Make sure signal source and trigger setup match b Check the trigger mode Common signals should use Edge trigger Video signals should the Video 60 Trigger mode The signal will be stable only if the appropriate trigger mode is used c Try changing coupling to HF Reject or LF Reject to filter out High low frequency noise 5 No display after pressing the RUN STOP button a Check the trigger mode is set to Normal or Single b Check the trigger level exceeds the maximum vaveform amplitude If so please put the trigger level to the middle position or set the trigger mode to Auto Or you could press the Auto button to do the set up automatically 6 After Acquisition is set to Averages or Displa
33. lter out unwanted high frequency components Volts Div Coarse Selects the resolution of the Volts Div knob Coarse defines a 1 2 5 sequence Fine Fine changes the resolution to small steps between the coarse settings 1X Set to match the type of probe you are using to ensure correct vertical readouts 10X Probe 100X 1000X Invert on Waveform inverted off Invert function is off original waveform is displayed Vertical POSITION knob Use the VERTICAL POSITION knobs to move waveforms up or down on the screen Volts Div knob Use the VOLTS DIV knobs to control how the oscilloscope amplifies or attenuates the source signal When you turn the VOLTS DIV knob the oscilloscope increases or decreases the vertical size of the waveform on the screen with respect to the ground level Press the Volt div knob to toggle between Coarse and Fine adjustment of the Volt Div setting GND Coupling Use GND coupling to display a zero volt waveform Internally the channel input is connected to a zero volt reference level Fine Resolution The vertical scale readout displays the actual Volts Div setting while in the fine resolution setting Changing the setting to coarse does not change the vertical scale until the VOLTS DIV control is adjusted Remove the Waveform from the display Push the CH1 or CH2 button to display the respective vertical menu Push CH1 or CH2 button again to remove the waveform Note e IfDC coupling is
34. ng the Menu System When you press a front panel button the oscilloscope displays the corresponding menu on the right side of the screen The menu shows the options that are available when you press the unlabeled option buttons directly to the right of the screen 36 The oscilloscope uses three methods to display menu options Circular List The oscilloscope sets the parameter to a different value each time you press the option button Action The oscilloscope displays the type of action that will immediately occur when you push an Action option button For example when you push the DISPLAY Menu button and then push the Contrast Increase option button the oscilloscope changes the contrast immediately Radio The oscilloscope uses a different button for each option The currently selected option is highlighted Circular list Action Figure 3 3 3 3 Using the default setup The oscilloscope is set up for normal operation when it is shipped from the factory This is the default setup To recall this setup press the DEFAULT SETUP button The options buttons and controls that change settings when you press the DEFAULT SETUP button refer to appendix B The DEFAULT SETUP button does not reset the following settings Saved reference waveform files Saved setup files Display contrast Calibration data 3 4 Using the auto setup The 2530 amp 2532 Digital Storage Oscilloscope has an auto setup function which can identify the
35. nn A cans 39 3 6 Setting up the Vertical System cccecescescessesseeseceecesceeceseeseeaecseceeceeeeseeaeenaeeseens 40 3 6 1 Setting up the CH1 CH2 Channels 40 3 6 2 Using the Vertical Position knob and Volts Div knob ooooconccnncncnicnicnionioncnnooos 44 3 63 Usine Re steet A deia EAE enee 44 2 Math sFunctioms silicat tea i er cens 45 3 8 Setting up the Horizontal system oooocononicninnnonionoonconnonnonn cnn non non cnn nncnnonnonn non connnnnnos 49 3 8 1 Horizontal control knobs non iSe 49 EE 49 3 8 3 AAA 50 SS EE 50 3 10 Menu and control button ode deed ENNER 51 SEV ee 51 Chapter 4 Application Examples 53 4 1Taking Simple Measurements non non non nonnrnoronnrnn ron nrn rra nrnnnrnrnnnos 53 4 2 Taking Cursor Measurements ccccesceeseeseeseeeeeesceseesceeeeeeeeeeeecaeeseeneeeeseeeeneenees 54 4 2 2 Measuring Ring Amplitude 55 4 3 Capturing a Single Shot senga 55 4 4 Analyzing signal details cita id teta 56 4 4 1 Looking at a Noisy Signal 56 4 4 2 Separating the Signal from the Noise 56 4 5 Triggering on a Video Signal 56 4 5 1 Triggering on a Video Field 56 4 5 2 Triggerimg on Video Lines eebe eegen tae E 57 4 6 Application for the X Y function 57 4 7 Analyzing a Differential Communication Signal 58 Chapter 5 Prompt messages and troubleshooting hints 60 Appendix A S
36. o set up the FFT display follow these steps Push the MATH MENU button Set the Operation option to FFT Select the Math FFT Source channel 2 Displaying the FFT Spectrum Press the MATH MENU button to display the Math Menu Use the options to select the Source channel Window algorithm and FFT Zoom factor You can display only one FFT spectrum at a time 3 Select an FFT window Windows reduce spectral leakage in the FFT spectrum The FFT assumes that the YT waveform repeats forever With an integral number of cycles the YT waveform starts and ends at the same amplitude and there are no discontinuities in the signal shape A non integral number of cycles in the YT waveform causes the signal start and end points to be at different amplitudes The transitions between the start and end points cause discontinuities in the signal that introduce high frequency transients There are 4 FFT windows Each window has trade offs between frequency resolution and amplitude accuracy Your source waveform characteristics along with your measurement priorities help determine which window to use Use the following guidelines to select the best window 47 Table 3 6 Window Characteristics Application Measurement Best frequency resolution worst Symmetric transients or bursts magnitude resolution This is Equal amplitude sine waves with Rectangular essentially the same as no window fixed frequencies Broadband random noise with a
37. of the 5 measurements do the following 27 1 Press one of the five option buttons corresponding to measurement 1 5 This will open a sub menu 2 Enter the Source of the measurement and the measurement type 3 Press the bottom option button to turn the measurement on If you want to display all eleven measurements at once select All Mea from the sub menu step 2 Voltage Measurements Max Min Peak Peak Average Vrms CHIEN 2000 Figure 2 19 Time Measurements Rise time Fall time Frequency Period positive pulse width negative pulse width Sawer CHin 2 08 Figure 2 20 28 2 8 Measurement Types Measure Type Introduction Vmax Vmax examines the entire 2500 point waveform record and displays the maximum value Vmin Vmin examines the entire 2500 point waveform record and displays the minimum value Vpp calculates the absolute difference between the maximum and minimum Vpp peaks of the entire waveform Vavg Count the arithmetic average value in the record Vrms Calculates a RMS measurement of the first complete cycle of the waveform Rise Time measures the time between 10 and 90 of the first rising edge Rise of the waveform Fall Fall Time measures the time between 90 and 10 of the first falling edge of the waveform e Width measures the time between the first rising edge and the next falling Width edge at the waveform 50 level Width Width Measures th
38. on button and select Line Num and turn the universal knob to set a specific line number Press the Standard option button and select NTSC Turn the Time Div knob to see a complete video line across the screen Turn the Volts Div knob to ensure that the entire video signal is visible on the screen 4 6 Application for the X Y function Viewing Impedance Changes in a Network Scenario You want to evaluate the impedance changes in your circuit as the ambient temperature is changing Connect the oscilloscope to monitor the input and output of your circuit To view the input and output of the circuit in an XY display follow these steps l 2 3 4 5 6 7 8 Press the CH 1 MENU button and set the Probe option attenuation to 10X Press the CH 2 MENU button and set the Probe option attenuation to 10X Set the switches to 10X on the probes Connect the channel 1 probe to the input of the network and connect the channel 2 probe to the output Press the AUTO button Turn the VOLTS DIV knobs to display approximately the same amplitude signals on each channel Press the DISPLAY button Press the Format option button and select XY The oscilloscope displays a Lissajous pattern representing the input and output characteristics of the circuit 57 9 Tum the VOLTS DIV and VERTICAL POSITION knobs to optimize the display 10 Press the Persist option button and se
39. onconconononinnconconnonnnos 24 DO self alivia 30 Do Self Leet eege EE 31 Equivalent Time Sampling 23 EXT siemens nn tbe aan Mee 17 EXT TRIG i er S 53 ER E EE 17 Falles ie et Ee re ia 29 EF Rei tea hr Mamie nes 46 Fine Resolution coooncincnnnnionnonnonnoononnconconnon nono 12 FORCE iii seuen ae 16 52 Functional check esse 6 A mA ere ace 25 Hold ies citats terres otra uereg 14 Horizontal System 13 rr 12 Language Seeerei e ee Ste 30 LEVEL az 16 52 MEASURE ciudadanas 27 Measure system 26 Menu and control button 52 Model a res 17 Normal 02 chen denne Wee idea 17 Operation Basics 36 Peak Detection ia isidro 22 A nee et en ot 24 Polar eo Pe Tala er ep 18 68 Post eee de eh dent let 19 Probe hs ne AR er Me nan 8 12 Probe Attenuation Setting 9 Probe Compensation 8 Probe component 53 Probe Rate uge units fete 8 Real Time Sampling 23 REP Ee 45 UE nn AE me de net ere 29 RUN STOP rm cinta 23 52 LU UL 21 SAVE REGALL ebe nites anion 33 SAVE RECALL WAVEFORM 34 35 Scale Measurement 26 TEE A me de 25 Self Calibration iii ci ia 10 Self TESt etat tai end 32 SETTOSO A cuantas 16 Set trigger system aca iii lata 51 Set up the Horizontal system 50 Setting up the Vertical System 41 Signal Souree emanen 16 Singles sets mures 17 23 52 SOU dit 30 Sto
40. pecifications 62 Appendix B Default Setup nes 65 Appendix C Sample Rate versus Timebase Setting 66 Appendix D Daily Maintenance and Cleaning 66 Appendix Det 68 Appendix F Service and Warranty Information 69 Chapter 1 Getting Started This Chapter describes the following 9 Installation Basic functional check Probe check and compensation Setting of probe attenuation factor 2 Self calibration procedure 1 1 Installation Inspection Inspect the shipping container and the product for damage In case of any damage notify your authorized B K Precision distributor Make sure all the accessories as described in the specification chapter are included Power Source Connect your instrument to an AC power outlet delivering 100 240V 47 440 Hz Use the power cord provided or a comparable cord with an Earth ground connector Security Loop The instrument provides a security loop located in the rear panel of the instrument Use a security cable or a security lock to secure your instrument to your location 1 2 Functional check Perform this check to make sure your instrument is operating correctly 1 Power On the oscilloscope Press the DEFAULT SETUP button Note that the probe default attenuation is 10X a 4 ON OFF button Figure 1 2 Set the switch to 10X on the included probe and connect it to channel 1 on the oscilloscope To
41. perly the oscilloscope converts unstable displays or blank screens into meaningful waveforms The trigger Control area includes the Level knob TRIG MENU button SET TO 50 button and FORCE 50 button a LEVEL knob The LEVEL knob sets the amplitude level the signal must cross to cause an acquisition a SET TO 50 The trigger level is set to the vertical midpoint between the peak values of the trigger signal a FORCE button Completes an acquisition regardless of an adequate trigger signal This button is usually used in normal mode and single mode 3 10 Menu and control button RUN CONTROL D DEFAULT SE Lauro SAVE RECALL ee Figure 3 23 CURSORS Display the Cursor Menu MEASURE Display the automated measurements menu ACQUIRE Display the Acquire Menu DISPLAY Display the Display Menu UTILITY Display the Utility Menu SAVE RECALL Display the Save Recall Menu for setups and vvaveforms DEFAULT SETUP Recall the factory setup AUTO Automatically sets the oscilloscope controls to produce a usable display of the input signals RUN STOP Continuously acquires vvaveforms or stops the acquisition Note If waveform acquisition is stopped using the RUN STOP or SINGLE button the TIME DIV control expands or compresses the waveform M SINGLE Acquire a single waveform and then stop 3 11 Connectors SI CH1 CH2 EXT_TRIG E x A Y All inputs IMO 13pF 300V RMS Figure 3 24 KH
42. rage System cccceccesseeeeeceeeenteceeeeeres 32 SVC SES vets sits rein en ete rente serie 18 Time Cursor tanda 27 AAA a 14 TRIG MENU tios BR 15 Troubleshooting ccceseesecseeseeeseeseeeeeeeeees 60 Universal knob 40 OTI test ed ee 30 Utility Mii 30 VI a 29 Vertical System 11 VMAX AA A Ae 29 Mt iii ira RE 29 Volt div ste serps es rau e 12 Voltage Cursor 27 n HE 29 VEINS i ia hens eal M Nina 29 Wave Cancel 13 Wind OW iere a Ra ep RA 14 Window Zong cirie 50 XY e EE 25 DA EE 25 Appendix F Service and Warranty Information Service Information Warranty Service Please return the product in the original packaging with proof of purchase to the address below Clearly state in writing the performance problem and return any leads probes connectors and accessories that you are using with the device Non Warranty Service Return the product in the original packaging to the address below Clearly state in writing the performance problem and return any leads probes connectors and accessories that you are using with the device Customers not on open account must include payment in the form of a money order or credit card For the most current repair charges please visit www bkprecision com and click on service repair Return all merchandise to B amp K Precision Corp with pre paid shipping The flat rate repair cha
43. re data Figure 2 9 Sampling mode Peak Detect Peak Detect finds the maximum and minimum values of a signal Advantage In this way the oscilloscope can acquire and display narrow pulses which may have otherwise been missed in Sample mode Disadvantage Noise will appear to be higher in this mode 21 Mode Figure 2 10 Peak Detect mode Average The oscilloscope acquires several waveforms averages them and displays the resulting waveform Advantage You can use this mode to reduce random noise Figure 2 11 Average mode E Equivalent Time Sampling The equivalent time sampling mode can achieve up to 20 ps of horizontal resolution equivalent to 50 GSa s This mode is good for observing repetitive waveforms Real Time Sampling The maximum sampling rate for the 2530 is 250 MSa s and 500MSa s for the 2532 E RUN STOP Button Press the RUN STOP button when you want the oscilloscope to acquire waveforms continuously Run Stop button is green Press the button again to stop the acquisition Run Stop button is red 22 E SINGLE Button Push the SINGLE button when you want the oscilloscope to acquire a single waveform and then stop Make sure the Run Stop button is green and the display annunciator is in the Ready state After the oscilloscope detects a trigger it completes the acquisition then stops Each time you push the SINGLE button the oscilloscope begins to acquire another waveform Base t
44. readouts Access the Cursor menu by pressing the Cursor ACQUIRE DISPLAY Cursors Button Figure 2 16 button Table 2 7 Functional Menu of the Cursor Menu Setting Comment Type Voltage Select and display the measurement cursors The horizontal cursor measures Time amplitude and the vertical cursor measures time and frequency Off Source CH1 Select the wave form source to be measured by the cursors CH2 MATH REFA REFB Curl Activate Cursor 1 Use the ADJUST knob to adjust the cursor position D Cur2 Activate Cursor 2 Use the ADJUST knob to adjust the cursor position D 26 Figure 2 17 Voltage Cursor Voltage cursors appear as horizontal lines on the display and measure the vertical parameters Time Cursor Time cursors appear as vertical lines on the display and measure the horizontal parameters mE Moving Cursors Use the ADJUST knob to move cursor and cursor2 Cursors can be moved when the cursor menu is displayed 2 6 3 Auto Measurement MEASURE When you take automatic measurements the oscilloscope does all the calculating for you Because this method relies on the digital samples of the waveform this method is more accurate than graticule or cursor measurements Auto Measurement button ACQUIRE DISPLAY Figure 2 18 Press the MEASURE button There are 11 types of measurements available You can display up to five measurements at a time To define each
45. relatively slowly varying spectrum Better frequency poorer magnitude Sine periodic and narrow band Hanning accuracy than Rectangular random noise Asymmetric Hamming Hamming has slightly better transients or bursts frequency resolution than Hanning Best magnitude worst frequency Single frequency waveforms to Blackman resolution find higher order harmonics 4 Magnifying and Positioning an FFT Spectrum You can magnify and use cursors to take measurements on the FFT spectrum The oscilloscope includes an FFT Zoom option to magnify horizontally To magnify vertically you can use the vertical controls 5 Measuring an FFT Spectrum Using Cursors You can take two types of measurements on FFT spectrums magnitude in dB and frequency in Hz Magnitude is referenced to 0 dB where 0 dB equals 1 Vrms You can use the cursors to take measurements at any zoom factor Use horizontal cursors to measure magnitude and vertical cursors to measure frequency Make sure to select the MATH as source in the cursor menu The options display the delta between the two cursors the value at cursor 1 position and the value at cursor position Delta is the absolute value of cursor 1 minus cursor 2 NOTE e The FFT of a waveform that has a DC component or offset can cause incorrect FFT waveform magnitude values To minimize the DC component choose AC Coupling on the source waveform To display FFT waveforms with a
46. rge for Non Warranty Service does not include return shipping Return shipping to locations in North American is included for Warranty Service For overnight shipments and non North American shipping fees please contact B amp K Precision Corp B amp 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 One Year Warranty B amp 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 one year from date of purchase B amp 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 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 amp K Precision Corp shall not be liable for any consequential damages including without limitation damages resulting from loss o
47. s DIV 50 s DIV 25 ns DIV 50 s DIV Roll mode 100ms DIV 50s DIV 1 2 5 sequence Measure Display Modes MAIN WINDOW WINDOW ZOOM ROLL X Y Acquisition System 2532 2530 Real Time Sample Rate 500MSa s 250 MSa s Equivalent Sample Rate 50GSa s Acquisition modes Real time Equivalent Record Length 4000 samples for each channel Sampling modes Sample Peak Detect Average N selectable from 4 16 32 64 128 256 The instrument displays 2500 points 4000 points can be retrieved from internal memory with the included EasyScope application Software This mode is supported for time base settings ranging from 2 5us Div 50ms Div This option is not supported in scan mode which is automatically activated when selecting a time base setting in the 100ms div 50s div range 62 sample rate 2532 The maximum sample rate is 500MSa s for single channel operation With both channels active the sample rate for each channel is half or 250MSa s X Y Mode X pole Input Y Pole Input Channel 1 CH 1 Channel 2 CH2 Phase Error 3 degrees Trigger System Trigger Types Edge Pulse Width Video Trigger Modes Auto Normal Single Trigger Coupling AC DC LF reject HF reject Trigger Source CH 1 CH2 AC line Ext Ext 5 Trigger Level Range CH 1 CH2 12 divisions from center of screen EXT 2 4V EXT 5
48. s setting changes the vertical scale to small steps between the coarse settings It is useful when you need to adjust the vertical scale in small steps to set a specific value MPos 0 00ys Coupling Fine CHI 39 0mU Figure 3 11 4 Probe Attenuation The setting of the attenuation coefficient in the menu must match the setting of the probe If the attenuation coefficient is 10 1 the input coefficient should be set to 10X in order to obtain correct readings Example Probe connected to CH1 has factor of 100 1 e Press CH1 gt Probe 100X 42 MP s CHI Coupling Probe attenuation fac tor Status changes with the probe attenuation Figure 3 12 5 To invert a waveform e Press CH1 gt Invert off M Posos CHL H gt Invert ANO TE CH 19 04 CHL ABAM ePress CH1 Invert on N Figure 3 14 43 3 6 2 Using the Vertical Position knob and Volts Div knob 1 The vertical POSITION knob is used to adjust the vertical position of each channel including MATH and REF wave This Enob s resolution varies according to the currently set scale factor set by Volts Div knob 2 The Volts Div knob adjusts the vertical resolution of each channel including the MATH and REF waves In Coarse mode the scale factor steps are adjustable in a 1 2 5 step sequence To magnify the display signal turn the knob clockwise to decrease the wave
49. s to move the waveform to the right or left on the display Use a pretrigger setting to acquire waveforms leading up to a trigger event Use a post trigger setting when you want to acquire waveforms that follow an event When the trigger point downward arrow moves outside the acquired waveform reaches the left or right edge of the screen the instrument switches automatically to delayed sweep indicated by the arrow pointing left or right instead of downwards In delayed sweep mode you can use the horizontal time Div knob to acquire more detail around the center of the screen 2 3 5 Slope amp Level The Slope and Level controls help to define the trigger The Slope option Edge trigger type only determines whether the oscilloscope finds the trigger point on the rising or the falling edge of a signal The TRIGGER LEVEL knob controls where on the edge the trigger point occurs Rising edge Falling edge Aeon pasnipe sq ues jaaaj 1866111 Figure 2 7 Press the SINGLE button when you want the oscilloscope to acquire a single waveform Trigger coupling affects only the signal passed to the trigger system It does not affect the bandwidth or coupling of the signal displayed on the screen Normal Polarity Sync triggers always occur on negative going horizontal sync pulses If the video waveform has positive going horizontal sync pulses use the Inverted Polarity selection 2 4 Acquisition system When you acquire a signal
50. t resets display format to YT Trigger Controls Horizontal Position Knob Vector Display Type Scan Display Note When the display Type is set to Vectors the oscilloscope connects the sample points by using digital interpolation Interpolation mode contain linearity interpolation and sin x x interpolation Sin x x interpolation is suitable for real time mode and is most effective at 250ns div or faster time The oscilloscope automatically switches to the most suitable display type based on the timebase setting 2 6 Measurement system There are several ways to take measurements You can use the graticule the cursors or make an automated measurement 25 2 6 1 Graticule Measurement This method allows you to make a quick visual estimate For example you might look at a waveform amplitude and determine that it is a little more than 100 mV You can take simple measurements by counting the major and minor graticule divisions involved and multiplying by the scale factor For example if you counted five major vertical graticule divisions between the minimum and maximum values of a waveform and knew you had a scale factor of 100 mV division then you could easily calculate your peak to peak voltage as follows 5 divisions x 100 mV division 500 mV 2 6 2 Cursor Measurement This method allows you to take measurements by moving the cursors which always appear in pairs and reading their numeric values from the display
51. the storage Recall Recall the storage in the waveform operation MPost 00us SAVEIREC y d y Tupe waveforms Figure 2 29 m SAVE RECALL REFERENCE WAVEFORM The oscilloscopes can store two reference waveforms in nonvolatile memory The oscilloscope can display 2 reference waveforms at a time Reference waveforms are not adjustable but the oscilloscope does display the horizontal and vertical scales at the bottom of the screen more details see Chapter 3 34 Chapter 3 Operating Basics The previous chapter introduced the main functional blocks of the instrument This chapter explains in more detail how to set up the oscilloscope to view signals and to make measurements E Explanation of Display area E Using the Menu System E Using the Default Setup E Using the Auto Setup E Using the Universal knob E Setting up the Vertical System Setting up the Horizontal System Setting up the Trigger System E Using Math and FFT Functions Menu and Control Buttons Connectors 3 1 Display Area MPos 6 00ys HORIZON 7 8 g 101112 Figure 3 1A 1 Acquisition mode La Sampling mode au Peak detect mode 35 B amp K JE Auto WPos 140 0ys REF WAV CHi 1 09U 1 500ps CHI wy All Refa1 00U 250ys RefB1 00U500ys U lt 10Hz 14 15 Figure 3 2B JL Average mode Trigger status Armed The oscilloscope is acquiring pretrigger data All triggers are ignored in this state
52. to use the oscilloscope to capture a single event Set the Probe option attenuation to 10X and set the svvitch to 10X on the probe Trigger set up 1 Press TRIG MENU button to show the Trigger Menu 2 Under this menu set the trigger type to Edge Edge type is rising source is CH1 trigger mode is Single couple is DC 3 Adjust the horizontal time base and vertical scale appropriately 55 4 Turn the LEVEL knob to adjust the trigger level 5 Press the SINGLE button to start capturing Make sure Run Stop button is green When the trigger conditions are met data appears on the display representing the data points that the oscilloscope obtained with one acquisition Pressing the RUN STOP button again rearms the trigger circuit and erases the display 4 4 Analyzing signal details Scenario You have a noisy signal displayed on the oscilloscope and you need to learn more about it You suspect that the signal contains more details than you can now see on the display 4 4 1 Looking at a Noisy Signal The signal appears noisy and you suspect that noise is causing problems in your circuit To better analyze the noise follow these steps 1 Press the ACQUIRE button to see the acquire menu 2 Press the Peak Detect option button 3 If necessary press the DISPLAY button to see the display menu Adjust the contrast for better visibility of the noisy signal Note Peak detect emphas
53. trigger capability with line selectable triggering External trigger Variable persistence display Built in trigger frequency counter Table of Content Chapter 1 Getting Started a ina 6 Ee E E Le 6 1 2 Functional Check ses een dad 6 13 Probe handling ss dt nee seen eist ee Re 8 LIA Probe Sata enter al nn beis 8 1 3 2 Probe Compensation ei i i RE MA lt eee 8 1 3 3 Probe Attenuation Setting ssh nine 9 l A Sclf Calibration edi sin men te een ain tats ere re 10 Chapter 2 Main Control Sections Overview oooooccconccccoonnncnnnnoss 11 2 1 Vertical Systent rime dite tte deed 11 2 2 Horizontal SYM aca 13 MLS EE 15 2 3 1 Signal OUEN da 16 ID Tri SG AP tia 16 SEENEN dE EE dee 19 E E EEN 19 2 4 5 Slope EC LE Veles ee EE A ER 19 2 4 Acquisition system eis a US 20 2S Display System ai ed mt i A RE 23 251 X Y Form t oee ocd rauei ereere ie vecboneve cosets ati iea aa iaaii 25 2 6 ME ASUMEN A OE ATER 25 2 6 1 Graticule Measurement 26 2 6 2 Cursor Measurement rte EE ne en es 26 2 0 3 ET EE 27 DT Utility Sy Stem i ie ax im Em RAR ee 30 DN SYSLEMLSLALUS gie ae Ut de ed erg tee eege 31 2 13 Sell Calibration soil e deta 31 E E 31 2 8 Save Recall sti cd 32 Chapter 3 Operating Basics ir a 36 3 1 Display Arcor te deceo me Loan de ote Le a a Le een te nn 35 3 2 Using the Menu System onei a E E A A E e a E 36 3 3 Using the default setup sancan nanei a R R A 37 34 Using the auto Setup EE 37 3 5 Using the ADJUST mobi RE ne
54. type of waveform and automatically adjust controls to produce a usable display of the input signal Press the Auto button to activate this mode 37 Table 3 1 Auto set the function Menu Option Set Up Comment Auto set the screen and display multiple cycles FL Auto set the screen and display a single cycle Auto set and show the rise time Auto set and show the fall time KI Undo Setup Causes the oscilloscope to recall the previous setup MPosi9001z AUTOSET E GE Freg 29 26 Hz CH 100m0 M259ns CH17 4 99m4 Figure 3 3 When you press the AUTOSET button the oscilloscope identifies the type of waveform and adjusts controls to produce a usable display of the input signal Autoset determines the trigger source based on the following conditions e Ifa signalis applied to both channels the instrument displays the channel with the lowest frequency e If no signals are found the oscilloscope displays Channel 1 Table 3 2 Oscilloscope settings for Auto mode Function Setting Acquire Mode Set to Sampling Acquire Type Equ time Equivalent Sampling Display Format Y T Display Type Set to Dots for a video signal set to Vectors for an FFT spectrum otherwise unchanged Vertical Coupling Set to DC or AC according to the input signal 38 Volts DIV Adjusted VOLTS DIV Coarse adjustability Signa
55. ure changes by 5 C or more To compensate the signal path disconnect any probes or cables from the front panel input connectors Then push the UTILITY button select the Do Self Cal option and follow the directions on the screen 10 Chapter 2 Main Control sections overview The front panel is divided into easy to use functional areas This chapter provides you with a quick overview of the main controls Figure 1 1 Front Panel Controls To use your oscilloscope effectively you need to familiarize yourself with the following control sections Vertical System Horizontal System Trigger System Acquisition System Display System Measurement System Utility Menu o Store Recall Menu 2 1 Vertical System Each channel has a vertical control menu which appears after pressing the CH1 or CH2 button The vertical controls are used to size and position the signals and to turn the waveform on or off Below is a figure of the vertical system controls 11 Figure 2 1 Table 2 1 Vertical Control menu Menu Settings Explanation DC Both AC and DC components of the input signal are passed on to the oscilloscope Copii AC The DC component is blocked only the AC component of the input signal is passed through Signals below 10Hz are attenuated GND The waveform is disconnected from the oscilloscope BW limit On Off Limits the bandwidth to 20 MHz in order to reduce display nose and to fi
56. use 64 Appendix B Default setup source CH1 MEASURE type Average mode Sample Averages 16 ACQUIRE Sample mode Equ time type Vectors DISPLAY Persist off grid type waveform REF source CH1 REFA off type Edge source CH1 slope Rising TRIGGER edge Mode Auto Coupling DC LEVEL 0 00V type Pulse source CH1 TRIGGER pulse when Set Pulse Width 1 00ms Mode Auto Coupling DC Type Video Source CH1 TRIGGER Video Polarity Normal Sync All Lines Standard NTSC 65 Appendix C Sample rate versus time base setting Time base Sample rate S s div Equivalent Real time 2530 Real time 2532 time sampling Single dual channel operation 2 5ns 50G 250M 500M 250M 5ns 50G 250M 500M 250M 10ns 25G 250M 500M 250M 25ns 10G 250M 500M 250M 50ns 5G 250M 500M 250M 0 1us 2 5G 250M 500M 250M 0 25 us 1G 250M 500M 250M Time base div Sample rate S s 0 5 us 200M lus 200M 2 5us 100M Sus SOM 10us 25M 25us 10M 50us 5M 0 1ms 2 5M 0 25ms 1M 0 5ms 500K lms 250K 2 5ms 100K Sms 50k 10ms 25k 25ms 10k 50ms 5k Time base div Sample rate S s Scan Normal amp Single 0 1s 25k 2 5K 0 25s 10k 1k 0 5s 5k 0 5K ls 2 5k 0 25K 2 5s 1k 0 1K 5s 0 5k 50HZ 10s 250Hz 25HZ 25s 100Hz 10HZ 50s 50Hz SHZ
57. ve pulse width larger than pulse width setting Menu Setting Explanation Pulse Select the pulse to trigger the Type wn pulse match the trigger condition CHI CH2 Source EXT EXT S 7 Positive pulse width less than pulse width setting Select how to compare the trigger FPL Positive pulse width larger than pulse width setting pulse relative to the value When L Positive pulse width equal to pulse width setting Sd Ao option t Negative pulse width equal to pulse width setting os 20 0ns 10 0s Adjust the pulse width with the ADJUST knob Auto Select the type of triggering Mode Normal Normal mode is best for most single Pulse Width trigger applications DC I AC Li HF Reject LF Reject Hint Use Pulse VVidth triggering to trigger on aberrant pulses 2 3 3 Coupling Use Coupling to select which component of the signal to pass on to the trigger circuit This parameter only applies to Edge or Pulse trigger mode for Video trigger mode coupling is always set to AC 2 3 4 Position The horizontal position control establishes the time between the trigger position and the screen center You can adjust the HORIZONTAL POSITION control to view waveform data before the occurrence of the trigger after the trigger or any point in between When you change the horizontal position of a waveform you are changing the time between the trigger and the actual center of the display This appear
58. vertical horizontal and trigger controls automatically If you want to optimize the display of the waveform you can manually adjust these controls NOTE The oscilloscope displays relevant automatic measurements in the waveform area of the screen based on the signal type detected 2 Taking Automatic Measurements The oscilloscope can take automatic measurements of most displayed signals To measure signal frequency and peak to peak amplitude follow these steps 1 Measure signal frequency Input the signal to channel 1 e Press the AUTO button e Press the MEASURE button to see the Measure Menu 53 e Press the top option button Measure value 1 Menu appears e Press the Type option button and select Freq e Press the off option button The value below freq is the result of the measurement 2 Measure signal peak to peak amplitude e Press the second option button from the top the Measure value 2 menu appears ePress the Type option button and select Vpp e Press the off option button The value below Vpp is the result of measurement 4 2 Taking Cursor Measurements You can use the cursors to quickly take time and voltage measurements on a waveform 4 2 1 Measuring Ring Frequency To measure the ring frequency at the rising edge of a signal follow these steps 1 Press the CURSORS button to see the Cursor Menu 2 Press the Type option button
59. y Persistence is set ON the refresh rate is slow This is normal 61 Appendix A Specifications All specification apply to a 10X probe setting To verify that the oscilloscope meets specifications the oscilloscope must first meet the following conditions The oscilloscope must have been operating continuously for twenty minutes within the specified operating temperature You must perform the Do Self Cal operation accessible through the Utility menu if the operating temperature changes by more than 5 C The oscilloscope must be within the factory calibration interval D Specifications Inputs Input Coupling AC DC GND Input Impedance 1MQ 13Pf Probe Attenuation IX 10X Supported probe attenuation factor 1X 10X 100X 1000X Max Voltage between signal and reference BNC connector 300 Vrms CAT I Vertical System 2532 2530 Vertical Range 2mV 5V div 1 2 5 sequence Position range 2mV 100mV range 2V 200mV SV range 40V Vertical Resolution 8 bit Channels 2 Gain accuracy 3 0 Analog Bandwidth 40 MHz 2532 25MHz 2530 Single shot Bandwidth Full bandwidth Lower frequency limit AC 3dB SS Hz at input BNC Rise time lt 8 8ns lt 14 ns Band width limit Model 2532 only 20 MHz 3dB Horizontal System 2532 2530 Timebase accuracy 0 01 Horizontal Scan Range 10 n
60. z m Probe component Voltage probe compensation output and ground Use to electrically match the probe to the oscilloscope input circuit m CHI CH2 Input connectors for waveform display m EXT TRIG Input connector for an external trigger source Use the Trigger Menu to select the Ext or Ext 5 trigger source Note If you connect a voltage source to a ground terminal you may damage the oscilloscope or the circuit under test To avoid this do not connect a voltage source to any ground terminals 52 Chapter 4 Application Examples This section presents a series of application examples These basic examples highlight the features of the oscilloscope and provide you with ideas how you can solve your testing problems using the 2530 2532 oscilloscope Taking simple measurements Taking cursor measurements Capturing a single shot signal Analyzing signal details Triggering on a video signal Application of X Y function 9 2 Analyzing a differential communication signal using math functions 4 1 Taking Simple Measurements Example Observe a unknown signal display the signal quickly and measure the frequency and peak to peak amplitude 1 Using Auto set To quickly display a signal follow these steps 1 Press the CH 1 button set the Probe option attenuation to 10X and set the switch to 10X on the probe 2 Connect the channel 1 probe to the signal 3 Press the AUTO button The oscilloscope sets

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