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6000L Series Oscilloscopes Service Guide

Troubleshooting

Solving General Problems with the Oscilloscope

This section describes how to solve general problems that you may encounter

while using the Keysight 6000L Series Oscilloscopes to make measurements.

After troubleshooting the oscilloscope, if you need to replace parts, refer to the

“Replaceable Parts” chapter.

On 6000L Series oscilloscopes, connect an XGA display to the display port on the

rear panel before you begin troubleshooting. Then connect the oscilloscope to the

network, establish communication, and use the Remote Front Panel feature

described in the

6000L Series Oscilloscopes User’s Guide

to control the

oscilloscope. If you do not have the user’s guide, you can download it from

www.keysight.com/find/6000.

If there is no display

✔

Check that the power cord is firmly seated in the oscilloscope power

receptacle.

✔

Check that the power source is live.

✔

Check that the front-panel power switch is on.

✔

If there is still no display, go to the troubleshooting procedures in this chapter.

If there is no trace display

✔

Check that the

INTENSITY

knob on the front panel is adjusted correctly.

✔

Recall the default setup by pressing

Save/Recall

then

Default Setup

. This will

ensure that the trigger mode is Auto.

✔

Check that the probe clips are securely connected to points in the circuit under

test, and that the ground is connected.

✔

Check that the circuit under test is powered on.

✔

Press the

AutoScale

key.

✔

Obtain service from Keysight Technologies, if necessary.

Содержание InfiniVision 6000L Series

Страница 1: ...Keysight InfiniVision 6000L Series Oscilloscopes Service Guide...

Страница 2: ...by which the software is customarily provided to the public Accordingly Keysight provides the Software to U S government customers under its standard commercial license which is embodied in its End U...

Страница 3: ...ting This chapter explains how to adjust the oscilloscope for optimum operating performance 4 Troubleshooting This chapter begins with suggestions for solving general problems that you may encounter w...

Страница 4: ...Web control feature described in the 6000L Series Oscilloscopes User s Guide to complete the instructions If you do not have the 6000L Series Oscilloscopes User s Guide you may obtain a printable elec...

Страница 5: ...urement Category Definitions 15 6000L Series Maximum Input Voltages 16 6000L Environmental Conditions 17 Specifications 18 Contact Us 18 2 Testing Performance Overview 20 Conventions 20 List of Test E...

Страница 6: ...46 3 Calibrating and Adjusting User Calibration 51 To perform User Cal 51 User Cal Status 53 4 Troubleshooting Solving General Problems with the Oscilloscope 56 Troubleshooting the Oscilloscope 59 Equ...

Страница 7: ...o remove the AC power input assembly 83 To remove the power shaft 85 6 Replaceable Parts Ordering Replaceable Parts 88 Listed Parts 88 Unlisted Parts 88 Direct Mail Order System 88 Exchange Assemblies...

Страница 8: ...8 6000L Series Oscilloscopes Service Guide Contents...

Страница 9: ...8 User Calibration cable for 4 channel oscilloscope 52 Figure 9 6000L Series LED indicators 61 Figure 10 Example pulses 63 Figure 11 System Board Test Points 66 Figure 12 Default setup screen 70 Figur...

Страница 10: ...10 6000L Series Oscilloscopes Service Guide Figures...

Страница 11: ...ent Required to Verify Voltage Measurement Accuracy 29 Table 7 Settings Used to Verify Voltage Measurement Accuracy 30 Table 8 Equipment Required to Verify Bandwidth 33 Table 9 Equipment Required to V...

Страница 12: ...12 6000L Series Oscilloscopes Service Guide Tables...

Страница 13: ...ntal Conditions 17 Specifications 18 Contact Us 18 This chapter contains a partial list of characteristics and specifications for the Keysight InfiniiVision 6000L Series Oscilloscopes For a full list...

Страница 14: ...14 6000L Series Oscilloscopes Service Guide 1 Characteristics and Specifications Power Requirements 6000L Models Line voltage frequency and power Line 100 240 Vac 50 60 Hz 80 W max...

Страница 15: ...ed on circuits directly connected to the low voltage installation Examples are measurements on household appliances portable tools and similar equipment Measurement category III is for measurements pe...

Страница 16: ...oad will disconnect if greater than 5 Vrms is detected However the inputs could still be damaged depending on the time constant of the signal The 50 input protection functions only when the oscillosco...

Страница 17: ...cted equipment Pollution Degree The InfiniiVision 6000L Series oscilloscopes may be operated in environments of Pollution Degree 2 or Pollution Degree 1 Pollution Degree Definitions Pollution Degree 1...

Страница 18: ...ete up to date specifications and characteristics To download a copy of the data sheet please visit www keysight com find 6000 Or go to the Keysight home page at www keysight com and search for 6000L...

Страница 19: ...digital channel threshold accuracy MSO models only 25 To verify voltage measurement accuracy 29 To verify bandwidth 33 To verify time scale accuracy 37 To verify horizontal delta t accuracy 39 To ver...

Страница 20: ...t with minimum electrical distortion Let the Equipment Warm Up Before Testing For accurate test results let the test equipment and the oscilloscope warm up 30 minutes before testing Verifying Test Res...

Страница 21: ...d 1 GHz sine waves Keysight N5181A or E4400B or 8648A Power Meter Sensor 1 GHz 3 accuracy Keysight E4418B 8482A Oscilloscope Calibrator 25 MHz 500 MHz sine wave 5 ppm Fluke 5820A BNC banana cable Keys...

Страница 22: ...On one side of the Berg strip solder a jumper wire to all of the pins shown in Figure 1 on page 23 3 On the other side of the Berg strip solder another jumper wire to all of the pins 4 Solder the cent...

Страница 23: ...ance 2 6000L Series Oscilloscopes Service Guide 23 Figure 1 Constructing the 8 by 2 Connector Jumper 2 Signal Lead from scope s MSO cable 8 x 2 Berg Strip BNC Panel Mount Connector Ground Lead from sc...

Страница 24: ...connect digital channels D0 D1 D2 and D3 to the Probe Comp signal on the center of the front panel 3 Press the AutoScale key If four square waves appear the acquisition system is functioning correctly...

Страница 25: ...same instructions to test digital channels D15 D8 Verifying Test Results After each threshold test record the voltage reading in the Performance Test Record on page 46 To verify whether a test passes...

Страница 26: ...the multimeter to monitor the oscilloscope calibrator DC output voltage 3 Use the 8 by 2 test connector and the BNC cable assembly to connect digital channels D0 D7 to one side of the BNC Tee Then co...

Страница 27: ...Then use the multimeter to verify the voltage Digital channel activity indicators are displayed on the status line at the top of the oscilloscope display The activity indicators for D7 D0 should show...

Страница 28: ...oscilloscope calibrator voltage levels for each of the threshold settings shown in Table 5 9 Use the 8 by 2 test connector to connect digital channels D15 D8 to the output of the oscilloscope calibra...

Страница 29: ...ed as 16 mV on the 1 mV div range Full scale on all other ranges is defined as 8 divisions times the V div setting 1 LSB 0 4 of full scale 1 Set up the oscilloscope a Adjust the channel 1 position kno...

Страница 30: ...iv Setting Oscilloscope Calibrator Setting Test Limits 5 V Div 35 V 34 04 V to 35 96 V 2 V Div 14 V 13 616 V to 14 384 V 1 V Div 7 V 6 808 V to 7 192 V 500 mV Div 3 5 V 3 404 V to 3 596 V 200 mV Div 1...

Страница 31: ...settle 5 Press the Y2 softkey then position the Y2 cursor to the center of the voltage trace using the Entry knob The Y value on the lower line of the display should be within the test limits of Table...

Страница 32: ...remaining channels to be tested Figure 4 Using a Blocking Capacitor to Reduce Noise Use a Blocking Capacitor to Reduce Noise On the more sensitive ranges such as 2 mV div and 5 mV div noise may be a...

Страница 33: ...s 3 dB dc to 500 MHz 100 MHz Models Test limits at 1 mV div to 5 V div All channels 3 dB dc to 100 MHz Table 8 Equipment Required to Verify Bandwidth Equipment Critical Specifications Recommended Mode...

Страница 34: ...1 GHz oscilloscope models use an N to BNC adapter to connect the other splitter output to the channel 1 input d For 100 MHz oscilloscopes use an N to BNC adapter and 50 feedthrough termination to con...

Страница 35: ...illoscope screen should be about five cycles at six divisions amplitude 5 Set up the Amplitude measurement a Press the Quick Meas key b Press the Clear Meas softkey c Press the Select softkey and use...

Страница 36: ...e using the expression Example If Pmeas1_MHz 892 uW Std Dev n 1MHz 210 4 mV Pmeas max_freq 687 uW Std Dev n max freq 161 6 mV Then after converting the values from the power meter to Vrms 15 The resul...

Страница 37: ...erifies the accuracy of the time scale In this test you will measure the absolute error of the timebase oscillator and compare the results to the specification 1 Set up the signal generator a Set the...

Страница 38: ...measurement a Set oscilloscope horizontal sweep speed control to 1 ms div b Set horizontal position control to 1 ms rotate control CCW c Set the oscilloscope horizontal sweep speed control to 5 ns div...

Страница 39: ...alibrator output to the oscilloscope channel 1 input 2 Set up the signal source a Select Marker on the oscilloscope calibrator b Set the calibrator for 100 s markers period 100 s 3 Set up the oscillos...

Страница 40: ...re the following If the measurements are not within the test limits go to the Troubleshooting chapter Then return here Period 100 ns The test limits are 99 8 ns to 100 2 ns 7 Change the time base and...

Страница 41: ...tional because it is a characteristic not a specification Test limits for Internal trigger 10 mV div greater of 1 div or 5 mVpp 10 mV div 0 6 div External trigger 1 GHz and 500 MHz models DSO6104L 605...

Страница 42: ...odels connect the signal generator output to the oscilloscope channel 1 input b For 100 MHz models use a 50 feedthrough termination to connect the signal generator output to the oscilloscope channel 1...

Страница 43: ...e try adjusting the trigger level If adjusting the trigger level makes the trigger stable the test still passes If adjusting the trigger does not help see the Troubleshooting chapter Then return here...

Страница 44: ...then press the Default Setup softkey 3 Change the signal generator output frequency as follows For 500 MHz and 1 GHz models set the signal generator output frequency to 500 MHz For 100 MHz models set...

Страница 45: ...wer meter of 625 W 500mVpp 176 78mV rms Power Vin2 50 176 78 mV2 50 625 W 6 Press the Trigger Edge key then press the Source softkey to set the trigger source to External 7 Check for stable triggering...

Страница 46: ...________ ________ ________ 200 mV Div 1 4 V 1 3616 V to 1 4384 V ________ ________ ________ ________ 100 mV Div 700 mV 680 8 mV to 719 2 mV ________ ________ ________ ________ 50 mV Div 350 mV 340 4 m...

Страница 47: ...nnel 1 Channel 2 Channel 3 Channel 4 Internal trigger 1 division at 25 MHz ________ ________ ________ ________ 1 GHz models 0 6 division at 1 GHz ________ ________ ________ _______ 500 MHz models 0 6...

Страница 48: ...48 6000L Series Oscilloscopes Service Guide 2 Testing Performance...

Страница 49: ...ing Before you start the adjustments let the oscilloscope and test equipment warm up for at least 30 minutes Read All Cautions and Warnings Read the following cautions and warning before making adjust...

Страница 50: ...removed which leads to higher than normal operating temperatures Have the fan blow air across the system board where the heat sinks are located If the cover is removed but the main shield remains ins...

Страница 51: ...The routine uses internally generated signals to optimize circuits that affect channel sensitivity offset and trigger parameters Disconnect all inputs and allow the oscilloscope to warm up before perf...

Страница 52: ...hown below Figure 8 User Calibration cable for 4 channel oscilloscope 3 Connect a BNC cable 40 inches maximum from the TRIG OUT connector on the rear panel to the BNC barrel connector 4 Press the Util...

Страница 53: ...tkey displays the following summary results of the previous User Cal and the status of probe calibrations for probes that can be calibrated Note that AutoProbes do not need to be calibrated but Infini...

Страница 54: ...54 6000L Series Oscilloscopes Service Guide 3 Calibrating and Adjusting...

Страница 55: ...display If the trace display is unusual or unexpected If you cannot see a channel If you cannot get any response from the oscilloscope Procedures for troubleshooting the oscilloscope follow the proble...

Страница 56: ...uide to control the oscilloscope If you do not have the user s guide you can download it from www keysight com find 6000 If there is no display Check that the power cord is firmly seated in the oscill...

Страница 57: ...test Check that the trigger setup is correct A correct trigger setup is the most important factor in helping you capture the data you desire See the User s Guide for information about triggering Chec...

Страница 58: ...h on the analog channel by selecting Analog from the menu bar of the Remote Front Panel 6000L Series models b Switch on the digital channels by selecting Digital from the menu bar 6000L Series models...

Страница 59: ...procedures with the power cord removed from the oscilloscope Read the safety notice at the back of this book before proceeding WARNING HAZARDOUS VOLTAGES EXIST HIGH VOLTAGE IS PRESENT ON DSO6000L SER...

Страница 60: ...Keysight DSO6102A MSO6102A DSO6102A or MSO6104A CAUTION USE AN EXTERNAL FAN TO AVOID OVERHEATING COMPONENTS When you remove the oscilloscope cover and main shield use an external fan to provide conti...

Страница 61: ...cted the LAN indicator will illuminate red It will turn green when the LAN is connected as it is configured The amount of time it takes the indicator to turn green depends on the network and the oscil...

Страница 62: ...isplay The oscilloscope is now configured to its default settings 2 Connect an oscilloscope probe from channel 1 to the Probe Comp signal terminal on the front panel 3 Connect the probe s ground lead...

Страница 63: ...edure To verify basic oscilloscope operation on page 62 2 Use a nonmetallic tool to adjust the trimmer capacitor on the probe for the flattest pulse possible The trimmer capacitor is located on the pr...

Страница 64: ...ting Troubleshooting Flowchart The following flowchart describes how to troubleshoot 6000L Series models Start Test Power Supply Okay Test System Board Okay Test Display Okay End Replace Power Supply...

Страница 65: ...es oscilloscopes are at a high potential This presents an electric shock hazard Protect yourself from electric shock by keeping this area covered or by not coming in contact with the heat sinks when t...

Страница 66: ...ord b Remove the fan See To remove the fan on page 81 c Disconnect plug J3 from the power supply and from the system board d Perform a continuity check on the DC cable item W1 on page 93 If the cable...

Страница 67: ...66 to locate the test points Table 13 System Board Test Points 4 If the voltage at test point L3301 and or L3302 is not within the specified range replace the system board 5 If all cables are properl...

Страница 68: ...ector c If the fan voltage is approximately 8 5 Vdc at room temperature replace the fan If the fan voltage is not approximately 8 5 Vdc replace the system board The proper voltage range depending on t...

Страница 69: ...ey 2 Press the Default Setup softkey This returns the oscilloscope to its factory default settings and places the oscilloscope in a known operating condition The major default settings are Horizontal...

Страница 70: ...70 6000L Series Oscilloscopes Service Guide 4 Troubleshooting Figure 12 Default setup screen 3 If your screen looks substantially different replace the system board...

Страница 71: ...oved an assembly to install the replacement assembly follow the instructions in reverse order The parts shown in the following figures are representative and may look different than what you have in y...

Страница 72: ...CK Hazardous voltages exist on the LCD assembly and power supply To avoid electrical shock 1 Disconnect the power cord from the oscilloscope 2 Wait at least three minutes for the capacitors in the osc...

Страница 73: ...1 Turn off the oscilloscope and disconnect the power cable 2 Turn the oscilloscope so the bottom is facing up 3 Using a T10 screwdriver remove 5 screws from the rear and sides of the cabinet 4 Slide t...

Страница 74: ...f Using a twisting motion on the screwdriver rather than prying prevents marking or damaging the front panel Figure 14 Removing the intensity knob 3 Disconnect the front panel ribbon cable from the sy...

Страница 75: ...the front panel off of the oscilloscope 7 Lift the front panel PC board to remove it from the front panel 8 Reverse this procedure to replace the front panel Front Panel Ribbon Cable Retainer Tab Sys...

Страница 76: ...in step 2 on page 74 3 Disconnect the front panel ribbon cable from the system board by pressing the release tabs 4 Disconnect the fan cable 5 Remove the 3 hex nuts and washers from the rear BNC conne...

Страница 77: ...assis b Gently pull the board out until you can disconnect the power supply cable c Continue to remove the board from the chassis CAUTION To avoid tearing the thermal pads on a 500 MHz oscilloscope wh...

Страница 78: ...78 6000L Series Oscilloscopes Service Guide 5 Replacing 6000L Assemblies 9 Reverse this procedure to reinstall the system board...

Страница 79: ...cable and AC cables from the power supply using a needle nose pliers if necessary 3 Press the release latch to disconnect the power input board cable from the power input board Figure 18 Removing the...

Страница 80: ...through the hole in the divider gently pry the power supply board up enough to snap the power supply board off the rear snap fastener 6 Using a twisting motion with a flat blade screwdriver gently sna...

Страница 81: ...age 73 To remove the system board on page 76 To remove the power supply on page 79 Though the fan can be removed without performing all of the above it is difficult to reinstall it 2 Slide the fan and...

Страница 82: ...e holes in the top and bottom of the fan c Align the holes in the bottom of the flexible fan mount over the studs on the chassis as you slide the fan over the divider in the chassis d Ensure that the...

Страница 83: ...cle ground wire to the chassis 3 Using a TORX T10 screwdriver remove the screw securing the input board to the chassis 4 Lift and rotate the grooved input receptacle just enough to free it from the op...

Страница 84: ...vice Guide 5 Replacing 6000L Assemblies Figure 21 Removing the AC power input board 7 Reverse this procedure to install the AC power input board Grooved Receptacle Power Shaft Posts 2 Keyholes 2 T10 S...

Страница 85: ...wer supply on page 79 To remove the fan on page 81 2 Use a flat blade screwdriver to gently spread the latch while pushing the power shaft forward Figure 22 Removing the power shaft 3 Lift and remove...

Страница 86: ...86 6000L Series Oscilloscopes Service Guide 5 Replacing 6000L Assemblies...

Страница 87: ...le Parts for 6000L Series Oscilloscopes 90 This chapter describes how to order replaceable assemblies and parts for the Keysight 6000L Series Oscilloscopes Diagrams and parts lists are included for as...

Страница 88: ...rder System Within the USA Keysight Technologies can supply parts through a direct mail order system There are several advantages to this system Direct ordering and shipping from the Keysight Technolo...

Страница 89: ...that of a new part The exchange parts have a part number in the form XXXXX 695XX After receiving the repaired exchange part from Keysight Technologies a United States customer has 30 days to return t...

Страница 90: ...e Exploded Views The following exploded views provide a graphical representation of the oscilloscope at the time this manual was released Not all parts are shown Your parts may be slightly different t...

Страница 91: ...Replaceable Parts 6 6000L Series Oscilloscopes Service Guide 91 Figure 23 6000L Series Oscilloscope Exploded View MP2 W1 MP5 A3 MP4 A1 A4 MP11 W2 MP12 A2 MP6 MP7 M82 MP10 MP9 MP2 MP3...

Страница 92: ...rt Number Qty Description A1 D6104 66422 1 AC line filter power switch PC board assembly A2 D6104 00101 1 Deck assembly A3 D6104 68501 1 Fan assembly A4 D6104 60001 1 Rackmount kit MP1 D6104 66421 1 A...

Страница 93: ...1 GHz MP11 54684 66506 1 PC board assembly 4 Ch 1 GHz MP11 54634 66501 1 PC board assembly 4 Ch 100 MHz MP11 54674 66506 1 PC board assembly 4 Ch 500 MHz MP12 0950 4853 1 Power supply W1 D6104 61607 1...

Страница 94: ...94 6000L Series Oscilloscopes Service Guide 6 Replaceable Parts...

Страница 95: ...Safety Requirements for Measuring Apparatus and has been supplied in a safe condition This is a Safety Class I instrument provided with terminal for protective earthing Before applying power verify t...

Страница 96: ...voltage reduction or mains isolation the common terminal must be connected to the earth terminal of the power source Whenever it is likely that the ground protection is impaired you must make the inst...

Страница 97: ...nt If the instrument requires cleaning 1 Remove power from the instrument 2 Clean the external surfaces of the instrument with a soft cloth dampened with a mixture of mild detergent and water 3 Make s...

Страница 98: ...mbol the product is marked with this symbol when it is necessary for you to refer to the instruction manual in order to protect against damage to the product and preserve safe conditions Hazardous vol...

Страница 99: ...val 81 front panel 4 exploded view 91 removal 74 fuse 65 H horizontal accuracy verification 39 I internal self tests 68 K Keysight contact information 18 L LED startup sequence 60 M making test connec...

Страница 100: ...hreshold accuracy digital channel 25 test diagram 26 trace display problem solving 56 57 transient withstand capability 16 trigger sensitivity 41 sensitivity external 43 sensitivity internal 42 troubl...

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