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Agilent Technologies 1670G Series, Руководство по обслуживанию

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Theory of Operation

This chapter tells the theory of operation for the logic analyzer and describes the
self-tests.  The information in this chapter will help you understand how the logic
analyzer operates and what the self-tests are testing.  This information is not
intended for component-level repair. 

8–2

Содержание 1670G Series

Страница 1: ...1670 97023 November 2003 For Safety information Warranties and Regulatory information see the pages at the end of the book Copyright Agilent Technologies 1987 2003 All Rights Reserved Agilent Technolo...

Страница 2: ...nels in the Agilent 1672G 32 data channels and 2 clock data channels in the Agilent 1673G 3 5 inch flexible disk drive 2 GB hard disk drive GPIB RS 232 C Centronics and LAN interfaces Thinlan and Ethe...

Страница 3: ...ime between markers Lightweight mini probes Service Strategy The service strategy for this instrument is the replacement of defective assemblies This service guide contains information for finding a d...

Страница 4: ...for use Chapter 3 gives instructions on how to test the performance of the logic analyzer Chapter 4 contains calibration instructions for the logic analyzer Chapter 5 contains self tests and flowchart...

Страница 5: ...alyzer 2 4 3 Testing Performance To perform the self tests 3 3 To make the test connectors logic analyzer 3 7 To test the threshold accuracy logic analyzer 3 9 Set up the equipment 3 9 Set up the logi...

Страница 6: ...3 59 Set up the logic analyzer 3 60 Connect the logic analyzer 3 61 Acquire the data 3 62 Perform an operational accuracy calibration 3 62 To test the voltage measurement accuracy oscilloscope 3 63 Se...

Страница 7: ...the logic analyzer 4 7 Verify the DC CAL OUTPUT port 4 8 Set up the logic analyzer 4 9 Verify the AC CAL OUTPUT port 4 9 5 Troubleshooting To use the flowcharts 5 2 To check the power up tests 5 11 To...

Страница 8: ...To remove and replace the fan 6 18 To remove and replace the pattern generator cables pattern generator option only 6 18 To remove and replace the GPIB and RS 232 C cables 6 19 To remove and replace...

Страница 9: ...ions pattern generator 1 4 Characteristics logic analyzer 1 5 Characteristics oscilloscope 1 5 Characteristics pattern generator 1 6 Recommended Test Equipment logic analyzer 1 9 Recommended Test Equi...

Страница 10: ...ables 01660 61605 Note 2 Grabbers 20 per pack 5090 4356 Note 1 Probe ground 5 per pack 5959 9334 Note 1 Double Probe Adapter 16542 61607 1 PS2 Mouse C3751 60201 1 Note 1 Quantities 8 1670G 6 1671G 4 1...

Страница 11: ...old setting Setup Hold Time Single Clock Single Edge 3 0 0 0 ns through 0 5 3 5 ns adjustable in 500 ps increments Single Clock Multiple Edges 3 5 0 0 ns through 0 5 4 0 ns adjustable in 500 ps increm...

Страница 12: ...1 Specifications valid within 10 C of auto calibration temperature excluding bandwidth see note 1 for bandwidth specification 1 Upper bandwidth reduces by 2 5 MHz for every degree C above 35 C 2 Spec...

Страница 13: ...scope The Agilent 1670G Logic Analyzers with an oscilloscope also include the following characteristics Maximum Sample Rate 2 Gigasample per second Number of Channels 2 Rise Time 1 700 ps ADC 8 bit re...

Страница 14: ...lock outputs Synchronized to output data delay of 11 ns in 9 steps clock pod Clock input DC to 200 MHz clock pod Internal clock period Programmable from 5 ns to 250 s in a 1 2 2 5 4 5 8 sequence Exter...

Страница 15: ...0 C to 40 C 50 F to 104 F Humidity Instrument probe lead sets and cables up to 80 relative humidity at 40 C 122 F Altitude To 3067 m 10 000 ft Vibration Operating Random vibration 5 to 500 Hz 10 minut...

Страница 16: ...ISM Group1 Class A equipment IEC 555 2 and IEC 555 3 Immunity EN50082 1 Code1 Notes2 IEC 801 2 ESD 4kV CD 8kV AD 1 IEC 801 3 Rad 3V m 1 IEC 801 4 EFT 1kV 1 1 Performance Codes 1 PASS Normal operation...

Страница 17: ...Tee BNC m f f 1250 0781 P Cable BNC m m 48 inch 8120 1840 P T SMA Coax Cable Qty 3 18 GHz bandwidth 8120 4948 P Adapter Qty 4 SMA m BNC f 1250 1200 P T Adapter SMA f BNC m 1250 2015 P Coupler Qty 4 B...

Страница 18: ...measurement better than 0 25 accuracy 3458A P Power Meter Sensor 1 250 MHz 3 accuracy 436 8482A P Power Splitter Outputs differ by 0 15 dB 11667B P Blocking Capacitor BNC m f 0 18 F 200 V 10240B P BN...

Страница 19: ...quipment Critical Specifications Recommended Model Part Use Oscilloscope 500 MHz Bandwidth 54820A T Probe 500 MHz Bandwidth 1160A T Output Data Pod no substitute 10460A series T T Troubleshooting Gene...

Страница 20: ...1 12...

Страница 21: ...2 To inspect the logic analyzer 2 2 To apply power 2 3 To operate the user interface 2 3 To clean the logic analyzer 2 3 To test the logic analyzer 2 4 Preparing for Use...

Страница 22: ...on Storage Store or ship the logic analyzer in environments within the following limits Temperature 40 C to 75 C Humidity Up to 90 at 65 C Altitude Up to 15 300 meters 50 000 feet Protect the logic an...

Страница 23: ...ption numbers of available power cables and plug configurations 3 Turn on the instrument power switch located on the front panel To operate the user interface To select a field on the logic analyzer s...

Страница 24: ...the beginning of chapter 3 Testing Performance If you require a test to initially accept the operation perform the self tests in chapter 3 If the logic analyzer does not operate correctly go to the b...

Страница 25: ...41 To test the time interval accuracy logic analyzer 3 53 To test the CAL OUTPUT ports oscilloscope 3 59 To test the input resistance oscilloscope 3 63 To test the voltage measurement accuracy oscill...

Страница 26: ...riate pods showing on the screen With the oscilloscope option ensure that the operational accuracy calibration has been done before doing the performance verification tests see chapter 4 The performan...

Страница 27: ...ere is a pattern generator test These procedures assume the files on the PV disk have been copied to the SYSTEM subdirectory on the hard disk drive If they have not already been copied insert the PV d...

Страница 28: ...play Test remain UNTESTED 7 Select the Front Panel Test A screen duplicating the front panel appears on the screen a Press each key on the front panel The corresponding key on the screen will change f...

Страница 29: ...s at one time by selecting All Tests To see more details about each test when troubleshooting failures you can run each test individually This example shows how to run all tests at once When the tests...

Страница 30: ...ests You can run all tests at one time except for the Data Input Inspection by running All Tests To see more details about each test when troubleshooting failures you can run each test individually 15...

Страница 31: ...of Berg strip a Solder a jumper wire to all pins on one side of the Berg strip b Solder a jumper wire to all pins on the other side of the Berg strip c Solder two resistors to the Berg strip one at e...

Страница 32: ...e Berg strip b Solder a jumper wire to all pins on the other side of the Berg strip c Solder the center of the BNC connector to the center pin of one row on the Berg strip d Solder the ground tab of t...

Страница 33: ...nd of this chapter Equipment Required Equipment Critical Specifications Recommended Model Part Digital Multimeter 0 1 mV resolution 0 005 accuracy 3458A Function Generator Accuracy 5 10 6 frequency DC...

Страница 34: ...ECL in the pop up menu c Move the cursor over the Pod A1 channel selection field Press the Clear Entry button until all channels are assigned all then press Done d Move the cursor over the Data on Cl...

Страница 35: ...cursor to the pod channel selection field then press Select In the pop up menu select Delete All then select Continue c Again press Select At the pop up menu select Insert then select Bus1 then selec...

Страница 36: ...nnect the data and clock channels of pod 1 to one side of the BNC Tee 2 Using a BNC banana cable connect the voltmeter to the other side of the BNC Tee 3 Connect the BNC Tee to the Main Signal output...

Страница 37: ...d to the right of Pod A1 then select ECL in the pop up menu 2 Test the high to low transition a On the DC power source enter 1 438 V b On the logic analyzer press Run The display should show all chann...

Страница 38: ...enter 1 162 V b On the logic analyzer press Run The display should show all channels at a logic 1 4 Record a PASS FAIL in the performance test record for Threshold Accuracy Pod 1 ECL Testing Performan...

Страница 39: ...ower source enter 0 099 V b On the logic analyzer press Run The display should show all channels at a logic 0 3 Test the low to high transition a On the DC source enter 0 099 V b On the logic analyzer...

Страница 40: ...ss the Format key b Move the cursor over the channel assignment field for the pod tested Press Clear Entry until all channels show unassigned all c Move the cursor over the Data on Clocks channel assi...

Страница 41: ...003 Digitizing Oscilloscope 6 GHz bandwidth 58 ps rise time 54750A w 54751A Adapter SMA m BNC f 1250 1200 SMA Coax Cable Qty 3 18 GHz bandwidth 8120 4948 Coupler BNC m m 1250 0216 BNC Test Connector...

Страница 42: ...V div Offset 1 300 V Alternate Scale Attenuation 20 00 1 Scale 200 mV div Offset 1 300 V Thresholds user defined Units Volts Upper 980 mV Middle 1 30 V Lower 1 62 V Set up the logic analyzer 1 Set up...

Страница 43: ...nu Select Done to exit the menu c Select Acquisition Control If the Acquisition Control is Manual use the cursor keys to move the cursor to the Acquisition Mode field Press the Select key to toggle th...

Страница 44: ...er Output Connect the Agilent 1670G or Agilent 1671G Logic Analyzer to the Pulse Generator Testing Combinations Connect to 8133A Channel 2 Output Connect to 8133A Channel 2 Output Connect to 8133A Cha...

Страница 45: ...te the data channels that are connected according to one of the previous tables a Press the Format key b Select the field showing the channel assignments for one of the pods being tested then press th...

Страница 46: ...l Bus1 Type the following for your logic analyzer then press the Select key Agilent 1670G AA Agilent 1672G AA Agilent 1671G 2A Agilent 1673G 0A 5 5 Enable the pulse generator channel 1 channel 2 and t...

Страница 47: ...Timebase menu increase Position 6 666 ns If the period is not less than 6 666 ns decrease the pulse generator Period in 10 ps increments until one of the two periods measured is less than 6 666 ns 2...

Страница 48: ...e setup hold combinations 2 Disable the pulse generator channel 1 COMP with the LED off 3 Using the Delay mode of the pulse generator channel 1 position the pulses according to the setup time of the s...

Страница 49: ...re the period from falling edge to falling edge which is not a valid measurement 4 Select the clock to be tested a In the Master Clock menu select the clock field to be tested then select the clock ed...

Страница 50: ...Difference Listing 6 Press the blue shift key then press the Run key If the analyzer obtains two to four acquisitions without the Stop Condition Satisfied message appearing then the test passes Press...

Страница 51: ...ted then select the clock edge as indicated in the table The first time through this test use the top clock and edge Clocks J K L M b Connect the clock to be tested to the pulse generator channel 1 ou...

Страница 52: ...13 for the next setup hold combination listed in step 1 on page 3 24 until all listed setup hold combinations have been tested When aligning the data and clock waveforms using the oscilloscope align...

Страница 53: ...003 Digitizing Oscilloscope 6 GHz bandwidth 58 ps rise time 54750A w 54751A Adapter SMA m BNC f 1250 1200 SMA Coax Cable Qty 3 18 GHz bandwidth 8120 4948 Coupler BNC m m 1250 0216 BNC Test Connector 6...

Страница 54: ...0 1 Scale 200 mV div Offset 1 300 V Alternate Scale Attenuation 20 00 1 Scale 200 mV div Offset 1 300 V Thresholds user defined Units Volts Upper 980 mV Middle 1 30 V Lower 1 62 V Set up the logic ana...

Страница 55: ...e pop up menu Select Done to exit the menu c Select Acquisition Control If the Acquisition Control is Manual use the cursor keys to move the cursor to the Acquisition Mode field Press the Select key t...

Страница 56: ...or Agilent 1671G Logic Analyzer to the Pulse Generator Testing Combinations Connect to 8133A Channel 2 Output Connect to 8133A Channel 2 Output Connect to 8133A Channel 1 Output 1 Pod 1 channel 3 Pod...

Страница 57: ...only 3 Activate the data channels that are connected according to one of the previous tables a Press the Format key b Select the field showing the channel assignments for one of the pods being tested...

Страница 58: ...under the label Bus1 Type the following for your logic analyzer then press Select Agilent 1670G AA Agilent 1672G AA Agilent 1671G 2A Agilent 1673G A 5 Enable the pulse generator channel 1 channel 2 a...

Страница 59: ...imebase menu increase Position 6 666 ns If the period is not less than 6 666 ns decrease the pulse generator Period in 10 ps increments until one of the two periods measured is less than 6 666 ns 2 Ch...

Страница 60: ...ns d Select Done to exit the setup hold combinations 2 Disable the pulse generator channel 1 COMP with the LED off 3 Using the Delay mode of the pulse generator channel 1 position the pulses according...

Страница 61: ...lue The settings provided in this procedure measure the period from falling edge to falling edge which is not a valid measurement 4 Select the clocks to be tested a Select the clock field to be tested...

Страница 62: ...elect Execute d Move the cursor to Specify Stop Measurement and press the Select key Press Select again to turn on Compare At the pop up menu select Compare Move the cursor to the Equal field and pres...

Страница 63: ...1 Delay until the pulses are aligned according the the setup time of the setup hold combination selected 0 0 ps or 100 ps Disregard the oscilloscope Period 2 value The settings provided in this proced...

Страница 64: ...ination a In the logic analyzer Format menu select Master Clock b Turn off and disconnect the clocks just tested c Repeat steps 1 through 12 for the next setup hold combination listed in step 1 on pag...

Страница 65: ...ulse Generator 150 MHz 3 0 ns pulse width 600 ps rise time 8133A option 003 Digitizing Oscilloscope 6 GHz bandwidth 58 ps rise time 54750A w 54751A Adapter SMA m BNC f 1250 1200 SMA Coax Cable Qty 3 1...

Страница 66: ...200 mV div Offset 1 300 V Alternate Scale Attenuation 20 00 1 Scale 200 mV div Offset 1 300 V Thresholds user defined Units Volts Upper 980 mV Middle 1 30 V Lower 1 62 V Set up the logic analyzer Do t...

Страница 67: ...then select Time in the pop up menu Select Done to exit the menu c Select Acquisition Control If the Acquisition Control is Manual use the cursor keys to move the cursor to the Acquisition Mode field...

Страница 68: ...or Connect the Agilent 1670G or Agilent 1671G Logic Analyzer to the Pulse Generator Testing Combinations Connect to 8133A Channel 2 Output Connect to 8133A Channel 2 Output Connect to 8133A Channel 1...

Страница 69: ...he data channels that are connected according to one of the previous tables a Press the Format key b Select the field showing the channel assignments for one of the pods being tested Press the Clear e...

Страница 70: ...l Bus1 Type the following for your logic analyzer then press the Select key Agilent 1670G AA Agilent 1672G AA Agilent 1671G 2A Agilent 1673G A 5 Enable the pulse generator channel 1 channel 2 and trig...

Страница 71: ...nnel 2 then select Enter to display the master to master clock time width 2 If the positive going pulse width is more than 6 666 ns go to step d If the positive going pulse width is less than or equal...

Страница 72: ...he oscilloscope knob position the data waveform so that the waveform is centered on the screen c On the oscilloscope select Shift width channel 1 then select Enter to display the data signal pulse wid...

Страница 73: ...any multiple clock edge c Select the Setup Hold field then select the setup hold to be tested for all pods The first time through this test use the top combination in the following table Setup Hold C...

Страница 74: ...annel 1 then select Enter to display the setup time Time 1 2 d Adjust the pulse generator channel 2 Delay until the pulses are aligned according the the setup time of the setup hold combination select...

Страница 75: ...ain to turn on Compare At the pop up menu select Compare Move the cursor to the Equal field and press the Select key At the pop up menu select Not Equal Press Done e Move the cursor to the Reference L...

Страница 76: ...ed When aligning the data and clock waveforms using the oscilloscope align the waveforms according to the setup time of the setup hold combination being tested 0 0 ps or 100 ps Test the next channels...

Страница 77: ...pulse width 600 ps rise time 8133A Option 003 Function Generator Accuracy 5 10 6 frequency 3325B Option 002 SMA Cable 8120 4948 Adapter BNC m SMA f 1250 2015 BNC Test Connector 6x2 Set up the equipme...

Страница 78: ...onnect the logic analyzer 1 Using a 6 by 2 test connector connect channel 0 of Pod A1 to the pulse generator channel 1 output 2 Using the SMA cable and the BNC adapter connect the External Input of th...

Страница 79: ...e Config key b In the Configuration menu assign Pod 1 to Machine 1 To assign Pod 1 select the Pod 1 field then select Machine 1 c In the Analyzer 1 box select the Type field then select Timing Testing...

Страница 80: ...key to put an asterisk in the channel position activating the channel then press the Done key 3 Set up the Trigger menu a Select Acquisition Control Select the Acquisition Mode field and the acquisit...

Страница 81: ...dial in 100 ns d Select the Markers Off field then select Pattern e Select the Specify Patterns field Select X entering 1 and O entering 1 f Select Done to exit the Specify Patterns menu g Move the c...

Страница 82: ...logic analyzer to acquire data for at least 1 minute Observe the X to O time field and ensure the X marker to O marker time is between 409 56 and 409 64 s during the test Record the results in the per...

Страница 83: ...ecommended Model Part Digital Multimeter Measure resistance 4 wire better than 0 25 accuracy 3458A Cables 2 BNC m m 48 inch 8120 1840 Adapter BNC Tee m f f 1250 0781 Adapters 2 BNC f to Dual Banana Pl...

Страница 84: ...knob to dial in 1 1 e Move the cursor to the V Div field then use the RPG knob to dial in 20 mV f Move the cursor to the Offset field Set the Offset to 0 V by typing 0 then pressing the Select key g...

Страница 85: ...each BNC cable to the 4 wire resistance connections on the multimeter and connect the free ends of the cables to the BNC Tee Connect the male end of the BNC tee to the channel 1 input of the oscillos...

Страница 86: ...ield to 50 DC and V Div to 1 V Div Repeat steps 1 through 3 6 In the Channel menu change the Coupling field to 50 DC and V Div to 4 V Div Repeat steps 1 through 3 7 Connect the male end of the BNC tee...

Страница 87: ...ired Equipment Critical Specifications Recommended Model Part DC Power Supply 14 Vdc to 14 Vdc 0 1 mV resolution 3245A option 002 Digital Multimeter Better than 0 1 accuracy 3458A Cable BNC m m 48 inc...

Страница 88: ...e the cursor to the s Div field then use the RPG knob to dial in 500 ns 2 Set up the Display menu a Press the Display key b Select the Mode field then select Average c Move the cursor to the Average f...

Страница 89: ...Off by moving the cursor to the T markers field and pressing Select Select Off Connect the logic analyzer 1 Using a BNC to banana adapter connect one end of the cable to the power supply Connect the B...

Страница 90: ...t the power supply from the channel input b Press the blue shift key then press the Run key Wait for approximately five seconds averaging complete then press Stop c Press the Markers key Move the curs...

Страница 91: ...35 000 Vdc 1 mV resolution 3245A option 002 Digital Multimeter Better than 0 1 accuracy 3458A Cable BNC m m 48 inch 8120 1840 Adapter cable to power supply BNC f to Dual Banana Plug 1251 2277 Adapter...

Страница 92: ...ressing the Select key f Select the Coupling field then select 1M DC C AU TI O N Set the Channel Coupling field to 1M DC or damage to the equipment will result g Move the cursor to the s Div field the...

Страница 93: ...rkers are On turn the V markers Off by moving the cursor to the V markers field and pressing Select Connect the logic analyzer 1 Using a BNC to banana adapter connect one end of the cable to the power...

Страница 94: ...ess the Stop key Read the voltage from the Markers voltage field 0 00 V 80 mV and enter the value in the performance test record 5 Use the RPG knob to dial in 100 mV Div Press the blue shift key then...

Страница 95: ...value shown on the first line of the table b Move the cursor to the Offset field Use the front panel keyboard to type in the offset value shown in the first line of the table Use the left and right cu...

Страница 96: ...ons Recommended Model Part Signal Generator 1 250 MHz at approximately 170 mV rms 8656B Power Meter Sensor 1 250 MHz 3 accuracy 436 8482A Power Splitter Outputs differ by 0 15 dB 11667B Cable Type N m...

Страница 97: ...Move the cursor to the Offset field Set the offset to 0 by typing 0 then pressing the Select key f Select the Coupling field then select 50 DC g Move the cursor to the s Div field press Select then us...

Страница 98: ...level to 0 by typing 0 in the front panel keyboard then pressing Select 4 Turn off the voltage and time markers a Press the Marker key b Move the cursor to the V Markers field and press Select The Se...

Страница 99: ...o the power splitter input Connect the power sensor to one output of the power splitter 2 Using the N to BNC adapter and the BNC cable connect the other power splitter output to the channel 1 input of...

Страница 100: ...dial in a s Div value of 1 ns Div b Press the blue shift key then press the Run key After approximately 15 seconds averaging complete press the Stop key c Note the voltage reading in the Vp p field V...

Страница 101: ...ment Critical Specifications Recommended Model Part Signal Generator 200 MHz timebase accuracy 0 25 ppm 8656B Opt 001 Cable BNC m m 48 inch 8120 1840 Adapter Type N m to BNC f 1250 0780 Set up the equ...

Страница 102: ...Move the cursor to the Offset field Set the offset to 0 by typing 0 then pressing the Select key f Select the Coupling field then select 50 DC g Move the cursor to the s Div field press Select then u...

Страница 103: ...t it to Positive 4 Set up the Markers menu a Press the Marker key b Move the cursor to the T Markers field and press Select At the pop up menu select Auto c Select the X marker and set it on C1 at Lev...

Страница 104: ...up the T Markers Auto menu b Select the X marker Set On field At the pop up menu select Manual c Move the cursor to the O marker Occur field Press the 1 key then press Select d Press Done e Press the...

Страница 105: ...0 MHz 0 125 x full scale 0 5 division Equipment Required Equipment Critical Specifications Recommended Model Part Signal Generator 50 MHz and 225 MHz 30 80 mV RMS output 8656B Opt 001 Cable BNC 48 inc...

Страница 106: ...0 by typing 0 then pressing the Select key f Move the cursor to the Coupling field then press Select Select 50 DC g Move the cursor to the s Div field press Select then use the RPG knob to dial in 5 0...

Страница 107: ...el to 0 by typing 0 in the front panel keyboard then pressing Select 4 Turn off the voltage and time markers a Press the Marker key b Move the cursor to the V Markers field and press Select The Select...

Страница 108: ...lt the acquisition Read the Vp p field and record the voltage in the performance test record 2 Test the lower bandwidth trigger sensitivity a Use the RPG knob to dial in s Div of 20 ns b Set the signa...

Страница 109: ...100 mV 3 of threshold setting Pod 1 ECL 139 mV 0 V 100 mV Pass Fail Pass Fail ________ ________ Pod 2 ECL 139 mV 0 V 100 mV Pass Fail Pass Fail ________ ________ Pod 3 ECL 139 mV 0 V 100 mV Pass Fail...

Страница 110: ...K L M ________ ________ ________ ________ J K L M ________ ________ ________ ________ Setup Hold Time 0 5 3 5 ns J K L M ________ ________ ________ ________ J K L M ________ ________ ________ _______...

Страница 111: ..._______ _______ _______ _______ Setup Hold Time 0 5 4 0 ns J K L M _______ _______ _______ _______ All Pods Channel 11 Setup Hold Time 3 5 0 0 ns J K L M _______ _______ _______ _______ Setup Hold Ti...

Страница 112: ...0 20 mV Div 1 M 20 mV Div 50 200 mV Div 1 M 200 mV Div 50 1 V Div 1 M 1 V Div 50 4 V Div 1 M 4 V Div 50 20 mV Div 1 M 20 mV Div 50 200 mV Div 1 M 200 mV Div 50 1 V Div 1 M 1 V Div 50 4 V Div 1 M 4 V D...

Страница 113: ...l 1 Channel 2 Channel 1 Channel 2 Zero input offset 4 V Div 1 V Div 100 mV Div 10 mV Div 4 V Div 1 V Div 100 mV Div 10 mV Div DC input offset 35 00 V 10 00 V 2 00 V 2 00 V 10 00 V 35 00 V 35 00 V 10 0...

Страница 114: ...O MEAN X O MIN X O MEAN X O MIN X O MAX X O MAX X O MEAN X O ________ ________ ________ ________ ________ ________ ________ ________ ________ ________ Trigger Sensitivity Channel 1 Channel 2 Trigger...

Страница 115: ...erformance Test Record pattern generator Performance Test Record pattern generator Test Settings Results Self Tests Pass Fail ________ Testing Performance Performance Test Record pattern generator 3 9...

Страница 116: ...Testing Performance Performance Test Record pattern generator 3 92...

Страница 117: ...4 Logic analyzer calibration 4 2 To calibrate the oscilloscope 4 3 Set up the equipment 4 3 Load the Default Calibration Factors 4 4 Self Cal menu calibrations 4 5 Calibrating and Adjusting...

Страница 118: ...nce The oscilloscope circuitry in the Agilent 1670G series Logic Analyzers with the oscilloscope option requires an operational accuracy calibration by the user or service department under any of the...

Страница 119: ...cation Recommended Model Part Qty Cable 2 BNC 9 inch equal length 10502A 1 Cable BNC 10503A Adapter BNC tee m f f 1250 0781 1 Adapter BNC f f ug 914 u 1250 0080 Set up the equipment Turn on the logic...

Страница 120: ...Press the System key Select System then select Scope 2 Select the menu field top row second from the left then select Scope Calibration from the pop up menu 3 Select the Mode field then select Servic...

Страница 121: ...ou select Start the instrument will prompt you to connect the cable to the appropriate location on the rear panel of the instrument b Select the Procedure field then select Delay from the pop up menu...

Страница 122: ...provide accurate calibration for the oscilloscope operational accuracy calibration and probe calibration Equipment Required Equipment Critical Specifications Recommended Model Part Digital Multimeter...

Страница 123: ...key again At the pop up select Scope Calibration c Select the Mode field then select Service Cal d Select the Procedure field then select Cal BNC Out e Select Signal Probe Comp then select DC Level f...

Страница 124: ...g to four decimal places V1 _______ 3 In the Calibration menu set the DC Volts to 5 V 4 The digital voltmeter should read close to 5 0000 V Record the reading to four decimal places V2 _______ 5 In th...

Страница 125: ...field press Select then use the RPG knob to dial in 1 1 Verify the AC CAL OUTPUT port 1 Using the BNC cable connect channel 1 of the oscilloscope to the AC CAL OUTPUT connector 2 In the Calibration me...

Страница 126: ...Calibrating and Adjusting To test the CAL OUTPUT ports 4 10...

Страница 127: ...CD display signals 5 27 To test the keyboard signals 5 28 To test the flexible disk drive voltages 5 30 To test the hard disk drive voltages 5 32 To perform the BNC test 5 34 To test the logic analyze...

Страница 128: ...ive assemblies This instrument can be returned to Agilent Technologies for all service work including troubleshooting Contact your nearest Agilent Technologies Sales Office for more details C AU TI O...

Страница 129: ...the PV procedure in Chapter 5 Do a Test All Refer to the PV procedures in Chapter 5 Do all self tests pass Exit the test system Is the user problem still present E N D Replace failed assembly accordi...

Страница 130: ...CPU Board in the instrument Replace LCD Monitor Is the power suply fan running Ensure the power cord is properly connected Is the power cord properly connected Reconnect the power cord Suspect the pow...

Страница 131: ...t Install flexible disk with operating system into flexible disk drive Apply power Reflash boot ROM with latest op sys version Turn off the instrument Apply power Does instrument finish booting Replac...

Страница 132: ...Perform front panel keyboard self test Check signal input to keyboard Input signals OK Keyboard cable continuity OK Replace keyboard assembly Replace CPU board assembly CHART 4 CHART 1 Yes No No Yes...

Страница 133: ...CHART 5 PV Test Is the oscilloscope option installed Is the pattern generator option installed Do all Pattern Generator Tests pass Replace acquisition board Replace pattern generator board Failure of...

Страница 134: ...1 Chart 6 Problem with pattern generator Possible problem with cabling Do the cable test in Chapter 5 on suspect pod Contact HP for more information 6a 6b Does cable test pass Does cable test pass The...

Страница 135: ...lloscope acquisition Replace oscilloscope board Does timebase sweep Check oscilloscope probes Remove power and reseat oscilloscope board interface cable Are oscilloscope probes OK Is data correct Does...

Страница 136: ...t pass The pattern generator board is functioning properly Replace pattern generator board Swap suspect pod with known good one Redo test Does patern output test pass Replace suspect pod Swap suspect...

Страница 137: ...sk into the disk drive 2 Let the instrument warm up for a few minutes then cycle power by turning off then turning on the power switch If the instrument is not warmed up the power up test screen will...

Страница 138: ...ive If they have not already been copied insert the PV disk in the flexible disk drive before starting this procedure 1 If you just did the power up self tests go to step 2 If you did not just do the...

Страница 139: ...about each test you can run each test individually This example shows how to run an individual test 6 Select Run then select Single To run a test continuously select Repetitive Select Stop to halt a...

Страница 140: ...key on the screen will change from a light to a dark color b Test the knob by turning it in both directions c Note any failures then press the Done key a second time to exit the Front Panel Test The...

Страница 141: ...ll tests at one time by selecting All Tests To see more details about each test when troubleshooting failures you can run each test individually This example shows how to run all tests at once When th...

Страница 142: ...about each test you can run each test individually This example shows how to run an individual test 13 Select Run then select Single To run a test continuously select Repetitive Select Stop to halt a...

Страница 143: ...e test runs one time and the screen shows the results If you have an Agilent 1670G series Logic Analyzer without an oscilloscope or pattern generator go to step 19 If you have an Agilent 1670G series...

Страница 144: ...ample select Data Memory Test 18 In the Data Memory Test menu select Run then select Single The test runs one time then the screen shows the results When the test is finished select Done To run a test...

Страница 145: ...his example shows how to run the Clock Source Test The Vector Memory Test Address Counter Test and Instruction Tests are run in a similar manner When the tests finish the status for each test shows Pa...

Страница 146: ...hen remove the power cable Remove the cover of the instrument and the disk drive assembly including the support plate 2 Reconnect both the hard disk drive and flexible disk drive to the CPU board 3 Co...

Страница 147: ...d the LCD display and the LCD inverter This procedure is to be performed by service trained personnel aware of the hazards involved such as fire and electric shock 1 Remove the following assemblies Re...

Страница 148: ...ed personnel who are aware of the hazards involved such as fire and electrical shock should perform this procedure 1 Turn off the instrument and remove the power cable 2 Without disconnecting the keyb...

Страница 149: ...ting key and look for an appropriate response on the display 8 If the display responds as though the key was pressed replace the elastomeric keypad If the display does not respond as though the key wa...

Страница 150: ...strument then remove the power cable Remove the instrument cover and the disk drive 2 Reconnect the disk drive cable to the rear of the disk drive Turn the disk drive over so that the solder connectio...

Страница 151: ...K 00 21 NC 22 WRITE PROTECT 23 0V 24 READ DATA 25 0V 26 SIDE ONE SELECT 7 Select Stop and turn off the logic analyzer Remove the power cable The test will not immediately stop when Stop is selected it...

Страница 152: ...odel Part Digitizing Oscilloscope 100 MHz Bandwidth 54600B 1 Turn off the instrument then remove the power cable Remove the instrument cover and the disk drive assembly 2 Remove the two locking pins f...

Страница 153: ...and turn off the logic analyzer Remove the power cable The test will not immediately stop when Stop is selected it will continue until the current iteration of the disk test is completed and then stop...

Страница 154: ...ey Select Clear Trigger All b Select Arming Control In the Arming Control pop up menu select the field labeled Run then select Port In Press the Done key 5 Attach a BNC shorting cap to the External Tr...

Страница 155: ...e equipment and the logic analyzer 2 Set up the pulse generator a Set up the pulse generator according to the following table Pulse Generator Setup Timebase Channel 2 Period Channel 1 Mode Int Mode Pu...

Страница 156: ...nels are all assigned all asterisks Press the Done key c Select Master Clock then select a double edge for the clock of the pod under test Turn off the other clocks d In the Master Clock menu select S...

Страница 157: ...up the Trigger menu a Press the Trigger key b Select Modify Trigger then select Clear Trigger then select All 6 Set up the Listing menu a Press the List key b Select the field to the right of Base th...

Страница 158: ...nder test and the clock channel to the pulse generator channel 2 Output d Connect the odd numbered channels of the upper byte of the pod under test to the pulse generator channel 2 Output 8 On the log...

Страница 159: ...end of the pattern generator Pod 1 cable 2 Touch Output Patterns In the pop up menu touch Checkerboard Pattern 3 Using an oscilloscope verify the existence of logic level transitions by touching the...

Страница 160: ...clock cable 6 Using the oscilloscope as in step 3 verify the existence of logic level transitions by touching the oscilloscope probe to each clock output of the clock pod 7 In the pattern generator Ou...

Страница 161: ...cedure to re enter the original Ether address after replacing the CPU board The Ether address is on a sticker on the rear panel of the instrument 1 Look on the rear panel for the Ether Address sticker...

Страница 162: ...short is removed the circuit will reset in approximately 1 minute There should be 5 V after the 1 minute reset time Equipment Required Equipment Critical Specifications Recommended Model Part Digital...

Страница 163: ...6 10 Rear panel assembly 6 11 Power supply 6 12 Oscilloscope board 6 13 Pattern generator board 6 14 Front panel and keyboard 6 15 To remove and replace the LCD display 6 16 Handle plate 6 17 Fan 6 1...

Страница 164: ...ument is on or when the power cable is connected Never attempt to remove or install any assembly with the instrument on or with the power cable connected Replacement Strategy These replacement procedu...

Страница 165: ...Power supply MP15 BNC connector W10 Cable 60 conductor A8 Hard disk drive MP18 Rear panel W12 Fan cable A9 Flexible disk drive MP19 Handle brace W13 GPIB cable A10 SIMM MP21 Mounting plate W15 Power...

Страница 166: ...Exploded View of the Agilent 1670G series logic analyzer Replacing Assemblies 6 4...

Страница 167: ...wer off and remove the power cord 2 Remove the probe plate and disconnect the logic analyzer cables from the rear panel 3 Using the previous procedures remove the handle and the four rear feet 4 Remov...

Страница 168: ...out of the second slot of the chassis When installing the support tray ensure that the tabs on the support tray are inserted into the slots in the handle plate 6 Remove the flexible disk drive from t...

Страница 169: ...he following cables from the acquisition board C AU TI O N When reconnecting the cables the ribbon cable from the CPU Board to the Acquisition Board must not be connected to J12 This cable goes from t...

Страница 170: ...the handle brace b Remove one screw that secures the deck to the rear panel c Slide the deck out of the fourth slot of the chassis 5 Reverse this procedure to install the acquisition board C AU TI O N...

Страница 171: ...D data cable from the CPU board LCD Inverter J3 GPIB J13 RS 232 J8 Front Panel J7 3 Slide the board out the side of the instrument 4 Reverse this procedure to install the CPU board When connecting the...

Страница 172: ...W AR NI NG Hazardous voltages exist on the power supply To avoid electrical shock disconnect the power from the instrument before performing the following procedures After disconnecting the power wait...

Страница 173: ...ove the seven rear panel screws 5 Lift the rear panel away from the chassis 6 Reverse this procedure to install the rear panel Check that the following assemblies are properly installed before install...

Страница 174: ...the front of the instrument that secure the power supply to the bottom of the chassis 4 Loosen the remaining two T 15 screws on the bottom toward the rear of the instrument 5 Slide the power supply to...

Страница 175: ...oscilloscope board To do this press down on the cable release tabs on the cable socket located on the board b Remove the screw at the center of the oscilloscope board that secures the board to the mou...

Страница 176: ...nerator to acquisition board cable a Disconnect the acquisition board pattern generator board interface cable from the pattern generator board To do this press down on the cable release tabs on the ca...

Страница 177: ...in the appropriate holes in the chassis You can hold the spacer in place while installing the front panel by holding it with your finger through the disk drive mounting slot in the chassis 5 Remove t...

Страница 178: ...ply to discharge before servicing the instrument 2 Remove the LCD display a Disconnect the LCD data cable from the connector on back of the LCD display Removing replacing the LCD data cable at the CPU...

Страница 179: ...attached to the bezel with a foam gasket If the lens must be replaced remove it from the bezel To remove and replace the handle plate 1 Using previous procedures remove the following assemblies Handle...

Страница 180: ...h its cable nearest the fan connector feedthrough hole The airflow arrow on the fan must point in If you mount the fan backwards the instrument will overheat To remove and replace the pattern generato...

Страница 181: ...32 C cable forward and out of the rear panel 4 Reverse this procedure to install the GPIB and RS 232 C cables To remove and replace the I O board 1 Using previous procedures remove the following assem...

Страница 182: ...equired or failure indications 2 Remove accessories from the logic analyzer Only return accessories to Agilent Technologies if they are associated with the failure symptoms 3 Package the logic analyze...

Страница 183: ...7 Replaceable Parts Ordering 7 2 Replaceable Parts List 7 3 Exploded View 7 4 Power Cables and Plug Configurations 7 8 Replaceable Parts...

Страница 184: ...ilent Technologies Sales Office when the orders require billing and invoicing Transportation costs are prepaid there is a small handling charge for each order and there are no invoices For Agilent Tec...

Страница 185: ...eplaceable parts list Information included for each part on the list consists of the following Reference designator Agilent Technologies part number Total quantity included with the instrument Qty Des...

Страница 186: ...Exploded View Exploded view of the Agilent 1670G series logic analyzer Replaceable Parts Exploded View 7 4...

Страница 187: ...A4 01670 665142 1 Board Assembly ACQ 102 CH X 2M Agilent 1671G 002 A4 01670 665150 1 Board Assembly ACQ 68 CH X 64K Agilent 1672G A4 01670 665151 1 Board Assembly ACQ 68 CH X 256K Agilent 1672G 001 A...

Страница 188: ...WIL 168 340 02 GPIB cable to rear panel H25 2190 0016 2 WIL 377 507 02 Trigger In and Out BNC to rear panel H26 2950 0001 2 NUTH 3 8 32 093 Trigger In and Out BNC to rear panel H27 2190 0068 1 WIL 50...

Страница 189: ...Agilent 1672G W1 16710 61603 1 Probe Cable Agilent 1673G W2 01660 61601 1 RS 232 C Cable W3 01660 61611 1 I O Board Cable W4 01660 61615 1 Hard Disk Drive Cable W5 01660 61616 1 Flexible Disk Drive Ca...

Страница 190: ...wer cable The type of power cable plug shipped with the instrument depends on the country of destination The W 21 reference designators table previous page show option numbers of available power cable...

Страница 191: ...Board 8 7 The Oscilloscope Board 8 10 The Pattern Generator Board 8 13 Self Tests Description 8 15 Power up Self Tests 8 15 System Tests SysPV 8 16 Analyzer Tests Analy PV 8 19 Oscilloscope tests Scop...

Страница 192: ...operation for the logic analyzer and describes the self tests The information in this chapter will help you understand how the logic analyzer operates and what the self tests are testing This informa...

Страница 193: ...el theory is divided into two parts theory for the logic analyzer and theory for the acquisition boards A block diagram is shown with each theory The Agilent 1670G Series Logic Analyzer Agilent 1670G...

Страница 194: ...sk The DRAM stores the instrument configuration acquired data to be processed and any inverse assembler loaded in the instrument by the user LCD Display Controller and Display RAM Two RAMDAC ICs store...

Страница 195: ...drivers receivers interface the instrument with data communications equipment Slew rate control is provided on the ICs eliminating the need for external capacitors LCD Display Assembly The LCD display...

Страница 196: ...es I O Board The Input Output I O Board primarily includes a Centronics port and two mini DIN PS2 ports for the base 1670G series products The I O board also includes isolation circuitry for the LAN H...

Страница 197: ...The Logic Acquisition Board Logic Acquisition Board Block Diagram Theory of Operation The Logic Acquisition Board 8 7...

Страница 198: ...signal integrity to the comparators by matching the impedance of the probe cable channels with the impedance of the signal paths of the circuit board All 17 channels of each pod are terminated in the...

Страница 199: ...vidual pods The 16 data channels and the clock channel of each pod are all set to the same threshold voltage Test and Clock Synchronization Circuit ECLinPS ICs are used in the Test and Clock Synchroni...

Страница 200: ...The Oscilloscope Board Oscilloscope Board Block Diagram Theory of Operation The Oscilloscope Board 8 10...

Страница 201: ...Theory of Operation The Oscilloscope Board 8 11...

Страница 202: ...controlled oscillator VCO frequency divider and digital phase detector provide the sample clock for higher sample rates After conditioning and sampling the signals are digitized then stored in a hybri...

Страница 203: ...quisition is complete The Fine Interpolator is a dual slope integrator that acts as a time interval stretcher When the logic trigger receives a signal that meets the programmed triggering requirements...

Страница 204: ...een the system control and digital functions in the acquisition circuitry Analog Interface The Analog Interface provides control of analog functions in the acquisition circuitry It is primarily a 16 c...

Страница 205: ...from the end of the listing back to the beginning until the user instructs the module to stop RAM Consisting of six 256Kx16 VRAM ICs and RAM addressing circuitry the RAM stores the desired patterns th...

Страница 206: ...presents the user selected clocking rate is distributed to the above listed subcircuits on both the master board and all expander boards that are configured with the master board The output of the clo...

Страница 207: ...data for the logic analyzer to read The performance verification procedures in chapter 3 of this service guide make up the parametric performance verification for the logic analyzer Refer to chapter...

Страница 208: ...C can store a logical 1 or a logical 0 Interrupt Test The Interrupt Test checks the microprocessor interrupt circuitry With all interrupts disabled from their source the microprocessor waits for a sho...

Страница 209: ...t This test checks the basic interface functions of the RS 232 C port Both internal and external portions of the port circuitry are tested In order for the RS 232 C test to pass the RS 232 C loopback...

Страница 210: ...f the hard disk are checked and then write read tested like the flexible disk drive Passing the disk test implies that the flexible disk controller circuitry in the logic analyzer and the disk read wr...

Страница 211: ...panel key and the two RPG fields can be toggled by turning the knob The Front Panel Test is not called when Perform Test All is selected Display Test When initiated the display test will cause three t...

Страница 212: ...ing If this bit is not set then the path between the LAN cable and the LAN IC is operating properly If this bit is set then either the CPU board or the I O board must be replaced Bit 7 Timeout bit If...

Страница 213: ...the data signal with the master clock signal Passing the alignment test implies the clock optimization circuit that resides on the acquisition IC operates properly Consequently the acquisition IC can...

Страница 214: ...test implies that all of the pattern range edge and glitch resources are operating and that an occurrence of the pattern edge or glitch of interest is recognized Also passing this test implies that th...

Страница 215: ...has elapsed The clock period time interval is then compared with a known value A D Test This test verifies the correct operation of the A D converter on the board A check of the trigger in Trigger Im...

Страница 216: ...passed 1 failed to run 2 failed to stop 3 failed to both run and stop Vector Memory Test The Vector Memory Test does a first order check of the functionality of RAM The first pass of the test will loa...

Страница 217: ...hecks the counters of the entire board The returned integer has the following format BIT 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Row Col Fail row Failed RAM Bit 15 is used to flag where the value of the...

Страница 218: ...the third page The main status is checked to see that the hardware is stopped by the break instruction The second pass of the test places a wait on any condition in the event register Again the hardw...

Страница 219: ...owing bit format BIT 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 unused Test Mode The Test Mode bit positions have the following meaning 0 passed 1 failed to stop on wait in non if branch 2 took if branch o...

Страница 220: ...messages These messages are used to program the instrument function transfer measurement data and coordinate instrument operation Input and output of all messages in bit parallel byte serial form are...

Страница 221: ...The following figure shows the connections to the GPIB connector located on the rear panel GPIB Interface Connector Theory of Operation GPIB 8 31...

Страница 222: ...ot applicable 2 Transmitted Data TD BA Data from Mainframe High Space 0 12 V Low Mark 1 12 V 3 Received Data RD BB Data to Mainframe High Space 0 3 V to 25 V Low Mark 1 3 V to 25 V 4 Request to Send R...

Страница 223: ...me delay etc should be used Do not use repaired fuses or short circuited fuseholders To do so could cause a shock or fire hazard Service instructions are for trained service personnel To avoid dangero...

Страница 224: ...warranties of merchantability or fitness for a particular purpose Exclusive Remedies The remedies provided herein are the buyer s sole and exclusive remedies Agilent Technologies shall not be liable...

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