HP 16532A Service Manual Download Page 27

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3-8. INPUT RESISTANCE

This test verifies the input resistance of the oscilloscope module. A four-wire measurement is used for ac-
curacy at 50

Ω

Specification:

1 M

Ω

1% and 50

Ω

Equipment Required:

The following equipment is required for the test. Procedures are based on the model or part numbers rec-
ommended.

Equipment Required

Critical Specification

Recommended

Model/Part Number

Digital Multimeter

Cables (2)

Adapter

Adapters (2)

Measure resistance (4-wire) better than 0.25%
accuracy

Ω

BNC (m to m) 48-inch

Ω

BNC Tee (m)(f)(f)

Ω

BNC (f) to Dual Banana Plug

HP 3458A

HP 10503A

HP 1250-0781

HP 1251-2277

Procedure:

1. Set up the multimeter to make a 4-wire resistance measurement.

2. Use the BNC-to-banana adapters to connect one end of each BNC cable to the 4-wire resistance

connections on the multimeter, and connect the free ends of the cables to the BNC Tee.

3. Connect the male end of the BNC tee to the channel 1 input of the oscilloscope module. Set up the

oscilloscope module according to the following parameters in the order given:

Menu

Selection

Setting

Channel

Trigger

Input
Probe
V/Div
Offset
Coupling

Mode

1
1:1
20 mV
0 V
50

Ω

/ DC

Immediate

HP 16532A - Performance Tests

3-4

Summary of Contents for 16532A

Page 1: ...i c i a n sw i t ho v e r 1 5 0y e a r so f s p e c i a l i z a t i o n 9 0d a yw a r r a n t y 5d a yr i g h t o f r e t u r no na l l e q u i p me n t 1 3y e a r w a r r a n t i e sf o r n e wa n d p r e mi u m r e f u r b i s h e de q u i p me n t E v e r yu n i t t e s t e dt oO E Ms p e c i f i c a t i o n s S a t i s f a c t i o ng u a r a n t e e d Y o uh a v ep l a n s w ew i l l h e l py ...

Page 2: ... to help you support your product This manual provides the best information we could find It may be incomplete or contain dated information and the scan quality may not be ideal If we find a better copy in the future we will add it to the Agilent website Support for Your Product Agilent no longer sells or supports this product You will find any other available product information on the Agilent Te...

Page 3: ...1 GSa s Digitizing Oscilloscope COPYRIGHT HEWLETT PACKARD COMPANY COLORADO SPRINGS DIVISION 1991 1993 1900 GARDEN OF THE GODS ROAD COLORADO SPRINGS COLORADO U S A ALL RIGHTS RESERVED Manual Part No 16532 97002 PRINTED JULY 1993 ...

Page 4: ... use repaired fuses or short circuited fuse holders To do so could cause a shock or fire hazard Do not operate the instrument in the presence of flamma ble gasses or fumes Operation of any electrical instru ment in such an environment constitutes a definite safety hazard Do not install substitute parts or perform any unauthorized modification to the instrument Adjustments described in the manual a...

Page 5: ... 4 Power Requirements 2 1 2 5 Safety Requirements 2 1 2 6 Module Installation 2 1 2 7 Operating Environment 2 4 2 8 Storage 2 4 2 9 Packaging 2 4 2 10 Tagging for Service 2 4 SECTION III Performance Tests 3 1 Introduction 3 1 3 2 Recommended Test Equipment 3 1 3 3 Test Record 3 1 3 4 Performance Test Interval 3 1 3 5 Performance Test Procedures 3 1 3 6 DC CAL OUTPUT Test 3 2 3 7 AC CAL OUTPUT Test...

Page 6: ...ROTECT 4 8 4 14 Sealing the Mainframe 4 8 Section V Replaceable Parts 5 1 Introduction 5 1 5 2 Abbreviations 5 1 5 3 Replaceable Parts List 5 1 5 4 Ordering Information 5 1 5 5 Exchange Assemblies 5 1 5 6 Direct Mail Order System 5 2 SECTION VI Service 6 1 Introduction 6 1 6 2 Safety Requirements 6 1 6 3 Recommended Test Equipment 6 1 6 4 Module Block Diagram and Theory of Operation 6 1 6 5 Attenu...

Page 7: ...ocation of the PROTECT UNPROTECT Switch 4 3 4 3 Default Calibration Display 4 4 4 4 Ext Trig Null Calibration Connections 4 7 4 5 End of Calibration Display 4 8 4 6 Endplate Overlap Top Sequence 4 8 5 1 Parts Identification 5 4 6 1 HP 16532A Oscilloscope Block Diagram 6 2 6 2 Startup Screen 6 4 6 3 Load Test System Screen 6 5 6 4 Test System Screen 6 5 6 5 Functional Tests Screen 6 6 6 6 Main Test...

Page 8: ...uction 1 1 1 2 Module Covered by Manual 1 1 1 3 Safety Requirements 1 1 1 4 Product Description 1 2 1 5 Accessories Supplied 1 2 1 6 Accessories Available 1 2 1 7 Specifications 1 2 1 8 Operating Characteristics 1 2 1 9 Recommended Test Equipment 1 2 ...

Page 9: ...included are tables listing specifications and operating characteristics and a list of recommended test equipment To complete the service documentation for your HP 16500 Logic Analysis System place this service manual in the 3 ring binder with your other logic analysis system Service Guides 1 2 Module Covered by This Manual The information covered in this manual is for the HP 16532A 1 GSa s Oscill...

Page 10: ...ive divider probe set 1 2 m HP 10020A BNC to BNC cable 1 2 m HP 10503A 24 pin IC test clip HP 10211A BNC to BNC ac coupling capacitor HP 10240B 10 1 Probe 1 MΩ 7 5 pf miniprobe 1 m HP 10435A 1 1 Probes 40 pf miniprobe 1 m HP 10438A 64 pf miniprobe 2 m HP 10439A 50 Ω miniprobe 2 m HP 10437A 100 1 Probe 10 MΩ 2 5 pf miniprobe 2 m HP 10440A 1 7 Specifications Module specifications are listed in table...

Page 11: ... 50 to 250 MHz 0 125 x full scale Input Coupling 1 MΩ ac and dc 50 Ω dc only Input R selectable 1 MΩ 1 50 Ω 1 Input C Approximately 7 pF ___________________________________________________________________________________________ NOTES 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 ...

Page 12: ...10 V div 250 V Probe Factors Any integer ratio from 1 1 to 1000 1 Maximum Safe Input Voltage 1 MΩ 250 V dc peak ac 10 KHz 50 Ω 5 VRMS Channel to Channel Isolation dc to 50 MHz 40 dB 50 MHz to 250 MHz 30 dB TIMEBASE Range 1 ns div to 5 s div Resolution 20 ps Delay Pre trigger Range Time div Setting Available Delay 1 µs to 5 s div 8 x s div 1 ns to 500 ns div 4 µs Delay Post trigger Range Time div S...

Page 13: ...ns steps Duration accuracy is approximately 3 2 ns Auto Trigger If enabled the module will self trigger if no trigger condition is found within approximately 50 ms after arming Events Delay The trigger can be set to occur on the nth edge or pattern as specified by the user The number of events n can be set from 1 to 32 000 events Maximum count frequency is 70 MHz Intermodule Arms another measureme...

Page 14: ... in addition to previous acquisitions until screen is erased Average New acquisitions are averaged with old acquisitions with the updated waveform displayed until erased Maximum number of averages is 256 Overlay Up to 8 acquired waveforms from separate channels can be overlayed in the same display area Connect the dots Provides a display of the sample points connected by straight lines Waveform Re...

Page 15: ...evel at a positive or negative edge count adjustable from 1 to 100 Auto Search Statistics Mean maximum and minimum values for elapsed time from X to O markers for multiple runs Number of valid runs and total number of runs available Automatic Measurements The following pulse parameter measurements can be performed automatically Frequency Rise time pulse width Period Fall time pulse width V p p Pre...

Page 16: ...ion Source External BNC supplies a square wave approximately 0 0 mV to 800 mV into the open circuit at approximately 1000 Hz OPERATING ENVIRONMENT Temperature Instrument 0 to 55 C 32 to 131 F Probes and cables 0 to 65 C 32 to 149 F Humidity Instrument up to 95 relative humidity at 40 C 104 F Recommended disk media 8 to 80 relative humidity at 40 C 104 F Altitude To 4600 m 15 000 ft Vibration Opera...

Page 17: ... Power Meter Sensor 1 250 MHz 3 accuracy HP 436 8482A P Power Splitter Outputs differ by 0 15 dB HP 11667B P Blocking Capacitor 50 Ω BNC m to f 0 18 µF 200 V HP 10240B P Adapter 50 Ω BNC m m HP 1250 1236 C Adapter 50 Ω Type N m to BNC m HP 1250 0082 P Adapter 50 Ω BNC f to Dual Banana Plug HP 1251 2277 P Adapter 50 Ω Type N m to BNC f HP 1250 0780 P Tee Adapter 50 Ω BNC m f f HP 1250 0781 P C Cabl...

Page 18: ...duction 2 1 2 2 Initial Inspection 2 1 2 3 Preparation for Use 2 1 2 4 Power Requirements 2 1 2 5 Safety Requirements 2 1 2 6 Module Installation 2 1 2 7 Operating Environment 2 4 2 8 Storage 2 4 2 9 Packaging 2 4 2 10 Tagging for Service 2 4 ...

Page 19: ...arrange for repair or replacement at Hewlett Packard s option without waiting for claim settlement 2 3 Preparation for Use Read the Safety Considerations in the front of this manual and in Section I before installing or operating this module 2 4 Power Requirements All power supplies required for operating the HP 16532A Oscilloscope Module are supplied to the module through the backplane connector ...

Page 20: ...in the slot above the expander cards The master card and expander cards must be in adjoining slots Cards or filler panels below the empty slots intended for module installation do not have to be re moved to install a module above them Procedure 1 Turn instrument power switch off unplug power cord and disconnect any input connections 2 Starting from the top loosen the thumb screws on the filler pan...

Page 21: ...onnector Keep applying pressure to the center of the card endplate while tightening the thumb screws finger tight 7 Repeat step 6 for all cards and filler panels in a bottom to top order See figure 2 2 8 Any filler panels that are not used should be kept for future use Filler panels must be installed in all unused card slots for correct air circulation Figure 2 2 Endplate Overlap Bottom Sequence H...

Page 22: ...feet The module should also be protected from temperature extremes which cause condensation on the instrument 2 9 Packaging The following general instructions should be used for repacking the module with commercially available materials Wrap the module in antistatic plastic Use a strong shipping container A double walled carton made of 350 lb test material is adequate Use a layer of shock absorbin...

Page 23: ...cord 3 1 3 4 Performance Test Interval 3 1 3 5 Performance Test Procedures 3 1 3 6 DC CAL OUTPUT Test 3 2 3 7 AC CAL OUTPUT Test 3 3 3 8 Input Resistance 3 4 3 9 Voltage Measurement Accuracy 3 6 3 10 Offset Accuracy 3 9 3 11 Bandwidth 3 11 3 12 Time Measurement Accuracy 3 13 3 13 Trigger Sensitivity 3 15 ...

Page 24: ...be tabulated on the Performance Test Record table 3 1 at the end of the procedures The test record lists all of the tested specifications and their acceptable limits The results recorded on the test record may be used for comparison in periodic maintenance and troubleshooting or after repairs and adjustments have been made 3 4 Performance Test Interval Periodic performance verification of the HP 1...

Page 25: ...0503A HP 1251 2277 Procedure 1 Use the BNC to banana adapter to connect the BNC cable between the multimeter and the oscillo scope module DC CAL OUTPUT connector 2 On the oscilloscope module set the following parameters in the order given Menu Selection Setting Calibration Mode Procedure DC Volts Service Calibration DC Cal BNC 0 V 3 The DVM should read close to 0 0000 V Record the reading to four ...

Page 26: ...nded Model Part Number Cable 50 Ω BNC m to m 48 inch HP 10503A Procedure 1 Use the BNC cable to connect the AC CAL OUTPUT to channel 1 input of the oscilloscope module 2 On the oscilloscope module set the following parameters in the order given Menu Selection Setting Calibration Channel Mode Procedure Signal Coupling Probe Service Calibration Oscillator Output Probe Compensation 1 MΩ DC 1 1 3 In t...

Page 27: ...C m to m 48 inch 50 Ω BNC Tee m f f 50 Ω BNC f to Dual Banana Plug HP 3458A HP 10503A HP 1250 0781 HP 1251 2277 Procedure 1 Set up the multimeter to make a 4 wire resistance measurement 2 Use the BNC to banana adapters to connect one end of each BNC cable to the 4 wire resistance connections on the multimeter and connect the free ends of the cables to the BNC Tee 3 Connect the male end of the BNC ...

Page 28: ... 50 Ω DC and V Div to 200 mV Div Repeat steps 4 through 6 8 In the Channel menu change the Coupling field to 50 Ω DC and V Div to 1 V Div Repeat steps 4 through 6 9 In the Channel menu change the Coupling field to 50 Ω DC and V Div to 4 V Div Repeat steps 4 through 6 10 Connect the male end of the BNC tee to the channel 2 input of the oscilloscope module 11 Repeat steps 3 through 9 for channel 2 r...

Page 29: ...following equipment is required for this test Procedures are based on the model or part numbers rec ommended Equipment Required Critical Specification Recommended Model Part Number DC Power Supply Digital Multimeter Cable Adapter cable to power supply Adapter Blocking Capacitor 14 Vdc to 14 Vdc 0 1 mV resolution Better than 0 1 accuracy 50 Ω BNC m to m 48 inch 50 Ω BNC f to Dual Banana Plug 50 Ω B...

Page 30: ... menu delete channel 2 If channel 1 is not inserted insert channel 1 Set the following parameters in the order given Menu Selection Setting Channel Trigger Display Input Probe Coupling s Div Mode Mode Average Grid Markers 1 1 1 1 MΩ DC 500 ns Immediate Average 8 On On Set the Channel Coupling field to 1 MΩ DC or damage to the equipment will result Figure 3 1 Voltage Measurement Accuracy Test HP 16...

Page 31: ...pply to the first supply value listed in the table Connect the power supply to the channel input as shown in figure 3 1 6 On the oscilloscope select RUN REPETITIVE and wait for approximately five seconds then select STOP Read the voltage displayed under the channel label on the left of the display Enter this value on the performance test record in the Measured column 7 To obtain the test results s...

Page 32: ...o Dual Banana Plug HP 6114A HP 3458A HP 10503A HP 1251 2277 Procedure Zero Input Offset 1 Disconnect all cables and probes from the oscilloscope inputs In the Waveform Selection menu de lete channel 2 If channel 1 is not inserted insert channel 1 Then set up the oscilloscope module according to the following parameters in the order given Menu Selection Setting Channel Trigger Display Input Probe v...

Page 33: ...ipment will result 7 Use the BNC to banana adapter to connect the BNC cable between the power supply and channel 1 input Monitor the power supply using a voltmeter 8 Use the following table for the next steps V Div Offset Supply Min Max 1 V Div 100 mV Div 20 mV Div 20 mV Div 100 mV Div 1 V Div 35 00 V 10 00 V 2 00 V 2 00 V 10 00 V 35 00 V 35 00 V 10 00 V 2 00 V 2 00 V 10 00 V 35 00 V 35 4 V 10 1 V...

Page 34: ...nch 50 Ω Type N m to BNC m HP 8656B HP 436 8482A HP 11667B HP 11500B HP 1250 0082 Procedure 1 With the N cable connect the signal generator to the power splitter input Connect the power sensor to one output of the power splitter 2 Using an N to BNC adapter connect the other power splitter output to the Channel 1 input of the oscilloscope module 3 In the Waveform Selection menu delete channel 2 If ...

Page 35: ...and select RUN REPETITIVE 10 After the measurement settles averaging complete select STOP In the Auto Measure menu note the Vp p reading V250MHz ________mV 11 Calculate the response using the formula response dB 20 log10 V250Mhz V1MHz 20log10 _____ ______dB 12 Correct the result from step 11 with any differences in the power meter from step 8 Observe signs For example Result from step 11 2 3 dB Po...

Page 36: ...8 inch 50 Ω Type N m to BNC f HP 8656B Opt 001 HP 10503A HP 1250 0780 Procedure 1 Set the signal generator to 181 81818 MHz 5 5 ns period and approximately 600 mV rms 2 Use the N to BNC adapter to connect the cable to the signal generator Connect the free end of the BNC cable to the channel 1 input 3 In the Waveform Selection menu delete channel 2 If channel 1 is not inserted insert channel 1 Set ...

Page 37: ...nd the MAX X O are within 150 ps of the MEAN X O Record the results in the performance test record 7 Select the Markers Auto menu and set the following parameters Menu Selection Setting Markers Auto X O Statistics Manual Set on chan 1 at Level 50 Slope Positive Occur 1 On 8 Select DONE In the Display menu set MODE AVERAGE 8 and DELAY 99 00 ns Select RUN RE PETITIVE and allow the oscilloscope modul...

Page 38: ...ble Adapter 50 and 250 MHz 30 80 mV rms output 50 Ω BNC 48 inch 50 Ω Type N m to BNC f HP 8656B Opt 001 HP 10503B HP 1250 0780 Procedure 1 In the Waveform Selection menu delete channel 2 If channel 1 is not inserted insert channel 1 On the oscilloscope module set the following parameters in the order given Menu Selection Setting Channel Trigger Display Input Probe v Div Offset Coupling s Div Mode ...

Page 39: ... 5 ns Div and select RUN 8 In the Auto Measure menu read Vp_p Adjust the signal generator output level so that the signal is close to and not more than 200 mVp_p 9 In the Trigger menu adjust the trigger level for a stable display The test passes if the trigger is sta ble Record whether the trigger is stable or is not stable in the performance test record 10 On the oscilloscope module select STOP I...

Page 40: ...0Ω 200mV Div _____________Ω 1MΩ 200mV Div _____________Ω 50Ω 1V Div _____________Ω 1MΩ 1V Div _____________Ω 50Ω 4V Div _____________Ω 1MΩ 4V Div _____________Ω Channel 2 Reading 50Ω 20mV Div _____________Ω 1MΩ 20mV Div _____________Ω 50Ω 200mV Div _____________Ω 1MΩ 200mV Div _____________Ω 50Ω 1V Div _____________Ω 1MΩ 1V Div _____________Ω 50Ω 4V Div _____________Ω 1MΩ 4V Div _____________Ω 3 9...

Page 41: ...cy DC Input Offset Channel 2 V Div Setting Reading Actual 4V Div 0 00V 320 0mV ___________V 1V Div 0 00V 80 0mV ___________V 100mV Div 0 00V 8 0mV ___________V 10mV Div 0 00V 800 0µV ___________V Supply Min Max Actual 35 00V 35 4V 34 6V __________V 10 00V 10 1V 9 90V __________V 2 00V 2 02V 1 98V __________V 2 00V 1 98V 2 02V __________V 10 00V 9 90V 10 1V __________V 35 00V 34 6V 35 4V __________...

Page 42: ... O __________ns MAX X O MEAN X O _________ps MEAN X O __________ns MIN X O __________ns MEAN X O MIN X O _________ps MAX X O __________ns MAX X O MEAN X O _________ps 3 13 Trigger Sensitivity Channel 1 Trigger Stable 100mVp_p Yes ____ No ____ Trigger Stable 200mVp_p Yes ____ No ____ Channel 2 Trigger Stable 100mVp_p Yes ____ No ____ Trigger Stable 200mVp_p Yes ____ No ____ HP 16532A Performance Te...

Page 43: ...ion Switch 4 1 4 6 Recommended Test Equipment 4 2 4 7 Instrument Warmup 4 2 4 8 Calibration 4 2 4 9 Setting the PROTECT UNPROTECT Switch to UNPROTECT 4 3 4 10 Equipment Required for Calibration 4 4 4 11 Loading the Default Calibration Factors 4 4 4 12 Self Cal Menu Calibrations 4 5 4 13 Setting the PROTECT UNPROTECT Switch to PROTECT 4 8 4 14 Sealing the Mainframe 4 8 ...

Page 44: ...ions Immediate calibration is required if one of the following occurs Oscilloscope module is installed repaired or replaced or if the card slot configuration is changed The oscilloscope software changes revision number and asterisks are on the calibra tion menu Ambient temperature changes more than 10 C If you add or delete a card s from a calibrated multicard oscilloscope module you must perform ...

Page 45: ... RAM on the board The procedures use signals generated in the oscilloscope module itself to calibrate channel sensitivity offset and trigger parameters The calibration factors set up the module each time the instrument is turned on The calibration procedures in this section should be followed in their entirety and in the sequence listed in table 4 1 Though in this section the default calibrations ...

Page 46: ...wer from the instrument Pull halfway out all of the modules located above the oscilloscope and remove the filler panels and cards located above the oscilloscope See figure 4 1 for the removal sequence 2 Remove the oscilloscope module and set the PROTECT UNPROTECT switch to the UNPROTECT position See Figure 4 2 to locate this switch 3 Repeat step 2 for every oscilloscope module if this is a multimo...

Page 47: ...board must be set to UNPROTECT Load the default calibration factors as follows 1 Touch the menu field top row second from the left then select Calibration from the pop up menu 2 Touch the Mode field then select Service Cal from the pop up menu 3 Touch the Procedure field then select Default Values from the pop up menu Note After you touch the Start field you can abort the calibration procedure eit...

Page 48: ...xcept channel 1 of the master board and Ext Trig Null for the external trigger ECL Calibrate Vert Cal of the Self Cal menu as follows 1 Connect two BNC 50 Ω 9 inch cables to the BNC tee adapter Note When you touch Start the instrument will prompt you to connect the cables to the appropriate locations on the rear panel of the module 2 Touch the Mode field then select Self Cal from the pop up menu 3...

Page 49: ...e field then select Time Null from the pop up menu 3 Touch the Channel field then select S2 from the pop up menu where S is the slot letter where the oscilloscope module is installed in the mainframe 4 Touch the Start field and follow the instructions on the display 5 Repeat steps 3 through 4 for each channel replacing S2 with the appropriate channel number 6 At the conclusion of the time null cal...

Page 50: ...the Start field and follow the instructions on the display 4 At the conclusion of the ext trig null calibration remove the cables from the rear of the module Messages will be displayed as each calibration routine is completed to indicate calibration has passed or failed The resulting calibration factors are automatically stored to nonvolatile RAM at the conclusion of each calibration routine This ...

Page 51: ...located above the oscilloscope See figure 4 6 for the removal sequence 2 Remove the oscilloscope module and set the PROTECT UNPROTECT switch to the PROTECT position See Figure 4 2 to locate this switch 3 Repeat step 2 for each module calibrated 4 Reinstall the modules and filler panels in reverse order of steps 1 and 2 4 14 Sealing the Mainframe After calibration has been completed the mainframe s...

Page 52: ...TABLE OF CONTENTS Replaceable Parts 5 1 Introduction 5 1 5 2 Abbreviations 5 1 5 3 Replaceable Parts List 5 1 5 4 Ordering Information 5 1 5 5 Exchange Assemblies 5 1 5 6 Direct Mail Order System 5 2 ...

Page 53: ...esignation Chassis mounted parts in alphanumerical order by reference designation The information given for each part consists of the following Complete reference designation Hewlett Packard part number Total quantity Description of part Check digit The total quantity for each part is only given once at the first appearance of the part number in the list 5 4 Ordering Information To order a part li...

Page 54: ...The advantages are as follows Direct ordering and shipment from Hewlett Packard Parts Center in Mountain View California No maximum or minimum on any mail order there is a minimum order for parts ordered through local Hewlett Packard offices when orders require billing and invoicing Prepaid transportation there is a small handling charge for each order No invoices to provide these advantages check...

Page 55: ...gh voltage Hertz input output integrated circuit inside diameter inch include s incandescent input intensity internal inverter junction field effect transistor jacket kilo 103 low pound latch local light emitting diode long lithium lock lockwasher low power Schottky low voltage mega 106 megohms meter distance machine maximum MFR MICPROC MINTR MISC MLD MM MO MTG MTLC MUX MW N NC NMOS NPN NPRN NRFR ...

Page 56: ...Figure 5 1 Parts Identification HP 16532A Replaceable Parts 5 4 ...

Page 57: ... 2075 5 4 Nut Hex 1 2 inch RF Connector H4 _________ 2 Nut Hex RF Connector Included with W2 H5 _________ 2 Washer RF Connector Included with W2 H6 0515 0430 3 3 Endplate Screw H7 0515 1246 1 4 Attenuator Retainer Screw MP1 16532 40501 2 1 Rear Panel MP2 16500 29101 6 1 Ground Spring MP3 16532 94301 3 1 ID Label W1 16532 61601 7 1 Master Slave Trigger Cable W2 16532 61602 8 1 External Trigger Cabl...

Page 58: ...dule Block Diagram and Theory of Operation 6 1 6 5 Attenuator Theory of Operation 6 1 6 6 Main Assembly Theory of Operation 6 1 6 7 Self Tests 6 4 6 8 Troubleshooting 6 10 6 9 Oscilloscope Module Removal and Replacement 6 18 6 10 Trigger Cable Removal and Replacement 6 20 6 11 Attenuator Removal and Replacement 6 21 ...

Page 59: ...nnels See figure 6 1 6 5 Attenuator Theory of Operation The channel signals are conditioned by the attenuator preamps thick film hybrids containing passive attenuators impedance converters and a programmable amplifier The channel sensitivity defaults to the standard 1 2 4 sequence other sensitivities can be set also However the firmware uses passive attenuation of 1 5 25 and 125 with the programma...

Page 60: ...so that it can be sent to memory FISO Memory 8000 samples of the FISO fast in slow out memory are used per measurement per channel Memory positions are not addressed directly The configuration is a ring which loops continuously as it is clocked Memory position is tracked by counting clocks The clocking rate is the same as the ADC however the clock frequency is half that of the ADC since the FISO c...

Page 61: ...s a signal back to the time base hybrid The time base hybrid then starts the post trigger delay counter When the countdown reaches zero the sample clocks are stopped and the CPU is signaled that the acquisition 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 requirement...

Page 62: ... ognized as a single unit in the test menu The external trigger cables connected to the ECL IN and ECL OUT do not need to be removed in order to do the self test for each board All other cable connections must be removed All self tests can be run without access to the interior of the instrument If a self test fails refer to section 6 8 Troubleshooting Self Test Access Procedure 1 Disconnect all os...

Page 63: ...e user operating system is overwritten in the mainframe system RAM 5 From the test system screen in figure 6 4 touch Test System then touch 1 GSa s SCOPE D For the example shown in figure 6 4 the oscilloscope module is in slot D If multiple oscilloscope mod ules are present select the one to be tested Figure 6 3 Load Test System Screen Figure 6 4 Test System Screen HP 16532A Service 6 5 ...

Page 64: ...cific test field or run automatically through all tests one time by touching the All Tests field When either All Tests or individual tests are run the status will change to either PASSED or FAILED If you do all tests by touch ing the All Tests field skip to step 11 The procedures given in steps 7 through 12 use the A D Test as an example of how individual tests are done Figure 6 5 Functional Tests...

Page 65: ...number of test runs and the number of test failures 8 Touch Run then drag your finger to Single or Repetitive During the time a Single run or a Repetitive run is executing the Run field displays Stop 9 To stop a Repetitive run touch Stop See figure 6 8 Figure 6 7 A D Test Run Screen Figure 6 8 Stop Field HP 16532A Service 6 7 ...

Page 66: ...lf tests touch the following fields in the lettered sequence below a 1GSa s Scope b Test System c Configuration d Exit Test 12 Touch the box that reads Touch box to Exit Test System See figure 6 9 Figure 6 9 Exit Test System Screen HP 16532A Service 6 8 ...

Page 67: ...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 convertor on each board A check of the trigger in Trigger Immediate mode is first made The A D convertors are then exercised by setting the reference voltage and channel offset such that a simulated acquisition obtains data in the extremes and middle of the quantization r...

Page 68: ... the Service Cal mode that can help you troubleshoot the oscilloscope module When the problem is found and corrected run all of the calibration procedures given in Section IV Calibration If you suspect a fault in the system you can load the system default values to see if the NVRAM parame ters have possibly been corrupted The procedure for loading the default values is given in Section IV un der t...

Page 69: ...00 MHz 50 Ω Bandwidth 100 MHz Real Time 50 Ω BNC m to m 48 inch HP 5315A Option 003 HP 54502A HP 10503A Procedure 1 Connect the BNC cable from the AC CAL OUTPUT connector on the rear panel of the HP 16532A oscilloscope module to the input of the frequency counter 2 On the HP 16532A oscilloscope module set the following parameters in the order given Menu Selection Setting Channel Trigger Calibratio...

Page 70: ... Coupling s Div Acquisition Mode Level Slope 1 000 1 200 mV 0 0 V DC 10 ns Realtime Edge 200 mV Falling 6 In the HP 16532A Oscilloscope trigger menu select Auto Trig On Verify that the 100 MHz System Clock is gated 7 Select STOP on both the HP 54502A and HP 16532A oscilloscopes 8 Disconnect the cable from both oscilloscopes HP 16532A Service 6 12 ...

Page 71: ...Troubleshooting Sheet 1 Figure 6 10 Troubleshooting Flowchart H P 1 6 5 3 2 A T R O U B L E S H O O T I N G S H E E T 1 HP 16532A Service 6 13 ...

Page 72: ...Troubleshooting Sheet 2 Figure 6 10 Troubleshooting Flowchart H P 1 6 5 3 2 A T R O U B L E S H O O T I N G S H E E T 2 HP 16532A Service 6 14 ...

Page 73: ...Troubleshooting Sheet 3 Figure 6 10 Troubleshooting Flowchart H P 1 6 5 3 2 A T R O U B L E S H O O T I N G S H E E T 3 HP 16532A Service 6 15 ...

Page 74: ...Troubleshooting Sheet 4 Figure 6 10 Troubleshooting Flowchart H P 1 6 5 3 2 A T R O U B L E S H O O T I N G S H E E T 4 HP 16532A Service 6 16 ...

Page 75: ...Troubleshooting Sheet 5 Figure 6 10 Troubleshooting Flowchart H P 1 6 5 3 2 A T R O U B L E S H O O T I N G S H E E T 5 HP 16532A Service 6 17 ...

Page 76: ...he attenuators are faulty re move the faulty attenuator and replace it with a new one Refer to paragraph 6 11 for procedures to re move and replace a faulty attenuator Oscilloscope Module Removal Procedure Do not install remove or replace the module in the instrument unless the instru ment power is turned off 1 Turn off the instrument power switch unplug the power cord and disconnect any input or ...

Page 77: ...rocedure Oscilloscope Module Replacement Procedure 1 If you have not already done so pull the installed boards half way out of the card slots refer to steps 1 through 3 of the preceding procedure Oscilloscope Module Removal 2 Determine which modules you want to install in the mainframe and the slots where you want them installed 3 Starting with the bottom slot slide each module to be installed app...

Page 78: ...his instrument or the cards in it Trigger Cable Removal Procedure 1 Follow the procedures given in paragraph 6 9 Oscilloscope Module Removal and Replacement to remove the HP 16532A Oscilloscope Module to be serviced 2 Remove the hex nut H4 and the washer H5 from the SMB connector on the cable to be removed See figure 6 13 Figure 6 13 Oscilloscope Module Exploded View HP 16532A Service 6 20 ...

Page 79: ...ow the procedures given in paragraph 6 9 Oscilloscope Module Removal and Replacement to remove the HP 16532A Oscilloscope Module to be serviced 2 Remove the four hex nuts H3 from the BNC connectors on the rear panel MP1 See figure 6 13 3 Remove the two hex nuts H4 and the two washers H5 from the SMB connectors on the rear panel 4 Remove the three end plate screws H6 holding the rear panel MP1 and ...

Page 80: ... three end plate screws H6 You may need to loosen the attenuator retainer screws H7 before assembling the ground spring to the board assembly then tighten the attenuator screws H7 when the assembly is finished d Attach the SMB connectors to the rear panel MP1 with two hex nuts H4 and two washers H5 e Attach the BNC connectors to the rear panel MP1 with four hex nuts H3 Note Tighten the hex nuts do...

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