HP 16532A Service Manual
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HP 16532A Service Manual

1 gsa/s digitizing oscilloscope
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  • Page 1 T h e t e s t & me a s u r e me n t e q u i p me n t y o u n e e d a t t h e p r i c e y o u w a n t . A l l t e s t I n s t r u me n t s , I n c .
  • Page 2 Agilent Technologies. We have made no changes to this manual copy. The HP XXXX referred to in this document is now the Agilent XXXX. For example, model number HP8648A is now model number Agilent 8648A.
  • Page 3 SERVICE MANUAL HP 16532A 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 SAFETY CONSIDERATIONS • GENERAL - This is a Safety Class I instrument (provided with Do not install substitute parts or perform any unauthorized terminal for protective earthing). modification to the instrument. • OPERATION - BEFORE APPLYING POWER verify that the Adjustments described in the manual are performed with power transformer primary is matched to the available line power supplied to the instrument while protective covers...

  • Page 5: Table Of Contents

    HP 16532A - Table of Contents CONTENTS SECTION I General Information 1-1. Introduction ..........................1-1 1-2. Module Covered by This 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.
  • Page 6 HP 16532A - Table of Contents SECTION IV Calibration 4-1. Introduction..........................4-1 4-2. Safety Requirements ........................ 4-1 4-3. Calibration Interval........................4-1 4-4. Maintaining System Integrity....................4-1 4-5. Calibration Protection Switch....................4-1 4-6. Recommended Test Equipment ....................4-2 4-7. Instrument Warmup........................4-2 4-8.
  • Page 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.
  • Page 8 TABLE OF CONTENTS General Information 1-1. Introduction...........................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: Section I

    3-ring binder with your other contains information for finding a defective logic analysis system Service Guides. assembly by testing and servicing the HP 16532A 1 GSa/s Oscilloscope Module. Also included in the guide are installation procedures and a list of 1-2.

  • Page 10: Product Description

    HP 16532A - General Information • 24-pin IC test clip (HP 10211A) 1-4. Product Description • BNC-to-BNC ac coupling capacitor The HP 16532A Oscilloscope Module is a 1 GSa/s (HP 10240B) digitizing oscilloscope. Some of the main features are: 10:1 Probe: •...
  • Page 11 Number of Channels: 2, 4, 6, 8 simultaneous channels using the same time base setting(s) Up to 10 channels with independent time bases for each pair of channels. Up to 18 channels with the HP 16501A Expansion Frame. Rise Time : 1.4 ns...
  • Page 12 HP 16532A - General Information Table 1-2. HP 16532A Operating Characteristics HP 16532A OPERATING CHARACTERISTICS VERTICAL (at BNC) Vertical Sensitivity Range (1:1 Probe): 4 mV/div to 10 V/div in 1-2-4 increments DC Offset Range (1:1 Probe): Vertical Sensitivity Available Offset ±...
  • Page 13 HP 16532A - General Information Table 1-2. HP 16532A Operating Characteristics (cont.) TRIGGERING Trigger Level Range: Within display window (full scale and offset) Trigger Modes: Immediate: Triggers immediately after arming condition is met. Edge: Triggers on rising or falling edge of any internal channel or external trigger, count adjustable from 1 to 32,000.
  • Page 14 HP 16532A - General Information Table 1-2. HP 16532A Operating Characteristics (cont.) WAVEFORM DISPLAY Displayed Waveforms: Eight waveform windows maximum, with scrolling across 96 waveforms. Display Formats: Waveforms can be displayed in an overlapping and/or non-overlapping format. Display capability of A− B and A+ B is also provided.
  • Page 15 HP 16532A - General Information Table 1-2. HP 16532A Operating Characteristics (cont.) MEASUREMENT AIDS Time Markers: Two vertical markers, X and O, are provided for measurements of time and voltage. Capabilities are: measure voltage at point where X and O markers cross each analog waveform;...
  • Page 16 HP 16532A - General Information Table 1-2. HP 16532A Operating Characteristics (cont.) SETUP AIDS Autoscale: Autoscales the vertical and horizontal ranges, offset, and trigger level to display the input signals. Requires a frequency between 50 Hz and 250 MHz. Presets: Scales the vertical range, offset, and trigger level to predetermined values for displaying ECL or TTL waveforms.
  • Page 17 HP 8656B Option 001 170 mV RMS resolution Output Accuracy: ± 1 dB 1 MHz time base accuracy 0.25 ppm Range: − 35.000 to + 35.000 Vdc, ± 1 mV HP 6114A Dc Power Supply Digital Multimeter 0.1 mV resolution HP 3458A Accuracy: better than 0.005%...
  • Page 18 TABLE OF CONTENTS Installation 2-1. Introduction ......................... 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.

  • Page 19: Installation

    Keep the shipping material so the carrier can inspect it. The Hewlett-Packard office will The HP 16532A Oscilloscope Module will take up arrange for repair or replacement at one slot in the card cage. For every additional Hewlett-Packard’s option without waiting for claim...
  • Page 20 Installation Considerations • The HP 16532A Oscilloscope Modules can be installed in any available card slot. • For multiple modules connected as one unit, the master card must be placed in the slot above the expander cards. The master card and expander cards must be in adjoining slots.
  • Page 21 HP 16532A - Installation 4. Slide the oscilloscope module into the card cage approximately halfway. 5. If you have more oscilloscope cards to install, slide them into the card cage approximately halfway. 6. Firmly seat the bottom card into the backplane connector. Keep applying pressure to the center of the card endplate while tightening the thumb screws finger tight.

  • Page 22: Operating Environment

    Wrap the module in antistatic plastic. be provided against internal condensation. • Use a strong shipping container. A double- The HP 16532A Oscilloscope Module will operate walled carton made of 350-lb test material is at all specifications within the temperature and adequate.
  • Page 23 TABLE OF CONTENTS 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 ......................3-3 3-8.

  • Page 24: Performance Tests

    At the end of this section is a form that Periodic performance verification of the can be used as a record of performance test HP 16532A Oscilloscope Module is required at results. one-year intervals. The instrument’s performance should be verified after it has been serviced, or if improper operation is suspected.

  • Page 25: Dc Cal Output Test

    HP 16532A - Performance Tests 3-6. DC CAL OUTPUT Test The DC CAL OUTPUT port on the rear panel is used for instrument calibration and probe calibration. Though calibrator accuracy is not specified in the performance specifications, it must be within limits in or- der to provide accurate calibration.

  • Page 26: Ac Cal Output Test

    HP 16532A - Performance Tests 3-7. AC CAL OUTPUT Test The AC CAL OUTPUT port on the rear panel is used for instrument calibration and probe compensation. Though calibrator accuracy is not specified in the performance specifications, it must be within limits in or- der to provide accurate calibration.

  • Page 27: Input Resistance

    HP 16532A - Performance Tests 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 ± 1% Equipment Required: The following equipment is required for the test.
  • Page 28 HP 16532A - Performance Tests 4. Select RUN - SINGLE. The clicking of attenuator relays should be audible. Verify resistance read- ings on the digital multimeter of 50 Ω ± 0.5 Ω (49.5 to 50.5 Ω). 5. In the Channel menu change the Coupling field to 1 MΩ/DC.

  • Page 29: Voltage Measurement Accuracy

    HP 16532A - Performance Tests 3-9. VOLTAGE MEASUREMENT ACCURACY This test verifies the DC voltage measurement accuracy of the instrument. This procedure uses a dual cur- sor measurement that nullifies offset error, resulting in the following measurement: ± [(1.5% of full scale) + (0.016 x V/div)].
  • Page 30 HP 16532A - Performance Tests Procedure: 1. Using a BNC adapter, connect one end of the cable to the power supply. Connect the BNC tee, the blocking capacitor, and the shorting endcap to the other end of the cable. Refer to figure 3-1.
  • Page 31 HP 16532A - Performance Tests Use the following table for steps 3 through 9. V/Div Offset Supply Upper Limit Lower Limit 4 V/Div -7.0 V -14.0 V -13.7 V -14.3 V 1 V/Div -1.75 V -3.50 V -3.43 V -3.57 V 400 mV/Div -700.0 mV...

  • Page 32: Offset Accuracy

    HP 16532A - Performance Tests 3-10. OFFSET ACCURACY This test verifies the offset accuracy. Specification: ± (1.0% of channel offset + 2.0% of full scale) Equipment Required: The following equipment is required for the test. Procedures are based on the model or part numbers rec- ommended.
  • Page 33 HP 16532A - Performance Tests 3. Select RUN - REPETITIVE. Wait approximately 15 seconds (averaging complete), then select STOP. The display should read 0.00 V ± 320.0 mV as read from the markers voltage field. Record the reading in the performance test record.

  • Page 34: Bandwidth

    HP 16532A - Performance Tests 3-11. BANDWIDTH This test checks the bandwidth of the oscilloscope module. Specification: Bandwidth (dc coupled) dc to 250 MHz Equipment Required: The following equipment is required for this test. Procedures are based on the model or part number rec- ommended.
  • Page 35 HP 16532A - Performance Tests 4. Set the signal generator for 1MHz at − 2.4 dBm. On the oscilloscope, select RUN - REPETITIVE. The signal on the screen should be two cycles at three divisions amplitude. 5. After the measurement settles (averaging complete, about 15 seconds), select STOP. In the Auto-Measure menu note the V reading.

  • Page 36: Time Measurement Accuracy

    HP 16532A - Performance Tests 3-12. TIME MEASUREMENT ACCURACY This test uses a precise frequency source to check the accuracy of time measurement functions. Specification: ± [(0.005% x ∆t) + (2 x 10 − x delay setting) + 150 ps] Equipment Required: The following equipment is required for this test.
  • Page 37 HP 16532A - Performance Tests 4. Select the Markers Auto menu, and set the following parameters: Menu Selection Setting Markers X→ Set on chan 1 Auto at Level 50% Slope Positive Occur 1 O→ Set on chan 1 at Level 50%...

  • Page 38: Trigger Sensitivity

    HP 16532A - Performance Tests 3-13. TRIGGER SENSITIVITY This test checks channel triggers for sensitivity at rated bandwidth. Specification: dc to 50 MHz : 0.063 x full scale (0.25 division) 50 to 250 MHz : 0.125 x full scale (0.5 division) Equipment Required: The following equipment is required for this test.
  • Page 39 HP 16532A - Performance Tests 3. Set the signal generator for a 50 MHz and 35 mV rms signal. On the oscilloscope module select RUN - REPETITIVE. 4. In the Auto-Measure menu read V . Adjust the signal generator output level so that the signal is close to and not more than 100 mV 5.
  • Page 40 HP 16532A - Performance Tests Table 3-1. Performance Test Record Hewlett-Packard Tested by ______________________________ Model 16532A Oscilloscope Module Recommended Performance Work Order No. _________________________ Serial No.: Verification Interval: ____________________ Months Date Tested ____________________________ Paragraph No. Test Results DC CAL OUTPUT...
  • Page 41 HP 16532A - Performance Tests Table 3-1. Performance Test Record (Continued) Paragraph No. Test Results Voltage Measurement Accuracy Channel 2 (continued) Zero Input Measured Actual Upper Limit Lower Limit -13.7V -14.3V __________ __________ __________V -3.43V -3.57V __________ __________ __________V -1.37V -1.43V...
  • Page 42 HP 16532A - Performance Tests Table 3-1. Performance Test Record (Continued) Paragraph No. Test Results 3-12 Time Measurement Accuracy MEAN X-O __________ns ± 5.500ns 150ps MIN X-O __________ns MEAN X-O - MIN X-O = _________ps MAX X-O __________ns MAX X-O - MEAN X-O = _________ps ±...
  • Page 43 TABLE OF CONTENTS Calibration 4-1. Introduction..........................4-1 4-2. Safety Requirements......................4-1 4-3. Calibration Interval.......................4-1 4-4. Maintaining System Integrity ....................4-1 4-5. Calibration Protection 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.

  • Page 44: Calibration

    Each HP 16532A board stores the calibration calibration is required if one of the following factors for that board in non-volatile RAM on the occurs: board itself. The HP 16532A board contains a calibration protection (PROTECT/UNPROTECT) • Oscilloscope module is installed, repaired, or switch.

  • Page 45: Recommended Test Equipment

    UNPROTECT position. When you have more modules are calibrated at Hewlett-Packard as than one HP 16532A board in a mainframe, this single units (not chained together). If you need to must be done for each one of the boards. After...

  • Page 46: Setting The Protect/Unprotect Switch To Unprotect

    HP 16532A - Calibration 4-9. Setting the PROTECT/UNPROTECT Switch to UNPROTECT The effects of ELECTROSTATIC DISCHARGE can damage electronic compo- nents. Use grounded wrist straps and mats when you are performing any kind of service on this module. The oscilloscope board contains a calibration PROTECT/UNPROTECT switch. This switch must be set to UNPROTECT before calibration can be done.

  • Page 47: Equipment Required For Calibration

    HP 16532A - Calibration 4-10. Equipment Required for Calibration The equipment listed below is required for calibration: Cable (2) 50Ω BNC, 9-inch (equal length) HP 10502A Cable 50Ω BNC - SMB HP 16532-61601 Adapter 50Ω BNC tee (m)(f)(f) HP 1250-0781 Adapter 50Ω...

  • Page 48: Self Cal Menu Calibrations

    HP 16532A - Calibration 4-12. Self Cal Menu Calibrations Note After you touch the Start field, you can abort the calibration procedure either by touching the Cancel field, if it is available in the menu, or by touching either the Mode or Procedure fields if the continue field is still displayed on the screen.
  • Page 49 HP 16532A - Calibration 3. Touch the Channel field, then select S1 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.
  • Page 50 HP 16532A - Calibration Calibrate the Ext Trig Null of the Self Cal menu as follows: 1. Connect the cables, BNC adapter, and BNC tee adapter together as shown in figure 4-4. 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.

  • Page 51: Setting The Protect/Unprotect Switch To Protect

    HP 16532A - Calibration Figure 4-5. End of Calibration Display 4-13. Setting the PROTECT/UNPROTECT Switch to PROTECT The effects of ELECTROSTATIC DISCHARGE can damage electronic compo- nents. Use grounded wrist straps and mats when you are performing any kind of service on this module.
  • 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: Replaceable Parts

    • Hewlett-Packard part number. assembly. • Total quantity. This section contains parts and ordering information for the HP 16532A Oscilloscope • Description of part. Module. Table 5-1 lists the reference designator and abbreviations used throughout this manual. • Check digit.

  • Page 54: Direct Mail Order System

    HP 16532A - Replaceable Parts • Exchange assemblies are listed in a separate No maximum or minimum on any mail order section in the replaceable parts table. They have a (there is a minimum order for parts ordered part number in the form XXXXX-695XX (where the through local Hewlett-Packard offices when new parts would be XXXXX-665XX).
  • Page 55 HP 16532A - Replaceable Parts Table 5-1. Reference Designator and Abbreviations REFERENCE DESIGNATOR = assembly = fuse = transistor;SCR; = integrated circuit; = fan;motor = filter triode thyristor microcircuit = battery = hardware = resistor = electron tube; glow = capacitor...
  • Page 56 HP 16532A - Replaceable Parts Figure 5-1. Parts Identification...
  • Page 57 HP 16532A - Replaceable Parts Table 5-2. Replaceable Parts List Reference HP Part C Qty Description Mfr Part Designator Number Code Number 16532-69501 Board Exchange Assembly (does not include attenuator assemblies) 16532-66501 Board Assembly (does not include attenuator assemblies) 16532-63401...
  • Page 58 TABLE OF CONTENTS 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. Attenuator Theory of Operation ..................6-1 6-6. Main Assembly Theory of Operation .................. 6-1 6-7.

  • Page 59: Service

    The channels are identical. The external trigger (ECL) input cannot be The HP 16532A Oscilloscope Module is contained displayed. Trigger signals from each channel and on one board. It runs at a 1 GSa/s digitizing rate,...
  • Page 60 HP 16532A - Service Figure 6-1. HP 16532A Oscilloscope Block Diagram phase detector provide the sample clock for higher FISO Memory. 8000 samples of the FISO (fast in, sample rates. After conditioning and sampling, the slow out) memory are used per measurement per signals are digitized, then stored in a hybrid IC channel.
  • Page 61 HP 16532A - Service When the countdown reaches zero, the sample Triggering. There are two main trigger circuits that trigger four trigger sources. The two trigger clocks are stopped and the CPU is signaled that circuits are the analog trigger and the logic trigger.

  • Page 62: Self-Tests

    If there are multiple oscilloscope modules, the user must select the specific oscilloscope module to be tested at the main test system menu. Multiple HP 16532A modules that are connected as one unit are rec- 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.
  • Page 63 HP 16532A - Service 3. Install the Composite PV Test software disk in the inactive disk drive. 4. Touch the box labeled Touch box to Load Test System. See figure 6-3. Note When the self-test software is loaded, the user operating system is overwritten in the mainframe system RAM.
  • Page 64 HP 16532A - Service Figure 6-5 shows the selection menu for choosing to perform functional tests. The status of the functional tests is given. Figure 6-5. Functional Tests Screen 6. Touch the Functional Tests field. Figure 6-6 is the main self-test menu. Self-tests can be either run individually by touching a specific test field, or run automatically through all tests one time by touching the All Tests field.
  • Page 65 HP 16532A - Service 7. Touch the A/D Test field. The individual test run screens, see figure 6-7, give the test name, a brief description of the test, number of test runs, and the number of test failures. Figure 6-7. A/D Test Run Screen 8.
  • Page 66 HP 16532A - Service 10. Touch Done to exit the A/D test. 11. To exit the self 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.
  • Page 67 HP 16532A - Service Self-Test Descriptions The following self-tests check the major components of the HP 16532A oscilloscope module as well as all associated circuitry. When the self-tests have all been completed with a "PASS" status, the major data and control pipelines in the HP 16532A oscilloscope module are functioning properly.

  • Page 68: Troubleshooting

    HP 16532A - Service 6-8. Troubleshooting The troubleshooting flow chart given in figure 6-10 will isolate module failures to card level only. It is not intended for component level troubleshooting. If self-tests indicate a failure, begin at the Start of the trou- bleshooting flow chart.
  • Page 69 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.
  • Page 70 Level Slope 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.
  • Page 71 HP 16532A - Service Troubleshooting Sheet 1 Figure 6-10. Troubleshooting Flowchart 6-13...
  • Page 72 HP 16532A - Service Troubleshooting Sheet 2 Figure 6-10. Troubleshooting Flowchart 6-14...
  • Page 73 HP 16532A - Service Troubleshooting Sheet 3 Figure 6-10. Troubleshooting Flowchart 6-15...
  • Page 74 HP 16532A - Service Troubleshooting Sheet 4 Figure 6-10. Troubleshooting Flowchart 6-16...
  • Page 75 HP 16532A - Service Troubleshooting Sheet 5 Figure 6-10. Troubleshooting Flowchart 6-17...

  • Page 76: Oscilloscope Module Removal And Replacement

    HP 16532A - Service 6-9. Oscilloscope Module Removal and Replacement The effects of ELECTROSTATIC DISCHARGE can damage electronic compo- nents. Use grounded wrist straps and mats when you are performing any kind of service on this module. When you need to remove and replace a module, test the module first to determine the faulty part. If either of the trigger cables are faulty, remove the faulty cable and replace it with a new one.
  • Page 77 HP 16532A - Service 5. If a trigger cable was determined to be faulty, replace the faulty trigger cable on the oscilloscope module (refer to paragraph 6-10). Otherwise, skip to step 6. 6. If an attenuator was determined to be faulty, replace the faulty attenuator on the oscilloscope mod- ule (refer to paragraph 6-11).

  • Page 78: Trigger Cable Removal And Replacement

    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.

  • Page 79: Attenuator Removal And Replacement

    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 four hex nuts (H3) from the BNC connectors on the rear panel (MP1). See figure 6-13.
  • Page 80 HP 16532A - Service Attenuator Replacement Procedure: a. Gently push the attenuator assembly (A2) straight down on the board assembly (A1) being careful not to damage the connector and the components beneath the attenuator assembly. See figure 6-13. b. Attach the attenuator assembly (A2) to the board assembly (A1) with the two attenuator retainer screws (H7).

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