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HP 8081A Operating And Service Manual

300mhz rate generator module
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HP References in this Manual
This manual may contain references to HP or Hewlett-Packard. Please note that
Hewlett-Packard's former test and measurement, semiconductor products and
chemical analysis businesses are now part of Agilent Technologies. We have
made no changes to this manual copy. In other documentation, to reduce
potential confusion, the only change to product numbers and names has been in
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current name/number is now Agilent XXXX. For example, model number
HP8648A is now model number Agilent 8648A.

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  Summary of Contents for HP 8081A

  • Page 1 Agilent Test & Measurement website, www.tm.agilent.com. HP References in this Manual This manual may contain references to HP or Hewlett-Packard. Please note that Hewlett-Packard's former test and measurement, semiconductor products and chemical analysis businesses are now part of Agilent Technologies. We have made no changes to this manual copy.
  • Page 2 Flio- HEWLETT PACKARD OPERATING AND SERVICE MANUAL 300MHz RATE GENERATOR MODULE S08iA PART OF THE 8080 HIGH FREQUENCY PULSE GENERATOR SYSTEM SERIAL NUMBERS This manual applies directly to instrument serial number 1604G 00101 For instruments with lower serial numbers, refer to the backdating information in Section 8 of this module manual.
  • Page 3 CERTIFICATION The Hewlett-Packard Company certifies that this instrument was thoroughly tested and inspected and found to meet its published specifications when it was shipped from the factory. The Hewlett-Packard Company further certifies that its calibration measurements are traceable to the U.S. National Bureau of Standards to the extent allowed by the Bureau'$ calibration facilities, or to the calibration facilities of other International Standards Organization mem bers.
  • Page 4: Table Of Contents

    - - - - - - - - - - - - - - - - - - - - - - - - - - - List of Contents/Tables/Illustrations CONTENTS Page Section 5 Adjustments Section 1 General Information Introduction Safety Considerations Introductio n Test Equipment Required...
  • Page 5 List of Illustrations/Schematic Diagrams ILLUSTRATIONS Page Figure Repetition Rate Test Setup Trigger Output Test Setup External Trigger Mode (Slow) Test Setup External Gate Mode (Slow) Test Setup Manual Function Test Setup External Trigger Mode (Fast) Test Setup External Gate Mode (Fast) Test Setup. 4-5 Duty Cycle Adjustment Test Setup Frequency Adjustment Test Setup 8081 A Replaceable Parts ..
  • Page 6: A 300 Mhz Rate Generator Module And Supplied Accessories

    SCREWS CABLE 808TA Figure 1-1. 8081 A 300 MHz Rate Generator Module and Suppl ied Accessories.
  • Page 7: General Information

    DESCRIPTION The Model 8081 A is a Safety Class 1 instru- 1-12 The Model 8081A is a 0-300 MHz Rate ment (it has an exposed metal chassis that is connected Generator module designed to provide a clock source for to earth via the 8080A system mainframe). This instru- another 8080 system module.
  • Page 8: Options

    1 MHz bandwidth; HP 182C with Performance Tests up to 1 V/div sensitivity; HP 1804A and HP 1821 A plug-ins up to 10 Ils/d iv sweep speed; four input channels Oscillator up to 10KHz frequency; HP 651 B Performance Tests up to 1 V RMS amplitude;...
  • Page 9 Model 8081A - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1 - 3 Table 1-2. Specifications TIMING...
  • Page 10: Installation

    Packard office. Keep the shipping materials for carrier's 7. Replace the BOBOA mainframe top cover. inspection. The HP office will arrange for repair or repla- cement without waiting for claim settlement. B. Replace the two feet on the rear of the 8080A mainframe.
  • Page 11 2-12 If the instrument is to be shipped to a 3. Use enough shock-absorbing material (3 to 4 inch layer) around all sides of instru- Hewlett-Packard Sales/Service Office, attach a tag show- ing owner, return address, model number and full serial ment to provide firm cushion and prevent number and the type of service required.
  • Page 12 RATE VERNIER -"'1:--- • - - N H I . - -k.ti::r- 300-100-10'" • -100-10 - 1 -100 - 10 . 3 3 - 10 • 1 - 1· 10 - , - 1 10-\00 _iii_iii 'f)(T tNPU1 l.fVEL PERIOD /::'~ GATE NORM TRIG...
  • Page 13: Operation

    SECTION 3 ' - - - - - - - - - - - - - - - - - - - - - - - - - - - - - OPERATION 3-12 INTRODUCTION Initial Control Settings This operating section explains the function SOSl of the controls and connectors and describes the opera- tors checks and typical operati ng modes of the 8081 A...
  • Page 14: Suggested Equipment Setup For Operating Instructions

    8080A MAINFRAME RATE VERN1£R ,--MH.-- - k H : r - - H l - 300-100-10 - 1 -100-10 - 1 -100 ... 10 ascI LLOSCOPE - IU - I - • - I1J - , . iL'.l'J 11)- WITH 1 GHz P 'RIOI>...
  • Page 15: Operating Instructions

    Set the LINE switch on the 8080A Main- is required. The test set is as shown in figure 3-3. The frame to ON. changes in control settings are as follows. 3-24 Initial Control Settings 8081A: 8081A Mode switch TRIG RATE range switch 1 MHz-100 KHz NEG-POS·MAN switch...
  • Page 16: External Gate Mode

    ® 3-31 Vary the EXT INPUT LEVEL switch This gate signa I can come from either an external source note that the trigger output disappears when the thre- via the EXT INPUT connector or locally using the ®. shold level reaches approximately +0.2V. Set the exter- MAN pushbutton When the gate signal switches on, nal input level to -1 V.
  • Page 17: Performance Tests

    Set up the equipment as shown in figure 4-1 and EQUIPMENT REQUI RED set the controls as follows: Equipment required for the performance 8081A: tests is listed in the Recommended Test Equipment table in section 1. Any equipment that satisfies the critical RATE range...
  • Page 18: Trigger Output Test

    The repetition rate output is controlled externally. The trigger and internal outputs are pulse-shaped versions of EQUIPMENT the trigger input. Sampling oscilloscope HP 182C Mainframe with 1810A plug-in DESCRIPTION The function of the Model 8081 A is tested in external PROCEDURE trigger mode using an external sinewave generator to apply a trigger signal of 10KHz.
  • Page 19: External Gate Mode (Slow) Test

    OUTPUT i*-- EQUIPMENT Propagation delay 8081A OUTPUT Oscillator , HP 651 B Real Time Oscilloscope HP 182C Mainframe with 1804A and 1821 A plug-ins. 50 Ohm Feedthru Termination HP 10100C Turn EXT INPUT LEVEL control from positive to negative and observe waveforms.
  • Page 20: Manual Function Test

    Figure 4-5. Manual Function Test Setup tor output a pulse burst appears. EQUIPMENT Threshold level Real Time Oscilloscope HP 182C Mainframe with 1804A and 1821 A plug-ins OSCILLATOR OUTPUT PROCEDURE Set up the equipment as shown in figure 4-5 and...
  • Page 21: External Trigger Mode (Fast) Test

    150MHz. EQUIPMENT Pulse Generator HP 8082A SAr,.lPLIfIlG Sampling Oscilloscope HP 182C with 181 OA OSCII,.LOSCOPE plug-in PROCEDURE Set up the equ ipment as shown in figure 4-6 and set the controls as follows: Figure 4-7.
  • Page 22 Oscilloscope: Pulse Generator: Sensitivity 200mV/div Repetition rate 150MHz Trigger external Pulse width square wave Timebase mode , .. expanded Amplitude 0.2 V Timebase - direct 20ns/div Polarity ......•.. positive Timebase - expanded 5ns/div 8081 A: Adjust the EXT INPUT LEVE L control for a stable 150 MHz pulse presentation on the display.
  • Page 23: Performance Test Record

    Table 4-1 Performance Test Record Hewlett-Packard Tested by Model 8081 A Date 300MHz Repetition Rate Generator Serial No. Results Paragraph Test Number Actual Repetition Rate 10Hz to 300MHz <10HZ > 300M Hz Trigger Output Trigger Output Pulse: -.6V ± 50mV -0.55V -O.65V to OV ±...
  • Page 24: Adjustments

    , - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - S E C T I O N 5 ' - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A D J U S T M E N T S INTRODUCTION Make sure that only fuses with the required...
  • Page 25: Duty Cycle And Frequency Adjustments

    An oscilloscope is used to check the duty cycle and a counter to check the frequency. SAMPLING OSCILLOSCOPE c::::J R109 8081A 8OS0A MAINfRAME 80SlA S080A MA~NFRAME COUNTE.A / , / Figure 5-1. Duty Cycle Adjustment Test Setup EQUIPMENT Figure 5-2.
  • Page 26 8081A: Oscilloscope: RATE range 300-100MHz Sensitivity 200mV/div Rate VERNIER Trigger internal Operating Mode GATE EXT Sweep Mode expanded Input Polarity Timebase - main 20ns/div EXT INPUT LEVEL approx +0.5V Timebase - expanded 0.5ns/div Adjust A2 R109 for a duty cycle of .. 50 ±...
  • Page 27: Replaceable Parts

    , - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - SECTION 6 ' - - - - - - - - - - - - - - - - - - - - - - - - - - - R E P L A C E A B L E PARTS INTRODUCTION The information given for each part consists of the following:...
  • Page 28 6 - 4 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - FRONT PANEL (MP5) FRONT PANEL (INSIDE) R' O...
  • Page 29: Replaceable Parts

    - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6 - 5 Table 6-2. Replaceable Parts ~8D~l...
  • Page 30 6 - 6 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ' - - - - - - - - - Table 6-2.
  • Page 31: Recommended Test Equipment

    This section contains the component layouts battery transistor and schematic diagrams for the Model 8081A Rep. Rate = capacitor = resistor Generator. Tables listing the reference designators and coupler thermistor schematic symbols used are also given. Refer to section 6...
  • Page 32: Schematic Diagram Symbols

    7-2 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Table Schematic Diagram Symbols The following symbols conform, as far as possible, with ANSI Y32.2, IEEE...
  • Page 33 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 7 - 3 Spring return, 2-position transfer switch. Triangles (A-) '!re used for the contacts to indicate a non-locking type switch.
  • Page 34 7 - 4 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Terminals and Connecton Soldered connection. Example of fixed male and female connectors with ego P.
  • Page 35 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 7 - 5 Complex functions represented by rectangu lar box. Letters can be used inside the rectangle to clarify the function.
  • Page 36 7 - 6 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Schematic Signal number --..,~ Schematic number' These references on a signal These references on a signat leaving a schematic diagram entering a SChematic...
  • Page 37 7-8 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - FRONT PANEL (INSIDE) A1Wl A1W2 r} ••••• :' A1J3 ·1 L!..
  • Page 38: Control Board A1

    - - 7 - 9 ~~N~~~ BOARD ~~~i~-ARJ-~~-E-BOARDI: (~N177--k-<O:-~-_<;>_._y_I (08081- 66502) -10V J--~'-~+til~l -.-1: [II - (OBOB1- 66502) L.__ - - - - INPUT -'OV 5K LEVEL -lOV MAN. PUSHBUTTON -10V oNlels}~ A1 CONTROL BOARD (08081 - 66501) - - - - CONTROL BOARD A1...
  • Page 39: 300Mhz Rate Generator Board A2

    7 - 1 0 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 300MHz RATE GENERATOR BOARD A2 08081-66502 FREQUENCY PGM...
  • Page 40 7-11 A2 300 MHz RATE GENERATOR BOARD 108081-665021 ' . " fl." Jl!l UIDO'-; lR?6 )llK ." >K -S.2\1 ~;"~ R 20 .alp" ~u" 8EAQ 38EAO ; [B 36[f.!., 8EAO e19n,s, rpll (20 n U S l llioK R31. l)S20K '''' .n""...
  • Page 41 7 - 1 2 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - MAINFRAME MOTHERBOARD (POWER SUPPLY &...