Download Keysight Agilent HP 8081A Datsheet
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About this Manual We’ve added this manual to the Agilent website in an effort to help you support your product. This manual is the best copy we could find; it may be incomplete or contain dated information. If we find a more recent copy in the future, we will add it to the Agilent website. Support for Your Product Agilent no longer sells this product. Our service centers may be able to perform calibration and repair if necessary, but no other support from Agilent is available. You will find any other available product information on the 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. In other documentation, to reduce potential confusion, the only change to product numbers and names has been in the company name prefix: where a product number/name was HP XXXX the current name/number is now Agilent XXXX. For example, model number HP8648A is now model number Agilent 8648A. Flio- HEWLETT a:~ 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. For instruments with higher serial numbers, refer to the Manual Change sheets at the end of this module manual. 0265 COPYRIGHT HEWLETT·PACKARD GMBH 1975 ' - - - - - - - - - - - - 703 BOBLINGEN, HERRENBERGER STR. 110, WEST GERMANY. MANUAL PART NO. 08081-90001 MICROFICHE PART NO. 08081-90501 --.J Printed in West Germany 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. WARRANTY AND ASSISTANCE This Hewlett-Packard product is warranted against defects in materials and workmanship. This warranty applies for one year from the date of delivpry. Hewlett-Packard will repair or replace products which prove to be defpctiVl' during the warranty period provided they are returned to Hewlett-Packard. No otht-'r warranty is expn'sspd or implied. We are not liahle for consequential damages. Service contracts or clistonwr assistancl' agrel'nwnls are availabk for Ih'wlt:'tt -Packard producl.'i thal require maintenance a.nd repair on -sitl'. For any assislann" conlat'l your nearpst Hewlelt-Packard Sales and Service Offiee. Addresses are provided at the back of this manual. - - - - - - - - - - - - - - - - - - - - - - - - - - - List of Contents/Tables/Illustrations CONTENTS Page Section 1 1-1 1-4 1-6 1-9 1-11 1-14 1-16 1-18 1-20 Section 2 2-1 2-3 2-5 2-6 2-8 2-10 Section 3 3-1 3-3 3-5 3-7 3-9 3-12 3-21 3-24 3-26 .3-28 3-36 3-40 General Information 1-1 Introductio n 1-1 Specifications 1-1 Safety Considerations 1-1 Instruments Covered By Manual 1-1 Description 1-1 Options 1-2 Equipment Required But Not Supplied . 1-2 Equ ipment Available 1-2 Recommended Test Equipment 1-2 Installation 2-1 Introduction Initial Inspection Preparation For Use Installation in 8080A Mainframe Operating Environment. Storage and Shipment 2-1 2-1 2-1 2-1 2-1 2-1 Operation 3-1 Introduction Panel Features Operator's Checks Operating Instructions Operator's Checks I nitial Control Settings Operating Instructions Initial Control Settings Normal Mode Trigger Mode External Gate Mode Internal Gate Mode 3-1 3-1 3-1 3-1 3-1 3-1 3-3 3-3 3-3 3-3 3-4 3-4 Section 5 5-1 5-3 5-9 5-11 5-13 5-15 5-18 Section 6 6-1 6-3 6-5 6-8 Section 7 7-1 7-3 Adjustments 5-1 Introduction Safety Considerations Test Equipment Required Alignment Tool Performance Checks Related Adjustments Duty Cycle and Frequency Adjustments. 5-1 5-1 5-1 5-1 5-1 5-1 5-2 Replaceable Parts 6-1 Introduction Abbreviations Replaceable Parts Ordering Information 6-1 6-1 6-1 6-1 Service 7-1 Introduction Recommended Test Equipment 7-1 7-1 TABLES Page Table 1-1 1-2 4-1 6-1 6-2 7-1 7-2 Recommended Test Equipment Specifications Performance Test Record Abbreviations for Replaceable Parts List Replaceable Parts Reference Designators Schematic Diagram Symbols Performance Tests 4-1 Introduction Equipment Required Test Record Repetition Rate Test Trigger Output Test External Trigger Mode (Slow) Test External Gate Mode (Slow) Test Manual Function Test External Trigger Mode (Fast) Test External Gate Mode (Fast) Test 4-1 4-1 4-1 4-1 4-2 4-2 4-3 4-4 4-5 4-5 1-1 4-1 4-3 4-5 4-7 4-8 4-9 4-10 4-11 4-12 4-13 6-2 6-5 7-1 7-2 ILLUSTRATIONS Page Figure Section 4 1-2 1-3 4-7 1-2 3-1 3-2 3-3 3-4 3-5 8081 A 300 MHz Rate Generator Module and Supplied Accessories Serial Number Plate 8081 A Controls and Connectors Test Set for Operator's Checks Suggested Equipment Setup for Operating Instructions Rate Generator Output in Trigger Mode Rate Generator Output in External Gate Mode 1-0 1-1 3-0 3-2 3-2 3-3 3-4 List of Illustrations/Schematic Diagrams ILLUSTRATIONS Page Figure 4-1 4-2 4-3 4-4 4-5 4-6 4-7 5-1 5-2 6-1 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. Duty Cycle Adjustment Test Setup Frequency Adjustment Test Setup 8081 A Replaceable Parts .. , 4-1 4-2 4-2 4-3 4-4 4-5 4-5 5-2 5-2 6-4 SCHEMATIC DIAGRAMS Diagram 1 2 3 Page Control Board A1 300 MHz Rate Generator Board A2 Distribution Board A3 7-9 7-11 7-12 SCREWS CABLE 808TA Figure 1-1. 8081 A 300 MHz Rate Generator Module and Suppl ied Accessories. ,-------------------------------SECTION 1 "--~---------------------- 1-1 INTRODUCTION 1-2 This Operating and Service manual contains information required to install, operate, test, adjust and service the Hewlett-Packard Model 8081 A 300 MHz Rate Generator module. Figure 1-1 shows the module and accessories supplied. This section covers instrument identification, description, accessories, specifications, and other basic information. 1-3 A microfiche version of this manual is available on 4 x 6 inch microfilm transparencies (order number on title page). Each microfiche contains up to 60 photo-duplicates of the manual pages. The microfiche package also includes the latest Manual Changes supplement as well as all pertinent Service Notes. 1-4 GENERAL INFORMATION is a significant change to the instrument. The last five digits are assigned to instruments sequentially. The contents of this manual apply directly to the instrument serial number quoted on the title page. For instruments with lower serial numbers, refer to the backdating information in Section 8 of this module manual. For instruments with higher serial numbers, refer to the Manual Change sheets at the end of this module manual. In addition to change information, the Manual Change sheets may contain information for correcting errors in the manual. To keep this manual as up-to-date and accurate as possible, Hewlett-Packard recommends that you periodically request the latest Manual Change supplement. The supplement for this manual is identified with this manual's print date and part number, both of which appear on this module manual's title page. Complimentary copies of the supplement are available from Hewlett-Packard. SPECIFICATIONS HEWLETT - PACKARD GmbH [1536G00062 ] 1-5 I nstrument specifications are listed in table 1-2. These specifications are the performance standard or limits against which the instrument is tested. BOBLINGEN .. Figure 1-1. Serial Number Plate 1-6 SAFETY CONSIDERATIONS 1-7 The Model 8081 A is a Safety Class 1 instrument (it has an exposed metal chassis that is connected to earth via the 8080A system mainframe). This instrument has been designed according to international safety standards and has been supplied in a safe condition. 1-8 This operating and service manual contains information, cautions and warnings which must be followed by the user to ensure safe operation and to maintain the instrument in a safe condition. 1-9 INSTRUMENTS COVERED BY MANUAL 1-10 Attached to the inside of the instrument side frame is a serial number plate (figu re 1-1). The first four digits of the serial nu mber 0 nly change when there 1-11 DESCRIPTION 1-12 The Model 8081A is a 0-300 MHz Rate Generator module designed to provide a clock source for another 8080 system module. The 8081 A has four operating modes: Normal Trigger External Gate Internal Gate In Normal mode, the rate generator is free-running at the repetition rate selected by the rate controls. In Trigger mode, the rate generator is bypassed and the pu Ise output is merely a shaped version of a pulse input from either an external sou rce or a manual pushbutton. In External Gate Mode, the rate generator output is gated by a gate pulse from an external source or a manual pushbutton. Internal Gate mode can only be useed with an 8084A Word Generator module. The trigger slope polarity and threshold level of external gate/trigger inputs is adjustable. Mainframe is required. The 8080A mainframe provides housing and power supplies for the 8081 A. 1-13 The power supplies for the 8081 A are provided by the 8080A Mainframe. 1-19 The 8081 A is one of a complete range of rep. rate, timing and output modules that form the 8080 high frequency pulse generator system. Repetition rates range from 0-1 GHz and the modules are interchangeabl e to enable you to purchase a system exactly tailored to your requirements. 1-14 OPTIONS 1-15 The only option for the 8081 A Rate Generator is a second copy of the operating and service manual which can be obtained by ordering option 910. 1-16 EQUIPMENT REQUIRED BUT NOT SUPPLIED 1-17 To operate the 8081 A module, an 8080A 1-18 1-20 EQUIPMENT AVAILABLE RECOMMENDED TEST EQUIPMENT 1-21 Equipment required to maintain the 8081 A is listed in Table 1-1. Other equipment can be substituted if it meets or exceeds the critical specifications I isted in the table. Table 1-1. Recom me nded Test Equ ipment Instrument Critical Specification Mainframe Recommended Model Used in HP 8080A Performance Tests, Adjustments Electronic Counter up to 350 MHz frequency HP 5345A Performance Tests, Adjustments Sampling Oscilloscope > 300 MHz bandwidth; HP 182C with HP 1810A plug-in Performance Tests, Adjustments up to 200 mV/div sensitivity; up to 0.5 ns/div sweep speed; 50 ohm input impedance Real Time Oscilloscope up to 1 MHz bandwidth; up to 1 V/div sensitivity; up to 10 Ils/d iv sweep speed; four input channels HP 182C with HP 1804A and HP 1821 A plug-ins Performance Tests Oscillator up to 10KHz frequency; up to 1 V RMS amplitude; 50 ohm output impedance HP 651 B Performance Tests Pulse Generator up to 250 MHz frequency; 2 ns pulse width; 0.5 V amplitude; positive-polarity; 50 ohm output impedance; square wave facility. HP 8082A Performance Tests 50 ohm Feedthrough Termination HP 10100C Performance Tests 50 ohm Tee Connector HP 1250-0781 Performance Tests Model 8081A - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1 - 3 Table 1-2. Specifications TIMING Repetition rate: 10 Hz to 300 MHz in 8 ranges Period jitter: ~ 0.1 % ± 50 psec EXTERNAL INPUTS Repetition rate: Trigger mode: Gate mode: Input impedance: Trigger level: Sensitivity: Slope: Max. input voltage: o to 300 MHz, pulse width;;;' 1,7 ns gate on duration> 1 period of int rep rate, gate off duration> 1 period + 10 ns 50 n typical -lV to + 1 V 200 mV p-p neg/pas selectable ±6V INTERNAL GATE INPUT Gate duration: Input impedance: Amplitude: High level: Max input voltage: on> 10 ns, off> 20 ns 50 n typical ~ 500 mV p-p OV±100mV ±lV EXTERNAL TRIGGER OUTPUT Amplitude: High level: Duty cycle: Output impedance: Transition time (10% to 90%): Max. external voltage: ~ 500 mV p-p OV ± 100 mV 50% ± 10% 50 ~ n typical 1.2 ns ±2V INTERNAL OUTPUT Fan-out*: Amplitude: High level: Duty cycle: Output impedance: Transition time (10% to 90%): Max. external voltage: 1 ~ 500 mV p-p OV ± 100 mV 50% ± 10% 50 ~ n typical 1.2 ns ±2V OPERATING MODES Norm: External trigger: External gate: Internal gate: Manual: OPTION 910 SIZE Repetition rate is determined by front panel controls. Repetition rate is controlled externally. Shaped input signal is output at both internal and external trigger outputs. Gate signal turns repetition rate generator on synchronously. External input is disconnected. Generator is gated through internal gate input. All external functions can be triggered manually by pressing a pushbutton. Add itional instrument operating and service manual. Quarter mainframe width * Fan-out: max. number of 8080 system modules which can be driven UPDATE A NOV 76 . - - - - - - - - - - - - - - - - - - - - - - - - - - - - - SECTION 2 INSTALLATION 2-1 INTRODUCTION 2. Remove the upper two feet from the rear of the BOBOA mainframe. 2-2 This section provides installation instructions for the Model BOB1 A 300 MHz Rate Generator module. It also includes information about initial inspection and damage claims, preparation for use, and packaging, storage and shipment. 2-3 3. Remove the 80BOA mainframe top cover. 4. Insert the BOB1 A in the required position in the BOBOA mainframe (there are no electrical limitations on the position). INITIAL INSPECTION 2-4 Inspect the shipping container for damage. If the container or cushioning material is damaged, it should be kept until the contents of the shipment have been checked for completeness and the instrument has been checked mechanically and electrically. The contents of the shipment shou Id be as shown in Figure 1-1. Procedures for checking the electrical operation are given in Section 3. If the contents are incomplete, if there is mechanical damage or defects, or if the 8081 A does not pass the operator's checks, notify the nearest Hewlen-Packard Sales/Service office. If the shipping container is damaged, or the cushioning material shows signs of stress, notify the carrier as well as the HewlettPackard office. Keep the shipping materials for carrier's inspection. The HP office will arrange for repair or replacement without waiting for claim settlement. 2-5 PREPARATION FOR USE 2-6 Installation in 8080A Mainframe 5. Secure the 80B1 A to the 8080A mainframe using the two screws provided. 6. Connect the internal coaxial cable from the 8081 A to the word generator, delay, output amplifier modules or to remote equipment as required. Connections are Internal Output and Internal Gate. A connecting cable for the I nternal Output is supplied. 7. Replace the BOBOA mainframe top cover. B. Replace the two feet on the rear of the 8080A mainframe. 2-8 Operating Environment ICAUTION] The following installation procedure must only be carried out by qual ified service personnel. 2-9 The 8081 A will operate within specifications when the ambient temperature is between OOC and 55 0 C. 2-7 To operate the BOB1 A, it must first be installed in an BOBOA Mainframe as follows: 2-10 Storage and Shipment. 2-11 The BOB1 A can be stored or shipped at tem- 1. Switch the mainframe LINE OFF/ON switch to OFF. Disconnect the power supply cable from the rear of the 8080A mainframe. peratures between -40 o C and 75 0 C. The instrument should be protected from temperature extremes which cause condensation within the instrument. If the instrument is to be shipped to a Hewlett-Packard Sales/Service Office, attach a tag showing owner, return address, model number and full serial number and the type of service required. The original shipping carton and packaging material may be re-usable but the Hewlett-Packard Sales/Service office will also provide information and recommendations on materials to be used if the original packing is not available or re-usable. General instructions for re-packing are as follows: 2-12 1. Wrap instrument in heavy paper or plastic 2. Use strong shipping container. A doublewall carton made of 350-pou nd test material is adequate. 3. Use enough shock-absorbing material (3 to 4 inch layer) around all sides of instrument to provide firm cushion and prevent movement inside container. Protect control panel with cardboard. 4. Seal shipping container securely. 5. Mark shipping container F RAG I LE to encourage careful handling. 6. In any correspondence, refer to instrument by model number and full serial number. ( RATE VERNIER -"'1:--- • --NHI.- -k.ti::r300-100-10'" • -100-10 - 1 -100 - 10 1 2 . 3 3 - 10 • 1 - 1· 10 - , - 1 ~ 10-\00 PERIOD _iii_iii NORM TRIG 3 ====="~= 5.. ~AN EXT INPUT G) G o GATE ! EXT tNt o @ NORMrate generator free-running at selected repetition rate. Figure 3-1. 8081 A Controls and Connectors 4 = EXT INPUT LEVEL control: determines the threshold voltage of the external trigger input. Adjustable from -1 V to +1 V. NEG-POS-MAN switch: for selecting the slope polarity and/or source of external trigger signals. In the POS and NEG positions, signals are appl ied via the EXT INPUT connector. In the MAN position, the MAN pushbutton is used as the trigger. MAN pushbutton: for generat;ng external trigger signals when in TRIG and EXT GATE modes. The NEG-POS-MAN switch must be in the MAN position. TRIGrate generator output is shaped version of input. Input is either via the MAN pushbutton or an external signal into the EXT INPUT connector. INT GATEexternal input is disconnected. Gate signal is provided internally by the word generator module and 6. .,v turns the rate generator on synchronously. Repetition rate as selected on the rate controls. Mode switch: for selecting the mode of operation of the rate generator: EXT GATEgate signal turns rate generator on synchronously. Repetition rate as selected on rate controls. Gate 'iignal either via the MAN pushbutton or the EXT INPUT connector. Max. gate frequency 150 MHz. /::'~ , . . ., -IV TRIGGER OUTPUT(-) RATE switch: for selecting the range of pulse repetition rate. Rate VERNIER: for continuous adjustment of the repetition rate within the range selected on the RATE switch. Clockwise rotation increases the pulse period (reduces the rate). In TRIGGER mode, the rate controls have no effect. 'f)(T tNPU1 l.fVEL EXT INPUT connector: DC coupled input to which external trigger/gate signals are applied. Input impedance is 50 ohms. Maximum input level ;s ± 6V. (~) TRIGGER OUTPUT connector: provides negative output pulses in all modes of operation. In TRIG. mode the output pulses are related to the trigger input and not the repetion rate generator. Maximum external voltage ;s ± 2V. SECTION 3 ' - - - - - - - - - - - - - - - - - - - - - - - - - - - - - OPERATION 3-1 INTRODUCTION 3-2 This operating section explains the function of the controls and connectors and describes the operators checks and typical operati ng modes of the 8081 A 300 MHz Rate Generator module. 3-3 Panel Features 3-12 J Initial Control Settings SOSl A: 1 RATE range switch 2 Rate V ERN I ER 3 Mode switch 5 NEG-POS-MAN switch 300-100 MHz CCW NORM MAN Oscilloscope: 3-4 Front panel controls and connectors are shown in figure 3-1. Description numbers match the numbers on the illustration. 3-5 Operator's Checks 3-6 Use the Operator's Checks (paragraph 3-91 to verify that the SOSl A is functioning correctly. The SOSl A must be installed in an SOSOA Mainframe for these checks. Thus it is important to remember that any fault that is found may be in the BOSl A Rate Generator or the 80S0A Mainframe. If the mai nframe is suspected, carry out the SOSOA Performance Checks. 3-7 100mV/div Channel A EXPANDED, 1ns/div 3-13 The repetition rate of the output should be approximately 300 MHz. 3-14 Turn the rate VERNIER 2 fully clockwise. The repetition rate should be approximately 100 MHz. 3-15 Repeat repetition rate checks for RATE ranges 100-10 MHz and 10-1 MHz at the CCW and CW positions of the rate VERNIER. The repetition rates should be approximately as shown on the RATE range switch. Operating Instructions 3-8 The Operating I nstructions (paragraph 3-21 I consist of a number of procedures that explain in detail the function of each of the 80S1 A controls. All operating modes are described. However, 1nternal Gate mode can only be used if an 8084A 300 MHz Word Generator module is avai lable. 3-9 Sensitivity Trigger Timebase OPERATOR'S CHECKS 3-10 The test set for the Operator's Checks is as shown in figure 3-2. The 8081 A Rate Generator module must be mounted in an S080A Mainframe. 3-11 Set the LI NE switch 9 on the 8080A Mainframe to ON. 3-16 Switch off the oscilloscope. Replace the oscilloscope sampling plug-in with real time dual channel vertical and timebase plug-ins. Reconnect the TRIGGER OUTPUT 8 to the channel A input and switch on the osci Iloscope. 3-17 Repeat repetition rate checks for RATE ranges 1 MHz -100 KHz, 100-10 KHz, 10-1 KHz, 1 KHz-l00 Hz and 100-10 Hz at the CCW and CW positions of the rate VE RN I ER. The repetition rates should be approximately as shown on the RATE range switch. 3-18 Set BOB1A mode s'.'vitch 3 toTRIGand press the MAN pushbutton 4 several times. 3-19 Output should go high when button is pressed and low when button is released. 8080A MAINFRAME RATE VERN1£R ,--MH.-- -Hl- -kH:r- 300-100-10 - 1 -100-10 - 1 -100 ... 10 1 J ~ - IU - I - • - I1J - , . t - 11)- ascI LLOSCOPE WITH 1 GHz SAMPLING PLUG-IN iL'.l'J P 'RIOI> EXT INPUT LEVEL GAlE t~OR" HUG EXT INT D 9 CH A 50 OHM COAXIAL CABLE Figure 3-2. Test Set for Operator's Checks RATE J --I\lH.-~O-100-'O . 1 J J - t - VERNIER -kHl- - 1 - toO -10 - 1 - 1 - ~[JI - I - -H.;z;- . ~ -100 - 10 1 -' 2 ·1 EXT H4PUT LEVEl NQR,lOI TRIO GAtE EXT fN:r -, NEG pOs ro\AN---~~ OSCI LLOSCOPE D 9 PULSE GENERATOR -------0---0 DUAL CHANNE L VERTICAL PLUG·I N - - - - - 0- - - - - OUTPUT 500HM TEE 50 OHM COAXIAL CABLES Figure 3-3. Suggested Equipment Setup for Operating Instructions L....- TIMEBASE PLUG·I N EXT INPUT CH. - o CH.----' A B 00 3-26 3-20 Set BOB1 A mode switch 3 to EXT. GATE and press the MAN pushbutton. The repetition rate should start when the button is pressed and stop when the button is released. When the button is pressed, i. e. when the gate opens, the first pulse should always start at the beginning. However, when the button is released, i. e. the gate closes, the last pulse may be cut short. 3-21 3-27 In Normal mode, the repetition rate generator is free-running at the frequency set on the rate con· trois. The pulse output is the same as on the oscilloscope (the trigger output is identical to the pulse output). The pulse duty cycle is 40-60%. OPERATING INSTRUCTIONS 3-28 3-22 A suggested equipment setup for the Operating Instructions is shown in figure 3-3. The B081 A Rate Generator must be mounted in an BOBOA Mainframe. The following procedure is designed to give a full understanding of the function of each of the 8081 A operating modes. Initial Control Settings 8081A: 8081A CD RATE range switch ~ Rate VERNIER ~ Mode switch @ EXT INPUT LEVEL @ NEG-paS-MAN switch @ Mode switch @ NEG-POS·MAN switch 1 MHz-100 KHz CCW NORM +1 V pas Timebase Trigger TRIG pas Pulse Generator: Switch pulse generator on. Set pu Ise period to about 15 fJ.sec. Set pulse width to about 8 fJ.sec. Set pulse amplitude to 2V and polarity to pas. Set the oscilloscope to trigger from channel B internally. Oscilloscope: 2 psec/div Channel A internal Pulse Generator: switched off. 3-25 modes: Trigger Mode 3-29 In TRIGGER mode, the repetition rate of the output is independent of the internal repetition rate generator. The output is, in fact, a pulse-shaped version of the input signal. The input can be either external via the EXT INPUT (-j) or local using the MAN pushbutton ®. For external triggering, an external signal source is required. The test set is as shown in figure 3-3. The changes in control settings are as follows. 3-23 Set the LINE switch on the 8080A Mainframe to ON. 3-24 Normal Mode. The 8081 A has four different operating Normal (NORM) Trigger (TRIG) External Gate (EXT GATE) Internal Gate (INT GATE) EXTERNAL INPUT RATE GENERATOR OUTPUT Ov ov 3-30 The oscilloscope display should be as shown in figure 3-4. The 8081 A output should only be delayed on the external input by the internal circuitry delay of the 8081 A II IIII II -L -O.6V f L I ---J !-fixed delay Figure 3-4. Rate Generator Output in Trigger Mode. 3-31 Vary the EXT INPUT LEVEL switch ® and note that the trigger output disappears when the threshold level reaches approximately +0.2V. Set the external input level to -1 V. 3-32 Set the NEG-POS-MAN switch @to NEG. Set the pulse generator output polarity to negative. 3-33 The oscilloscope display should be similar to that shown in figure 3-4 except that the external input is a negative-going pulse. 3-34 Vary the EXT INPUT LEVEL switch ® and note that the trigger output disappears when the threshold level reaches approximately -O.2V. 3-35 As mentioned previously, the pulse output in trigger mode can also be produced using the MAN pushbutton ®. First set the NEG-POS-MAN switch ® to MAN. This transfers the trigger input from the EXT INPUT connector (J) to the MAN pushbutton @ . Set the oscilloscope timebase to about 0.2 sec/em and trigger internally. Press the MAN pushbutton @ and note that the pulse output goes high when the button is pressed and low when it is released. The EXT INPUT LEVEL control ® has no effect in this mode. 3-36 External Gate Mode. 3-37 In External Gate mode the repetition rate generator output is enabled/disabled by a gate signal. EXTERNAL INPUT 3-38 Set the Mode switch ® to EXT GATE. Set the oscilloscope timebase to 2 usee/em and trigger internally. Press the MAN pushbutton and note that the rep. rate generator runs at the selected rate for as long as the button is held down. 3-39 Set the NEG-POS-MAN switch @ to POS and the EXT INPUT LEVE L control ® to -1 V. Vary the rate VERNIER C2>. Note that the last pulse may be cut short by the gate turning off (see figure 3-5). 3-40 Gate off Ov-------; Last pulse may not be completed Figure 3-5. Rate Generator Output in External Gate Mode. Internal Gate Mode 3-41 Internal Gate mode can only be used if an 8084A 300 MHz Word Generator module is available. In this mode of operation the gate pulse for the rate generator comes from the word generator via an internal connection. This gate enables the rate generator output in the same way as an external gate. The purpose of this mode is to enable an exact number of data bits to be gated out of the word generator. OV Gate on RATE GENERATOR OUTPUT This gate signa I can come from either an external source ( via the EXT INPUT connector (J) or locally using the MAN pushbutton ®. When the gate signal switches on, the first output pulse is always started at the beginning. When the gate signal switches off, the pulse is terminated immediately, i. e. the last pulse may be cut short. , . - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - SECTION 4 PERFORMANCE TESTS L-- 4-1 EQUIPMENT INTRODUCTION 4-2 The procedures in this section test the Model 8081 A's electrical performance using the specifications of Table 1-2 as the performance standards. All tests can be performed without access to the interior of the instrument. A simpler operational test is included in section 3 under Operator's Checks. Counter PROCEDURE 1. 4-3 EQUIPMENT REQUI RED 4-4 Equipment required for the performance tests is listed in the Recommended Test Equipment table in section 1. Any equipment that satisfies the critical specifications given in the table can be substituted for the recommended model. 4-5 HP 5345A Set up the equipment as shown in figure 4-1 and set the controls as follows: 8081A: , RATE range Rate VERNIER Operating Mode switch NEG-POS-MAN switch 300MHz-l00MHz CCW NORM POS TEST RECORD 4-6 The results of the performance tests can be tabu lated on the Test Record at the end of the procedures. The Test Record lists all of the tested specifications and their acceptable limits. Test results recorded at incoming inspection can be used for comparison in troubleshooting and after repairs or adjustments. 4--7 REPETITION RATE TEST SPECI FICATION Repetition Rate ., 10Hz to 300MHz DESCRIPTION The output frequency of the Model 8081 A is checked over the full repetition rate range. 808lA 8080A MAINFRAME o Figure 4-1. Repetition Rate Test Setup 2. Using the counter, measure the Model 8081 A output frequency at the following repetition rate settings. 8081A RATE VERNI ER RESULT 300MHz-100MHz 300MHz-100MHz 100MHz- lOMHz 100MHz- 10MHz 1OM Hz- 1MHz 10MHz- 1MHz 1MHz-100KHz 1MHz-100KHz 100KHz- 10KHz 100KHz- 10KHz 10KHz- 1KHz 10KHz- 1KHz 1KHz-100Hz 1KHz-100Hz 100Hz- 10Hz 100Hz- 10Hz CCW CW CCW CW CCW CW CCW CW CCW CW CCW CW CCW CW CCW CW > 300MHz < 100MHz > 100MHz < 10MHz > 10MHz < 1MHz > 1MHz < 100KHz > 100KHz < 10KHz > 10KHz < 1KHz > 1KHz < 100Hz > 100Hz < 10Hz 4-8 3. TRIGGER OUTPUT TEST Measure Ampl itude, Baseline and Duty Cycle. SPECIFICATION Baseline ,-.6V ± 50mV to OV ± 50mV 50 % ± 10 % Trigger Output Pulse Duty Cycle I-t J-t Off-J on DESCRIPTION The trigger output pu Ise parameters are tested. Duty cycle = SAMPUNG OSCI LlOSCOPE 80S1A 01 4-9 o Figure 4-2. Trigger Output Test Setup EXTERNAL TRIGGER MODE (SLOW) TEST The repetition rate output is controlled externally. The trigger and internal outputs are pulse-shaped versions of the trigger input. HP 182C Mainframe with 1810A plug-in PROCEDURE 1. x 100% SPECI FICATION EQUIPMENT Sampling oscilloscope ton period D 8080A MAINFRAME 6V ± 50mV OV ± 50mV 50 % ~ 10 % Amplitude should be . , Baseline should be Duty Cycle shou Id be Set up the equipment as shown in figure 4-2 and set the controls as follows: DESCRIPTION The function of the Model 8081 A is tested in external trigger mode using an external sinewave generator to apply a trigger signal of 10KHz. REI>,L TIME 8081A: so OHM OSCILI,OSCOP~ , TERL4lNATlON RATE range Rate V ERN I ER Operating Mode switch NEG-POS-MAN switch 300MHz-100MHz , .. , , CW NORM POS 50QHM Oscilloscope Sensitivity .. , Trigger Timebase mode Timebase - direct Timebase - expanded 2. 200mV/div internal expanded 20ns/div 2ns/div Set Frequency to 100MHz on screen using Rate VERNIER. T£~ Figure 4-3. External Trigger Mode (Slow) Test Setup EQUIPMENT Oscillator , Real Time Oscilloscope HP 651 B HP 182C Mainframe with 1804A and 1821 A plug-ins 50 Ohm Feedthru Termination HP 10100C / 5. PROCEDURE 1. Set up the equipment as shown in figure 4-3 and set the controls as follows: Set NEG-POS-MAN switch to NEG and repeat steps 3 and 4 observing the pulses. The Model 8081 A output shou Id trigger on the negative half-cycles of the oscillator output. 8081 A: RATE range Rate VERNIER Operating Mode switch EXT INPUT LEVEL NEG-POS-MAN switch 100KHz-10KHz CCW TRIG center pas 4-10 EXTERNAL GATE MODE (SLOW) TEST SPECIFICATION Gate signal turns rep. rate generator on synchronously. Oscilloscope: Sensitivity (both channels) Trigger. , Timebase main 1V/div external 20ps/div Oscillator: DESCRIPTION The function of the Model 8081 A is tested in external gate mode using an external sinewave generator to apply a gate signal of 10KHz. 10KHz 1VRMs Frequency Amplitude REAl. ,IME OSCU.LOSCOPE SQOHM 2. Display oscillator output and Model 8081 A output on screen 3. Check that during the positive slope of the oscilla· tor output a positive pu Ise output occurs. TERMINATION so OHM TEE OSCILLATOR OUTPUT Figure 4-4. External Gate Mode (Slow) Test Setup i*-- Propagation delay OUTPUT 4. EQUIPMENT I 8081A Oscillator Real Time Oscilloscope Turn EXT INPUT LEVEL control from positive to negative and observe waveforms. , HP 651 B HP 182C Mainframe with 1804A and 1821 A plug-ins. 50 Ohm Feedthru Termination HP 10100C PROCEDURE 1. OSCILLATOR OUTPUT Set up the equipment as shown in figure 4-4 and set the controls as follows: 8081A: 8081 A OUTPUT Threshold lever""" +1 V -1V RATE range. , Rate VERNIER Operating Mode switch EXT INPUT LEVEL NEG-paS-MAN switch 100KHz-10KHz CCW GATE EXT center pas 4-11 Oscilloscope: Sensitivity (both cha nnels) Trigger 1VIdiv external Timebase, main 20~s/div MANUAL FUNCTION TEST \ SPECI FI CATION All external functions can be triggered manually by pressing a pushbutton. Oscillator: REAL TIME ascI LLOSCO~E: Frequency Amplitude 500HM 10KHz 1VRMs 2. Display oscillator output and 8081 A output on screen. 3. Check that during the positive slope of the oscillator output a pulse burst appears. HRMINATJON SOS1A SOBOA MAINfRAME o 00 Figure 4-5. Manual Function Test Setup EQUIPMENT Threshold level Real Time Oscilloscope OSCILLATOR HP 182C Mainframe with 1804A and 1821 A plug-ins OUTPUT I I I I PROCEDURE I I ~ r--Delay of 1/2 period 8081A OUTPUT 4. i,hnnnn rl -----.lJ UUUUU~ 1. OV Set up the equipment as shown in figure 4-5 and set the controls as follows: 8081 A: RATE range Rate VERNIER Operating Mode switch EXT INPUT LEVEL NEG-POS-MAN switch Turn EXT INPUT LEVEL control from positive to negative and observe the waveforms. , .. , 100KHz-10KHz CCW GATE EXT , MAN Oscilloscope: OSCILLATOR I OUTPUT I Sensitivity Trigger, , Timebase, main -+ __ I_ I I I I I I I I I I I I 8081A OUTPUT~ IlJU Threshold level --+ +1 V I I ~__~ I I I I I I I I 2. 1V/div internal 10IlS/div , Press MAN pushbutton. As long as the Man button is pressed a pulse train should be visible ~MAN button--..J I 11nJllUlJlJt: pressed I _llll~11Ill·I.lml-UIJ/JINI.ll- OV -1V 3. Note that the last pulse will be cut off as soon as the gate closes. 5. , , Set the NEG-POS-MAN switch to NEG and repeat steps 3 and 4 observing the pulses. The 8081 A output should be gated on the negative half-cycles of the oscillator output. Set the Operati ng Mode switch to T RIG. Press the MAN pushbutton. As long as the MAN button is pressed the output should be OV. r- MAN button~ pressed I 4-12 Oscilloscope: EXTERNAL TRIGGER MODE (FAST) TEST Sensitivity Trigger Timebase mode Timebase - direct Timebase - expanded SPECI FICATION Same as EXTERNAL TRIGGER MODE (SLOW), paragraph 4-9. 2. Adjust the Model8081A EXT INPUT LEVEL control to obtain a stable 50% duty cycle display. 3. Each trigger pulse from the pulse generator should release one output pu Ise from the Model 8081 A. Check that the display has a frequency of 250M Hz. OESCRI PTION A high frequency test of the Model 8081 A external trigger mode using an external pu Ise generator to apply a trigger signal of 250M Hz. SAMPLING OSCILLOSCOPE 200mV/div external expanded 20ns/div 0.5ns/div 4-13 EXTERNAL GATE MODE (FAST) TEST SPECIFICATION Same as EXTERNAL GATE MODE (SLOW), paragraph 4-10. DESCRIPTION Figure 4-6. External Trigger Mode (Fast) Test Setup The maximum external gate frequency of the Model 8081 A is tested in external gate mode using an external pulse generator to apply a gate signal of 150MHz. EQUIPMENT Pulse Generator Sampling Oscilloscope HP 8082A HP 182C with 181 OA plug-in SAr,.lPLIfIlG OSCII,.LOSCOPE PROCEDURE 1. Set up the equ ipment as shown in figure 4-6 and set the controls as follows: Figure 4-7. External Gate Mode (Fast) Test Setup Pulse Generator: Repetition rate Pulse width Amplitude Polarity 250MHz 2ns 0.2 V positive EQUIPMENT Pulse Generator Sampling Oscilloscope HP 8082A HP 182C with 1810A plug-in 8081A: RATE range Rate VERNI ER Operating Mode switch EXT INPUT LEVEL NEG-POS-MAN switch _ TRIG center POS PROCEDURE 1. Set up the equ ipment as shown in figure 4-7 and set up the controls as follows: Pulse Generator: Oscilloscope: Repetition rate 150MHz Pulse width square wave Amplitude 0.2 V Polarity ........................•.. positive Sensitivity Trigger Timebase mode Timebase - direct Timebase - expanded 200mV/div external , .. expanded 20ns/div 5ns/div 8081 A: RATE range Rate VERNIER Operating Mode switch EXT INPUT LEVEL NEG-paS-MAN switch 2. Adjust the EXT INPUT LEVE L control for a stable 150 MHz pulse presentation on the display. 3. Observe that each external gate pulse releases two 8081 A pulses. 300MHz-l00MHz CCW GATE EXT center pas Table 4-1 Performance Test Record Hewlett-Packard Model 8081 A 300MHz Repetition Rate Generator Serial No. Results Paragraph Number 4-7 4-8 Tested by Date Test Min Repetition Rate 10Hz to 300MHz Trigger Output Trigger Output Pulse: Duty Cycle: -.6V ± 50mV to OV ± 50mV 50 % ± 10 % Actual Max <10HZ - - > 300M Hz -0.55V -O.05V 40% -O.65V +0.05V 60% ,-------------------------------SECTION 5 '-----------------------------ADJUSTMENTS 5-1 INTRODUCTION 5-2 This section describes adjustments required to return the Model 8081 A Repetition Rate Generator to peak operating condition. Included in this section are test setups, and checks and adjustments. Removal and replacement procedures are given in the Disassembly/ Assembly procedure in section 7. An adjustment locator diagram is included in this section. 5-3 SAFETY CONSIDERATIONS 5-4 Although this instrument has been designed in accordance with international safety standards, this manual contains information and warnings which must be followed to ensure safe operation and to retain the instrument in a safe condition (see Sections II and III). Service and adjustments should be performed only by qualified service personnel. I WARNING 5-7 Make sure that only fuses with the required rated current and of the specified type (normal blow, ti me delay, etc.) are used for replacement. The use of repaired fuses and the short-circuiting of fuseholders must be avoided. 5-8 Whenever it is likely that the protection has been impaired, the instru ment must be made inoperative and be secured against any unintended operation. 5-9 TEST EQUIPMENT REQUIRED 5-10 Tabl e 1-1 contai ns a list of test equipment and test accessories required in the adjustment procedures. In addition, the tables contain the required minimum specifications and a suggested manufacturer's model number. 5-11 ALIGNMENT TOOL 5-12 A non-metallic alignment tool must be used when making any adjustments to the Model 8081 A. I Any interruption of the protective (grounding) conductor inside or outside the instrument or disconnection of the protective earth terminal is likely to make the apparatus dangerous. Intentional interruption is prohibited. 5-13 5-14 After making the adjustments, carry out the Performance Checks in Section 4. 5-15 5-5 Any adjustment, maintenance, and repair of the opened instrument under voltage should be avoided as much as possible and, when inevitable, should be carried out only by a skilled person who is aware of the hazard involved The opening of covers or removal of parts, except those to which access can be gained by hand, may expose live parts, and also accessible terminals may be live. 5-6 Capacitors inside the instrument may still be charged even if the instrument has been disconnected from its source of supply. PERFORMANCE CHECKS RELATED ADJUSTMENTS 5-16 The following adjustments must be performed in the order indicated in the procedures. The adjustments can not be performed individually because of interaction. 5-17 After making the adjustments the following related adjustments should be checked. If the Model 8081 A output is connected to a word generator, the word generator trigger level must be checked and, if necessary, adjusted. If the Model 8081 A output is connected to an output ampl ifier, the output amplifier duty cycle must be checked and, if necessary, adjusted. 5-18 DUTY CYCLE AND FREQUENCY ADJUSTMENTS Duty Cycle Frequency adjust 307M 9M 100M-10M 300M-100M c:::J CJ c:J R4 R8 R16 DESCRIPTION 08081-66502 BOARD A2 These adjustments set up the correct duty cycle at high and low frequencies and cal ibrate the frequency output. An oscilloscope is used to check the duty cycle and a counter to check the frequency. SAMPLING OSCILLOSCOPE 8081A 8OS0A MAINfRAME c::::J D cI R109 o 80SlA = S080A , 0 /, =0 Figure 5-1. Duty Cycle Adjustment Test Setup 0 0 = / MA~NFRAME // / , / ~/ / ;,- / / , COUNTE.A / /// // /' 0 EQUIPMENT HP 182C Mainframe Sampling Oscilloscope with 181 OA Sampl ing plug-in HP 5345A Counter Figure 5-2. Frequency Adjustment Test Setup 3. Set up the equ ipment as shown in figure 5-2 and set the controls as follows: PROCEDURE 80Bl A: 1. Set up the equipment as shown in figure 5-1 and set the controls as follows: RATE RANGE Rate VERNIER Operating Mode 8081A: RATE range Rate VERNIER Operating Mode 300-100MHz Clockwise NORM Counter: Frequency Oscilloscope: Sensitivity Trigger Timebase mode Timebase - direct Timebase - expanded 2. 200m V/d iv internal expanded 20ns/div 1ns/div Adjust A2R16 for a duty cycle of .... 50 % ± 10 % 300-100MHz CCW NORM 350MHz 4. Adjust A2R4 to a frequency of 307MHz ± .5MHz 5. Set the Model 8081 A RAT Eta 100-1 OMHz. and rate VERNIER to CWo 6. Adjust A2R8 to a frequency of ... 9MHz ± .1 MHz 7. Reconnect the equipment as in figure 5-1 and set the controls as follows: B081A: Duty Cycle = ton period x 100% RAT E range Rate VERNIER Operating Mode 300-100MHz CCW NORM 8081A: Oscilloscope: Sensitivity Trigger Sweep Mode Timebase - main Timebase - expanded RATE range Rate VERNIER Operating Mode Input Polarity EXT INPUT LEVEL 200mV/div internal expanded 20ns/div 0.5ns/div 8. Adjust A2 R109 for a duty cycle of .. 50 % ± 10 % 9. Connect an external pulse generator to the Model 8081 A EXT INPUT connector and set the controls as follows: , 300-100MHz CCW GATE EXT POS approx +0.5V Oscilloscope: same settings as for previous adjustment (step 7). External Pulse Generator: Repetition Rate 50MHz Operating Mode square wave Ampl itude . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 V Polarity positive 10. Check the duty cycle of the first pulse on the display. If necessary, readjust Rl09 slightly to set the duty cycle to ............................... 50% ± 10% , - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - SECTION 6 ' - - - - - - - - - - - - - - - - - - - - - - - - - - - R E P L A C E A B L E PARTS 6-1 INTRODUCTION 6-7 The information given for each part consists of the following: 6-2 This section contains information for ordering parts. Table 6-1 lists abbreviations used in the parts lists and elsewhere in the manual. Table 6-2 lists all replaceable parts in reference designator order. Table 6-3 contains the names and addresses that correspond to the manufacturer code numbers. 6-3 a. The Hewlett-Packard part number. b. The total quantity (Qty) in the instrument. This is given only once for each part at the first appearance of the part in the list. c. The description of the part. d. A typical manufacturer of the part in a five-digit code. e. The manufacturers' code number for the part. ABBREVIATIONS 6-4 Table 6-1 lists abbreviations used in the parts lists, schematics and elsewhere in the manual. In some cases two forms of the abbreviation are used, one all in capital letters, and one partial or no capitals. This occurs because the abbreviations in the parts lists are always all capitals. However, in the schematics and other parts of the manual, the same abbreviations may have upper and lower case letters. 6-8 ORDERING INFORMATION 6-6 Table 6-2 is the list of replaceable parts and is organised as follows: 6-9 To order a part listed in the replaceable parts table, quote the Hewlett-Packard part number, indicate the quantity required, and address the order to the nearest Hewlett- Packard office (list of Sales/Service offices at the rear of the 8080A Mainframe manual). a. Illustrated parts breakdowns for chassis mounted parts. b. Chassis mounted parts in alphanumerical order by reference designator. c. Electrical assemblies and their components in alphanumerical order by reference designator. 6-10 To order a part that is not listed in the replaceable parts table, include the instrument model num· ber, instrument serial number, the description and function of the part, and the number of parts required. Address the order to the nearest Hewlett-Packard office. 6-5 REPLACEABLE PARTS 6-4----------------------------------------------------------------------------- FRONT PANEL (MP5) FRONT PANEL (INSIDE) MP1 R'O A1S4 I[[IJ Al MP2 d A1S3 lillJ / A1R1 A1S1 <©I o .... - ....... ( \ ; A1 Rl / r--, MP6 C NO ~o • NC Al S2 01 l.- _ _ _ J 08081 • 66501 CON TROL A1S2 @ / MP11 {TAPE, ADHESIVE BOTH SIDES TAPE, SCREENING ....I MP 12 . '. E 'l.- ~ I- 10 ~ A1W2 A2 J6 A1W1 II I § Ie: r;r{ 7 0 1 MP5 IT h ~ lJ (' . C Ir--A1 I BJ \ II II f- P/OW2 Wl II f--- A1W2 + • A2 1 \ A2X2 P/OW1 i + I J7 IrR ~ L---..r& ~2 I /2J1 / A2X3/ A3X/ MP3/ I -r---- A3 ------ 10 I- \ AIWl A2 A2 J4(LOWER) J5(UPPER) "'" MP3 . MP7 l""I P/OW2 Rl \ o P/O :1 F igu re 6-1. 8081 A Replaceable Parts (0 0) P/OWl PlOW 1 "'" BOAR D \MP 10 MPll f I / MPa MP9 01 r--- MP 10 -----------------------------------6-5 Table 6-2. Replaceable Parts ~8D~l ~O::lIA I~S[HJMt~T F~ SERIOL PRU IX h"1 'EF~~"NC~ Ut$IG~ATCR Al 02 '3 MPl nz H-P PART OESCRIPTIGN ~UM~ER CijCUI-tt~CI )9CEI-H5~2 3D 03091'005)3 to ec ~31C-l(~L KNOB AY-CD~rpCL AV-PATE AY-MCT~EP MP~ 0)7(-1(0 04C3- Q 1t4 ;E(ijl-((;",I 3101-0351 HCe GLllJE PC PANEL fRONT UP PUSh dUTTOi Mf 7 ~<"'( v-89 £ ~ 146(\-1070 PANEL -SUB !APE-INOL ,~P 3 MPb "p II P-VAR CUL 10K .7S~ 5~ I_ AY-! NIL CUT RATE VE R\\I\ t.: R 6-6-------------------------------------------------------'--------Table 6-2. Replaceable Parts (cont'd) MCr.H dOdt. ~COEl fN5T~UM€NT A l;~SlJCUMtf\ll SE~ 8C8U I l'8'J8t-6650 1 eo H-P Al RI ZI00-2492 R-~AR AI A1 AI AL Al 5I 5Z 53 53 54 31)I-IZZ1 C8C 15-~190, :WI-15~B 5)"J-~~40 v~CI5-619J] s. 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COIL COKE • Bl UH COIL COKE .82 U~ cu [l CCKE 1.5 UM AZ I~OI-r,O<'C 010 S I .O~A 30V PA>T DES CR I PT l,lN REFERE;.CE DESIGNATOR ~-P A2 A2 t4 lS 9100-0341> 9100-n346 eO[L F XD COIL FX 0 AZ A2 AZ AZ AZ L" l7 16 L9 lI-) 9170-0029 9170-1:029 9110-00Z9 9110-()CZ9 9[,TQ-3147 FERR (lE 8EAO FtRRITE 8EAO FERRITE BEAU FERRITE dEAO COlt-F tlF 1')Uf Al A2 AZ AZ Ll4 LIS Llo lI7 '1100-3147 91vQ-3147 9100-;139 COll-F ~F IJUF COlt-F liF I~UF Cull INllUC 75U~ CO Il- F ~F 10UF A2 AZ AZ AZ AZ AZ AZ AZ AZ A2 01 ~2 03 04 o,l5 Nu~BER ~100-Jl41 Ido;-OZO~ IB 53-0Z 84 I 8~4- C215 1854-0392 1853-,1'186 185~-C~9l Jo Q7 OM 1853- 00,,6 ld54-039Z 010 Id53-0036 u<; t85~-CZI5 .Z AZ AZ A2 A2 y1L OIZ U13 1853-0.1)~ 015 18'>3-003~ AZ A2 AZ AZ AZ <oll6 \117 OZO OZI 02Z Id53-0030 1853-(1036 185,3- oe36 1853-11036 AZ A2 AZ AZ A2 Ol~ 0,123 024 ~25 026 Q27 lE53-0036 1>153-0036 1853- COb IB~3-C036 X5TR-P~P S I C~IP X5TR-PNP SI C~IP XSTR-PNP S I CHIP XS TR-P~P 51 CHIP XSTR-PNP ) I CHIP XS TR-PNP XSTR-P/vP XS TR-P/vP xsrR-p/vp XS T R-PNP SI SI SI 5r SI CHIP CHIP CHIP CHI P CHIP S I PNP 5 [ PNP XSTR XSTR XSTR X51 R XSTR X5TR S I Nt'N XS1 R SI NPN X$TR 51 NPN XSTR-PNP 5 ] X51i< SI NPN XSTR lN5i79 S I <,)31 o,l32 03Q 1854-0Ll5 1854-(;ZI5 I >l54-C" 15 18;3-·1930 leS4-C2l5 A2 u35 185~-0345 51 NP/V 5 I NPN S I /VP/V C~IP A2 A2 AZ AZ AZ RI RZ R3 04 R5 3698-450 I 0757-0'43 Z100-3353 0"98-4<,Z4 R-F S~K It .12,W R-F II n l .ll5_ R-F 1~.7Kll .-~AR ZOK .5. 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R-F R-F .- F R-F R-F ZR7 1% .IZ5. 281 U .IZ5_ 7. 5K I ~ .125. 4. C2KLt 51.1 U R-F 51. I It Q-F 30 I It • 125. 5. 5L1 DE SPOT ~2 51 ~101-1341 AZ A2 AZ AZ UI L2 In IC-DU~l 1(-OL~l ~Z 04 U6 1826-1111 1>126-(111 '.l81-3JI I L6Z')-GZoS AZ AZ VRIJ vR II 1901-046(' C I C S I L;'j't/ .I5A ole SI 15V .1!iA AZ .1 ijI5~-0( 05 _IRE 22GA w PV C A2 XZ xZ .3 XJ 12CG-C <,7 12( ~- C 48 12C Cf-C , I LOCK [IIP-IC 5CCKeT-IC lCCK 01 P-IC ~uCKE T-IC ~2 AZ ~Z lij5e-(01~ I~CI-CH( 12CC... ·: ~b OP AMPl GP A~PL lC DIG REP RATE !C D[G TTL ARRAY );~TR ,------------------------------SECTION 7 L.....------------------------------SERVICE 7-1 INTRODUCTION 7-2 This section contains the component layouts and schematic diagrams for the Model 8081A Rep. Rate Generator. Tables listing the reference designators and schematic symbols used are also given. Refer to section 6 for the replaceable parts information. 7-3 RECOMMENDED TEST EQUIPMENT 7-4 Test equipment and test equipment accessories required to maintain the Model 8081A are listed in table 1-1. Equipment other than that listed can be used if it meets the listed critical specifications. Table 7-1. Reference Designators A B BT C CP CR DL DS F == == == = = = = = = FL = HR J = K L M == = = = assembly motor battery capacitor coupler diode delay line lamp fuse filter heater jack relay inductor meter U P == == Q == R RT S T TB = V VR W X Y TP == = = = = = = = = = micro-circuit plug transistor resistor thermistor switch transformer terminal board vacuum, tube, neon bu Ib. photocell, etc. voltage regu lator cable socket crystal test point 7-2 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Table 7-2 Schematic Diagram Symbols The following symbols conform, as far as possible, with ANSI Y32.2, IEEE No. 315 and ANSI Y32.14 (for the logic symbols). These standards should be consulted when further information is required. Resistance values are in ohms, capacitance values in microfarads and inductance values in micro henries unless otherwise noted! PIO Part of * Asterisk denotes a factory selected value. The value shown is the nominal value. [ ---...., _ _ _ -J Encloses front panel nomenclature Encloses rear panel nomenclature Heavy line indicates signal path - --90 Heavy dashed line indicates primary feedback path Wire colour code. Same as resistor colour code. First number is wire body colour. Wire our plug used as link. Test point ina circuit. Point may/may not be identified on P. C. board. Used with trimmer potentiometers or capacitors to indicate screwdriver adjustment. Direct connection to earth. .J.. Ground connection to instrument chassis or frame. Used when a number of common-return connections are at the same potential. If there is more than one such system in the same circu it, numbers are written in the triangles so that all connections with the same potential have the same number. I xV Specific potential difference with respect to a potential reference level, ego I +10V Normally open toggle switch. Circles (0) are used for the contacts to indicate a locking type switch. / --------------------------------7-3 Spring return, 2-position transfer switch. Triangles (A-) '!re used for the contacts to indicate a non-locking type switch. o 9 9 o 6 6 ) .~ 2-position, 2-pole slide switch. Air cored inductor. ~. II Air cored transformer. The dot (e) is used, when necessary, to indicate instantaneous polarity. Iron core If Ferrite core ~ bead Ferrite bead ---.l~ Varactor diode ~ Multi-junction diode Diode Zener diode Schottky diode Light Emitting Diode (LED) Photodiode Fuse Neon Filament lamp 7-4------------------------------- Terminals and Connecton Soldered connection. Example of fixed male and female connectors with plug and socket and contact designators, ego P. C. board edge connector and socket. example of bulkhead mounted coaxial socket with free coaxial plug and cable. example of coaxial cable with termination soldered to P. C. board. Analog/Digital logic symbols , ~ 2 3 2-input NAND gate 4-input NOR gate Inverter Flip-flop. L R - Q 6 The dynamic indicator denotes that this is a dynamic input and operates on a transition, not a level. -----------------------------------7-5 Complex functions represented by rectangu lar box. Letters can be used inside the rectangle to clarify the function. A truth table should be included, as close as possible to the circuit. U6 14 Schmitt trigger +- + Wired AND connection Wired OR connection 2 3 Operational amplifier Voltage source Current source 7-6------------------------------ Schematic ..-- --..,~ Signal number -~. ~ jr ) Schematic ;; ~ number' 3 These references on a signal leaving a schematic diagram indicate the signal des1ination. The circle contains the signat number and the square contains the numb er of the schema 1ic to which that signal goes. I ,I 6 These references on a signat entering a SChematic diagram Indicate the signal crigin. The circle contain s the signal number and the square conto'lns the number of the schematic on which that signal originates. 7-8 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - FRONT PANEL (INSIDE) A1Wl A1W2 r} •••••-il :' A1J3 7 1 71 L!.. ·1 1 4•-• -•-•8 o Rl A1 /---"" ( \ ...... -/ C NO ~ A1R1 NC ,--\ I ••• 1 I'- J A152 08081 - 66501 CONTROL BOARD ( SERVICE SHEET 1 --7-9 ~~N~~~ BOARDI .. I I W2 1 ~:~ ~~~i~-ARJ-~~-E-BOARDI: (~N177--k-<O:-~-_<;>_._y_I (08081- 66502) (OBOB1- 66502) I -10V [II --.-1:WJ--~'-~+til~l L.__ I _ ---- I . 54 EXT MHz -'OV Rl INPUT 5K LEVEL -lOV o 52 MAN. PUSHBUTTON -10V 51 ~ oNlels}~ 0, L A1 CONTROL _ BOARD _ (08081 - 66501) ---- 1 CONTROL BOARD A1 7-10-------------------------------------------- 300MHz RATE GENERATOR BOARD A2 08081-66502 FREQUENCY PGM I5Il ~ • • WI JUMPER -1 ~ CI.O + + J1 COMPONENT SIDE CIRCUIT SIDE 1 2 3 I. 5 6 7 8 A8COEFHJ 9 10 11 12 13 11. 15 KLMNPRS Q EMITTER· COLLECTOR BASE ( SERVICE SHEET 2 7-11 A2 300 MHz RATE GENERATOR BOARD 108081-665021 ~n 316 '." fl." UIDO'-; [Jl!l C6 33~ lR?6 [ )llK Tca 10n ." 09 >K -S.2\1 RI9 L1 .alp" [6 [1 36 I 36[f.!., RJI Sl '''' [RH Sl R 20 j.1 536 , 3[9 8EAQ 38EAO ; [B Rl1 ~;"~ a R31. pi 38EAO e19n,s, rpll LII nn ' U3 ~ 13 ~ . INTERNAL [);~~ ~7'.O4: I R1261 "I ~~' _, ~ I -mr -4 ~J~6 ,-- ~ RH9 SI ADJuST Rl10 82 .l. "I<J - wt PANEL - rk"r,t'.~ ~ ;.i-J" :LL...C ....' __ • +- f''J_+_-+--e"='''J-_-..,C.."loI'*C.... 1 (3) .I'n JIll '""5rr ~ S W ,3·\ 'I i,oa08,.e~~~" S2 pa" 1.' :6"0 ~R9S : m:~ ~ 3.011'\ [~:"H +~i~ " Q~lOl '.IIK ---r],v ' I C1_l_J +-__. ._~ .. _ CR11 029 & i:~~ [ ;;~5 ~ lIP :X3 r" 0%Q1t-+-r---, & .. "sf 36\ b~»'t---+-----+ ".---- ~-:7a -4,J ~:~ '2~ -t-t; I' -IOV CONTROL BOARD I ' 0 [ RIO' 'SI~ 0 <>- NEG R)S MAN PIO Al CONTROL BOARDI [ ~ 10&161- 6l)SOll : 106061·E6S0n 'l-o·_12_B l : ?;L .J 1',:xJ)_'~_:_7~- --'.-.~ i LO_2_'~~~'~~=~~~~A~~_~ I_~:~~~~~~~~~~~~~~~~~:~~~~~~~~~_._~_2_V __ i II U'Y-~81 I 1° )3 ':----P.-1~----A--1~----~ 3 10 1L K -- -~ i 6 I './ I h'1!1. r-r- ~ffi~~ '?\ l.LiK 'i\ ~c;;.:: I iQ :.:~: ~'?~ 025 ~.H-----Qr~R-'"--+/0lO ~ INtERNAL 1 .1. ~ ---,.---------------l.--+~......!lr' 1OIK 'l-l' ROO R7, -----,L--C26---,=+---I--- . '." I IOA1 ONTROl BOARD R1' J9 -- '~X1l1 --~ '" JJ'~, L -.---------JCJ l-=_ . d I ~ n;'j )~,.~ I ~O'{j' , IWi" Ui9K ~u" ! -~ [ '1<81. GATE' INPUT GATE ·1.2v 3.31K 22 031 '5 ON WHEN r:Y llioK ~ ~ ~~9 g:~II~~M Xll{ 11 en °1' (20 n U S l .n"" ,:,; ~9S RB8 ("'5189 5\ 03', In a 35 REP RAT E GEt-IERA10A l)S20K ~9<-,-~-R-,O-'-------..l-C-J-,-- '>ov ~ .l. r R~' ~-~-z~~R~a~-_ 1 : ~OPfJl-±-----±----_.---~------ -- - - -:1:----,-------·--1 ~~~~~~~~~;g~:~B~g:~1 -----------------------------------1l:1l"'------~ lp/O A3 DISTRIBUTION I .. [P/O MAINFRAME ~OARD '0808'- 665011 ),), \( >()( )(.\<)t >()( >( \ ( ----....r-v-"'rv""V""'..rv-v-v-...~...., DI~TRIBUTION BOA~Q ,080B0-66S0" 2 300MHzRATEGENERATORBOARDA2 7-12------------------------------------------------------------------------ MAINFRAME MOTHERBOARD (POWER SUPPLY & PGM CONNECTIONS) ,r~A~ co MPONENT cIRCUIT GNO SIDE SIDE -- -20V -lOV / " PGM /1' I '---I L ___ f--- NOT USED -,i /1' ~, -52V PGM ••/1' '-----< -- - .1OV GNO -/~~r'-·7~1 " L......-. - ---- f---- I LJi -- A3 DISTRIBUTION BOARD I - I- 2, ,,8 3 ,C i - 5.2V " 1 i I -IOV I '", GNO I Ii I I I I I I I I I ... r I I , I I l " I , ,N / I I l' I 1 P 13" I / I 'R / I 1 I I lSI' I I Ii i I I I I ! ,$ / 1 ---100 ", .,,;; I I I I I 1 K I 12 i i iI ,M 11 I I I J 9/ , i I " / NOT USED I I , 8", 10 I I ,H I I r i ,F 7 i / 6, I ii ,0 , ... I [ E 5 I I SERVICE SHEET 3 / r -IOV --------~ I , A I - 20V I I I I I 1 GNO I I (08081 - 665031 --~ I I ~- ~- IL _ RATE GENERATOR BOARO A2 A3 DISTRIBUTION BOARD