Agilent Technologies 4284A Service Manual
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Agilent Technologies 4284A Service Manual

Agilent Technologies 4284A Service Manual

Precision lcr meter
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  • Page 1 sales@artisantg.com artisantg.com (217) 352-9330 | Visit our website - Click HERE...
  • Page 2 NOTE Manual change supplement are revised as often as necessary to keep manuals as current and accurate as possible. Agilent Technologies recommends that you periodically request the latest edition of this supplement. Free copies are available from all Agilent Technologies offices.
  • Page 4 M A N U A L C H A N G E S H P 4284A MANUAL IDENTIFICATION Precision LCR Meter Model Number: H P 4284A Date Printed: January 1989 Part Number: 04284-90100 This supplement contains information for correcting manual errors and for adapting the manual to newer instruments that contain improvements or modifications not documented in the existing manual.
  • Page 5 ▶ CHANGE 1 Page 1-A30-4, Table 1-46. A30 Handler Interface Replaceable Parts List: See the Parts Information Table at the end of this supplement. Page 1-A30-5, Figure 1-44. A30 Handler Interface Component Locations: Replace the component locations with Figure 1 Page 1-A30-5, Figure 1-45.
  • Page 6 • Replace W5, W6, and W7 with J4 and W3 as shown next. • Replace W8 with J5 and W4 as shown next. • Replace W9, W10, and W11 with J6 and W5 as shown next.
  • Page 7 0-013 -0 0-LZU -0 0-0E1 1 -0 0 0 0 o- CO - e o 0-9ZU -0 0- Z8 - e o t - • • GI-SZU -0 • • • • G-' 7 Z1J -0 0_ 1 1A - 0 0 0_1L12i-p 0 0-En A30N18 Pin No.
  • Page 8 ▶ CHANGE 2 Page 4-A7-3, Table 4-A7-2. A7 Digital Control Replaceable Parts Lists (4/4) Change the version number to 1.11. See Parts Information Table at the end of this supplement. Table 1. Parts Information CHANGE P A G E Note Reference Description Designator...
  • Page 9 " V...
  • Page 10 Agilent 4284A PRECISION LCR Meter (Including Option 001, 006, 201, 202, 301) Service Manual SERIAL NUMBERS This manual applies directly to instruments whose serial number prefix is 2826J-, 2832J- or 2848J-, and whose ROM-based firmware version 01.10. For additional important information about serial numbers, read "SECTION 1, SERIAL NUMBER of this Service Manual."...
  • Page 11 This document contains proprietary information that is protected by copyright. A l l rights are reserved. No part of this document may be photocopied, reproduced, or translated to another language without the prior written consent of the Agilent Technologies. Agilent Technologies Japan, Ltd.
  • Page 12 Manual Printing History The manual printing date and part number indicate its current edition. The printing date changes when a new edition is printed. (Minor corrections and updates that are incorporated at reprint do not cause the date to change.) The manual part number changes when extensive technical changes are incorporated.
  • Page 13 Safety Summary The following general safety precautions must be observed during all phases of operation, service, and repair of this instrument. Failure to comply with these precautions or with specific WARNINGS elsewhere in this manual may impair the protection provided by the equipment. In addition it violates safety standards of design, manufacture, and intended use of the instrument.
  • Page 14 Agilent Technologies. Buyer shall prepay shipping charges to Agilent Technologies and Agilent Technologies shall pay shipping charges to return the product to Buyer. However, Buyer shall pay all shipping charges, duties, and taxes for products returned to Agilent Technologies from another country.
  • Page 15 Exclusive Remedies The remedies provided herein are buyer's sole and exclusive remedies. Agilent technologies shall not be liable for any direct, indirect, special, incidental, o r consequential damages, whether based on contract, tort, or any other legal theory. Assistance Product maintenance agreements and other customer assistance agreements are available for Agilent Technologies products.

  • Page 16: Table Of Contents

    TABLE OF CONTENTS SECTION 1. GENERAL INFORMATION 1-1. I N T R O D U C T I O N 1-2. M A N U A L ORGANIZATION 1-3. I N S T R U M E N T COVERED BY THIS MANUAL 1-4.
  • Page 17 TABLE OF CONTENTS SECTION 3. ASSEMBLY SERVICE INFORMATIONS 3-1. I N T R O D U C T I O N 3-2. S A F E T Y CONSIDERATIONS 3-3. R E C O M M E N D E D TEST EQUIPMENT 3-4.
  • Page 18 TABLE OF CONTENTS SECTION 4. SERVICE SHEETS 4-1. I N T R O D U C I T O N 4-2. C I R C U I T DESCRIPTION 4-3. T R O U B L E S H O O T I N G AIDS 4-4.
  • Page 19 A-2. M A N U A L CHANGES...

  • Page 20: Manual Organization

    When repairing the HP 4284A: refer to this section first, isolate the faulty board, and then repair the HP 4284A a t the component level using the faulty board's service sheet in SECTION 4.

  • Page 21: I N S T R U M E N T Covered By This Manual

    1-4. RECOMMENDED TEST EQUIPMENT Table 1-1 lists the equipment required for adjustment, performance testing, and trouble- shooting the HP 4284A. O t h e r equipment may be substituted i f it meets or exceeds the critical specifications given in Table 1-1.
  • Page 22 Table 1-1. Recommended Test Equipment (1 of 2) Equipment Requirements Recommended Model Electronic Frequency: 20 Hz to 1 MHz HP 5334B Counter Accuracy: «0.01`)/0 Frequency: 20 Hz to 1 MHz HP 3458A P,A,T Voltage range: 5 m to 20 Vrms Voltmeter Accuracy: «...
  • Page 23 Table 1-1. Recommended Test Equipment (2 of 2) Recommended Model Requirements Equipment HP PN 42841-65001 No substitute Bias IF Simulator HP PN 04278-65001 No substitute Handler Simulator HP PN 04278-65301 Scanner No substitute Simulator HP PN 04278-61635 Simulator No substitute Cable No Substitute HP PN 42841-61640...

  • Page 24: Section 2. Adjustments

    The removal or opening of covers for adjustment, or removal of parts other than those which are accessible by hand will expose circuits containing dangerous voltage levels. Remember that even though you have turned the HP 4284A off, and unplugged it, the ca- sluamis...

  • Page 25: Test Equipment

    Table 1-1 lists the test equipment required t o perform the adjustments described in this section. U s e only calibrated test equipment when adjusting the HP 4284A. I f the recom- mended test equipment is not available, equipment whose specifications are equal to, or surpass those of the recommended test equipment may be used.

  • Page 26: Adjustment Interaction

    2-5. ADJUSTMENT INTERACTION Some o f the H P 4284A adjustments are interactive. I f you repair o r replace a n H P 4284A assembly, b e sure t o perform t h e related adjustment(s) i n t h e sequence given. Ta b l e 2 - 2 lists the adjustments required for each assembly repaired or replaced.

  • Page 27: Initial Operating Procedure

    Check that the line voltage selector switch on the rear panel of the HP 4284A is properly set. Turn the HP 4284A ON and let it warm-up and stabilize for at least 30 minutes. A f t e r the warm-up period, initialize the instrument.
  • Page 28 DISASSEMBLY, TOP COVER REMOVAL To gain access to the adjustment points, perform the following procedure. 1. Remove the two plastic instrument-feet located at the upper corners of the rear panel. 2. Fully loosen the top cover retaining screw located at the back of the top cover. 3.

  • Page 29: Adjustment Program

    2-7. ADJUSTMENT PROGRAM The Adjustment Program is required when performing parts of the HP 4284A's adjustments. Table 2-2 shows which adjustments require the adjustment program. Table 2-2. Adjustment Program Requirement Adjustment Name Paragraph Adjustment Program Power Supply Adjustment Not Required...

  • Page 30: Initial Operating Procedure

    Write Protection STEP1: Copyright and other information are displayed. STEP2: T h e HP 4284A's HP-IB address must be registered to the adjustment program to control the HP 4284A by HP-IB. STEP3: Adjustments can be selected using the softkeys. T h e program is finished by pressing the 'Exit' softkey.

  • Page 31: C L O S I N G Procedure

    4. C o n n e c t t h e H P 4284A, H P 3458A a n d t h e C o m p u t e r using t h e H P - I B Cables.
  • Page 32 1. The Main Menu is displayed on the controller's screen. Press the 'Exit' softkey to finish the calibration program. Then the write protect display will appear. 2. Turn the HP 4284A OFF. 3. Replace the HP 4284A's EEPROM write protect jumper (A7W2) t o its Normal position (N). s} a i}snf 4.

  • Page 33: Power Supply Adjustments

    10:1 Divider Oscilloscope Probe, 1 m n HP 10431A PROCEDURE: 1. Make sure the HP 4284A is turned OFF. 2. Loosen the two screws holding the left hand side top shield plate (the shield plate on which the WARNING message is printed), and remove it.
  • Page 34 Coupling: D C , 1 MQ TIMEBASE Range: 50 us 6. Turn the HP 4284A ON. 7. Adjust A1R19 (FREQ-ADJ) until the period (T), of the waveform, is 12.5 us ± 0.5 us, as shown in Figure 2-5. Figure 2-4 shows A1R19's location.

  • Page 35: Power Supply Output Voltage Adjustment

    3. Connect multimeter's L o input to A7TP2 (GND), and connect the Hi input to A7TP1. Figure 2-7 shows the location of A7TP1 and A7TP2. 2 Alligator clips to 1 Dual Banana Plug Test Lead Lo input to A7TP2 HP 4284A Hi input to A7TP1 MULTIMETER 0 0 0 O D D...
  • Page 36 4. Turn Al R52 (V-ADJ) fully CCW (Counter Clock-Wise). Figure 2-7 shows Al R52's location. 5. Adjust Al R52 until the multimeter reads 5 V ± 0.05 V. sluawls 2-13...

  • Page 37: Sense Amplifier Dc Offset Adjustment

    2-9. SENSE AMPLIFIER DC OFFSET ADJUSTMENT This adjustment minimize the DC offset voltage between the voltage channel sense amplifier and the current channel sense amplifier. EQUIPMENT: HP 3458A Multimeter Calibration R-L Standard HP 16074A HP PN 04278-66598 Extender Board (For Analog Board) 2 Alligator Clips to 1 Dual Banana Plug Test Lead HP 11002A...
  • Page 38 2 Alligator clips to 1 Dual LO Input to A3TP4 Hi Input to A3TP6 Banana Plug Test Lead HP 4284A MULTIMETER Figure 2-8. Sense Amplifier DC Offset Adjustment Setup A3 Board (ERR) ( S E N S E AMP VOS ADJ) (EDUT)

  • Page 39: D C Bias Level Adjustment

    E n t e r the HP 3458A's HP-lB address using the numeric keys and the 'Enter' softkey. 3. Perform the adjustment according t o the program's instruction. Figure 2-10 shows the adjustment setup. HP 4284A MULTIMETER BNC(f)-dual banana / p l u g Adapter...

  • Page 40: T E S T Signal Level/Level Monitor Adjustments 2 - 1

    Figure 2-11 shows the adjustment setup, Figure 2-12 shows the location o f A5R11 (OSC LVL). HP 4284A M U LT I M E T E R B N C ( f ) - d u a l banana / p l u g Adapter...
  • Page 41 Figure 2-13 shows the adjustment setup. (1) Test Signal Level Adjustment Setup HP 4284A M U LT I M E T E R B N C ( f ) - d u a l banana...

  • Page 42: I M P E D A N C E Measurement Adjustments

    2-12. IMPEDANCE MEASUREMENT ADJUSTMENT This adjustment minimizes the null amplifier DC offset and the zero offset, and then updates the EEPROM calibration data to optimize the impedance measurement accuracy. NOTE All o t h e r adjustments m u s t ha v e b e e n completed before performing t h i s adjustment.
  • Page 43 2 Alligator clips to 1 Dual Banana Plug Test Lead Lo input to A2TP4 HP 4284A Hi input to A2TP3 MULTIMETER 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 M O O...
  • Page 44 R224. W301, W302 and W303 are related to R324. Figure 2-17 shows the rela- tion between the jumper settings and the adjustable range. A f t e r changing the jumper settings, press the 'Retry' softkey t o reset the HP 4284A's adjustment conditions.
  • Page 45 5. Perform t h e impedance measurement adjustment (EEPROM d a t a updating) according to the program instruction. Figure 2-18 shows the adjustment setup. HP 4284A 0 0 0 0 0 0 0 0 0 0 0 0 0...
  • Page 46 3-1. INTRODUCTION This s e c t i o n p r o v i d e s a s s e m b l y service information f o r t h e H P 4284A PRECISION L C R METER (20 Hz to 1 MHz) assemblies.

  • Page 47: After Service Product Safety Checks

    3. Check the GUARD terminal on the front panel using the procedure outlined in step 4. Unplug the 4284A's power plug from the power source. S e t the power switch to ON. Ti e the line and neutral pins of the power connector together and check the resistance between them and the instrument's enclosure.

  • Page 48: Assembly Designations And Locations

    3-5. ASSEMBLY DESIGNATIONS AND LOCATIONS Assemblies, such as printed circuit boards, are assigned sequential numbers, A l , A2 etc., as shown in Figure 3-1. Figure 3-1 also gives the location of the assemblies. A30/A31 ol I Onnn — 0 CD -7 a co ' <...
  • Page 49 Assembly No. Assembly Name Keyboard Assembly Memory Card Board Assembly Al 0 Al 3 DC-AC Converter Board Assembly Keyboard/Display Control Board Assembly LCD Module Assembly Figure 3-1. Assembly Identification (2/2)

  • Page 50: Replaceable Mechanical Parts List

    3-6. REPLACEABLE MECHANICAL PARTS LIST The replaceable mechanical parts are listed in Tables 3-1 to 3-9. The ordering information is given in SECTION 4. Table 3-1. Major Mechanical Parts Reference Part Number Description Designator 5081-8819 Front Cap 5062-3704 Strap Handle 5041-8820 Rear Cap 5062-3842...
  • Page 51 Table 3-2. Top View ( Top cover removed) Reference Description Part Number Designator 1400-1048 Edge Saddle Top Plate over Al board 04278-00633 04284-00625 Top Plate over A2 thru A7 0515-1550 Screw 1400-1334 Cable Clamp Cable Clamp 6 (Opt001) 1400-1334...
  • Page 52 Table 3-3. Bottom View ( Bottom cover removed ) — 0 CD d — Reference Part Number Description Designator 0515-1550 Screw Pan-Head 0403-0285 Rubber Foot 1400-1334 Cable Clamp...
  • Page 53 Table 3-4. Front Panel Assembly Components (1/2) Diode...
  • Page 54 Table 3-4. Front Panel Assembly Components (2/2) Reference Description Part Number Designator 04279-01201 Holder 0535-0031 Cable Tie 1400-0249 KEY&DISP Control Unit 04278-66590 Screw 0515-1550 Memory Card Board 04278-66510 Bezel 04278-40002 Knob 04278-40003 Spring 04278-08001 Waher (F) 3050-0891 0535-0031 Screw (M3) 0515-0920 Washer -LK HLCL 2190-0584...
  • Page 55 Table 3-5. Front Panel Components _ _ _ - - ' - = - - - - - - 5 O 6 1 C-3 = .>. <..,w - - E l C D 0 0 0 • . . . - „...
  • Page 56 Table 3-6. Shield Case And Heat Sink (1 of 3) A3 Board Board Reference Part Number Description Designator 04278-00601 Shield on component side Screw Pan-Head 0515-1550 04278-00602 Shield on circuit side 0515-1007 Screw Flat-Head 04278-01204 Heat Sink for CR28,CR29, CR30,and CR39 0 CD 0515-1550 Screw Pan-Head...
  • Page 57 Table 3-6. Shield Case And Heat Sink (2 of 3) A4 Board (rev a,b) A4 Board (rev c,d) Reference Board Part Number Qty Description Designator A4 (rev a,b) 04284-00660 Shield on component side 0515-0914 Screw Pan-Head 04284-00632 Shield on circuit side (Large) 0515-1005 Screw Flat-Head 04284-01202...
  • Page 58 Table 3-6. Shield Case And Heat Sink (3 of 3) A6 Board Board Reference Part Number Qty Description Designator Shield on component side 04284-00610 Screw Pan-Head 0515-1550 Shield on circuit side 0515-1005 Screw Flat-Head 1205-0696 Heat Sink for U18 1205-0318 Heat Sink for U210 0 CD ,..77...
  • Page 59 Table 3-7. Rear Panel Components MI IN 4- NN C•1 C\J Reference Part Number Qty Description Part Number Qty Description Reference Designator Designator Cable Assembly 04284-61611 (std) 04278-00212 1 Blank Panel 3101-2862 Power Switch (included 0515-1550 2 Screw in PN 04284-61611) (opt301) 04278-00216 1 1/F P l a t e 04278-61632 1 Flat Cable Assembly...
  • Page 60 Table 3-8. Coaxial Cable Assembly Marker Part Number Description "A" "H" 04284-61608 A5J200 to A64J1 (Opt 001) 04284-61602 A4J2 to Hcur (Magnet Coil Assembly) 04284-61603 A3J7 to Hpot (Magnet Coil Assembly) "C" 04284-61604 A3J4 to Lpot (Magnet Coil Assembly) 04284-61605 A3J5 to Lcur (Magnet Coil Assembly) "E"...

  • Page 61: Tools And Fasteners

    The 4284A's mechanical components are secured using metric threaded faseners. M a n y faseners in the 4284A may appear to be Phillips type, but they are in fact, Pozidrive type. To avoid damaging them, use only Pozidrive screwdrivers to remove or tighten Pozidrive type faseners.

  • Page 62: Al Assembly Removal

    3-8-2. Al ASSEMBLY REMOVAL 1. Loosen the two screws which secure the left hand side top shield plate. D o n ' t completely remove them. NOTE There are two top shield plates. To gain access to the A l assembly, remove the top shield plate which has the WARNING message printed on it.

  • Page 63: Front Panel Disassembly

    3-8-4. FRONT PANEL DISASSEMBLY This paragraph describes how to remove the front panel assembly from the 4284A. I n order to remove the A9, A10, A13, A90, or A91 assembly which are shown in Figure 3-2, first dis- assemble the front panel assembly.

  • Page 64: A13 Assembly Removal

    3-8-7. A13 ASSEMBLY REMOVAL First remove the front panel assembly from the 4284A as described in paragraph 3-8-4. 1. Remove four screws that secure the shield case o n which the WARNING is printed. 2. Remove the screw that secure the A13 assembly to the back of the shield case.
  • Page 65 Al 0 AR, )aisit 4,!!' Figure 3-2. A9, A10, A13, A90, or A91 Assembly Removal 3-20...

  • Page 66: Theory Of Operation

    The HP 4284A is composed of five block sections: power supply block section, digital con- trol block section, source block section, transducer (TRD) block section, and vector ratio detector (VRD) section.
  • Page 67 Table 3-10. Relationship between the DCV from Al and Each Assembly Coo ling POWER SUPPLY +8 V • +12V ±15V — 2 1 V +48 V ±12V FAN 3-22...

  • Page 68: Digital Control Block Section

    3-9-2. DIGITAL CONTROL BLOCK SECTION The digital control functional group consists of the following boards. A7 D i g i t a l Control (CPU) A9 K e y b o a r d A10 M e m o r y Card Interface A20 H P-IB Interface A30 H a n d l e r Interface (Option 201) A31 H a n d l e r Interface (Option 202)
  • Page 69 The A30/A31 handler interface board interfaces between the HP 4284A and the external handler. A40 Scanner Interface (Option 301) The A40 scanner interface board interfaces between the HP 4284A and the external scanner. The A40 board has two EEPROMs for storing 128 sets of OPEN/SHORT/LOAD correction data at each three frequencies.

  • Page 70: Source Block Section

    The digital sinewave is filtered by the LPF, and the filtered sine wave is input to the D-A converter (DAC) as a voltage reference. S o the 4284A covers various test signals with a high resolution by using both the DAC and the attenuator.
  • Page 71 A5 board. The added signal is amplified (x 10), and is output to the Hcur Terminal. In the case of the 4284A with the Option 001, you can select the high power mode (ON/OFF) which swiches two relays.

  • Page 72: Transducer Block Section

    3-9-4. TRANSDUCER BLOCK SECTION The HP 4284A employees the current-to-votlage coverter as a ammeter. S e e Figure 3-7. The current through the DUT is detected by a current-to-voltage (I-V) converter using a resis- tor (Range resistor, RR) in the feedback circuit. T h e I-V converter generates a current flow through the range resistor equal to the current through the DUT.
  • Page 73 The auto barance bridge circuitly used in the 4284A ensures that the vector voltage across the feedback resistor will be an accurate proportional representation of the current through the device under test. T h e basic principle of the auto-balance-bridge circuit is explained in terms of the two oscillator model illustrated in Figure 3-8.
  • Page 74 The actual auto balance bridge circuit is composed of the A2 modulator and A3 range resis- tor boards. T h e auto balance bridge consists of a null detector, a vector generator, and a feedback resistor (range resistor). The null detector consists of a current-to-voltage (I-V) converter, a phase detector, and an integrator.

  • Page 75: E C T O R Ratio Detector Section

    3-9-5. VECTOR RATIO DETECTOR SECTION The vector ratio detector is the A6 board, and it consists of the phase sensitive detector, the detection phase generator, and the A-D (Analog-to-digital) converter. The phase sensitive detector detects the ERR voltage and the EDUT voltage using 0 ° and 90°...
  • Page 76 A N A L O G S E C T I O N B L O C K DI A GRAM (STD) A 3 R A N G E RESISTOR A 6 V E C T O R R A T I O DETECTOR A 5 S I G N A L SOURCE Q u a s i - Sine Channel...
  • Page 77 A N A L O G S E C T I O N B L O C K D I A G R A M (OPT.001) A 3 R A N G E RESISTOR A 6 V E C T O R R A T I O DETECTOR A 4 H I G H P O W E R AMPLIFIER/DC BIAS D C 8 1 A S MONITOR.

  • Page 78: Faulty Board Isolation

    3-10. FAULTY BOARD ISOLATION When repairing the HP 4284A, firstly you must find the faulty board. T h i s paragraph pro- vides the information for isolating the faulty board. 3-10-1. SELF TEST Self tests are the 4284A's special functions used for making troubleshooting the digital con- trol group.
  • Page 79 Also Every time the HP 4284A turned on, the p o w e r on sequence (for example, initial- izes the timer o n A7) is performed. T h i s p o w e r o n sequence is checked b y watching the LED array (A7DS3, A7DS4).
  • Page 80 (2) Self test selected by softkeys Softkey selected self tests are shown below, and each self test is described in SEC- TION 5 of the operation manual. 1. Memory card R/W test 2. LED display test 3. LCD display test 4.

  • Page 81: Faulty Board Isolation Program

    NOTE Each bit of the A7S3 usually uses the digital interface selection. S o after perform- ing the bit switch selected self test, the A7S3 switch must be set properly. F o r more details, refer to the A7 board service sheet, SECTION 4. 3-10-2.
  • Page 82 When either the power supply group trouble isolation or the digital group trouble isolation is performed, you don't have t o connect the HP-IB cable between the controller and the HP 4284A. Check the 4284A in accordance with the message on the controller's screen. 3-39...

  • Page 83: Faulty Board Isolation Procedure

    1. Connect the HP-IB cable between the HP-IB connectors on the 4284A's rear panel and on the controller's rear panel, and connect the HP-IB cable between the HP-IB connectors on the 4284A's rear panel and on the HP 3458A's rear panel. Figure 3-14 shows the setup.
  • Page 84 HP 4284A MULCT BOARD ISOLATION PROGRAM MAIN MENU f l : A u t o Sequence Trouble I s o l a t i o n ( f 2 t o f 6 ) f2: Power Supply Trouble I s o l a t i o n f3.
  • Page 85 Table 3-14. Main Menu Softkeys Softkey Description f1: ' A u t o ' Used to check all groups, and to isolate the faulty board. T h e checking order is shown in Figure 3-13. f2: ' P o w e r ' Used to check the power supply group, and to isolate the faulty board in the power supply group.
  • Page 86 NOTE You can only select the `TRD' softkey after you have checked the other groups. 0 CD O c . / , = CD 3-43...
  • Page 87 NOTES 3-44...

  • Page 88: Section 4. Service Sheets

    The troubleshooting aids provide information t o help you troubleshoot problems i n the HP 4284A. Usually the troubleshooting aids consists of a list of jumpers, a list of test points, and troubleshooting information. The jumper list shows the strapping configuration for each jumper.

  • Page 89: Board Connector Pin Assignment

    4-4. BOARD CONNECTOR PIN ASSIGNMENT The pin assignments for each board are provided with the component locations using the names listed in Table 4-1. Table 4-1. Signal Name Used for Pin Assignments Name Description AD C L K Clock signal for A-D converter A 11-6 A20 Address bus lines /ACSO to /ACS7...

  • Page 90: Replaceable Parts List

    4-5. REPLACEABLE PARTS LIST The replaceable parts list provides information about the replaceable parts. 4-5-1. ABBREVIATIONS Table 4-2 lists the abbreviations used throughout this manual. I n some cases, three forms of the same abbreviation are used: all upper case, all lower case, and mixed upper and lower case.

  • Page 91: Replaceable Parts Lists

    4-5-2. REPLACEABLE PARTS LISTS Table 4-3 lists the names and addresses of the manufacturers identified by Mfr. Code in the parts lists. I n m o s t cases t h e information given f o r each part includes the following information: 1.

  • Page 92: Ordering Information

    4-5-3. ORDERING INFORMATION When ordering a replacement part listed in the Replaceable Parts List, specify the Hewlett- Packard part number and the quantity required, and send the order to the nearest Hewlett- Packard office. When ordering a part not listed on the Replaceable Parts List, state the full instrument model number and serial number, describe the function of the part, and give the quantity required.
  • Page 93 DANGEROUS VOLTAGE, EXCEEDS 1000 VOLTS Knob control Screwdriver adjustment Circuit assembly boarderline Asterisk denotes a f a c t o r y selected value. Va l u e shown i s typical, p a r t may be omitted. Bead inductance. Circuit board pattern inductance Heavy line indicates main signal path.

  • Page 94: A L Power Supply Service Sheet 4 - A

    4-8. A l POWER SUPPIY SERVICE SHEET 4-8-1. CIRCUIT DESCRIPTION The Al Power Supply board provides +5 V, +8 V, ±12 V, ±15 V, -21 V, and ±48 V to the A l l Mother Board. The Al Power Supply board is divided into two sections at transformer Al T3: the primary circuit and the secondary circuit.
  • Page 95 [ Slow Start Circuit ] The slow start circuit, composed of A1Q1, A l Q2, A103, A109, and A l Q10, lengthens the rise time of the supply voltage by limiting the maximum switching pulse width at power up. When the voltage from the primary rectifier becomes greater than about 240 V, the slow start circuit is enabled.
  • Page 96 Table 4-4 shows the troubleshooting waveforms, and Table 4-5 lists the DC output voltage at each test point. 171717;171 DISCONNECT THE POWER CABLE BEFORE WATCHING THE BELOW WAVEFORMS HP 4284A Setup: 1. Disconnect the power cable. 2. Remove the Al board. 3. Set Al W1 to the test position.
  • Page 97 Table 4-5. A l D C Voltage and Test Points Test Point Name Actual DC Voltage Al TP13 -15V -16.5 V ± 0 . 7 V Al TP14 +15V +16.5 V ± 0 . 7 V Al TP15 -12V -12.5 V ± 0 . 5 V AlTP16 +5.2 V ±...
  • Page 98 Table 4-6. Al Power Supply Replaceable Parts List ( 1/5 ) Reference HP Part Description Mfr Part Number Qty. Code Designator Number POWER SUPPLY 28480 0 4 2 8 4 - 6 6 5 0 1 0 4 2 8 4 - 6 6 5 0 1 CAPACITOR-FXD .
  • Page 99 Table 4-6. Al Power Supply Replaceable Parts List ( 2/5 ) Reference HP Part Qty. Description Mfr Part Number Designator Number Code A1CR6 1 9 0 1 - 0 0 5 0 DIODE-SWITCHING 8 0 V 200MA 2 N S DO- 3 5 9N171 1N4150 A1CR7...
  • Page 100 Table 4-6. A l Power Supply Replaceable Parts List ( 3/5 ) HP Part Reference Qty. Description Mfr Part Number Designator Number Code A1F1 2 11 0 - 0 0 1 4 FUSE 4 A 2 5 0 V TD 1 . 2 5 X . 2 5 U L 75915 313004 2 11 0 - 0 7 4 6...
  • Page 101 Table 4-6. A l P o w e r Supply Replaceable Parts List ( 4/5 ) Reference HP Part Qty. Description Mir Part Number Designator Number Code A1R21 0 6 9 8 - 0 0 8 4 RESISTOR 2 . 1 5 K 1% . 1 2 5 W F T C = 0 + - 1 0 0 24546 C T 4 - 1 / 8 - 7 0 - 2 1 5 1 - F A1R22...
  • Page 102 Table 4-6. A l P o w e r Supply Replaceable Parts List ( 5/5 ) Reference HP Pad M f r Qty. Description Mfr Part Number Number A1R78 0 6 9 8 - 0 0 8 2 RESISTOR 4 6 4 1 % . 1 2 5 W F T C = 0 + - 1 0 0 24546 C T 4 - 1 / 8 - T O - 4 6 4 0 - F A1R79...
  • Page 103 O c, O 0 F., 3 3 3 0 - 84 - 0 0 - 85 - 0 • 0 0 0-615 - 0 0 - RIG - 0 0 8 3 - 0 0 - R10-00- R13-0 4 2 111 - 1111 * CO-- R R 2 : 8 1 1 0 - R14-0 „...
  • Page 104 A I P O W E R SUPPLY SECONDARY PRIMA% RY .IC, C439 4 . 5 . 0..21= 2200 C 3 4 4701. 0 3 1 I • CM 1463 3300 0640-2.2 36. 3 F,..3 C451 00,5 !oo.. 220 4 3 7 0 , 6 .40 12 2 ,CM30, , 2 C 240...

  • Page 105: A 2 Modulator Service Sheet 4 - A

    4-9. A2 MODULATOR SERVICE SHEET The A2 modulator board is covered by the exchange assembly program. T h e part number of the A2 rebuilt exchange board is listed in Table 4-A2-1. A2 Modulator Replaceable Parts List. Table 4-A2-1. A2 Modulator Replaceable Parts List Reference HP Part Nfir...
  • Page 106 These troubleshooting aids provide a list of jumpers and test points. T h e jumpers are listed in Table 4-A2-2, and the test points are listed in Table 4-A2-3. T h e test point locations are shown in Figure 4-A2-1. Table 4-A2-2.
  • Page 107 4:Service Sheets TP10 TP2 T P 3 T P 4 TP6 TP7 TP8 T P 9 - 1 2 T P 1 2 TP13 T P 1 4 NULL +5 UNBAL X30 GND -8 + 8 ODEG 90DEG T P 11 MOD GND NULLOUT ■...
  • Page 108 NOTES 4-A2-4...

  • Page 109: A3 Range Resistor Service Sheet

    The A3 board is covered by the exchange assembly program. The part number of the A3 board for a standard HP 4284A is different from the part number of the A3 board for an Option 001 HP 4284A. T h e part number of the A3 rebuilt exchange board is listed in Table 4-A3-1.
  • Page 110 These troubleshooting aids provide a list of test points. T h e A3 board test point locations for the standard 4284As are shown in Figure 4-A3-1, and the A3 board test point locations f o r Option 001 4284As are shown in Figure 4-A3-2. Table 4-A3-2.
  • Page 111 4:Service Sheets TP1 TP2 TP7 TP8 TP9 T P 3 TP4 TP5 IV GND +5 - 1 2 +12 L C ERR GND n f l $ . 1 y 1 �.,,,3,71.0.325-. 0 • • 0 -R210- 0 0 - R 2 0 1 - 0 EDUT TLEI21%•57A0 .4‘...
  • Page 112 4 6 6 c 0 -0-03.7040_0-0e_003.0 E Z E e l m o p o o a o C 9 „ dot" 0 ) 0- i t o-Ri o -00-09 -o R 7 0 -00-R7 - 0 CS=R7G-00-R6 -0 9 0-077-0 0-011-0130i04214-.

  • Page 113: A 4 High Power Amplifier/Dc Bias Service Sheet 4 - A

    4-11. A4 HIGH POWER AMPLIFIER/DC BIAS SERVICE SHEET The A4 board is covered by the exchange assembly program. T h e part number of an A4 rebuilt exchange board is listed in Table 4-A4-1. Table 4-A4-1. A4 High Power Amplifier/DC Bias Replaceable Parts List Reference HP Part (Hy.
  • Page 114 These troubleshooting aids provide a list of test points in Table 4-A4-2. T h e A4 high p o w e r amplifier/DC bias board test point locations are shown in Figure 4-A4-1. Table 4-A4-2. A4 Test Points List Description Test Point Signal Name AC Voltage signal from the A5 board...
  • Page 115 4:Service Sheets TP7 TP8 TP9 TP1 TP2 TP3 TP4 T P 1 2 TP5 TP6 T P 1 5 G N D +50 - 5 0 VIN +8 GND VOUT HF O V L D 0-6263-0 0 4 2 6 4 - 0 0 4 2 4 5 - 0 •...
  • Page 116 NOTES 4-A4-4...

  • Page 117: A5 Signal Source Service Sheet

    4-12. A5 SIGNAL SOURCE SERVICE SHEET The A5 signal source board is covered by the exchange assembly program. T h e part num- ber of an A5 rebuilt exchange board is listed in Table 4-A5-1. Table 4-A5-1. A5 Replaceable Parts List Reference HP Part Qty.
  • Page 118 These troubleshooting aids provide a list of test points in Table 4-A5-2. T h e test point loca- tions are shown in Figure 4-A5-1. Table 4-A5-2. A5 Test Points List Signal Name Description Test Point Crystal oscillator signal A5TP1 DIV! N A5TP2 DI VOUT Signal divided the DIV I N signal by N...
  • Page 119 4 : S e r v i c e S h e e t s TP11 TP5 T P 3 T P 4 TP8 TP14 TP7 T P 1 2 TP10 +5A TP1 3 ATT GND ATTDAC - 9 + 9 T P 6 9 0 0 U T Q U A S I 9 0 I N ODEG...
  • Page 120 NOTES 4-A5-4...

  • Page 121: A6 Vector Ratio Detector Service Sheet

    4-13. A6 VECTOR RATIO DETECTOR SERVICE SHEET The A6 vector ratio detector board is covered by the exchange assembly program. T h e part number of an A6 rebuilt exchange board is listed in Table 4-A6-1. Table 4-A6-1. 6 Replaceable Parts List Reference HP Part Qty.
  • Page 122 Table 4-A6-3. A6 Test Points List Test Point Signal Name Description Crystal oscillator signal A6TP1 A6TP2 Ground Line A6TP3 Integration time signal A6TP4 End of measurement signal A6TP5 Input signal to the phase detector A6TP6 Input signal to the A-D converter A6TP7 Ground Line A6TP8...
  • Page 123 4:Service Sheets TP1 2 T P 2 T P 3 T P 4 T P 5 T P 6 T P 7 T P 8 T P 9 MEAS T P 1 0 I N T E G - 1 2 E O C + 1 2 TP1 1...
  • Page 124 NOTES 4-A6-4...

  • Page 125: A7 Digital Control Service Sheet

    Disable storing Correction data change Enable changing Disable changing Self test Normal position Self test position (refer to SECTION 3) The description for the bit 6 and 7 is discussed in Appendix G of the HP 4284A Opera- tion Manual. 4-A7-1...
  • Page 126 4-14-2. TROUBLESHOOTING AIDS Since the A7 board has been set up under the exchange program, when the A7 board is defective, you replace the A7 board. The board isolation procedure is given in SECTION 3. 4-14-3. REPLACEABLE PARTS LIST The replaceable parts for the A7 board are divided into two groups: a ROMIess A7 board and a set of programmed ROMs.
  • Page 127 Table 4-A7-2. A7 Digital Control Replaceable Parts Lists HP Part Reference Description Mfr Part Number Qty. Designator Number Code 0 4 2 8 4 - 6 6 6 5 7 DIGITAL CONTROL W / 0 ROM ?8480 0 4 2 8 4 - 6 9 6 5 7 DIGITAL CONTROL W / 0 ROM ( R E - B U I LT ) 28480 Version 1.10...
  • Page 128 l 0 0 0 0 0 0 0 0 0 m o r , A . • 0 0 . 0 0 0 0 0 O W 5. 9 etia " O S 1 0 0 0 0 0 0 0 0 0 0 0 0 0 §...
  • Page 129 A91 LCD module board. The A91 LCD module is the HP 4284A's display screen. 4-15-2. TROUBLESHOOTING AIDS Fuse A9F1 for the A90 board and is located on the A9 Keyboard. I f the HP 4284A display screen isn't active, check fuse A9F1 first.
  • Page 130 Table 4-A9/A13/A90/A91-1. A9 Keyboard Replaceable Parts List Reference HP Part City. Description Mfr Part Number Designator Number Code 04279-66559 KEY BOARD 28480 04279-66559 A9C1 0180-0197 CAPACITOR-FXD 2.2UF+-10% 20VDC TA 56289 150D225X9020A2 A9DS1 1990-0487 LED-LAMP LUM-INT=2MCD BVR=5V 28480 HLMP-1401 A9DS2 1990-0487 LED-LAMP LUM-INT=2MCD BVR=5V 28480 HLMP-1401...
  • Page 131 Table 4-A9/A13/A90/A91-2. A13 DC-AC Converter Replaceable Parts List Reference HP Part Qty. Description Mfr Part Number Designator Number Code DC-AC CONVERTER 0 4 2 7 8 - 6 6 5 # 3 0 4 2 7 8 - 6 6 5 1 3 28480 A13C1 CAPACITOR-FXD 2 2 U F + - 2 0 % 50VDC A L...
  • Page 132 Table 4-A9/A13/A90/A91-3. A90 and A91 Boards Replaceable Parts List Reference HP Part Mir Part Number Qty. Description Code Designator Number KEYBOARD/DISPLAY CONTROL 28480 0 4 2 7 8 - 6 6 5 9 0 0 4 2 7 8 - 6 6 5 9 0 28480 0 4 2 7 8 - 6 11 0 2 0 4 2 7 8 - 6 11 0 2...
  • Page 133 NOTES spa's ap 4-A9/A13/A90/A91-5...
  • Page 134 1 3 5 1 ( ( ( . a l l l V I 1411-01.-21115-7210632-011672121.51t vt2 LILYST35/111Wal-§_e_WILEgiffOg o G E ) 0 052 0 - 04 - 0 0 - R5 - 0 0' o • R7 - o R 6 -e 00' R1 - 0 00' R1 - 0 0 ' R 3 43AD .
  • Page 135 A 9 0 K E Y B O A R D / D I S P L A Y C O N T R O L MODULE A 9 KEYBOARD fsorrxcy S C O r - -0 1504742,1 ISOFTKE74 ISOFTKEY31 ISOFTNEY41 _ 5 I 059-1 id-,2 iz'S,t 9 re3_122 J2-6 <...

  • Page 136: A10 Memory Card Interface Service Sheet

    4-16. A10 MEMORY CARD INTERFACE SERVICE SHEET 4-16-1. CIRCUIT DESCRIPTION The A10 Memory card I/F board contains only connectors for the A7 CPU board and the Memory Card. 4-16-2. TROUBLESHOOTING AIDS No troubleshooting data is given for the A10 Memory Card I/F board. T h e pin assignment list gives the information needed for troubleshooting.
  • Page 137 Table 4-A10-1. Al 0 Memory Card Replaceable Parts Lists Reference HP Part Description Mfr Part Number Designation Number Code 2 8 4 8 0 0 4 2 7 8 - 6 6 5 1 0 0 4 2 7 8 - 6 6 5 1 0 MEM C A R D S O C K E T 1 6 2 9 9 C A C O 2 Z 5 U 1 0 4 M 0 5 0 A...
  • Page 138 o o s 0 0 0 g r 0 0 0 0 l l o p o . 79Q 9 0 _ 4 490_ .2 PAO 90_4, 0 M 0 61062 P i n No. 3 7 3 8 .5V_MEM_GARD 35 3 6 33 3 4 A l l...
  • Page 139 NOTES 4-A10-4...
  • Page 140 4-17. A11 MOTHERBOARD SERVICE SHEET 4-17-1. CIRCUIT DESCRIPTION The A l l Motherboard is the common bus for all other boards. 4-17-2. TROUBLESHOOTING AIDS No troubleshooting data is given for the. A l l Motherboard. T h e pin assignments on the A l l circuit side gives the information needed for troubleshooting, see Figure 4-A11-1.
  • Page 141 Table 4-A11-1. A l l Motherboard Replaceable Parts List HP Part Reference Qty. Description Part Number Designator Number Code A l l A l l MOTHERBOARD A l l 04284-66511 28480 0 4 2 8 4 - 6 6 5 11 1 2 5 1 - 4 9 3 8 CONNECTOR 3 - P I N M METRIC POST TYPE 28480...
  • Page 142 eeeeeeeeeeeeeeeeeeeeeeeeeeee 0 0 0 0 0 0 0 0 0 e e o e e o e 0 0 0 0 0 0 0 0 0 0 0 0 S1291IS 0!A Figure 4-A11-1. Al1 Motherboard Component Locations 4-A11-3...
  • Page 143 ❑ r = J2 J1 X9 X 8 X12 X 1 1 X18 X 1 7 Figure 4-Al 1-1. Pin Assginment on the A l 1 Circuit Side 4-A11-4...
  • Page 144 P I N A S S I G N M E N T S O N T H E All CIRCUIT SIDE (01401 LOAD LG111) 1 LGM) (GAO2 LORD LG. 2 IWO 3 .591 4 41591 .591. 4 .596 .591 5 .591 .591 5 .591...

  • Page 145: A20 Hp-Ib Interface Service Sheet

    4-18. A20 HP-IB INTERFACE SERVICE SHEET 4-18-1. CIRCUIT DESCRIPTION The A20 HP-IB Interface board handles all HP-IB interface functions. T h e HP-IB Interface board controls the handshaking between the Microprocessor and external HP-IB controlled equipment. 4-18-2. TROUBLESHOOTING AIDS The test points are listed in Table 4-A20-1. Table 4-A20-1.
  • Page 146 Table 4-A20-2. A20 HP-IB Interface Replaceable Parts List M f r Reference HP Part Qty. Description Mfr Part Number Designator Number 0 4 2 8 4 - 6 6 5 2 0 HP-IB I F 28480 0 4 2 8 4 - 6 6 5 2 0 CAPACITOR-FXD 4 7 0 U F 1 0 V A L 0 1 8 0 - 3 5 9 0 0 1 8 0 - 3 5 9 0...
  • Page 147 NOTES sways aD 4-A20-3...
  • Page 148 J 1 A J1E1 T P 2 T P 3 T P 4 G-R2 -ED 0 ' 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 c c o c c c c c c c O o c o s o c c c a c v -W1 - 0...
  • Page 149 A 2 0 H P - I B INTERFACE --L..um L5164 1 DM 1 1) j7A 1 01022) jiA r 01033 J1A 3 — IA 4— JtAo — II 7526000 nnow a — IS 010(8.11 ,, D1062) i e D1073) J183 /1/TACK X I S 2 7 (71 7146.

  • Page 150: A 3 0 Handler Interface (Opt.201) Service Sheet 4 - A

    A30W1 through A30W11 ) are set according to the pull up voltages used. F o r more detail information about the input/output signals and jumpers, refer to the handler interface opera- tion note in the HP 4284A operation manual. [ Peripheral Interface Adapters ] A30U13 and A30U14 are peripheral interface adapters ( PlAs ) which interface between the A7 CPU board and the A30 board.
  • Page 151 Table 3-1. A30 Handler Interface Replaceable Parts List Reference HP Part Qty. Description Mfr Part Number Number Code HANDLER I F (OPTION 2 0 1 ) 0 4 2 7 8 - 6 6 5 3 0 28480 0 4 2 7 8 - 6 6 5 3 0 0 1 8 0 - 3 6 0 2 CAPACITOR-FXD 2 2 U F + - 2 0 % 50VDC A L 28480...
  • Page 152 Table 3-1. A30 Handler Interface Replaceable Parts List Reference HP Part Description Mfr Part Number Qty. Code Designator Number 1820-2711 IC DRVR T T L L S L I N E DRVR OCTL 01295 SN74LS541N 1820-2711 IC DRVR T T L L S L I N E DRVR OCTL 01295 SN74LS541N IC GATE T T L L S NAND QUAD 2 - I N P...
  • Page 153 X I M M T M 6 6 6 6 6 n C S ..rn •-• ..••• < c C • c • • 3 , • • • • 1 4 1 4 O \ \ C A , •...
  • Page 154 A 3 0 # 2 0 1 H A N D L E R INTERFACE 51 102W E 1 1 . 0 0 7 1 I I 710 E X 1 . 0 C r i I . ,,,„ ,„. I I 72 z o , .

  • Page 155: A 3 1 Handler Interface (Opt.202) Service Sheet 4 - A

    4-20. A31 HANDLER INTERFACE (OPT.202) SERVICE SHEET 4-20-1. CIRCUIT DESCRIPTION The A31 handler interface board consists of photo couplers, and peripheral interface adapt- ers (PIAs). [ Photo Couplers ] Photo couplers A31U1 through A31U14 opto-isolate the input and output signals. T h e n timing of the input/output signals is determined by setting jumpers A31W3 through A31W13.
  • Page 156 Table 4-A31-2. A31 Handler Interface Replaceable Parts List (1/2) Reference HP Part Qty. Description Mfr Part Number Designator Number Code 04278-66531 HANDLER I F ( O P T I O N 2 0 2 ) 28480 04278-66531 CAPACITOR-FXD . 0 1 U F + - 1 0 % 100VDC CER 28480 0 1 6 0 - 4 8 3 2 0 1 6 0 - 4 8 3 2...
  • Page 157 Table 4-A31-2. A31 Handler Interface Replaceable Parts List (2/2) Reference HP Part M f r Qty. Description NUrPadNumber Designator Number 1820-2711 IC DRVR T T L L S L I N E DRVR OCTL 01295 SN74LS541N 1820-2075 IC TRANSCEIVER T T L L S BUS OCTL 01295 SN74LSOON IC TRANSCEIVER 1 7 1 L S BUS OCTL...
  • Page 158 g R g g R R g . g g R R R , i g g g g g R R o ..w u n u r k w , 0 4 , o R o m m o m m o m m c 9 . 1 . . 1 4 F i R E ' R g N t .
  • Page 159 A 3 1 #202 H A N D L E R INTERFACE .712101=2,==w 1.124 -Lt>a. . . , , ..\ IJIS MOW" ) .11A MOW" ' 1 "---(1n; " a 20" 0 1 P a .

  • Page 160: A 4 0 Scanner Interface (Opt.301) Service Sheet 4 - A

    4-21. A40 SCANNER INTERFACE (OPT.301) SERVICE SHEET 4-21-1. CIRCUIT DESCRIPTION The A40 scanner interface board consists of photo couplers, EEPROMs, Static RAMs, and a peripheral interface adapter ( PIA ). [ Photo Couplers ] When the scanner interface connector on the rear panel is used to synchronize an external scanner, the input/output signals are opto-isolated by opto-couplers A40U3, A40U4, A40U5, and A40U6.
  • Page 161 4-21-3. REPLACEABLE PARTS LISTS The replaceable parts for the A40 Scanner Interface Board are listed in Table 4-A40-2. 4-21-4. COMPONENT LOCATIONS The component locations on the A40 scanner interface board and the board connector pin assignments are shown in Figure 4-A40-1. 4-21-5.
  • Page 162 Table 4-A40-2. A40 Scanner Interface Replaceable Parts list (1/2) Reference HP Part Qty. Description Part Number Designator Number Code 0 4 2 7 8 - 6 6 5 4 0 SCANNER INTERFACE (OPTION 3 0 1 ) 28480 0 4 2 7 8 - 6 6 5 4 0 0 1 8 0 - 3 3 6 3 CAPACITOR-FXD 2 2 U F + - 2 0 % 25VDC A L 28480...
  • Page 163 Table 4-A40-2. A40 Scanner Interface Replaceable Parts list (2/2) Reference HP Part Description Part Number Designator Number Code IC F F T T L L S D -TYPE POS-EDGE-TRIG 1 8 2 0 - 111 2 01295 SN74LS74AN 1818-3801 IC NMOS 6 5 5 3 6 ( 6 4 K ) ELEC-ER-PROM 3 0 0 -NS S4013 HN58064P-30 1 8 2 0 - 1 2 0 0...
  • Page 164 NOTES 4-A40-5...
  • Page 165 o E j o (ir:) g co) Pin No. 040X10 040018 LGND LGND :0:0 LGND LGND LGND 0 G - I n - 0 o [ g i o o [ n o 1010 0 G - O n i - 0 i°:13 0 G - 6 t O O , 0 , 0...
  • Page 167 A 4 0 S C A N N E R I N T E R F A C E 2 OF 3 From EXT.DCU 0 1 of 3 Ai l cl C: 6514 2 0171615 ‘\1\, I 22 2 2 1 2 1 0 I 1 I 1 2 1 1 1 3 1 4 1 5 16 9 1 0 1 1 12113 141516...
  • Page 168 A 4 0 S C A N N E R I N T E R F A C E 3 OF 3 0011:151 PA,1:15, 11010,15) f 3 I n O : 151 0 \ l SAM .o \ 1 80)1) 10 N, 2 06)21 \ 2 06(2) \ 3 84131 8...

  • Page 169: Appendix A. M A N U A L Changes

    A-2. MANUAL CHANGES To adapt this manual to your HP 4284A, refer to Tables A and B, and make all of the manual changes listed opposite your instrument's serial number and ROM-based firm- ware's version.
  • Page 170 NOTES...
  • Page 171 REGIONAL SALES AND SUPPORT OFFICES For more information about Agilent Technologies test and measurement products, applications, services, and for a current sales office listing, visit our web site: http://www.agilent.com/find/tmdir. You can also contact one of the following centers and ask for a test and measurement sales representative.

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