BRUEL & KJAER 5998 Service Manual
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BRUEL & KJAER 5998 Service Manual

BRUEL & KJAER 5998 Service Manual

Reciprocity calibration apparatus
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Technical
Documentation
Reciprocity Calibration Apparatus
Type 5998
Service Manual
Brüel
& Kjær
BI 5044 –11
B
K
7/6-'89

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Summary of Contents for BRUEL & KJAER 5998

  • Page 1 Technical Documentation Reciprocity Calibration Apparatus Type 5998 Service Manual Brüel & Kjær 7/6-'89 BI 5044 –11...
  • Page 2 Reciprocity Calibration Apparatus Type 5998 Service Manual Valid from serial number 2 021 566 June 1998 Brüel & Kjær Reciprocity Calibration Apparatus Type 5998 BI 5044 – 11 Service Manual...
  • Page 3 All rights reserved. No part of this publication may be reproduced or distributed in any form or by any means without prior consent in writing from Brüel & Kjær Sound and Vibration Measurement A/S, Nærum, Denmark. 0 − 2 Reciprocity Calibration Apparatus Type 5998 Brüel & Kjær Service Manual...

  • Page 4: Table Of Contents

    ................3 – 10 Generator Input....................3 – 11 Reference Signal ....................3 – 12 Polarization Voltage ..................... 3 – 13 Transmitter Unit ZE 0796..................3 – 15 0 − 3 BI 5044 –11 Reciprocity Calibration Apparatus Type 5998 Service Manual...
  • Page 5 Schematic – ZH 0453 Backplane ................7 – 19 PCB Layout – ZH 0453 Backplane ................7 – 20 Board XM 0458 – (component side) ..............7 – 20 0 − 4 Reciprocity Calibration Apparatus Type 5998 Brüel & Kjær Service Manual...
  • Page 6 Board XC 2882 – (solder side) ................7 – 30 Schematic – ZH 0456 Polarization Voltage Selector..........7 – 30 Parts List – ZH 0456 Polarization Voltage Selector ..........7 – 30 0 − 5 BI 5044 –11 Reciprocity Calibration Apparatus Type 5998 Service Manual...
  • Page 7 0 − 6 Reciprocity Calibration Apparatus Type 5998 Brüel & Kjær Service Manual...

  • Page 8: General Information

    Chapter 1 General Information 1 − 1 BI 5044 –11 Reciprocity Calibration Apparatus Type 5998 Service Manual...

  • Page 9: Edition Number

    Note which is dealt with in Chapter Safety Type 5998 and the equipment included with it has been designed and tested in accordance with IEC Publication 348, Safety Requirements for Electronic Measur- ing Apparatus, and has been supplied in safe condition.

  • Page 10: Special Tools And Equipment

    Chapter 1 — General Information Special Tools and Equipment Special Tools and Equipment To perform the checking procedure, troubleshooting and adjustment of Type 5998, the following special tools and equipment must be available: Type 1049/51 Sine Generator Type 2610/2636 Measuring Amplifier...

  • Page 11: Introduction To Type 5998

    Introduction to Type 5998 Introduction to Type 5998 The electronics of Type 5998 are mains powered and built into a robust casing which has two microphone channels, one of which is used for the transmitter and the other for the receiver. The instrument also includes a high-precision 200 V po- larization voltage supply.
  • Page 12 B sockets on or off. The reference signal is on when the green LED to the right of the pushkey is lit. Local: Pushkey for setting Type 5998 to local mode, for manual control. There is no IEEE command for Local LockOut. Remote: Green LED which lights when Type 5998 is being operated remotely, for example when using the measurement program.

  • Page 13: Back Panel

    Floating Generator Input Fuses: 90-140V : T 160mA 180-254V : T 80mA 970558e Fig.1.2 Back panel of Type 5998 Mains Connector: On/off switch, mains connector and fuses. Signal GND: Two-position sliding switch for selection of Chassis or Floating signal ground.

  • Page 14: Lemo Pin Connections

    Reference on: Signal Output (i.e., connected to pin 4) 960472e Reference off: Generator Signal Power Supply, Positive Power Supply, Negative Fig.1.3 Channel A Receiver and Channel B Transmitter connections 1 − 7 BI 5044 –11 Reciprocity Calibration Apparatus Type 5998 Service Manual...
  • Page 15 Chapter 1 — General Information Introduction to Type 5998 1 − 8 Reciprocity Calibration Apparatus Type 5998 Brüel & Kjær Service Manual...

  • Page 16: Service Note

    Chapter 2 Service Note 2 − 1 BI 5044 –11 Reciprocity Calibration Apparatus Type 5998 Service Manual...

  • Page 17: On-Line Editions Of The Service Manual

    From time to time some minor changes may be made to improve the performance and serviceability of Type 5998. All information concerning these changes, or any other changes to the service manual, are included in the latest version of the on- line source document.

  • Page 18: Checking Procedure

    Chapter 3 Checking Procedure 3 − 1 BI 5044 –11 Reciprocity Calibration Apparatus Type 5998 Service Manual...

  • Page 19: Introduction

    WARNING: The polarization voltage terminals on the front panel produce up to 200VDC. The following Checking Procedure for Type 5998 is a subset of the final factory test. The Checking Procedure verifies that the functionality of Type 5998 is correct.

  • Page 20: Checking Procedure

    Chapter 3 — Checking Procedure Checking Procedure Checking Procedure 3.3.1 Gain and Frequency Response, Channel A 1. Set the front panel controls on Type 5998 as follows: Control Setting Gain Output HP Filter Ref. Polarization Voltage 2. Apply 1 V at 1 kHz to the Channel A Receiver input using cable AO 0479.

  • Page 21: Gain And Frequency Response, Channel B

    Chapter 3 — Checking Procedure Checking Procedure 3.3.2 Gain and Frequency Response, Channel B 1. Set the front panel controls on Type 5998 as follows: Control Setting Gain Output HP Filter Ref. Polarization Voltage 2. Apply 1 V at 1 kHz to the Channel B Transmitter input using cable AO 0479.

  • Page 22: Maximum Voltage And Distortion, Channel A

    Chapter 3 — Checking Procedure Checking Procedure 3.3.3 Maximum Voltage and Distortion, Channel A 1. Set the front panel controls on Type 5998 as follows: Control Setting Gain Output HP Filter Ref. Polarization Voltage 2. Apply about 2.2 V at 1 kHz to the Channel A Receiver input using cable AO 0479.

  • Page 23: Maximum Voltage And Distortion, Channel B

    Chapter 3 — Checking Procedure Checking Procedure 3.3.4 Maximum Voltage and Distortion, Channel B 1. Set the front panel controls on Type 5998 as follows: Control Setting Gain Output HP Filter Ref. Polarization Voltage 2. Apply about 2.2 V at 1 kHz to the Channel B Transmitter input using cable AO 0479.

  • Page 24: Noise, Channel A

    Chapter 3 — Checking Procedure Checking Procedure 3.3.5 Noise, Channel A 1. Set the front panel controls on Type 5998 as follows: Control Setting Gain Output HP Filter Ref. Polarization Voltage 2. Terminate the Channel A Receiver input with a 50 Ω resistor between pins 2 and 4 of the Lemo connector.

  • Page 25: Noise, Channel B

    Chapter 3 — Checking Procedure Checking Procedure 3.3.6 Noise, Channel B 1. Set the front panel controls on Type 5998 as follows: Control Setting Gain Output HP Filter Ref. Polarization Voltage 2. Terminate the Channel B Transmitter input with a 50 Ω resistor between pins 2 and 4 of the Lemo connector.

  • Page 26: High Pass Filters, Channel A

    Chapter 3 — Checking Procedure Checking Procedure 3.3.7 High Pass Filters, Channel A 1. Set the front panel controls on Type 5998 as follows: Control Setting Gain Output HP Filter Ref. Polarization Voltage 2. Apply 1 V at 1 Hz to the Channel A Receiver input using cable AO 0479.

  • Page 27: High Pass Filters, Channel B

    Chapter 3 — Checking Procedure Checking Procedure 3.3.8 High Pass Filters, Channel B 1. Set the front panel controls on Type 5998 as follows: Control Setting Gain Output HP Filter Ref. Polarization Voltage 2. Apply 1 V at 1 Hz to the Channel B Transmitter input using cable AO 0479.

  • Page 28: Generator Input

    Chapter 3 — Checking Procedure Checking Procedure 3.3.9 Generator Input 1. Set the front panel controls on Type 5998 as follows: Control Setting Gain Output Gen. HP Filter Ref. Polarization Voltage 2. Apply 3.5 V at 1 kHz to the Generator Input BNC socket using cable AO 0479.

  • Page 29: 3.3.10 Reference Signal

    Chapter 3 — Checking Procedure Checking Procedure 3.3.10 Reference Signal 1. Set the front panel controls on Type 5998 as follows: Control Setting Gain Output Ref. HP Filter Ref. Polarization Voltage 2. Apply 3.5 V at 1 kHz to the Generator Input BNC socket using cable AO 0479.

  • Page 30: 3.3.11 Polarization Voltage

    7 mA and can give an electric shock. Do not touch conductive parts connected to the 200 V terminal. When connecting a voltmeter, make the voltmeter connections be- fore connecting to Type 5998. When disconnecting, disconnect from Type 5998 first. 4. Connect the terminal to the DVM LO input.
  • Page 31 *For example, if your DVM has an input impedance of 10 MΩ, the display would read 21.5V when the polarization voltage is 28 V and the output impedance is 3.0 MΩ (using simple potential divider theory). 3 − 14 Reciprocity Calibration Apparatus Type 5998 Brüel & Kjær Service Manual...

  • Page 32: 3.3.12 Transmitter Unit Ze 0796

    Chapter 3 — Checking Procedure Checking Procedure 3.3.12 Transmitter Unit ZE 0796 1. Set the front panel controls on Type 5998 as follows: Control Setting Gain Output HP Filter Ref. Polarization Voltage 2. Connect Transmitter Unit ZE 0796 to the Channel B Transmitter socket.
  • Page 33 Chapter 3 — Checking Procedure Checking Procedure 3 − 16 Reciprocity Calibration Apparatus Type 5998 Brüel & Kjær Service Manual...

  • Page 34: Calibration

    Chapter 4 Calibration 4 − 1 BI 5044 –11 Reciprocity Calibration Apparatus Type 5998 Service Manual...

  • Page 35: Polarization Voltage

    Chapter 4 — Calibration Polarization Voltage Polarization Voltage The only part of Type 5998 that requires regular calibration is the setting of the polarization voltage. The Polarization Voltage should be adjusted to 200 V on the front panel of Type 5998.

  • Page 36: Theory Of Operation

    Chapter 5 Theory of Operation 5 − 1 BI 5044 –11 Reciprocity Calibration Apparatus Type 5998 Service Manual...

  • Page 37: Introduction

    Signal Routing within Type 5998 Inside Type 5998 the signals passes through a high-pass filter with selectable low- frequency roll-off frequencies (1 Hz, 20 Hz, 100 Hz). Selection is done via the front panel or the IEEE–488 bus. The output amplifiers have variable gain (0 to 50 dB in 10 B steps).

  • Page 38: Grounding Considerations

    Polarisation Voltage is selected. Overload Indication Type 5998 is designed to operate with the same maximum allowable voltage as the transmitter and receiver units. Therefore the overload indicators, sensing both in- put and output of both channels, also indirectly monitors the transmitter and re- ceiver units.

  • Page 39: Polarization Voltage

    5.2.3 Manual, Interface and PC Control Manual Control When you switch Type 5998 on, it is in local mode and can be controlled manually. section 1.5.1 section 1.5.2 for a description of the front and back panel controls.

  • Page 40: Pc Control

    The current state of the reciprocity calibration apparatus is indicated by the Re- mote LED on the front panel. Commands Type 5998 is remotely controlled by sending a string which sets all required param- eters. If a parameter is not included, the value is not changed. The commands are listed in Table 5.2.
  • Page 41 30 dB 40 dB 50 dB Reference Signal Reference Off* Reference On High-pass Filter 1 Hz* 20 Hz 100 Hz * Default setting Table 5.2 IEEE commands 5 − 6 Reciprocity Calibration Apparatus Type 5998 Brüel & Kjær Service Manual...

  • Page 42: Block Diagram

    Chapter 5 — Theory of Operation Block Diagram Block Diagram 5 − 7 BI 5044 –11 Reciprocity Calibration Apparatus Type 5998 Service Manual...
  • Page 43 5 − 8 Reciprocity Calibration Apparatus Type 5998 Brüel & Kjær Service Manual...

  • Page 44: Mechanical Parts

    Chapter 6 Mechanical Parts 6 − 1 BI 5044 –11 Reciprocity Calibration Apparatus Type 5998 Service Manual...

  • Page 45: Mechanical Drawing

    Each item has both an order number and a drawing placement number. When • ordering, refer to the order number only (e.g. YK 1320) Ignore the drawing placement numbers (numbers in circles). • 6 − 2 Reciprocity Calibration Apparatus Type 5998 Brüel & Kjær Service Manual...
  • Page 46 20 0V DF 7059 YO 0439 FA 0869 DK 0931 YS 9494 FE 0015 (Complete: FE 0023) DS 0647 DF 7060 970062e Fig.6.1 Exploded view of Type 5998 BI 5044 –11 Reciprocity Calibration Apparatus Type 5998 6 – 3 Service Manual...

  • Page 47: Electrical Diagrams

    Chapter 7 Electrical Diagrams 7 − 1 BI 5044 –11 Reciprocity Calibration Apparatus Type 5998 Service Manual...

  • Page 48: Repair Policy

    Repair Policy Repair Policy Type 5998 and Microphone Fixture UA 1412 and accessories are NOT part of the FRP scheme. therefore, should Type 5998 fail the checking procedure, you must repair the instrument locally or return it to Brüel & Kjær, Nærum.

  • Page 49: Schematic - Zd 0817 Control Unit

    960715 APPROVAL DEPT. DATE SERIALNUMBER VERSION 8349 960715 TYPE DRAWING NUMBER PCB NUMBER SHEET NUMBER DATE FILE NAME SHEET 5998 ZD0817 XM0454 8-20-1996_8:37 ZD0817 Brüel & Kjær Reciprocity Calibration Apparatus Type 5998 7 – 3 BI 5044 –11 Service Manual...

  • Page 50: Ieee-488 Sub-Section

    970110 APPROVAL DEPT. DATE SERIALNUMBER VERSION 8349 970110 TYPE DRAWING NUMBER PCB NUMBER SHEET NUMBER DATE FILE NAME SHEET 5998 ZD0817 XM0454 2-18-1997_13:43 IEEE Brüel & Kjær Reciprocity Calibration Apparatus Type 5998 7 – 4 BI 5044 –11 Service Manual...

  • Page 51: Schematic - Zd 0817 Control Unit

    960715 APPROVAL DEPT. DATE SERIALNUMBER VERSION 8349 960715 TYPE DRAWING NUMBER PCB NUMBER SHEET NUMBER DATE FILE NAME SHEET 5998 ZD0817 XM0454 7-16-1996_11:15 GAIN Brüel & Kjær Reciprocity Calibration Apparatus Type 5998 7 – 5 BI 5044 –11 Service Manual...

  • Page 52: Schematic - Zd 0817 Control Unit

    960715 APPROVAL DEPT. DATE SERIALNUMBER VERSION 8349 960715 TYPE DRAWING NUMBER PCB NUMBER SHEET NUMBER DATE FILE NAME SHEET 5998 ZD0817 XM0454 7-16-1996_11:16 OUTPUT Brüel & Kjær Reciprocity Calibration Apparatus Type 5998 7 – 6 BI 5044 –11 Service Manual...

  • Page 53: Schematic - Zd 0817 Control Unit

    960715 APPROVAL DEPT. DATE SERIALNUMBER VERSION 8349 960715 TYPE DRAWING NUMBER PCB NUMBER SHEET NUMBER DATE FILE NAME SHEET 5998 ZD0817 XM0454 7-16-1996_11:17 FILTER Brüel & Kjær Reciprocity Calibration Apparatus Type 5998 7 – 7 BI 5044 –11 Service Manual...

  • Page 54: Pcb Layout - Zd 0817 Control Unit

    Chapter 7 — Electrical Diagrams PCB Layout – ZD 0817 Control Unit Board XM 0454 Brüel & Kjær Reciprocity Calibration Apparatus Type 5998 7 – 8 BI 5044 –11 Service Manual...

  • Page 55: Parts List - Zd 0817 Control Unit

    BAS32L IEEE.1 VD6641 74HC193 GAIN.1 JP9601 J96ABC_3 ZD0817.1 VD6641 74HC193 FILTER.1 JP2406 BERG24 ZD0817.1 VD6801 74HCT14 IEEE.1 OUTPUT.1 ZD0817.1 VD6801 74HCT14 IEEE.1 OUTPUT.1 ZD0817.1 Brüel & Kjær Reciprocity Calibration Apparatus Type 5998 7 – 9 BI 5044 –11 Service Manual...

  • Page 56: Schematic - Ze 0792 Receiver Unit

    961204 APPROVAL DEPT. DATE SERIALNUMBER VERSION 8349 961204 TYPE DRAWING NUMBER PCB NUMBER SHEET NUMBER DATE FILE NAME SHEET 5998 ZE0792 XM0456 5-15-1997_11:26 ZE0792 Brüel & Kjær Reciprocity Calibration Apparatus Type 5998 7 – 10 BI 5044 –11 Service Manual...

  • Page 57: Pcb Layout - Ze 0792 Receiver Unit

    Chapter 7 — Electrical Diagrams PCB Layout – ZE 0792 Receiver Unit Board XM 0456 Brüel & Kjær Reciprocity Calibration Apparatus Type 5998 7 – 11 BI 5044 –11 Service Manual...

  • Page 58: Parts List - Ze 0792 Receiver Unit

    RC3000 METAL ZE0792.1 JP0333 BERG3 ZE0792.1 RC3301 METAL ZE0792.1 JP0333 BERG3 ZE0792.1 RC3430 METAL ZE0792.1 JP0333 BERG3 ZE0792.1 RC3601 METAL ZE0792.1 RC3601 METAL ZE0792.1 Brüel & Kjær Reciprocity Calibration Apparatus Type 5998 7 – 12 BI 5044 –11 Service Manual...

  • Page 59: Schematic - Ze 0793 Transmitter Unit

    8349 961204 APPROVAL DEPT. DATE SERIALNUMBER VERSION 8349 961204 TYPE DRAWING NUMBER PCB NUMBER SHEET NUMBER DATE FILE NAME SHEET 5998 ZE0793 XM0456 5-15-1997_13:15 ZE0793 Brüel & Kjær Reciprocity Calibration Apparatus Type 5998 7 – 13 BI 5044 –11 Service Manual...

  • Page 60: Pcb Layout - Ze 0793 Transmitter Unit

    Chapter 7 — Electrical Diagrams PCB Layout – ZE 0793 Transmitter Unit Board XM 0456 Brüel & Kjær Reciprocity Calibration Apparatus Type 5998 7 – 14 BI 5044 –11 Service Manual...

  • Page 61: Parts List - Ze 0793 Transmitter Unit

    RC3168 METAL 49,9 ZE0793.1 JP0333 BERG3 ZE0793.1 RC4377 METAL 6,19K ZE0793.1 JP0333 BERG3 ZE0793.1 RC4346 METAL 2,94K ZE0793.1 JP0333 BERG3 ZE0793.1 RC3000 METAL ZE0793.1 Brüel & Kjær Reciprocity Calibration Apparatus Type 5998 7 – 15 BI 5044 –11 Service Manual...

  • Page 62: Schematic - Zg 0395 Power Supply

    970110 APPROVAL DEPT. DATE SERIALNUMBER VERSION 8349 970110 TYPE DRAWING NUMBER PCB NUMBER SHEET NUMBER DATE FILE NAME SHEET 5998 ZG0395 XM0457 2-18-1997_13:05 ZG0395 Brüel & Kjær Reciprocity Calibration Apparatus Type 5998 7 – 16 BI 5044 –11 Service Manual...

  • Page 63: Pcb Layout - Zg 0395 Power Supply

    Chapter 7 — Electrical Diagrams PCB Layout – ZG 0395 Power Supply Board XM 0457 Brüel & Kjær Reciprocity Calibration Apparatus Type 5998 7 – 17 BI 5044 –11 Service Manual...

  • Page 64: Parts List - Zg 0395 Power Supply

    ZG0395.1 KORTSLUT kortslut255 ZG0395.1 PG2516 TRIMMER ZG0395.1 KORTSLUT kortslut255 ZG0395.1 RF3499 METAL 4K99 ZG0395.1 KORTSLUT kortslut255 ZG0395.1 RF3499 METAL 4K99 ZG0395.1 JP0221 BERG2 ZG0395.1 Brüel & Kjær Reciprocity Calibration Apparatus Type 5998 7 – 18 BI 5044 –11 Service Manual...

  • Page 65: Schematic - Zh 0453 Backplane

    960904 APPROVAL DEPT. DATE SERIALNUMBER VERSION 8349 960904 TYPE DRAWING NUMBER PCB NUMBER SHEET NUMBER DATE FILE NAME SHEET 5998 ZH0453 XM0458 5-15-1997_13:53 ZH0453 Brüel & Kjær Reciprocity Calibration Apparatus Type 5998 7 – 19 BI 5044 –11 Service Manual...

  • Page 66: Pcb Layout - Zh 0453 Backplane

    Chapter 7 — Electrical Diagrams PCB Layout – ZH 0453 Backplane Board XM 0458 – (component side) Brüel & Kjær Reciprocity Calibration Apparatus Type 5998 7 – 20 BI 5044 –11 Service Manual...

  • Page 67: Pcb Layout - Zh 0453 Backplane

    Chapter 7 — Electrical Diagrams PCB Layout – ZH 0453 Backplane Board XM 0458 – (solder side) Brüel & Kjær Reciprocity Calibration Apparatus Type 5998 7 – 21 BI 5044 –11 Service Manual...

  • Page 68: Parts List - Zh 0453 Backplane

    JJ6400 J64AB_2 ZH0453.1 JJ5103 BNC_EMC ZH0453.1 JJ5103 BNC_EMC ZH0453.1 JJ5103 BNC_EMC ZH0453.1 JJ5103 BNC_EMC ZH0453.1 JJ5103 BNC_EMC ZH0453.1 JP2406 BERG24 ZH0453.1 JP1034 MOLEX ZH0453.1 Brüel & Kjær Reciprocity Calibration Apparatus Type 5998 7 – 22 BI 5044 –11 Service Manual...

  • Page 69: Schematic - Zh 0454 Keyboard

    960712 APPROVAL DEPT. DATE SERIALNUMBER VERSION 8349 960712 TYPE DRAWING NUMBER PCB NUMBER SHEET NUMBER DATE FILE NAME SHEET 5998 ZH0454 XM0459 7-15-1996_11:39 ZH0454 Brüel & Kjær Reciprocity Calibration Apparatus Type 5998 7 – 23 BI 5044 –11 Service Manual...

  • Page 70: Pcb Layout - Zh 0454 Keyboard

    Chapter 7 — Electrical Diagrams PCB Layout – ZH 0454 Keyboard Board XM 0459 – (component side) Brüel & Kjær Reciprocity Calibration Apparatus Type 5998 7 – 24 BI 5044 –11 Service Manual...

  • Page 71: Pcb Layout - Zh 0454 Keyboard

    Chapter 7 — Electrical Diagrams PCB Layout – ZH 0454 Keyboard Board XM 0459 – (solder side) Brüel & Kjær Reciprocity Calibration Apparatus Type 5998 7 – 25 BI 5044 –11 Service Manual...

  • Page 72: Parts List - Zh 0454 Keyboard

    QV4014 GREEN_LED ZH0454.1 NT0214 SWITCH ZH0454.1 QV4014 GREEN_LED ZH0454.1 NT0160 SWITCH ZH0454.1 QV4014 GREEN_LED ZH0454.1 NT0160 SWITCH ZH0454.1 QV4014 GREEN_LED ZH0454.1 JP2406 BERG24 ZH0454.1 Brüel & Kjær Reciprocity Calibration Apparatus Type 5998 7 – 26 BI 5044 –11 Service Manual...

  • Page 73: Schematic - Zh 0455 Multiplexer

    960614 APPROVAL DEPT. DATE SERIALNUMBER VERSION 8349 960614 TYPE DRAWING NUMBER PCB NUMBER SHEET NUMBER DATE FILE NAME SHEET 5998 ZH0455 XC2881 6-19-1996_14:32 ZH0455 Brüel & Kjær Reciprocity Calibration Apparatus Type 5998 7 – 27 BI 5044 –11 Service Manual...

  • Page 74: Pcb Layout - Zh 0455 Multiplexer

    Chapter 7 — Electrical Diagrams PCB Layout – ZH 0455 Multiplexer Board XC 2881 Brüel & Kjær Reciprocity Calibration Apparatus Type 5998 7 – 28 BI 5044 –11 Service Manual...

  • Page 75: Parts List - Zh 0455 Multiplexer

    OC0115 RELAY ZH0455.1 OC0115 RELAY ZH0455.1 OC0115 RELAY ZH0455.1 QV0237 1N4004 ZH0455.1 QV0237 1N4004 ZH0455.1 QV0237 1N4004 ZH0455.1 QV0237 1N4004 ZH0455.1 JP6400 J64AB_1 ZH0455.1 Brüel & Kjær Reciprocity Calibration Apparatus Type 5998 7 – 29 BI 5044 –11 Service Manual...

  • Page 76: Pcb Layout - Zh 0456 Polarization Voltage

    Board XC 2882 – (solder side) Parts List – ZH 0456 Polarization Voltage Selector Refdes B&K-nr. Device Value Pkg.type Schematic NN0127 SWITCH ZH0456.1 AQ0624 BERG4 ZH0456.1 Brüel & Kjær Reciprocity Calibration Apparatus Type 5998 7 – 30 BI 5044 –11 Service Manual...

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