Racal Instruments 1994 Service Manual page 13

TABLE OF CONTENTS
(Cont<d)
Section
Title
Page
4.5 Interface
Message Repertoire and Response
4-17
4.5.1
Introduction
4-17
4.5.2
Listen
and Talk Address
Commands
4-18
4.5.3
Addressed and Universal
Commands
4-18
4.6
GPIB
Operating Modes
4-20
4.6.1
Introduction
4-20
4.6.2
Talk-Only
Mode
4-20
4.6.3
Addressed
Mode
4-21
4.7
Output Message Format
(Talker) 4-21
4.7.1
Introduction
4-21
4.7.2
High-Speed Data Output
Mode
4-23
4.8
Service Request (SRQ)
4-27
4.9 Status
Byte
4-27
4.10 Input
Commands
(Listener) 4-28
4.10.1 Introduction
4-28
4.10.2
Device-Dependent
Commands
4-29
5
GENERAL THEORY
OF OPERATION
5-1
5.1
Introduction
5-1
5.2
Functional Blocks
5-1
5.3
Theory
of
Operation by Block
5-3
5.3.1
Channel
A/B
Block
5-3
5.3. 1.1
Functional Description
5-3
5.3.1
.2
Circuit Description 5-4
5.3.2
Channel
C
Block
5-5
5. 3.
2.1
Functional Description
5-5
5.3.2.2 Circuit Description
5-6
5.3.3
Measurement
Block 5-6
5.3
.3.1
Functional Description
5-6
5.3
.3 .2
Circuit Description 5-8
5.3.4
Display Block 5-10
5. 3.
4.1 Functional Description 5-10
5. 3. 4. 2
Circuit Description 5-11
5.3.5
Keyboard
Block
5-12
5. 3. 5.1
Functional Description 5-12
5.3.5.2 Circuit Description 5-13
5.3.6
Microprocessor Block
5-14
5.3.6.1
Functional Description 5-14
5.3.
6.
2
Circuit Description 5-15
5.3.7
Standby and IRQ Block 5-16
5.3.7.
1
Functional Description
5-16
5. 3. 7. 2 Circuit Description
5-17
5.3.8
Power
Supply Block
5-18
5.3.8.1 Functional Description
5-18
5.3. 8.2
Circuit Description
5-19
5.3.9
Internal
Frequency Standard Block
5-20
5. 3. 9.1 Functional Description 5-20
5. 3. 9.2 Circuit Description 5-20
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