Datron 1062 - Page 4

ii
Section
Title
Page
3.2.3.6
1st
Null
Detector
25
3. 2.3.7
2nd
Null
Detector
25
3. 2. 3.
8
Reset Period
25
3.3
OPTION
10
AC
ASSEMBLY
27
3.3.1
General
Principles
27
3.3.2
Preamplifier
and
Scaling
27
3.3.3 RMS
Converter
28
3.3.4 High Frequency Compensation
29
3.3.5 Frequency
Detection
29
3.3.6 Test
29
A3.3
OPTION
12 AC
ASSEMBLY
A27
A3.
3.1
General Principles
A27
A3.3.2
Preamplifier
and
Scaling
A27
A3.3.
3
RMS
Converter
A28
A3.
3.4 High
Frequency Compensation
A29
A3.3. 5
Frequency Detection
A29
A3.3.6
Test
A29
3.4 OHMS
ASSEMBLY
30
3.4.1
Low
Drift Voltage Follower
30
3.4.2 Constant
Current
Source
30
3.4.3 Test
31
3.5
CURRENT
ASSEMBLY
31
3.5.1 Current Measurements
32
3.5.2 Test
32
3.6 REAR INPUT/RATIO INPUT
32
3.6.1 General
32
3.6.2 Front Panel/Rear Panel Input
32
3.6.3 Ratio
32
3.6.4
Test
33
3.7 ANALOG OUTPUT
33
3.7.1 General
33
3.7.2 Description
33
3.8
DIGITAL
ASSEMBLY 33
3.8.1 Processor
and Memory
33
3. 8. 1.1 Software
Overview 34
3.8.1 .2 The
Two-Phase Clock
35
3.8.1.3 RAM/ROM
Circuit 36
3.8.2
CMOS Address
Decode and Input/Output
Circuits 36
3.8.3 Analog
to Digital
Conversion (Digital Section)
39
3.8.3.1 General Principle
39
3.8.3.2
Preset Procedure
39
3. 8. 3.
3
A-D
Measurement Sequence
41
3.
8.
3.
4 Master Clock
and Line Locking
41