Keithley 177 Instruction Manual page 4

4.2.2
A/D
Converter 4-2
4.2.3
Range
Switching 4-2
4.3
AC
Converter 4-2
4.3.1 Scaling
4-2
4.3.2
AC
Conversion
4-2
4.3.3
AC
Current
Measurements
4-2
4.4
DC
Signal
Conditioning 4-2
4.4.1 Input
Attenuation 4-3
4.4.2
Chopper 4-3
4.5
Ohms
Conversion
4-4
4.5.1 Floating Current
Source 4-4
4.5.2
Chopper
4-4
4.5.3
Adjustments and
Input
Overload
Protection
4-4
4.6
Analog Output 4-4
4.7 Clock
4-4
4.8
A/D
Converter 4-4
4.8.1
Auto-Zero
4-5
4.8.2 Signal-Interface
4-5
4.8.3 Reference-Integrate
4-5
4.9
Display
4-6
4.10
AC
Power Supply 4-6
4.11
Model 1788
Battery Pack
4-6
4.11.1 Battery
Charging
Circuit
4-6
4.11.2
Battery Operation
and
Shutdown
Circuit
4-6
SECTION
5- MAINTENANCE
5.1
Introduction 5-1
5.2
Recommended
Test
Equipment
5-1
5.3
Environmental Conditions 5-1
5.4
Calibration
Procedure 5-1
5.4.1 Calibration
Shield
Installation
5-1
5.4.2
Warm-Up
5-1
5.4.3 Calibration Instructions
5-1
5.5
Troubleshooting
5-2
5.6
Troubleshooting Procedure
5-2
5.6.1 Calibration
Shield/ Battery Pack Removal
5-2
5.6.2 Line
Power
5-4
5.6.3 Battery
Power 5-4
5.6.4 Display
and
A/D
Converter 5-4
5.6.5
AC
Converter
5-4
5.6.6
Chopper
Amplifier
and
Ohms
Source 5-4
5.6.7
Current
Shunts 5-4
5.7
Front Panel
ZERO Knob
Removal and Replacement 5-4
5.8
Fuse
Replacement 5-5
5.9
Model 1788
Battery Pack
Installation
5-6
SECTION
6-REPLACEABLE PARTS
6.1
Introduction
6-1
6.2
Parts
List
6-1
6.3
Ordering Information 6-1
6.4 Factory Service
6-1
6.5
Component
Location
Drawings
6-1
6.6
Schematic Diagrams
6-1
6.7
Maintenance
Kit
6-1