Keithley 177 Instruction Manual page 5

LIST OF FIGURES
Figure
1-l
Title Page
2-1
2-2
2-3
3-1
4-l
4-2
4-3
5-l
5-2
5-3
5-4
6-l
6-2
6-3
6-4
6-5
6-6
Model177FrontPanel ..........................................................................
1-O
Model 177 Rear View of Standard Line Voltage Instrument
............................................ 2.2
Model 177 Rear View of Optional Line Voltage Instrument
............................................. 2-2
Operating Controls .............................................................................
2-5
Test Circuitfor20mVDC Accuracy Check
..........................................................
3-2
Model 177 Simplified Signal Flow Block Diagram
.................................................... 4-l
Simplified Signal Conditioning
.................................................................... 4-3
AfDConverterFunction .........................................................................
4~5
Test Point Locations
............................................................................
5-3
Integrator and Comparator Waveforms.
............................................................
5-4
Front Panel Zero Knob Removal
..................................................................
5-5
BatteryPacklnstallation .........................................................................
5-5
Model177CoversandPanels .....................................................................
6-2
Model 177 PC-476, Component Location Drawing, Dwg. No. 294740,
................................. 6-l 1
Display Board PC-475, Component Location Drawing, Dwg. No. 29652C
............................. 6-15
Model 1788 Battery Pack PC-451, Component Location Drawing,
Dwg. No. 29007C ...................... 6-16
Model 1788 Battery Pack, Schematic Diagram, Dwg. No. 29659C
.....................................
6-17
Model 1774% Digit Multimeter, Schematic Diagram, Dwg. No. 29658E
................................ 6-19
LIST OF TABLES
Table
Title
Page
2-1 Model 177 DMM Condensed Operating Instructions
.................................................. 2-4
2-2
Resistance Ranges .............................................................................
2-6
3-1
Recommended Test Equipment for Performance Verification
..........................................
3-l
3-2
DC Voltage Performance
Check (2V to 1200V Ranges). .............................................. 3-2
3-3
ACVoltage Accuracy Check .....................................................................
3-2
3-4
Resistance Accuracy Check ......................................................................
3-3
3-5
DCCurrentAccuracyCheck
.....................................................................
3-3
4-l
Range Switch Correlation ........................................................................
4-2
4-2
AC Converter Attenuation Amplification
........................................................... 4-3
4-3
DC Signal Conditioning Attenuation
and Gain ....................................................... 4-3
4-4
OhmsConversion ..............................................................................
4-4
5-l
Recommended Test Equipment for Calibration
...................................................... 5-l
5-2
Calibration Procedure ........................................................................... 5-2
5-3
Line Power Checks
............................................................................. 5-6
5-4
BatteryPowerChecks
...........................................................................
5-7
5-5
Display
....................................................................................... 5-8
5-6
A/DConverrer .................................................................................
5-8
5-7
ACConverter ..................................................................................
5-9
5-8
DC Attenuator and Chopper Amplifier
............................................................
5-10
5-9
OhmsSourceandResistors ..................................................................... 5-11
5-10
CurrantShunts
..............................................................................
5-11
5-11
Adjustment of Battery Charge Voltage
............................................................
5-12
6-l
Model177SparePartsKit ....................................................................... 6-3
6-2
Mother Board,
Parts List
......................................................................... 6-4
6-3
Modal 1788 Battery
Pack, Parts List ..............................................................
6-8
6-4
Display Board,
Parts List ......................................................................... 6-9
iii