Table Of Contents - Keithley 261 Instruction Manual

Paragraph
TABLE OF CONTENTS
Title
Page
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.6
1.9
2.1
2.2
2.3
2.4
2.5
2.6
2.6.1
2.6.2
2.7
2.6
2.6.1
2.6.2
2.9
2.9.1
2.9.2
2.10
2.10.1
2.10.2
2.11
2.12
2.13
3.1
3.2
3.3
3.4
4.1
4.2
4.3
4.4
4.5
4.5.1
4.5.2
4.5.3
4.6
5.1
5.2
5.3
5.3.1
5.3.2
5.3.3
6.1
6.2
6.3
6.4
SECTION 1 GENERAL INFORMATION
Introduction
..............................................
..............................
Model261Features.. .....................................................................
WarrantyInformation .......................................................................
ManualAddenda.. .........................................................................
SafetyTerms ..............................................................................
Unpackingar~dlnspection ...................................................................
Using the Model 261 Instruction Manual.
.......................................................
...
Speclflcatlon:r.
......................................................................... ....
Optional Accessories
..................................................................... ..
SECTION 2 ~OPERATION
Introduction .................... ........................................ ..... ........
Front Panel Controls and Terminals
................................................. ...... ..
Rear Panel Controls and Terminals ............................................................
PreparationForUse .........................................................................
BasicOperatingProcedure ...................................................................
AccuracyCollsidarations ....................................................................
Input Voltage Drop (Voltage Burden1
........................................................
Proper Multiplier Settings ..................................................................
DutputConnactions
.......................
................................................
Input Voltage Drop for Fsedback and Shunt-Type Picoammeters ..................................
Feedback-'TypePicoammeter ...............................................................
Shunt-TypNs Picoammeter
....................... ........................................
Compensation for Input Voltage Drop of Feedback~Type Picoammetsr .............................
Calculating Voltage Drop Error.,
................................................ ...... ..
CompensatingEquation
................................ ........................... ....
Compensation Drop for Input Voltage Drop of Shunt~Type High-Impedance
Picoammetsrs
............
CalculatingtheError ........................................................................
CompenstitingEquations ..................................................................
Compensation for Input Voltage Drop of Shunt-Type Low Impedance Picoammeters
.................
Range Resistor Voltage Coefficient
.................................................. .........
Compensation for Temperature Coefficient
.....................................................
SECTION 3 APPLICATIONS
Introduction
...............................................................................
CurrentSuppression..
....................
.................................................
GaivanometricMeasurements ................................................................
0hmmeterC;llibration .......................................................................
SECTION 4 PERFORMANCE VERIFICATION AND CALIBRATION
Introduction ...............................................................................
EnvironmsntelConditions ....................................................................
RecommendedTestEquipment............................................................~ ..
InitialConditions ...........................................................................
VerificationProcedure .......................................................................
TopCoverRemoval .......................................................................
Range Resistor Verification
................................................................
Multiplier Switch Setting Verification ........................................................
Calibration .................................................................................
SECTION 6 THEORY OF OPERATION
Introduction
..................................................... .........................
Block Diagram
.......................................... ..................................
CircuitDescription ..........................................................................
VoltageSupply ...........................................................................
RangeResistors ..........................................................................
Kelvin-Varley Voltage Divider,
..............................................................
SECTION 6 MAINTENANCE
Introduction ...............................................................................
ServicingSchedule .........................................................................
TopCaverRt!moval .........................................................................
PalfSReplact!me"t ..........................................................................
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1~1
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1~2
2-l
2-1
2-1
2~1
2-1
2-3
2-3
2-3
2-3
2-4
2-4
2-4
2-5
2-5
2-5
2-5
2-5
2-6
2-6
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2-6
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4-1
4-1
4-1
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4-1
4-2
4-2
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5-1
5-1
5-l
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5-2
6-l
6-1
6-l
6-1