Name: Keithley 617
Brand: Keithley
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Model 617

Programmable Electrometer

Instruction Manual

Contains Operating and Servicing Information

Advanced Test Equipment Rentals

www.atecorp.com 800-404-ATEC (2832)

Table of Contents5
Features16
Introduction16
Manualaddenda16
Safety Symbols and Terms16
SECTION L-GENERAL INFORMATION16
Warranty Information16
Preparation for Use17
Specifications17
Unpacking and Inspection17
Using this Instruction Manual17
Accessories18
- Section 2-Operation20
Repacking for Shipment18
Introduction20
Power up Procedure20
Power up Self Test and Display Messages20
Controls21
- Display and Indicators23
Front Panel Familiarization21
Front Panel Programs23
- IEEE-488 Address23
Calibration24
Exponent Mode (Alpha or Numeric)24
Rear Panel Familiarization24
- Connectors and Terminals24
Basic Measurement Techniques26
- Warm up Period26
Linefuse26
Input Connections27
Making Voltage Measurements27
Guarded Operation29
- Meter Loading Considerations29
- Unguarded Circuit29
- Currentmeasurements31
- Voltage Burden Considerations32
- Coulombs Connections33
- Resistance Measurement Connections35
- Voltage Source Connections36
- V/L Resistance Measurement Connections38
- Typical 2V Analog Output Connections39
- Typical Preamp out Connections40
- Electrometer Input Circuitry (Ampsmode)41
- Shielded Fixture Construction41
- Non-Decade Current Gains44
- External Trigger Pulse Specifications48
- Meter Complete Pulse Specifications49
- Leakage Resistance Effects52
- Input Capacitance Effects53
Busdescription55
Busmanagementlines56
Datalines56
Handshakelines56
Ieee-488Buslines56
Buscommands57
Addressedcommands58
Universalcommands58
Commandcodes59
Commandsequences59
Hardwareconsiderations61
- Typical Controlled Systems61
- Busconnections62
Universalcommandsequence61
Primaryaddressprogramming63
Talk-Onlymode63
Controller Handler Software64
- Interface BASIC Programming Statements64
Ieeecommandgroups66
- General Bus Command Programming66
Interface Function Codes66
Ren(Remoteenable)67
Ifc(Interfaceclear)68
Llo(Locallockout)68
- Gtl(Gotolocai)68
Dcl(Deviceclear)69
SDC (Selective Device Clear)69
Get(Groupexecutetrigger)70
Serial Polling (WE, SPD)70
- Device-Dependent Command Programming71
Execute(X)72
- Function (F)72
Baseline Suppression (N)76
- Reading Mode (B)77
- Data Store Mode77
- Voltage Source Value (V)78
Calibration Value (A)79
Voltage Source Operate79
Data Format (G)80
Non-Volatile Memory Storage (L)80
Trigger Mode (T)81
EOI and Bus Hold-Off Modes (K)84
Status(U)85
Terminator(Y)85
Front Panel Messages88
- Buserror88
Numbererror89
Trigger Overrun Error89
Bus Data Transmission Times90
- Section 4-Applications91
Insulation Resistance Measurements91
- 4-L91
- Low-Level Leakage Current Measurements95
Introduction91
Diodecharacterization97
Capacitorleakagemeasurements98
Voltage Coefficients of High-Megohm Resistors100
Static Charge Detection102
Using the Model 617 with External Voltage Sources102
Initial Conditions104
Introduction104
- Environmental Conditions104
Recommended Test Equipment104
Verification Procedure105
- Input Current Verification105
- Amps Verification105
- Coulombs Verification106
- Volts Verification108
- Ohms Verification109
- Ohms Verification (200M0 and Gfl Ranges)109
- Voltage Source Verification111
- Section 6-Theory of Operation113
Input Preamplifier113
- Input Stage115
- Gain Stage115
- Output Stage115
Introduction113
Overall Functional Description113
Ohms Voltage Source118
- Zero Check119
- Ranging Amplifier119
Multiplexer and Buffer Amplifier120
- Reference Source121
- A/D Converter121
Digital Circuitry123
- Microcomputer123
Memory Elements123
- Device Selection123
- IEEE-486 Bus123
- Input/Output Circuitry124
- Display Circuitry124
Voltage Source125
Power Supplies126
- Section 7-Maintenance127
- Introduction127
Linevoltageselection127
Calibration128
- Recommended Calibration Equipment128
- Environmentalconditions128
- Warmupperiod129
- Calibrationjumper129
- Front Panel Calibration130
- IEEE-488 Bus Calibration130
- Calibration Sequence174
- Inputoffsetadjustment174
- Ampscalibration174
- Coulombs Calibration176
- Voltscalibration176
- Ohmscalibration177
Comfuse128
Fusereplacement128

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Brand	Keithley
Model	617
Category	Measuring Instruments
Language	English