Name: Keithley 199
Brand: Keithley
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APPENDIX A

ASCII CHARACTER CODES AND IEEE-488 MULTILINE INTERFACE COMMAND MESSAGES

Decimal Hexadecimal ASCII

IEEE-488 Messages*

4 04

7 07

8 08

:: i:

l.3

14 OE

15 OF

16 10

l7 11

19 :

20 14

23 17

24 18

25 19

26 lA

27 1B

28 1c

29 1D

30 lE

EZ ~.~

l Message sent or received with ATN true.

NUL

SOH

!?rx

ACK

BEL

IFi

DLE

DC1

DC2

DC3

DC4

NAK

SYN

CAN

xh4

SUB

GTL

SDC

PPC

GET

Tcr

LLO

DCL

PPU

SPE

SPD

A-l

Table of Contents11
SECTION L-General Information20
- Features20
Warranty Information20
Manual Addenda Manual Ai20
Specifications21
Inspection21
- Manual21
Getting Started21
Accessories22
SECTION 2-Basic DMM Operation23
Introduction23
- Linepower23
Powerupsequence23
Default Conditions23
Front Panel Familiarizaxton25
Display and Indicators25
Controls26
Model 199 Rear Panel27
CAL LOCK Switch27
Inputswitch27
Connectors and Terminals28
- Line Voltage Aspects28
IEEE-488 Connector28
- Scanner Card Slot. T28
- Display Messages28
- Error Messages28
BASICMEAS-Ijrements29
Warmupperiod29
- Zero29
DC Voltage Measurements32
Low-Level Measurement Considerations32
- Resistance Measurements33
- Two-Terminal Resistance Measurements33
- Four-Terminal Resistance Measurements33
- Resistance Ranges33
- TRMS AC Voltage Measurements34
Dbmeasurements35
Corresponding Voltage Reference Levels for Impedance References36
Trmsconsiderations36
Comparison of Average and TRMS Meter Readings37
- Db Applications38
- DMM Setup PROGRAMS38
- Softwarerevisionlevei39
- Multiplexer, Autozeroical39
- Scanner Connections46
- Voltage Test Connections49
- Amplifier Gain Test Configuration57
- Typical Minimum Usable Scan Intervals60
- Section 3-Ieee-48865
- IEEE-488 Connector66
- Section 3-Ieee-48866
- Model 199 Interface Function Codes67
- BASIC Statements Necessary to Send Bus Commands68
- Factory Default Conditions72
- SDC (Selective Device Clear)73
- GET (Group Execute Trigger)73
- Device-Dependent Command Summary76
- Range(R)77
- Scanner Programming Commands. _77
- Zero(Z)78
- Filter (I')78
- Triggermode80
- Reading Mode (B)80
- Data Store Interval(Q) and Size (I)80
- Value (V) and Calibration (C)81
- Defaultc&Ditions(L)82
- Data Format (G)82
- SRQ Mask (M) and Serial Poll Byte Format83
- SRQ Mask and Serial Poll Byte Format84
- EOI and Bus Hold-Off Modes (K)85
- Terminator (Y)86
- Status(U)86
- Auto/Cal Multiplex (A)89
- Trigger Delay (W)89
- Self-Test(J)90
- Hit Button (H)90
- Display(D)91
- Translatorsoftware91
- Translatoe Format92
- Wild Card ($)93
- Translator Error Messages93
- NEW and OLD94
- Combiningtranslator Words94
- Combining Translator Words with Keithley IEEE-488 Comniarids95
- Executing Translator Words A& Keithley IEEE Commands95
- Save95
- List95
- Forget96
- Bus Data Transmission96
- Times96
- Scanner Programming96
- Scanner Setup (N)99
- Pole/Ratio Mode (0)100
- Reading Interval and Delay Programming100
- Using Data Store with the Scanner101
- Testing Resistors102
- Amplifier Gain Testing105
- SECTION 4-Performance Verification108
- Introduction108
- Initialconditions108
- Recommended Test Equipment108
- Verification Procedures109
- DC Volts Verification109
- TRMS AC Volts Verifications109
- Ohms Verification110
- Connections for TRMS AC Volts Verification110
- Limits for TRMS AC Volts Verification110
- DC Current Verification111
- TRMS AC Current Verification112
- Connections for DC Current Verification112
- Connections for TRMS AC Current Verification112
- Limits for AC Current Verification112
- SECTION 5-Principles of Operation113
- Introduction113
- Analog Circuitry113
- Inputsignalconditioning113
- SECTION 5-Principles of Operation116
- Multiplexer . ~5-6120
- 28V Reference Source120
- Inputbufferamplifier120
- Controlcircuitry122
- Digitalcircuitry122
- Display Circuitry122
- Powersui'I'lies122
- Scanner122
- Switching Relays123
- SECTION 6-Maintenance124
- Introduction124
- Linevoltageselection124
- Linefuse124
- Current Fuse125
- Calibration125
- Recommended Calibration Equipment125
- SECTION 6-Maintenance125
- Environmental Conditions126
- Warm-Upperiod126
- CAL Lock Switch126
- Front Panel Calibration126
- Recommended Calibration Equipment126
- IEEE-488 Bus Calibration127
- Ieee-488127
- Calibration Sequence128
- Dcvoltscalibration128
- DC Volts Calibration129
- Resistance Calibration129
- Trmsacvoltscalibration131
- TRMS AC Volts Calibration131
- TRMS AC Current Calibration135
- DC Current Calibration135
- Disassembly Instructions136
- TRMS AC Current Calibration136
- Special Handling140
- Troubleshooting140
- Recommended Test Equipment140
- Diagnostics141
- Signal Conditioning Checks141
- Scanner Checks141
- Power Supply Checks144
- Digital Circuitry144
- Installation145
- Scannerboard Checks145
- Card Checkout146
- Relay Shield Jumper147
- ~.~~_150
- ~ T153
- ,,,._J153
- Appendix C-Ieee-488183
- IEEE Command Group187

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Keithley 199 Specifications

General

Brand	Keithley
Model	199
Category	Scanner
Language	English

Keithley 199 User Manual

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