Keithley 199 User Manual

IEEE-488 PROGRAMMING
Examples:
For a delay of 0.0029x send WZX.
For a delay of 30.05s~ send W3005OX.
For a delay of 60s~ send W6OCCOX.
Upon power up or after receiving a DCL or SDC &ni-
mand, the instrument will rehxn to the default condition.
Programming Example-To program a 250msec delay
period into the instrument, enter the following statements
into the computer:
The instrument will wait for 250msec after each triggered
conversion before executing the next conversion period.
3.9.19 Self-Test (J)
The J command causes the instrument to perform tests it
automatically performs upon power up. When the self-test
command is given, the Model 199 performs the following
tests:
1. ROM Test
2. RAM Test
3. EY’ROM Test
J command parameters include:
JO = Perform self-test.
Jf the self-test is successful, the J byte in the UO status word
will be set to 1. If E’PROM fails, the message “UNCAII’
will be displayed and the J byte in the Ul status word will
be set to 2. An EY’ROM failure is also flagged in the Ul
status word. If ROM and RAM fails, the instrument will
lock up.
See paragraph 67.2 for more information on these tests
and recommendations to resolve a failure.
Prog~ng Example-Enter the following statements in-
to the computer to perform the Model 199 self-test:
When the END LINE key is pressed the second time, the
instrument performs the self-test. If successful, the self-
test byte (J) in the UO status word will be set to 1.
3.9.20 Hit Button (H)
The hit button command allows the user to emulate vir-
tually any front panel control sequence. The H command
is sent by sending the ASCII letter followed by a number
representing a front panel control. These control numbers
are shown below.
Command
HO
Hl
E
H4
H5
ii;
E
HlO
Button
VOLTS
OHMS
AMPS
ZEO
AUTO
7
SCA&ER
TRIGGER
SHIET
Examples:
HOX-Selects the VOLTS function.
H2X-Selects the AMPS function.
F’qmmmirtg Example-Enter the following statements in-
to the computer to place the instrument in the ohms
function:
The instrument is placed in the ohms function.
3-29

Keithley 199 Specifications

General

Brand	Keithley
Model	199
Category	Scanner
Language	English

Summary

Safety Precautions

General Instrument Information

IEEE-488 Bus Implementation

Explains commands and functions available over the IEEE-488 bus.

Front Panel Operation

Trigger Setup Options

Details triggering setup options like mode, delay, and interval.

DMM Setup Programs

Describes setup options like revision level, multiplexer, and IEEE-488 address.

Error Messages and Conversion Times

Scanner Operation

Scanner Setup and Notes

Details scanner setup options (mode, pole, ratio) and provides important operational notes.

IEEE-488 Programming

Device-Dependent Commands

Lists and describes commands specific to controlling the instrument's functions.

Calibration Commands

Details commands used for calibrating the instrument.

Basic DMM Operation

Introduction and Power Up

Basic DMM Operation and Front Panel

Basic DMM Operation and Front Panel Familiarization

Basic DMM Operation and Controls

Power Switch and Controls Overview

Basic DMM Operation and Panel Familiarization

Calibration Lock and Input Switch

Basic DMM Operation and Rear Panel

Scanner Card Slot and Display Messages

Basic DMM Operation and Measurements

Basic Measurements and Warm-Up

Covers basic measurement procedures and explains the warm-up period.

Zero Feature Operation

Details the zero feature for baseline suppression and its operation.

Basic DMM Operation and Zero Correction

Zero Correction Procedures

Provides steps for correcting zero values, especially for specific ranges.

Establishing Baseline Levels

Explains how to establish baseline levels for measurements and associated warnings.

Basic DMM Operation: Filter and Resolution

Filter Operation and Resolution Modes

Discusses the internal filter, front panel filter, and digit resolution modes.

Basic DMM Operation: Voltage and Low-Level Measurements

DC Voltage Measurement Procedures

Details procedures for making DC voltage measurements and associated cautions.

Basic DMM Operation: Resistance Measurements

Resistance Measurement Procedures

Explains how to make resistance measurements using 2- or 4-terminal methods.

Basic DMM Operation: AC Voltage and Current

TRMS AC Voltage Measurement

Details procedures for making TRMS AC voltage measurements.

DC and TRMS AC Current Measurements

Explains how to make DC and TRMS AC current measurements.

Basic DMM Operation: dB Measurements

dB Measurement Procedures

Covers how to perform dB measurements and establish reference levels.

Basic DMM Operation: TRMS and dB Considerations

TRMS Measurement Considerations

Discusses factors affecting TRMS measurements, including waveform types and AC offset.

Basic DMM Operation: Setup Programs

DMM Setup Program Overview

Details the eight available DMM setup programs for configuration.

Basic DMM Operation: Setup Program Details

IEEE-488 Primary Address Programming

Details how to check or modify the IEEE-488 primary address.

Basic DMM Operation: Line Frequency and Save Setup

Save Setup Program

Describes how to save current instrument conditions as default settings.

Basic DMM Operation: LED Test, Debug, Reset, and Triggering

LED Test, Debug, and Reset Procedures

Explains procedures for LED test, debug program, and instrument reset.

Front Panel Triggering and Mode Selection

Discusses triggering, mode selection, delay, and interval programming.

Basic DMM Operation: Trigger Sources, Delay, and Interval

Trigger Sources and Delay Programming

Basic DMM Operation: Trigger Examples and External Triggering

External Triggering

Discusses using external devices to trigger the instrument and its input specifications.

Basic DMM Operation: Meter Complete and Data Store

Storing Data at Programmed Intervals

Details the procedure for storing data at specified time intervals.

Basic DMM Operation: Data Store and Recalling Data

Triggering One-shot Readings into Data Store

Explains how to store readings using one-shot triggering.

Recalling Stored Data

Describes the procedure for recalling stored data from the instrument.

Scanner Operation and Connections

Scanner Operation Overview

Introduces scanner operation with the optional Model 1992 Scanner.

Scanner Connections

Illustrates how to connect the Model 1992 Scanner Card.

Scanner Operation: Pole and Output Connections

Scanner Operation: Display, Pole, Ratio, and Interval

Pole Mode and Ratio Mode Programming

Details how to program pole mode and enable/disable ratio operation.

Reading Interval Programming

Explains how to program the reading interval for scanner modes.

Scanner Operation: Scan Limit and Manual Channel

Scan Limit Programming

Details how to program the channel limit for scan sequences.

Scanner Operation: Step Mode

Step Mode Operation Overview

Details how to set up and use the scanner in step mode.

Scanner Operation: Scan Mode and Data Store

Scan Mode Operation

Details procedures for using the scanner in scan mode.

Scan Mode Operation with Intervals and Triggers

Scanner Programming Basics

Provides basic steps for programming the scanner for different modes.

Recalling Scanned Data

Describes the procedure for recalling stored data from the instrument.

Scanner Operation: Data Store and Recalling

Scanner Operation: Low-Level Measurements and Instrumentation

Low-Level Measurement Considerations

Discusses minimizing errors in low-level measurements (thermoelectric potentials, shielding).

Scanner Operation: Delay, Filtering, and Interval Times

Scanner Delay Programming

Scanner Operation: Manual Channel and Step Mode

Step Mode Operation

One-Shot Triggering for Step Mode

Explains how to use one-shot triggering for scanning channels in step mode.

IEEE-488 Programming Overview

Controller Connection and Primary Address

IEEE-488 Programming: Operating Modes and Readings

Programming Operating Modes

Requesting and Receiving Readings

IEEE-488 Programming: Error Conditions

No Remote Error

IDDC and IDDCO Errors

IEEE-488 Programming: Error Messages and Indicators

Trigger Overrun, Big String, Cal Locked, Interval Overrun Errors

General Bus Command Programming

General Bus Commands Overview

REN (Remote Enable) Command

General Bus Commands: LLO, GTL, DCL

DCL (Device Clear) Command

IEEE-488 Programming: Serial Polling and Device-Dependent Commands

Device-Dependent Command Programming

Lists and details programming commands for instrument control.

Device-Dependent Command Summary

Device-Dependent Command Summary (Continued)

Device-Dependent Commands: Execute, Function, Range

Execute (X) Command

Function (F) Command

Details commands for selecting the measurement function.

Range (R) Command

Explains commands for controlling the instrument's sensitivity.

Device-Dependent Commands: Zero and Filter

Zero (Z) Commands

Details commands for controlling the zero function for baseline suppression.

Filter (P) Commands

Explains commands for controlling the signal filtering amount.

Device-Dependent Commands: Rate and Trigger Mode

Rate (S) Command

Covers commands for controlling integration period and resolution.

Trigger Mode (T) Command

Details commands for selecting trigger modes like continuous or one-shot.

Device-Dependent Commands: Reading Mode, Data Store Interval and Size

Data Store Interval (Q) and Size (I) Commands

Covers commands for controlling the interval and size of the data store.

Device-Dependent Commands: Value, Calibration, and Default Conditions

Value (V) and Calibration (C) Commands

Details commands for setting calibration values and programming zero values.

Device-Dependent Commands: Default Conditions and Data Format

Default Conditions (L) Commands

Explains commands to restore factory defaults or save current settings.

Device-Dependent Commands: SRQ Mask and Serial Poll

SRQ Mask (M) and Serial Poll Byte Format

Explains commands to control SRQ generation and the serial poll byte format.

SRQ Mask and Serial Poll Byte Format Details

Device-Dependent Commands: U1 Error Status Word

Device-Dependent Commands: U2-U5 Status and Multiplex

Trigger Delay (W) Command

Translator Software: FORGET Command and Bus Times

Scanner Programming Overview

Scanner Programming: Setup and Manual Control

Scanner Setup Commands

Manual Channel Control

Explains commands to close individual scanner channels.

Step Mode Operation Setup

Scan Mode Operation Setup

Scanner Operation: Pole/Ratio Mode and Interval/Delay

Pole/Ratio Mode Control

Reading Interval and Delay Programming

Scanner Operation: Data Store and Reading Scanned Data

Using Data Store with Scanner

Explains how to use the data store feature to store scanner data for recall.

Reading Scanned Data

Details how to read back scanned data from the instrument.

Performance Verification

Verification Procedures Overview

Provides procedures for verifying the instrument's accuracy specifications.

Performance Verification: DC Volts and AC Volts

DC Volts Verification Procedure

Details the procedure to verify DC Volts function accuracy.

TRMS AC Volts Verification Procedure

Details the procedure to verify TRMS AC Volts function accuracy.

Performance Verification: Ohms Measurements

Ohms Verification Procedure

Details the procedure to verify Ohms function accuracy.

Performance Verification: Current Measurements

DC Current Verification Procedure

Details the procedure to verify DC Current function accuracy.

Performance Verification: AC Current Measurements

TRMS AC Current Verification Procedure

Details the procedure to verify TRMS AC Current function accuracy.

Principles of Operation: Control, Digital, and Scanner Circuits

Scanner Unit Overview

Maintenance: Introduction, Voltage, and Fuses

Fuse Replacement Procedures

Maintenance: Fuse Replacement and Calibration

Current Fuse Replacement

Calibration Overview and Equipment

Maintenance: Calibration Conditions and Controls

CAL LOCK Switch and Front Panel Calibration

Explains CAL LOCK switch and front panel calibration procedure.

Maintenance: Calibration Procedures

Calibration Sequence and IEEE-488 Bus Calibration

Outlines calibration sequence and procedure for IEEE-488 bus calibration.

Resistance Calibration Procedure

Outlines the procedure to calibrate the ohms function.

Maintenance: Resistance and AC Volts Calibration

Maintenance: Resistance and AC Volts Calibration Details

Resistance Calibration Steps

Details steps for resistance calibration using front panel or bus.

Maintenance: AC Volts Calibration Details

Maintenance: AC Volts Calibration High Frequency Check

TRMS AC Volts Calibration Procedure

Details the procedure to calibrate the TRMS AC Volts function.

High Frequency Check for ACV Calibration

Describes the procedure to check high frequency response for ACV calibration.

Maintenance: AC Volts Calibration Adjustments

Maintenance: AC Volts Calibration Flowchart

Maintenance: AC Volts High Frequency Adjustments

Maintenance: DC and AC Current Calibration

DC Current Calibration Procedure

Details the procedure to calibrate the DC Current function.

Maintenance: AC Current Calibration and Disassembly

TRMS AC Current Calibration Procedure

Details the procedure to calibrate the AC AMPS function.

Disassembly Instructions

Provides instructions for disassembling the unit for component access.

Maintenance: Disassembly Procedures

Case Cover Removal

Scanner Board Removal

Digital Board Removal

Front Panel and Display Board Removal

Analog Board Removal

Maintenance: Static Handling and Troubleshooting

Handling Static Sensitive Devices

Troubleshooting Overview

Guides users on how to troubleshoot instrument problems.

Power Up Self Test

Describes the power-up self-test sequence and potential failures.

Maintenance: Diagnostics, Power Supplies, and Checks

Diagnostics Programs

Explains diagnostic programs for testing LEDs, relays, and FETs.

Troubleshooting Mode Table

Maintenance: Display and Scanner Checks

Scanner Installation

Scanner Installation and Card Checkout

Scanner Card Checkout Procedure

Details the procedure to test the functionality of the installed Model 1992 Scanner.