Keithley 6430 User Manual

17-44 SCPI Command Reference
:STATe <b>
:DISPlay[:WINDow[1]]:TEXT:STATe <b> Control message; top display
:DISPlay:WINDow2:TEXT:STATe <b> Control message; bottom display
Parameters <b> = 0 or OFF Disable text message for specified display
1 or ON Enable text message for specified display
Query :STATe? Query state of message mode for specified
display
Description These commands enable and disable the text message modes. When
enabled, a defined message is displayed. When disabled, the message is
removed from the display.
GPIB Operation — A user defined text message remains displayed only as
long as the instrument is in remote. Taking the instrument out of remote (by
pressing the LOCAL key or sending LOCAL 27) cancels the message and
disables the text message mode.
RS-232 Operation — A user defined test message can be cancelled by
sending the :SYSTem:LOCal command or pressing the LOCAL key.
FORMat subsystem
The commands for this subsystem are used to select the data format for transferring instru-
ment readings over the bus. These commands are summarized in Table 17-3.
Data format
[:DATA] <type>[,length]
:FORMat[:DATA] <type>[,<length>] Select data format
Parameters <type>[,<length>] = ASCii ASCII format
REAL,32 IEEE754 single precision format
SREal IEEE754 single precision format
NOTE <length> is not used for the ASCii or SREal parameters. It is optional for the REAL
parameter. If you do not use <length> with the REAL parameter, the <length>
defaults to 32 (single precision format).
Query [:DATA]? Query data format
Description This command is used to select the data format for transferring readings
over the bus. Only the ASCII format is allowed over the RS-232 interface.
This command only affects the output of READ?, FETCh?, MEASure?,
TRACe:DATA?, CALC1:DATA? and CALC2:DATA? over the GPIB. All
other queries are returned in the ASCII format.

Keithley 6430 Specifications

General

Type	Sub-Femtoamp Remote SourceMeter
Compliance Voltage	200 V
Maximum Output Voltage	200 V
Maximum Output Current	100 mA
Compliance Limit	Programmable
Interface	GPIB, RS-232
Input Impedance	>10^14 Ω

Summary

Safety Precautions

3 Basic Source-Measure Operation

Basic Source-Measure Procedure

Details setup for source-measure operations: function, values, limits, and output control.

5 Source-Measure Concepts

Compliance limit

Discusses compliance limits, values, and determination.

Operating boundaries

Covers voltage/current boundaries for source, sink, I-source, V-source, and source-measure modes.

6 Range, Digits, Speed, and Filters

Range and digits

Discusses available ranges, limits, manual/autoranging, and display resolution.

Speed

Filters

Provides information on 3-stage filtering to reduce reading noise.

7 Relative and Math

Math Operations

Details math (FCTN) operations: power, offset ohms, varistor, etc.

9 Sweep Operation

Configuring and Running a Sweep

Discusses setup, configuration, delay setting, and performing sweeps.

10 Triggering

Trigger Model

Discusses trigger model, layers, event detection, delay, and device action.

Configuring Triggering

Details how to configure various triggering aspects.

Remote Triggering

Details remote trigger model, commands, and basic triggering example.

11 Limit Testing

Types of Limits

Discusses three limit types: compliance, coarse, fine; summarizes grading and sorting modes.

Configuring and Performing Limit Tests

Describes configuration for limit tests and typical test procedure.

Remote Limit Testing

12 Digital I/O Port, Interlock, and Output Configuration

Digital I/O Port

Safety Interlock

Describes using Digital I/O Port as a safety interlock.

Front Panel Output Configuration

14 Status Structure

Programming and Reading Registers

Status Byte and Service Request (SRQ)

Explains programming Status Byte for SRQs and using serial poll to detect SRQs.

15 Common Commands

Command Summary

Lists IEEE-488.2 common commands used by the SourceMeter.

Command Reference

Provides detailed reference for common commands, excluding status structure.

16 SCPI Signal-Oriented Measurement Commands

Command Summary

Configuring Measurement Function

Provides detailed info on commands to configure measurement function.

Acquiring Readings

Describes commands to acquire post-processed readings, trigger, acquire, and single measurement.

17 SCPI Command Reference

18 Performance Verification

Verification Test Requirements

Recommended Test Equipment

Performing the Verification Test Procedures

Details restoring factory defaults, setting ranges, and output values.

Mainframe Verification

Covers procedures to verify mainframe accuracy alone.

19 Calibration

Recommended Calibration Equipment

Unlocking Calibration

Mainframe Calibration

Includes procedures to calibrate the mainframe without the Remote PreAmp.

20 Routine Maintenance

Line Fuse Replacement

Covers procedure and part numbers for replacing the line fuse.

Front Panel Tests

F Measurement Considerations

Floating measurement safety concerns

Discusses safety concerns for measurements up to 42V above chassis ground.

Low current measurements

Leakage currents and guarding

Explains reducing leakage currents using insulators, humidity control, and guarding.