Keithley 6430 User Manual

17-94 SCPI Command Reference
Error queue
NOTE See Section 14 for details on the error queue.
[:NEXT]?
:SYSTem:ERRor[:NEXT]? Read oldest error (code and message)
Description As error and status messages occur, they are placed in the Error Queue. The
Error Queue is a first-in, first-out (FIFO) register that can hold up to 10 mes-
sages. After sending this command and addressing the SourceMeter to talk,
the oldest message is sent to the computer and is then removed from the
queue.
NOTE The :STATus:Queue? command performs the same function as
:SYSTem:ERRor[:NEXT]?. See “STATus subsystem.”
:ALL?
:SYSTem:ERRor:ALL? Read all errors (codes and messages)
Description This query command is similar to the [:NEXT]? command except that all
messages in the Error Queue are sent to the computer when the SourceMe-
ter is addressed to talk. All messages are removed from the queue.
:COUNt?
:SYSTem:ERRor:COUNt? Return the number of errors
Description After sending this command and addressing the SourceMeter to talk, a deci-
mal number will be sent to the computer. That is the number of messages in
the Error Queue.
:CODE[:NEXT]?
:SYSTem:ERRor:CODE[:NEXT]? Read oldest error (code only)
Description This command is identical to the [:NEXT]? command, except only the code
is returned. The message itself is not returned. The error is cleared from the
queue.
:CODE:ALL?
SYSTem:ERRor:CODE:ALL? Read all errors (codes only)
Description This query command is identical to the :ALL? command, except only the
codes are returned. The actual messages are not returned. All errors are
cleared from the queue.
:CLEar
:SYSTem:CLEar Clear Error Queue
Description This action command is used to clear the Error Queue of messages.

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.