Keithley 6430 User Manual

17-72 SCPI Command Reference
:STARt <n>
:STOP <n>
:SOURce[1]:CURRent:STARt <n> Specify start current level (current sweep)
:SOURce[1]:VOLTage:STARt <n> Specify start voltage level (voltage sweep)
:SOURce[1]:CURRent:STOP <n> Specify stop current level (current sweep)
:SOURce[1]:VOLTage:STOP <n> Specify stop voltage level (voltage sweep)
Parameters <n> = -105e-3 to 105e-3 Set I-Source level (amps)
-210 to 210 Set V-Source level (volts)
DEFault 0A or 0V
MINimum -105e-3A or -210V
MAXimum +105e-3A or +210V
Query :STARt? Query start level for sweep
:STARt? DEFault Query *RST default level
:STARt? MINimum Query lowest allowable level
:STARt? MAXimum Query highest allowable level
:STOP? Query start level for sweep
:STOP? DEFault Query *RST default level
:STOP? MINimum Query lowest allowable level
:STOP? MAXimum Query highest allowable level
Description These commands are used to specify the start and stop levels for a sweep. If
using a fixed (manual) source range, the sweep will be performed using a
source range that will accommodate all source values (Best Fixed Range).
You can use source auto range if sweeping through one or more source
ranges.
When the sweep is started, the source will output the specified start level
and, after the delay period of the SDM cycle, a measurement is performed.
The sweep continues until the source outputs the specified stop level. At this
level, the instrument again performs another measurement (after the SDM
delay) and then stops the sweep.
The source-measure points in a sweep can be set by specifying a step size,
or by specifying the number of source-measure points in the sweep. Refer to
:STEP and :POINts.
:STARt and :STOP are coupled to :CENTer and :SPAN. Thus, when start
and stop values are changed, the values for center and span are affected as
follows:
Center = (Start + Stop) / 2
Span = Stop - Start

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.