Keithley 6430 User Manual

14-12 Status Structure
• Bit B4, Execution Error (EXE) — Set bit indicates that the SourceMeter detected an
error while trying to execute a command.
• Bit B5, Command Error (CME) — Set bit indicates that a command error has
occurred.
Command errors include:
- IEEE-488.2 syntax error — SourceMeter received a message that does not follow
the defined syntax of the IEEE-488.2 standard.
- Semantic error — SourceMeter received a command that was misspelled or
received an optional IEEE-488.2 command that is not implemented.
- The instrument received a Group Execute Trigger (GET) inside a program
message.
• Bit B6, User Request (URQ) — Set bit indicates that the LOCAL key on the
SourceMeter front panel was pressed.
• Bit B7, Power ON (PON) — Set bit indicates that the SourceMeter has been turned off
and turned back on since the last time this register has been read.
Operation Event Register
The used bits of the Operation Event Register (shown in Figure 14-5) are described as
follows:
• Bit B0, Calibrating (Cal) — Set bit indicates that the SourceMeter is calibrating.
• Bits B1 and B2 — Not used.
• Bit B3, Sweeping (Swp) — Set bit indicates the instrument is performing a sweep
operation.
• Bit B4 — Not used.
• Bit B5, Waiting for Trigger Event (Trig) — Set bit indicates that the SourceMeter is
in the trigger layer waiting for a TLINK trigger event to occur.
• Bit B6, Waiting for Arm Event (Arm) — Set bit indicates that the SourceMeter is in
the arm layer waiting for an arm event to occur.
• Bits B7 through B9 — Not used.
• Bit B10, Idle State (Idle) — Set bit indicates the SourceMeter is in the idle state.
• Bits B11 through B15 — Not used.

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.