Keithley 6430 User Manual

Status Structure 14-11
Status register sets
As shown in Figure 14-1, there are four status register sets in the status structure of the
SourceMeter: Standard Event Status, Operation Event Status, Measurement Event Status, and
Questionable Event Status.
NOTE See Appendix B for details on which register bits are set by specific error and status
conditions.
Register bit descriptions
Standard Event Register
The used bits of the Standard Event Register (shown in Figure 14-4) are described as
follows:
• Bit B0, Operation Complete — Set bit indicates that all pending selected device oper-
ations are completed and the SourceMeter is ready to accept new commands. This bit
only sets in response to the *OPC? query command. See Section 15 for details on
*OPC and *OPC?.
• Bit B1 — Not used.
• Bit B2, Query Error (QYE) — Set bit indicates that you attempted to read data from
an empty Output Queue.
• Bit B3, Device-Dependent Error (DDE) — Set bit indicates that an instrument opera-
tion did not execute properly due to some internal condition.
DDE
(B3)
QYE
(B2)
—
(B1)
OPC
(B0)
EXE
(B4)
CME
(B5)
URQ
(B6)
PON
(B7)
—
(B15 - B8)
Standard Event Status
Enable Register
&
&
&
&
&
&
OR
To Event
Summary Bit
(ESB) of Status
Byte Register
(Figure 14-3)
PON = Power On
URQ = User Request
CME = Command Error
EXE = Execution Error
*ESE
*ESE?
&
DDE
(B3)
QYE
(B2)
—
(B1)
OPC
(B0)
EXE
(B4)
CME
(B5)
URQ
(B6)
PON
(B7)
—
(B15 - B8)
Standard Event
Status Register
*ESR?
DDE = Device-Dependent Error
QYE = Query Error
OPC = Operation Complete
& = Logical AND
OR = Logical OR
Fi
gure
14
-
4
Standard event
status

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.