Calibration Errors - Keithley 2601 Reference Manual

Series 2600 System SourceMeter® Instruments Reference Manual

Calibration errors

The Series 2600 checks for errors after each calibration step, minimizing the possibility that
improper calibration may occur due to operator error.
You can detect errors while in remote by testing the state of EAV (Error Available) bit (bit 2) in the
status byte. (Use the *STB? query to request the status byte.) Query the instrument for the type of
error by using the errorqueue.next command. The Series 2600 will respond with the nature of
the error. See
Calibration
Use the following procedure to perform remote calibration by sending commands over the IEEE-
488 bus or RS-232 port. The remote commands and appropriate parameters are separately
summarized for each step.
Calibration steps
Step sequence
Calibration steps must be performed in the order shown in
16-3 (Model 2611/2612), or
2-wire (local sensing) except as noted. Calibration of each range is performed as a four-point
calibration:
• + ZERO
• + FULL SCALE
• - ZERO
• - FULL SCALE.
Table 16-2
Model 2601/2602 calibration steps
1
Function
Voltage Source
and Measure
Current Source
and Measure
1. Calibrate only the source for the SENSE_CALA sense steps.
2. Steps must be performed in the order shown.
3. 10A range for changing calibration of range only and is not available for normal use.
4. Do not use actual 0 values for zero calibration points. Send very small values such as ±1e-10.
Calibration polarities must also be set as shown in the procedures.
5. Output must be off before changing to the CALA sense mode.
2600S-901-01 Rev. C / January 2008
Appendix B for error messages and
Table 16-5
2
Calibration steps
100mV
100mV
1V
1V
6V
40V
100nA
1μA
10μA
100μA
1mA
1mA
10mA
100mA
1A
3A
3
10A
Return to Section Topics
Appendix D
Table 16-2
(Model 2635/2636). Note that all steps are performed using
4
Calibration points
±1e-12, ±90mV
±1e-10, ±90mV
±1e-10, ±0.9V
±1e-10, ±0.9V
±1e-10, ±5.4V
±1e-10, ±36V
±1e-10, ±90nA
±1e-10, ±0.9μA
±1e-10, ±9μA
±1e-10, ±90μA
±1e-10, ±0.9mA
±1e-10, ±0.9mA
±1e-10, ±9mA
±1e-10, ±90mA
±1e-10, ±0.9A
±1e-10, ±2.4A
±1e-10, ±2.4A
Section 16: Calibration
for status byte information.
(Model 2601/2602), or
5
Sense mode
smuX.SENSE_LOCAL
smuX.SENSE_REMOTE
smuX.SENSE_LOCAL
smuX.SENSE_CALA
smuX.SENSE_LOCAL
smuX.SENSE_LOCAL
smuX.SENSE_LOCAL
smuX.SENSE_LOCAL
smuX.SENSE_LOCAL
smuX.SENSE_LOCAL
smuX.SENSE_LOCAL
smuX.SENSE_CALA
smuX.SENSE_LOCAL
smuX.SENSE_LOCAL
smuX.SENSE_LOCAL
smuX.SENSE_LOCAL
smuX.SENSE_LOCAL
Table
16-5