2600AS-901-01 Rev. B / September 2008 Return to Section Topics 20-5
Series 2600A System SourceMeter® Instruments Reference Manual Section 20: Calibration
Calibration errors
The Series 2600A 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 2600A will respond with the nature
of the error. See
Appendix A for error messages and Appendix C for status byte information.
Calibration
Use the following procedure to perform remote calibration by sending commands over the IEEE-
488 bus, RS-232 port, or LAN. 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 Table 20-2 (Model 2601A/2602A), or
Table 20-3 (Model 2611A/2612A), or Table 20-5 (Model 2635A/2636A). Note that all steps are
performed using 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 20-2
Model 2601A/2602A calibration steps
Function
1
Calibration steps
2
Calibration points
4
Sense mode
5
Voltage Source
and Measure
100mV
100mV
1V
1V
6V
40V
±1e-12, ±90mV
±1e-10, ±90mV
±1e-10, ±0.9V
±1e-10, ±0.9V
±1e-10, ±5.4V
±1e-10, ±36V
smuX.SENSE_LOCAL
smuX.SENSE_REMOTE
smuX.SENSE_LOCAL
smuX.SENSE_CALA
smuX.SENSE_LOCAL
smuX.SENSE_LOCAL
Current Source
and Measure
100nA
1μA
10μA
100μA
1mA
1mA
10mA
100mA
1A
3A
10A
3
±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
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
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.
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