Series 2600 System SourceMeters Reference Manual Calibration 16-5
Return to Section 16 topics 2600S-901-01 Rev. A / May 2006
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
Appendix B for error messages and Appendix D for status byte information.
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 Table 16-2 (Model
2601/2602) or Table 16-3 (Model 2611/2612). 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
Parameter values
The full-scale parameters are actually 90% of full scale as indicated in Table 16-2
and Table 16-3. Note that you cannot send a value of exactly 0 for the two zero
parameters, but must instead send a very small value, for example 1e-10 or -1e-
10.
Sense modes
Table 16-2 and Table 16-3 list sense modes for the calibration steps. Note that all
source and measure ranges are calibrated using the LOCAL sense mode. In
addition, the 100mV or 200mV source and measure ranges are also calibrated
using the REMOTE sense mode, and the 1mA and 1V or 2V source ranges are
also calibrated using the CALA sense mode.
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