Appendix B: Calibration
2606B System SourceMeter® Instrument Reference Manual
B-4
2606B-901-01 Rev. B / May 2018
Verification limits
The verification limits stated in this section have been calculated using only the 2606B one-year
accuracy specifications, and they do not include test equipment uncertainty. If a particular
measurement falls outside the allowable range, recalculate new limits based both on the 2606B
specifications and corresponding test equipment specifications.
Source limit calculations
As an example of how verification limits are calculated, assume you are testing the 6 VDC output
range using a 5.4 V output value. Using the one-year accuracy specification for 5.4 VDC output of ±
(0.02% of 1.8 mV offset), the calculated output limits are:
Output limits = 5.4 V ± [(5.4 V
×
0.02%) + 1.8 mV]
Output limits = 5.4 V ± (0.00108 V + 0.0018 V)
Output limits = 5.4 V ± 0.00288 V
Output limits = 5.39712 V to 5.40288 V
Measurement limit calculations
Measurement limits are calculated in the same way as the source limits, except that the limits are
calculated with respect to the measurement of the external reference instrument.
Restoring factory defaults
Before performing the verification procedures, restore the instrument to its factory defaults as follows:
1. Press the
MENU
key.
2. Scroll to the
SETUP
menu item, and then press the
ENTER
key.
3. Scroll to the
RECALL
menu item, and then press the
ENTER
key.
4. Scroll to the
INTERNAL
menu item, and then press the
ENTER
key.
5. Scroll to the
FACTORY
menu item.
6. Press the
ENTER
key to restore defaults.
Performing the verification test procedures
Perform the following verification tests to make sure the instrument is operating within specifications:
•
(on page B-6)
•
(on page B-7)
•
(on page B-9)
•
(on page B-10)
If the 2606B is not within specifications and not under warranty, see the procedures in
page B-10) for information on adjusting the instrument.
