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Appendix

B: Calibration Series 2600B System SourceMeter® Instrument

Reference Manual

B-4 2600BS-901-01 Rev. B / May 2013

Verification limits

The verification limits stated in this section have been calculated using only the Series 2600B 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 Series

2600B specifications and corresponding test equipment specifications.

Source limit calculations

As an example of how verification limits are calculated, assume you are testing the Model

2601B/2602B/2604B 6 V DC output range using a 5.4 V output value. Using the Model

2601A/2602A/2604B one-year accuracy specification for 5.4 V DC output of ± (0.02% of output + 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

Similarly, assume you are testing the Model 2611B/2612B/2614B/2634B/2635B/2636B 20V DC

output range using an 18 V output value. Using the Model 2611B/2612B/2614B/2634B/2635B/2636B

one-year accuracy specification for 18 V DC output of ± (0.02% of output + 5 mV offset), the

calculated output limits are:

Output limits = 18 V ± [(18 V × 0.02%) + 5 mV]

Output limits = 18 V ± (0.0036 V + 0.005 V)

Output limits = 18 V ± 0.0086 V

Output limits = 17.9914 V to 18.0086 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 front panel (bench)

defaults as follows:

1. Press the MENU key.

2. Scroll to the SETUP menu item (by turning the navigation wheel ), and then press the ENTER

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