22-4 Return to Section Topics 2600AS-901-01 Rev. B / September 2008
Section 22: Performance Verification Series 2600A System SourceMeter® Instruments Reference Manual
particular measurement falls outside the allowable range, recalculate new limits based both on the
Series 2600A specifications and corresponding test equipment specifications.
Example limits calculations
Model 2601A/2602A example
As an example of how verification limits are calculated, assume you are testing the Model 2601A/
2602A 6V DC output range using a 5.4V output value. Using the Model 2601A/2602A one-year
accuracy specification for 5.4V DC output of ± (0.02% of output + 1.8mV offset), the calculated
output limits are:
Output limits = 5.4V ± [(5.4V × 0.02%) + 1.8mV]
Output limits = 5.4V ± (0.00108 + 0.0018)
Output limits = 5.4V ± 0.00288V
Output limits = 5.39712V to 5.40288V
Model 2611A/2612A/2635A/2636A example
Similarly, assume you are testing the Model 2611A/2612A/2635A/2636A 20V DC output range
using an 18V output value. Using the Model 2611A/2612A/2635A/2636A one-year accuracy
specification for 18V DC output of ± (0.02% of output + 5mV offset), the calculated output limits
are:
Output limits = 18V ± [(18V × 0.02%) + 5mV]
Output limits = 18V ± (0.0036 + 0.005)
Output limits = 18V ± 0.0086V
Output limits = 17.9914V to 18.0086V
Restoring factory defaults
Before performing the verification procedures, restore the instrument to its factory front panel
(bench) defaults as follows:
1. Press MENU > SETUP then press the ENTER key.
2. Select RECALL then press the ENTER key.
3. Select INTERNAL then press the ENTER key.
4. Select FACTORY then press the ENTER key to restore defaults.
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