Verification Limits; Example Limits Calculation; Performing The Verification Test Procedures; Test Summary - Keithley 2302 Instruction Manual

Verification limits

The verification limits stated in this section have been calculated using only the Model 2306
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 Model 2306
specifications and corresponding test equipment specifications.

Example limits calculation

As an example of how verification limits are calculated, assume you are testing the unit using
a 10V output value. Using the Model 2306 voltage output accuracy specification of ±(0.05% of
output + 3mV offset), the calculated output limits are:
Output limits = 10V ± [(10V X 0.05%) + 3mV]
Output limits = 10V ± (0.005 + 0.003)
Output limits = 10V ± 0.008V
Output limits = 9.992V to 10.008V

Performing the verification test procedures

Test summary

• DC voltage output accuracy
• DC voltage readback accuracy
• DC current output accuracy
• DC current readback accuracy
• Digital voltmeter input accuracy
If the Model 2306 is not within specifications and out of warranty, see the calibration
procedures in Section 14 for information on calibrating the unit.

Test considerations

When performing the verification procedures:
• Make sure that the test equipment is properly warmed up and connected to the correct
• Before setting output values, select Channel #1 (battery channel) or Channel #2 (charger
• Be sure the test equipment is set up for the proper function and range.
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Model 2306 OUTPUT #1 or OUTPUT #2 terminals on the rear panel, as appropriate for
the channel you are testing.
channel) as required. Press the
#1 terminals) and Channel #2 (OUTPUT #2 terminals).
Performance Verification
and keys to toggle between Channel #1 (OUTPUT
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