2308-900-01 Rev. A / July 2008
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Section Topics
12-5
Model 2308 Portable Device Battery/Charger Simulator User’s Manual
Section 12: Performance Verification
• DC voltage readback accuracy
• DC current output accuracy
• DC current readback accuracy
• Digital voltmeter input accuracy
If the Model 2308 is not within specifications and out of warranty, see the calibration procedures in
Section 13
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
OUTPUT #1 or OUTPUT #2 terminals on the rear panel, as appropriate for the channel you
are testing.
• Before setting output values, select battery channel (#1) or charger channel (#2) as
required. Press the or keys to toggle between battery channel (#1) (OUTPUT #1
terminals) and charger channel (#2) (OUTPUT #2 terminals).
• Be sure the test equipment is set up for the proper function and range.
• Do not connect test equipment to the Model 2308 through a scanner, multiplexer, or
other switching equipment.
• Be sure that the Model 2308 output is turned on before making measurements.
• Allow the unit output signal to settle before making a measurement.
Output voltage accuracy
Follow the steps below to verify that the output voltage accuracy is within specified limits. This test
involves setting the output voltage to specific values and measuring the voltages with a precision
digital multimeter.
1. With the power supply’s output off, connect the digital multimeter to the OUTPUT #1
SOURCE and SENSE terminals, as shown in
Figure 12-1
. Be sure to observe proper
polarity ( and SENSE + to INPUT HI; SOURCE - and SENSE - to INPUT LO).
NOTE
When verifying the battery channel (#1), make sure you connect the
and source - to the same pair of pins (either both in or both out) on the
connector. Do not mix them because the internal resistance present on the
inner pins will cause incorrect verification data to be returned.
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