12-10
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2308-900-01 Rev. A / July 2008
Section 12: Performance Verification
Model 2308 Portable Device Battery/Charger Simulator User’s Manual
6. After changing connections to OUTPUT #2, repeat steps 1 through 5 for Channel #2 (use
the or keys to toggle between Channel #1 and Channel #2).
500 mA range readback accuracy
To verify that current readback accuracy is within specified limits:
1. With the power supply’s output off, connect the digital multimeter and characterized 30
Ω
resistor to the OUTPUT #1 terminals, as shown in
Figure 12-3
. Be sure to observe proper
polarity and connections (30
Ω
resistor between and DMM INPUT HI; SOURCE
- to DMM INPUT LO).
Table 12-5
5 A range current readback accuracy limits
*
Nominal output
Voltage
Model 2308
output current
**
Current readback limits
(2 Years, 18°C-28°C)
1 V
1.000 A
0.9978 to 1.0022 A
2 V
2.000 A
1.9958 to 2.0042 A
3 V
3.000 A
2.9938 to 3.0062 A
4 V
4.000 A
3.9918 to 4.0082 A
4.5 V
4.500 A
4.4908 to 4.5092 A
*Check the complete Model 2308 Specifications at
www.keithley.com
for
updated current readback accuracy limits before verification.
**As measured by digital multimeter and 1
Ω
resistance value.
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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Summary of Contents for 2308
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