11/12/2009
4
of
4
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Test Procedure
The test procedure is achieved by following the sequence below step-by-step.
1. Connect the voltmeter (V) between R1/R2 midpoint and GND.
2. Connect the power supply (PS) between VBAT (+) and GND (-).
3. Turn the power supply on.
4. Measure the voltage on voltmeter (V).
5. Turn the potentiometer R2 and adjust until voltage is
0.22V
.
6. Measure the LED current (A).
7. The LED current must be between:
270mA
≤
I
LED
≤
330mA
.
8. Measure the supply current on the power supply.
9. The supply current must be between:
90mA
≤
I
SUPPLY
≤
115mA
.
10. Turn off the power supply (PS).
11. Disconnect the CAT4201 evaluation board.
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