Chapter 3: 11
0.444 mA 10 mA/M
0.790 mA 17.8 mA/M
1.404 mA 31.6 mA/M
2.485 mA 56.2 mA/M
4.44 mA 100 mA/M
For example, if the telecoil amplitude is set to 10 mA/M, the meter should read .444
mA within tolerance.
3.6 Battery Simulator Voltage Accuracy
Instrument required: Precision D.C. voltmeter.
Setup: Connect the voltmeter to the battery pill jack in the sound chamber. Make
sure nothing else is connected to this jack.
Measurement: Press menu from the opening screen to enter the default settings
menu. Press F1 and select “coupler.” Set battery chemistry to silver. Measure the
voltage and see that it is 1.5V within 15 mV plus the tolerance of the voltmeter. Set
battery chemistry to Zinc-Air. Measure the voltage and see that it is 1.3V within 15
mV plus the tolerance of the voltmeter.
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