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Page 22 PRC70-EN-V2.1 12/11
Warning
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Before connecting the calibrator to the device under test, switch OFF the power to the device.
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Do not apply voltage or current exceeding the allowable voltage (60 V) or current (55 mA). Exceeding the limits will
endanger instrument and also create a risk of personal injury due to electrical shock.
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Mistaking the H voltage input terminal for the mA current input terminal, and vice versa, when wiring, is extremely
dangerous. Take great care in making connections and always double check the accuracy of the connection
configuration.
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The current input terminals are equipped with a built-in current input protection fuse. Over-current input to the terminals
will cause the fuse to blow. If the fuse is blown, replace it following specified ratings. For details on fuse replacement,
see the “Replacing the battery and fuse” section.
Warning
Wiring or operational errors can lead to damage to the instrument and personal injury due to electrical shock. Exercise the
utmost care when carrying out the measurement tasks.
8.2 Measuring DC Voltage
Step 1:
Ensure that the test lead cables are not connected to the instrument or device under test.
Step 2:
Using the function key
(FUNC),
select the DC Voltage measurement function.
Step 3:
Connect the test lead cables to the terminals of the instrument under test.
Step 4:
Using the
(RANGE)
key, select a range from 50mV, 500mV, 5V, 50V. The selected function, the measured value,
and the unit of measure are shown in the upper area of the LCD.
8.3 Measuring DC Current
Step 1:
Ensure that the test lead cables are not connected to the instrument or device under test.
Step 2:
Using the function key
(FUNC)
, select the DC Current measurement function.
Step 3:
Connect the test lead cables to the measuring terminals of the instrument under test.
Step 4:
The selected function, the measured value, and the unit of measure are shown in the upper area of the LCD.
87.3.1 mA % Display
In the mA measurement mode, pressing the
(RANGE)
key converts the measured value to the mA% mode (shown on
the upper area of the LCD). See the equation below.
100 (current measured value mA-4mA)
mA %= %
16 mA
Press the
(RANGE)
key again to return to the measured value, shown on the upper area of the LCD.
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