NOVUS DC80L - Manual (Page 10)

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5.3. PROTECTION
The MODEL DC80L calibrator uses two protection fuses, rated 125 mA / 250 V,
internally connected in series with the current terminals (2) and (4).
To avoid personal injury or damage to the calibrator, use only 125 mA / 250 V fast
fuses.
Notes on fuses:
- Fuse 1 is probably blown out when the display flashes the message OL while
in Voltage output mode with the leads removed from the calibrator.
- Fuse 2 is probably blown out if the calibrator reads 0.000 in mA input mode,
even under the presence of a current input signal
5.4. MODEL DC80L OPERATING INSTRUCTIONS
DC mV and V measurements
1. Press the power switch to
turn on the Calibrator.
2. Press the INPUT / OUTPUT
mode key to select INPUT
mode.
3. Press the V/mV mode key
to select mV input .
4. Plug the red test lead to “V” jack
and the black one to the
“COM” jack .
5. Connect the test leads
according to the signal polarity:
red to the positive polarity, black
to the negative polarity (GND).
6. Measurement value is shown on
the display .