Fluke 80i-410 - Operation; Battery Test

-170.0mV Sa LEN
y = O.K.
-100.0mV EBENEN
-99.9mV
| Me |- ES ©
Ys
N |
Figure 1.
OPERATION
Battery Test
Use the following procedure to test the batteries:
1. Connect the probe output leads to the voltmeter inputs: black to
COMMON or LOW, and red to VOLTS. (See Figure 1.)
2. Set the voltmeter function to de millivolts (de mV== ), and turn
the voltmeter power on. Select a range capable of displaying 170
mV dc.
3. Verify that the power switch on the probe is inthe OFF position.
4. Observe the voltmeter reading. If the reading falls between -
100.0 and -170.0 mV, the probe is ready for use. (New batteries
should read approximately -150 mV.)
5. If the reading falls between 0.0 and -99.9 mV, both batteries
should be replaced. If the voltmeter reading is positive, either the
test leads are reversed or the batteries are installed incorrectly.
Demagnetizing
When the 80i-410 DC/AC Current Probe has been used for a current
measurement and then removed from the conductor, a small amount
of residual magnetism often remains in the core. This residual
magnetism will generate a dc offset at the probe output. In other
words, the voltmeter will show a small dc reading even though there
is no current passing through the jaws of the probe. The residual
magnetism should not cause a problem for ac current measurement
because the ac voltage function in most multimeters is ac coupled;
therefore, the dc offset will not be displayed. However, for de current
measurements, the dc offset caused by the residual magnetism will
contribute to reading errors. The residual magnetism can be mini-
mized as follows (see Figure 2):
Figure 2.