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A baseline can be established for both current and VII
ohm measurements and is "remembered" by both func-
tions.
Rel is enabled by pressing the REL key. Pressing REL a
second time disables the feature.
Making Current Measurements
To make current measurements:
1. Select a current range that is appropriate for the ex-
pected measurement or enable autorange (press
SHIFT and then AUTO RANGE).
2. Enable zero check and, if the display is not zeroed,
perform zero correction by pressing SHIFT and
then CORRECT.
3. Connect the current to be measured to the input of
the Model 486/487 (see Figures 1 and 2).
4. Disable zero check and read the measured current
on the display of the Model 486/487.
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