Fluke 5502A, Руководство оператора

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5502A
Operators Manual
4-24
A range softkey is shown on the Control Display in the dc current function (operating
range). This selects autorange (auto) or lock (locked) for the given range. When auto (the
default) is selected, the Calibrator automatically selects the range that gives the best
output resolution. When locked is selected, the Calibrator will not change ranges when
you edit the output. The locked selection is typically made to prevent range changes that
can cause a small agitation in the output, for example, when you measure the linearity of
a given multimeter range.
A different softkey shows: OUTPUT. When you select 20 A for this parameter, or you
select a current more than 3 A, the Calibrator switches to standby, and you must change
the test lead to the 20A terminal and push

to activate the output.
Set AC Current Output
Do the subsequent procedure to set an ac current output at the AUX or 20A terminals. If
you make an entry error, push

to clear the display, then reenter the value.
1. Push

to clear any output from the Calibrator,
2. Connect the UUT as in the “Connect the Calibrator to a UUT” section of this chapter.
3. Set the UUT to measure ac current on the necessary range.
4. Push the numeric keys and decimal point key to record the necessary current output
(maximum six numeric keys). For example, 123.456.
5. Push a multiplier key, if necessary. For example, push

.
6. Push

.
7. The Control Display shows the amplitude of your entry. For example, 123.456 mA
(see below).
nn079f.eps
8. Push the numeric keys and decimal point key to record the necessary frequency
output (maximum five numeric keys). Push a multiplier key, if necessary. For
example, push the kilo multiplier key

. Then push the

key. For example,
1.1234 kHz (see below).
nn080f.eps