5500A
Operator Manual
4-22
Several softkey labels appear on the Control Display in the dc current function:
OUTPUT if an auxiliary amplifier is connected to the calibrator, and a Range softkey.
Output at 5500A
OUTPUT
auto aux
330 mA
auto
locked
aux
boost
AUX terminals
• OUTPUT (Output Location) Selects the current output terminals from the 5500A
Calibrator (aux) and 5725A Amplifier (boost). If an external 5725A Amplifier is not
connected, the OUTPUT softkey label will not appear in the display.
• Range (Operating Range) Selects autorange (auto) or lock (locked) for the present
range. When auto (the default setting) is selected, the calibrator automatically selects
the range that provides the best output resolution. When locked is selected, the
calibrator will not change ranges when you are editing the output. The locked
selection is usually made when you do not want range changes that may cause a
small perturbation in the output, e.g., when checking the linearity of a given
multimeter range.
4-24. Setting AC Current Output
Complete the following procedure to set an ac current output at the 5500A front panel
AUX terminals (or 5725A Amplifier BOOST terminals if a 5725A is connected). If you
make an entry error, press G to clear the display, then reenter the value.
1. Press R to clear any output from the 5500A.
2. Connect the UUT as described earlier in this chapter under “Connecting the
Calibrator to a UUT.”
3. Set the UUT to measure ac current on the desired range.
4. Press the numeric keys and decimal point key to enter the desired current output
(maximum six numeric keys). For example, 123.456.
5. Press a multiplier key, if necessary. For example, press c.
6. Press A
7. The Control Display now shows the amplitude of your entry. For example,
123.456 mA (below).
123.456 mA
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