5520A
Operators Manual
4-26
nn321f.eps
• & REF MENUS (Phase Difference and 10 MHz reference source.) Selects the phase
difference between the NORMAL and AUX outputs, selects internal or external 10
MHz reference, and sets the phase difference between an external master 5520A
(using 10 MHz IN/OUT) and the NORMAL output. See “Adjusting the Phase” and
“Synchronizing the Calibrator using 10 MHz IN/OUT” later in this chapter.
• LCOMP turns inductive compensation on and off. Inductive compensation is
available for frequencies up to 1 kHz at outputs up to 239.999 mA, and for
frequencies up to 440 Hz above 239.999 mA.
• OUTPUT shows whether the output is on the AUX or 20A terminals. Outputs 3A or
above are always on the 20A terminals.
• WAVE (waveform) selects one of four different types of waveforms: sine wave,
triangle wave, square wave, and truncated sine wave. (See “Waveform Types” later
in this chapter for more information). Whenever a non-sinusoidal waveform is
selected, the Output Display will convert the RMS reading to p-p (PP).
4-26. Setting DC Power Output
Note
Tie the terminals NORMAL LO and AUX LO together at the UUT or at the
5520A, via the “LO”s softkey selection “tied.”
The calibrator produces a dc power output by sourcing a dc voltage on the NORMAL
outputs and a dc current on the AUX outputs. Complete the following procedure to set a
dc power output. If you make an entry error, press Gone or more times to clear the
display, then reenter the value.
Caution
Verify the applied voltage to the UUT does not exceed the
rating of the UUT insulation and the interconnecting wiring.
1. Press R to clear any output from the 5520A.
2. Connect the UUT as described earlier in this chapter under “Connecting the
Calibrator to a UUT” by adapting the voltage and current connections.
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