Arbiter Systems 931A, Operation Manual

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Arrows form the cursor, which highlight one of the selections. Press
the arrow keys to locate the measurement value. For example, using the
arrow keys move the cursor to “Van” to measure an AC voltage between
inputs “A” and “N”. Press ENTER to confirm selection.
Press CHANNEL 2 SELECT to configure Channel 2 in the same way
as for channel 1. An almost identical menu (except for In ) will appear:
Move the cursor to the desired measurement value and press ENTER to
confirm the selection. For example, using the arrow keys move the cursor
to “Ia” to measure an AC current at the “A” input terminals.
3.6.3.2 Performing the Measurement
Press VA/PF to produce a display similar to the one shown below:
The large number at the top of the display shows the apparent power
measured. The lower number shows the power factor. Also, the display
indicates whether the values are wide-band or narrow-band measurements.
Press SHIFT then BAND-WIDE to change the measurement mode to
wide-band RMS, including all frequencies up to 3.05 kHz. Wide-band
apparent power is determined by multiplying the wide-band voltage and
current as shown below. Power factor is the quotient of the Active Power
divided by the Apparent Power as seen in 3.7 and 3.8.
Wide-Band:
(3.7) V A = V
rms
×
I
rms
(3.8) P F = ActiveP ower ÷ V A
Press SHIFT then NARROW-BAND to change the measurement mode
to measure the fundamental magnitude of the voltage and current only,
using proprietary DSP algorithms.
This measurement mode ignores
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