Arbiter Systems 931A, Operation Manual

Page: 61 / 161

NOTE: The Model 931A does not provide for measurement of voltage
between voltage inputs and chassis ground lug. Make all measurements
between two (or more) of the voltage inputs. The ground lug is included
for safety purposes only, especially during battery operation. See Sec-
tion 3.2.1.
3.5.1.2 Configuring the Channels
Configure the chosen measurement channel after connecting the voltage
to the appropriate input terminals. If measuring only one AC voltage
(e.g. single-phase), use Channel 1, since this channel is used for frequency
measurements.
Press the CHANNEL 1 SELECT key to configure the measurement
channel and to display the following menu:
Arrows form the cursor, highlighting 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 the ENTER key to confirm the selection.
Measure two separate voltages concurrently by configuring both Chan-
nels 1 and 2. For example, use the selection method above to use Channel
1 to measure “Van” and use Channel 2 to measure “Vcn”. The two voltage
signals must have the same fundamental frequency.
3.5.1.3 Performing the Measurement
Press the VOLTS/AMPS key to display the measured AC voltage and
produce a display similar to the one shown below:
The large number at the top of the display indicates the voltage
45