AMETEK CTS 3.0 - Manual (Page 53)

User Manual Compliance Test System 3.0
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You may now apply a load to the CTS. Typically, this will be the 230 Volt – 50 Hz supply voltage
that is used to power the products to be tested. This voltage is routed to logical channel 0 of the
A/D card, via a differential input amplifier and a 100: 1 attenuation factor in the PACS. On the
Exacq Bench menu bar, select “Instrument”, “Volt Meter”. Thus, the Exacq Bench DVM function
will display approximately 1.00 volt for a 100 Volt AC voltage setting of the power source, such as
may be used in Japan (see the example of the DVM function below). The display should be about
2.30 Volt rms for a 230 Volt
– 50 Hz input voltage. Note that the system calibration will eliminate
small errors due to hardware tolerances. Thus, the ratio is not necessarily exactly 100:1.
Figure 3-15: Exacq DMM Screen