AMETEK MXCTSH Administrator Manual - Manual (Page 18)

MX Compliance Test System System Administrator Manual
Field Description
If this field is non-0, the limits for these parameters are plotted instead.
Frequency margin Limit (in Hz) for acceptable frequency deviation. Changes in frequency below
this value are acceptable. Above this threshold, a warning is displayed.
Voltage limit The average RMS value of each acquisition window (buffer) should not be
different by more than this value from the specified nominal RMS voltage
value. (Typically 230 V or 115 V). If the difference exceeds this setting, the
buffer is considered to be a Failed buffer. This event is flagged in the V
distortion field on the main window but does not cause the test to abort.
Deviation limit A particular half cycle RMS should not be different by more than this value (in
%) from the RMS of the reference waveform acquired at the beginning of a
test. This limit applies only to Flicker tests. Normally, this value is set to 10 %
as normal voltage variations in RMS should not be this high. This event is
flagged but does not cause the test to abort.
Flicker Limits
Plt limit Pass / Fail limit for Long term flicker index Plt
Pst limit Pass / Fail limit for Short term flicker index Pst
Dc limit Pass / Fail limit for dc
Dmax limit Pass / Fail limit for dmax
Dt limit Pass / Fail limit for dt
Time dt exceeded This is maximum time for which dt may exceed the dt limit. The default value
for this parameter is 500 msec.
Flicker normalization This is a normalization scale factor that may be applied to the final Pst result.
This value is normally 1.
Impedance
PCTS Impedance R Not applicable to MXCTS system
PCTS Impedance L Not applicable to MXCTS system
Flicker Inrush Test
Threshold Current This field sets the threshold for detecting a current from an EUT off condition
used during the 24 x Dmax test. Until the current measured exceeds this
absolute level in Amps, the system will assume the EUT has not been turned
on yet. This threshold prevents false triggering on noise occurring on the
input while the EUT is in the OFF state.
Revision B 18