Omicron Lab CT Analyzer, User Manual

Page: 143 / 254

141
Using the Quick Test Feature
f Frequency of the output signal. Only available for AC voltage
or current output.
Possible values: Any value between 5.0 and 400.0Hz or soft
keys
16.7Hz , 50Hz , 60Hz or 400Hz .
Default: 50Hz
Measurement
Mode Measurement mode.
Possible values:
DC , RMS or f-sel. filter . Default: RMS
DC measurement:
Measures the DC part of the signal only.
RMS measurement:
Performs a standard true RMS measurement of the signal.
Frequency selective measurement:
Allows high precision measurement of the fundamental wave
of an applied signal. All frequencies outside the output
frequency plus/minus the filter bandwidth are supressed by at
least 110 dB. This measurement mode is deactivated for
output signal type DC.
See also "B-width" below.
B-width Filter bandwidth for frequency selective measurement. Only
available for measurement mode
Freq. sel. filter .
Possible values: 3Hz to 20Hz. Default: 6Hz
Depending on the filter bandwidth selected, the measurement
time can differ considerably. The typical time needed for a
frequency selective measurement depends on the filter
bandwidth as follows:
Filter bandwidth Measurement time
3Hz approx. 5 seconds
6Hz approx. 4 seconds
Load Only available for AC signal output.
Setting the
Load parameter to "on" and specifying the
winding resistance and the unsaturated inductance in the
fields
R and L will prevent saturation of the connected CT.
The output generator of the CT Analyzer then keeps the DC
part of the output current at zero using a current regulator
permanently running during the output of AC signals.
Possible values:
On or Off . Default: Off
Parameter Description