AMETEK CTS 3.0 - Manual (Page 89)

User Manual Compliance Test System 3.0
85
Field /
Control Location Description
Power
button Upper left
corner Click on Power to toggle the power source output voltage, unless
power source is already programmed to 230V. The Flicker module
can be configured to turn off the power after every test, in that case
therefore, the user will have to click Power On before starting the
test.
Start button Upper left
corner Starts the flicker test using presently selected parameters. Once a
test is running, parameter cannot be changed. Starting a test also
causes data to be written to the test data file.
Stop button Upper left
corner Stop the acquisition process. The Stop button can be used to abort
a test prematurely. The data files will be closed and will only contain
data up to the point at which the test was aborted.
Report Button Upper left
corner Used to produce a test report in WORD. A WORD must be
installed to generate the report.
Power Button Upper left
corner Can manually toggle the power on/off. A PC to power source
communication is needed before it is enabled.
Frequency Left Panel Displays signal frequency
V-rms (volt) Left Panel Displays Voltage rms value
Test Start
Time Left panel This field always shows the start time of the test in progress. The
test duration is shown in the bottom panel.
Highest d
c
% Left panel Displays the highest Relative Steady State voltage change (d
c
) in %
found so far during the test. This represents the difference between
two adjacent steady-state voltages relative to the nominal voltage.
The standard requires that d
c
must be less than or equal to 3 % for
the EUT to PASS.
Highest d
max
% Left panel Displays the highest Maximum relative voltage change (d
max
) in %.
found so far during the test. This represents the difference between
the maximum and minimum rms values of the voltage change
characteristic relative to the nominal voltage. The standard requires
that d
max
must be less than or equal to 4 % for the EUT to PASS.
Highest d
t
% Left panel Displays the highest Relative voltage change characteristic (d
t
).
This value represents the change in rms voltage, relative to the
nominal voltage, as a function of time and between periods when
the voltage is a steady state condition for at least 1 second. The
standard requires that d
t
must be less than 3 % for the EUT to
PASS, although it is permitted to be between 3 and 4 % for less
than 200 msec.
Highest Psti Left panel Displays the highest Short Term Flicker value found so far during
the test. Each Short Term Flicker severity is evaluated over period
of 10 minutes. The threshold of irritability is Pst = 1 and this value is
used as the PASS/FAIL limit.
Highest Plt Left panel Displays the highest Long Term Flicker value (Plt) found so far
during the test. The Plt period is 120 minutes and is calculated
using successive Psti values. The threshold of irritability for long
term flicker is 0.65 and this value is used as the PASS/FAIL limit.
Test Status Center
panel This field provides a visual indication of the test result. A Green field
with Pass indicates the EUT passes the Flicker test, a Red field
with Fail indicates the EUT causes too much flicker. Note that the
condition of this field is affected by the user selected test margin.
To use the actual IEC test limits, the test margin should be set to