AMETEK MX CTSH - Manual (Page 71)

California Instruments Revision H 71
User Manual MX Series CTSH Compliance Test System
Field / Control Location Description
To use the actual IEC test limits, the test margin should be set to 100 %.
This field depends on the “Window results” of all the windows up to this
test time and if any “Window result” is failed during a test, Test result will
be “Fail”. In other words, this field is “Fail” latching.
Source
Qualification Bottom Left This field displays overall AC Source voltage distortion status for the test
so far. At the end of the test, this field indicates if the AC Source failed
the voltage distortion test at any time during the test.
The VTHD indication is given to notify the user of a possible problem with
the AC source voltage distortion, which may invalidate the test results.
The test will not be aborted however if the voltage distortion is too high.
Start Time Bottom Left This field always shows the start time of the test in progress. The test
duration is shown in the bottom panel. See also the “% of test completed”
indication and the progress bar below the Start Time field.
% of test
completed Left panel During test execution, this field displays the percentage of the test that
has been completed. Once this number reaches 100 %, the test will
terminate normally. If the user clicks on the Stop button instead, it will
display the point at which the test was aborted.
Test Margin Bottom The test margin can be set by the user if a pre-compliance test is needed
and the user wants to set more stringent limits. The test margin number
defaults to 100 % to use the exact IEC limits. A lower percentage will
means the EUT has to pass lower test limits (more stringent). The value
of this field ranges from 50 % to 150 %.
Note that the limit lines in the Graph always display the 100 % IEC limits.
The test margin is only used for Pass or Fail determination.
Test Duration Bottom The test duration is the total test time selected by the user. This value can
be set from 0 to 1440 minutes (24 hours). This value should be set before
starting the test as it cannot be changed while a test is in progress. If the
duration is 0 minutes, then only one window will be acquired.
EUT Bottom This field can be used to enter information about the unit under test. The
EUT field contents will be included in the test data file and in any reports
that are printed.
Comments Bottom This field can be used to enter any information about the test. The
Comments field contents will be included in the test data file and in any
reports that are printed.
Tested by Bottom This field can be used to enter information about the operator. The
“Tested by” field contents will be included in the test data file and in any
reports that are printed.
Customer This field can be used to enter information on a customer if you are
running tests for a third party. The “Customer” field contents will be
included in the test data file and in any reports that are printed.
Voltage and
Current Graph Top right
panel This graph displays the AC voltage and current waveforms. At all times,
two periods of the AC signal are displayed. The voltage is shown in
yellow, the current in green. For Class D tests, the special wave shape
template is displayed in the same graph using red. The percentage of the
EUT current outside the template is shown directly below the graph.
Harmonics
Graph Bottom
right panel The Harmonics graph panel can be used to display the current harmonics
(green) and test limits (red) during the test. It is also possible to toggle this
display to show the AC voltage harmonics. The drop down control located
at the top of the Harmonics graph panel can be used to select alternate
display modes.
Legend buttons Graph
panels The Legend buttons can be used to display a pop-up window that shows
the color-coding used in each graph.