AMETEK CTS 3.0 User Manual

Page 78

Compliance Test System 3.0

User Manual

Setting

Description

IEEE-488 control

This selection requires the presence of a National
Instruments IEEE-488 controller card or compatible card in
the PC. This interface is not supplied as part of the CTS
system but may be added as an option. The Verify Source
must be used to make sure the AC Source can be found.
The AC source must be powered up. The View Bus button
may be used to bring up the command trace for trouble
shooting purposes if the presence of source cannot be
verified. When using remote control, the user can select
to have the front panel locked or not by setting the Disable
checkbox.
Note that support for the Pacific Power Source AMX with -
1UP or -3UP controllers is provided as well.

Test Data

Test data for each test can be saved to disk for later replay or report generation.
If this option is not selected, the test cannot be replayed later or printed. For
most situations, it is recommended to save the test data. For debugging
sessions, it may be acceptable to turn off this option to preserve disk space.

Class C and D Test
Limits

Test limits for class C and D are not fixed but rather depend on the EUT power
level and or power factor. The CTS 3.0 uses the generally accepted dynamic test
limit calculation method to determine the correct limits for each acquisition
window.
Using the settings in this frame however, the operator may override this
implementation and set a fixed limit for Class D and C. The time for which to
acquire power and or power factor data from the EUT can be set in the Duration
field in seconds. For three-phase mode, the power can be averaged over all
three phases.

Sample and Hold

This option allows CTS systems with and without sample and hold circuitry to be
used. In the absence of a S/H circuit, the CTS 3.0 software will perform phase
correction between voltage and current channels.

Time filter duration
for transitory
harmonics filtering.

This value should be set for 1.5 seconds to comply with the IEC 61000-3-2
standard. Future standard changes may require this value to be changed.

Table 5-2 : IEC Harmonics Advanced Setup Parameters