User manual

Compliance Test System 3.0 User Manual

5.6 Additional Setup Parameters for Harmonics

If this is first time using the CTS 3.0 system, it may be necessary to check the Additional Setup

settings. These settings can be displayed by clicking on the "Additional Setup" button on the right

hand side of the main setup window.

Figure 5-4: Additonal Settings for Harmonics Test

The following settings are available from this dialog window:

Setting Description

Pre test time This is the time during which to apply power to the EUT before staring the

harmonics measurements. This capability may be used to skip any startup

behavior of the EUT that may affect the outcome of the test. High EUT inrush

currents that exceed the AC Source's maximum peak current capability can result

in high voltage distortion. This would invalidate the test. The Pre-test time setting

can be used to hold off measurements until after the EUT has reached a steady

state condition.

Source Control The CTS system is normally supplied with a suitable AC power source to provide

stable and low distortion AC power to the EUT. The Source Control section of the

additional setup dialog is used to configure the CTS system for the AC Source

used. Available options are:

Use the AC source

from its front panel

only

This option may be needed if the AC Line is used or the AC

source used does not offer remote control capabilities. This

way of operating puts more responsibility on the operator to

ensure the correct power is applied during the test.

RS232C control Used with AC Sources that have RS232C control

capability. The Verify Source must be used to make sure

the AC Source can be found. The AC source must be

connected using the serial cable provided and 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 su

ort for the Pacific Power Sou

ce AM

with -

76 Revision N California Instruments