AMETEK MX CTSH - Manual (Page 137)

User Manual MX Series CTSH Compliance Test System
Field Description
Impedance
These fields set the flicker reference impedance values when using
programmable impedance.
They are also used to set the Ztest impedance values of the OMNI-3-75.
These values are used by the flicker software to scale the test results to the
IEC 725 flicker reference impedance.
For single phase mode, they should be set to 250 and 796. For three phase
mode, to 150 and 477.
If the programmable impedance of the MX30-3Pi or MX45-3Pi is used,
these values will be used to program the MX45. Note than the maximim R
and L settings for the MX30-3Pi or MX45-3Pi are 200 mOhm and 200 uH.
Values used may differ between European and Japanese standards. The
Japanese standard presently requires the use of the reference impedance
for both harmonics and flicker tests. During harmonics tests, this will result
in high voltage distortion. This conflict has not been resolved at this time.
System
Configuration This setting determines if a reference impedance is used and if so, which
type. Available choices are:
No CI power
source Select this option if you are not using a CI AC Source or have no OMNI
impedance.
External OMNI
exists
Select this option if you have an OMNI-3-75 connected to the MX through
the system interface cable.
Also select this option if you have an OMNI-3-37MX controlled from the
front panel.
AC Source with
Programmable
Impedance Select this option if the programmable impedance of the MX30 or MX45 is
used in addition to external reference impedance. In this mode, the external
OMNI has to be engaged either manually or through the MX front panel.
Original
Calibration
Information
Shows original calibration date of CTS system.
Calibration Data
Update
Information
Shows the last date the system calibration data was changed and by
whom.
California Instruments Revision G 134