AMETEK Compact i/iX Series User Manual
Page 66
User Manual
Compact i/iX Series
AMETEK Programmable Power
California Instruments
66
4.2.6 MEASUREMENTS Screens
The i/iX Series uses a DSP based data acquisition system to provide extensive information regarding
the output of the Source. This data acquisition system digitizes the voltage and current waveforms and
calculates several parameters from this digitized data. The results of these calculations are displayed
in a series of measurement data screens. A total of three measurement screens are used to display all
this information.
Figure 4-7: MEASUREMENT Screen
The Measurement screens available on the iX Series are not menus in that no changes can be made
anywhere. Instead, these screens provide load parameter readouts. The measurement screens can be
reached by successively pressing the Meas key, which will toggle to all available screens. Note that for
i Series models, only the first two screens are available. For the iX series, all three measurement
screens are available.
The following parameters are available in the measurement screens:
ENTRY
DESCRIPTION
MEASUREMENTS 1
VOLTAGE
This value is the true rms output voltage measured at the voltage
sense lines.
CURRENT
This value is the true rms output current drawn by the load.
FREQ
The output frequency is measured at the sense lines.
TRUE POWER
This value is the real power.
MEASUREMENTS 2
VA POWER
This value is the apparent power.
POWER FACTOR
This readout shows the power factor of the load.
PEAK CURRENT
This value is the instantaneous peak current. See also PEAK CURR
in MEASUREMENTS 3 screen.
CREST FACTOR
This readout displays the ratio between peak current and rms
current.
MEASUREMENTS 3 (iX Models only)
CURR THD
This readout displays the total current distortion for the selected
phase. The distortion calculation is based on the H2 through H50
with the RMS current in the denominator. Note that some definitions
of THD use the fundamental component (H1) of the current as the
denominator.
If desired, the user can program the power source controller to use