AMETEK MX15 Series - Manual (Page 82)

User Manual – Rev M California Instruments
MX15 82
ENTRY DESCRIPTION
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
the fundamental component as the denominator. This mode can only
be programmed over the bus by sending the “MEAS:THD:MODE
FUND” command. At power up or after a reset command, the mode
will revert back to RMS.
PEAK CURR This readout reflects the highest peak current value detected at the
output. This is a track and hold peak current measurement. To
measure inrush current for a unit under test, open the output relay
and reset the peak current value using the BACK key. Then program
the output voltage and frequency and turn on the output relay. The
peak current measurement will continuously track the maximum
current value detected until reset. See also PEAK CURRENT in
MEASUREMENTS 2 screen.
VOLT THD This readout displays the total voltage distortion for the selected
phase. The distortion calculation is based on the H2 through H50
with the RMS voltage in the denominator. Note that some definitions
of THD use the fundamental component (H1) of the voltage as the
denominator.
If desired, the user can program the power source controller to use
the fundamental component as the denominator. This mode can only
be programmed over the bus by sending the “MEAS:THD:MODE
FUND” command. At power up or after a reset command, the mode
will revert back to RMS.
PHASE Relative voltage phase angle measurement with respect to phase A.
This readout is only relevant if an external clock source is used.
Update Program Functions from Measurement Screen
The Shuttle knob can be used to update voltage and/or frequency settings while the
measurement readout screen is displayed. To do so, select the desired parameter to be
changed while in the SET screen using the left arrow cursor. Then, select the measurement
screen by pressing the MEAS button. While the measurement screen is visible, the shuttle
continues to operate.