User Manual – Rev BE AMETEK Programmable Power
MX Series 164
2) Move the cursor to the UTILITY entry and press ENTER. You
are now in the UTILITY 1 menu.
3) Move the cursor to the INITIAL SETUP field and press ENTER.
You are now in the INITIAL SETUP 1 menu.
4) Move the cursor to the MORE field at the end of this menu and
press the ENTER key. You are now in the INITIAL SETUP 2
menu.
5) Move the cursor to the MORE field at the end of this menu and
press the ENTER key. You are now in the INITIAL SETUP 3
menu.
6) Move the cursor to the WAVE GROUP = field. You can now use
the knob or the 0 through 3 keys on the front panel to select a
different waveform group.
7) Press ENTER to confirm your new selection.
8) To activate your new selection, YOU MUST CYCLE THE POWER
so the AC source re-initializes. If the source is operated over
the bus, a IEEE-488 Device Clear or reset command (*RST)
command will have the same effect.
The new wave group will be active after you turn the power to the unit back on.
4.4.5 RMS Amplitude Restrictions
The output of a sine wave may be programmed to the full rms value of the
voltage range selected. If the AC source is in the 300 V range, the maximum
programmable rms voltage is 300 Volt. If a custom waveform is used however,
the maximum programmable rms voltage may be less than the maximum range
value. The voltage range limit is based on the use of a sine wave with a 1.414
crest factor. A 300 V rms sine wave has a 424 Volt peak voltage. The AC source
has a maximum peak voltage capability that is determined by the selected
voltage range. If the user selects a custom waveform with a crest factor that is
higher than 1.414, the peak voltage will exceed this maximum if the rms
voltage were to be programmed at 300 V rms.
The MX Series power source automatically limits the maximum allowable
programmed rms voltage of a any custom waveform by calculating the crest
factor of the selected waveform and controlling the rms limit accordingly. Thus,
each custom waveform may have a different maximum rms value. The 3Pi
controller will prevent the user from programming the rms voltage above this
limit. If a value is entered in the PROGRAM 1 menu above this value, a “Voltage
peak error” message is generated.