BOTTOM VIEW
There are five holes on the bottom which give access to the trimmers for
the fine-tuning of PPM0732 operation. The holes are closed by the hexagon socket
set screws. Please use the hex screwdriver to remove them. The generator has
been already adjusted at the factory. Therefore, normally the additional adjustment
is not required in the End User laboratory. Please consult with Megaimpulse Ltd.
before adjusting the trimmers.
FEEDBACK – corrects the possible skew of the output pulse relative to the
trailing edge of the triggering pulse at different repetition rates. The adjustment is
required if the pulse position is correct at some repetition rate (for example at
1kHz) but shifted up to 1 ns at another repetition rate (for example at 5 kHz).
INT_DELAY – adjusts the internal delay of the generator which allows to shift of
the phase capture window and make it the same for all the generators within the
array.
SET_TEMP – sets the temperature which the cooling system will keep stable by
changing the fans rotating speed.
AMPLITUDE – adjusts the amplitude of the output pulse. Please be careful with
this trimmer, too high set amplitude may result in permanent damage to the output
HV components.
WAVEFORM – adjusts the output pulse waveform which helps to make output
pulse more narrow and sharp, as well as adjusts the prepulse amplitude and pulse
width.
PPM0732 User Manual 9
