DEI PCX-7420, Operation Manual, Page: 6 / 32

Page 6 of 32
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Document #7650-0004 Rev C2. © Copyright 2019 Directed Energy, Inc. All rights reserved.
6. Set the pulse width.
 Press the Pulse Width button on the touch screen.
 Press the encoder knob to set the resolution.
 Turn the encoder knob to set the pulse width from 0.05 µs to 5000 µs.

Press the Done button.
7. Set the bias pulse width.
 Press the Bias Width button on the touch screen.
 Press the encoder knob to set the resolution.
 Turn the encoder knob to set the bias pulse width from 0 µs to 25000 µs.
 Press the Done button.
8. Enable the PCX-7420.
 Press the ENABLE button on the front panel. The button illuminates.

Controlling the PCX-7420 From a Computer
1. Disable the PCX-7420.

Send the command “OUTPUT:DISABLE”.
2. Set the main output current.
 Send the command “MAIN:CURRENT:SETPOINT n”. n = [0 to 15700]. Units
are milliamperes.
3. Set the bias output current.
 Send the command “BIAS:CURRENT:SETPOINT n”. n = [0 to 5800]. Units
are milliamperes.
4. Set the trigger to internal or external as needed .

Send the command “TRIG:INTERNAL” or “TRIG:EXTERNAL”.
5. Set the internal trigger frequency.
 Send the command “TRIG:INT:FREQ n”. n = [40 to 6000]. Units are hertz.
6. Set the main pulse width.
 Send the command “TRIG:INT:MAIN:PULSEWIDTH n” n = [50 to 5000000].
Units are nanoseconds.
7. Set the bias pulse width.
 Send the command “TRIG:INT:BIAS:PULSEWIDTH n” n = [0 to 25000000].
Units are nanoseconds.
8. Enable the PCX-7420.

Send the command “OUTPUT:ENABLE”.