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Document #7650-0038 Rev A1. © Copyright 2019 Directed Energy, Inc. All rights reserved.
6.0 OPERATING INSTRUCTIONS
This section provides basic operating instructions for the PVX-4140 B. Additional
application information may be found in Section 7.0.
WARNING
1. There are NO user serviceable items inside this instrument. The cover should
NEVER be removed.
2. Do not remove the input or output cables while the instrument is in operation. Never
short-circuit the output of the instrument. Failure to observe these precautions can
result in potential electric shock to personnel, arcing, and damage to the connectors
and system.
3. Pulsed power systems are capable of random triggering via transients. When the
PVX-4140 B is turned on, or voltage is present in the chassis, assume it is possible
to get a pulse on the output connector.
6.1 Power-Up Procedures
The instrument should be powered up using the procedures detailed in the Section
above. When this is accomplished, it can be adjusted for the particular application
through the following procedure:
1. Monitor the output of the PVX-4140 B on an oscilloscope utilizing a high voltage
probe connected to the load, or with a coax attached to the Voltage Monitor output
on the front panel. Set the output amplitude of the PVX-4140 B to the desired level
by adjusting the output voltage of the high voltage power supplies.
2. Set the output pulse width and pulse repetition frequency by varying the controls
of the Gate input pulse generator. The output pulse width should be set by
monitoring the output of the PVX-4140 B. The output pulse voltage will follow the
gate input, but will not replicate in time the exact duration of the Gate input due to
the system propagation delay.
6.2 Power-Down Procedures
1. Set the high voltage power supplies to zero.
2. Turn the high voltage power supplies OFF.
3. Turn the PVX-4140 B power switch OFF.
4. Allow the instrument to bleed off the stored energy (approximately five minutes).
5. Disconnect the AC power to the instrument.
