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Document #7650-0038 Rev A1. © Copyright 2019 Directed Energy, Inc. All rights reserved.
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Pulsed power systems are capable of random triggering via transients. Whenever
the PVX-4140 B is turned on, or voltage is present in the chassis, assume a pulse
can appear on the output connector.
Directed Energy, Inc. (DEI) provides information on its products and associated
hazards, but it assumes no responsibility for the after-sale operation and safety
practices.
3.1 Power Source
The PVX-4140 B is designed to operate from a power source that will not apply more
than 240 volts AC between the supply conductors or between either supply conductor
and ground.
A protective grounding connection by way of the grounding conductor in the AC power
cord is essential.
3.2 Grounding
The PVX-4140 B is grounded through the grounding conductor of the AC power cord.
To avoid electrical shock, plug the PVX-4140 B into a properly wired receptacle
before making connection to any input or output connectors.
Use only a power
cord that is in good condition.
3.3 General Operating Precautions
Do not remove the input or output cables while the instrument is in operation. Never
short-circuit the output. Failure to observe these precautions can result in potential
electric shock to personnel, arcing, and damage to the connectors and the instrument.
4.0 OPERATING CONSIDERATIONS
4.1 Output Cabling
The PVX-4140 B is designed to drive capacitive loads with fast rise times. Since the
output current is limited, increasing the load capacitance lengthens the rise time. If the
load is fixed, only the type and length of the interconnecting cable will vary the output
capacitance.
The instrument is supplied with a 6-foot length of RG-59 coaxial cable that has a
capacitance of 21.5 pF per foot. The instrument is series-terminated in the
characteristic impedance of the cable (75 Ω). DEI recommends using the shortest
possible cable to ensure the fastest rise times and best pulse fidelity.
