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Document #7650-0038 Rev A1. © Copyright 2019 Directed Energy, Inc. All rights reserved.
Generating a Negative Pulse with the PVX-4140 B
4.6 Controls and Indicators
4.6.1 Power Switch and LED
The power switch on the rear panel controls all AC power in the instrument. The
Power LED on the front panel illuminates when AC power is turned on.
4.6.2 Enable Button and LED
The Enable button enables and disables the pulse output. The Output Enabled
LED illuminates when the output is enabled.
4.6.3 Gate Connector
Logic-level pulses at the Gate input control the output. The input requirements are
+5 V into 50
Ω
with a rise time less than 20 ns. The output pulse follows the Gate
input signal’s pulse width and frequency.
4.6.4 Gated LED
The Gated LED illuminates when a gate signal of the appropriate amplitude and
width is received. If the Gated LED is not illuminated, the PVX-4140 B will not
generate an output pulse.
4.6.5 Over Current LED
The Over Current LED illuminates if the output pulse current exceeds either the
positive or negative current limit value.
Input Gate:
+5
V
Ground
Output Pulse:
V
high
V
low
