Directed Electronics PDG-2515/2520 Troubleshooting Guide

PDG-2515/2520 Operating Manual
Page 17 MNPDG2515-2520R0.doc
© 2004 Directed Energy, Inc.
Troubleshooting Guide
No power LED or screen
does not come up. Check power source, power switch (located on rear of unit).
Pulse exhibits excessive
ringing. Check load impedance.
Frequency limits. Check duty cycle of EACH channel, both channels
must be within the specifications of the unit to
increase the frequency. Note that duty cycle of a
channel is the addition of the pulse width and the
delay.
Pulse Width limits. Check the frequency and duty cycle. Note that duty
cycle of a channel is the addition of the pulse width
and the delay settings.
Pulse Delay limits. Check the frequency and duty cycle. Note that duty
cycle of a channel is the addition of the pulse width
and the delay settings.
In external trigger pulse is
not stable or consistent
with settings.
Check duty cycle of input trigger signal, check that
the signal frequency and trigger signal duty cycle are
within specification.
In Burst Mode pulse is
not stable or consistent
with settings.
Check to make sure timing constraints are not
exceeded; duty cycle of frequency is not exceeded
with the addition of extra pulses.
Configuration will not
load. Make sure a valid configuration had been previously saved in configuration slot.
Sync output not a square
wave or has excessive
ringing.
Check sync lines termination; note that sync does
not have same impedance as output lines.