Javelin D
Ɣ
Model PD644 Voltmeter
Instruction Manual
53
Troubleshooting Tips
Symptom Check/Action
No display at all
Check power at power connector.
Not able to change setup or pro-
gramming,
LoCd
is displayed
Meter is locked, enter correct four-digit
password to unlock.
Meter displays error message
during calibration (
err
)
Check:
1. Signal connections
2. Input selected in
Setup
menu
3. Minimum input span requirements
Meter displays
x
9999
x
-1999
Voltage at Signal connector out of
range.
Display alternates between
1.
Hi
and a number
2.
Lo
and a number
Press
Menu
to exit Max/Min
display readings.
Display response is too slow
Check filter and bypass values.
If the display locks up or the meter
does not respond at all
Cycle the power to restart the
microprocessor.
Relay operation is reversed
Check:
1. Fail-safe in Setup menu
2. Wiring of relay contacts
Relay and status LED do not
respond to signal
Check:
1. Relay action in Setup menu
2. Set and reset points
Meter not communicating with
other devices
Check:
1. Serial converter and wiring
2. Serial protocol selected
3. Meter address and baud rate
Meter flashes
err2
at power on.
Hardware failure. Contact Technical
Support to arrange for repair.
Other symptoms not described
above
Call Contact Technical Support for
assistance.
www.
GlobalTestSupply
.com
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