User manual - DATA RECORDER SRD-99 and cooperating software
3.4.
LIST OF ERRORS AND FAULT DIAGNOSTICS
Symptom
Cause
Action
All points are a red colour
and a question mark (?) is
displayed instead of current
values
converter fault or one of
converter's connections
is broken
•
check converter power supply
•
check connection of transmission line with
converter
•
check correct operation of computer’s
serial port (e.g. by connecting mouse to
the port supporting the converter)
Some points are a red colour
(and question marks are
displayed instead of current
values)
Transmission line fault
•
check connections on the first transducer
that "does not reply"
•
check continuity of transmission line from
the place where the lack of
communications occurred
One of the points is a red
colour (and question mark is
displayed instead of current
value)
Transducer fault
•
check transducer connections
•
if the control LED flashes at high rate, then
the transducer has a faulty sensor.
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