79
MAN0530 Issue 09 October 03
Searchline Excel
2104M0506
6. PROBLEM SOLVING
Fault/Problem
Causes
Remedies
Comms Error
Wrong communication mode
1)
Select
Change Mode
option on the Interrogator.
reported by
selected on the Interrogator
2)
Change the communication mode to
Excel
.
Interrogator
Interrogator software version
Version
1V00
Interrogator software to be used with Excels
software
is incompatible with Excel
running
1V0
software.
software version
Version
2V0
Interrogator software can be used with Excels
running
2V0
software or higher.
Version
3V0
and
3V1
Interrogator software can be used
with Excels running
3V0
software or higher.
The latest versions of Interrogator software is
4V0
.
This versions work with
3V0
and higher Excels, Optima
and Optima Plus.
Incorrect communication
1)
Check that Interrogator is correctly plugged into the IS
connection
socket on the DVC100/DX100/DX100 (M) junction
box.
2)
Check that the RS485 A and B wires from the Excel
unit have been connected to the correct terminals
inside the DVC100/DX100/DX100 (M) junction box.
Excel unit is not powered up
Check that the +24V supply is reaching Excel unit correctly.
The Supply voltage at unit should be b18V and
+32V.
Interrogator battery low
Check the Interrogator battery and replace if low. See
Appendix A. Section A.4.3.
I
nterrogator
The installation has failed to
1)
Check that the signal levels reaching the Receiver are
Installation
meet the acceptable criteria
greater than 0.7 and less than 1.5.
Failed
message
of the Instrument Assisted
2)
Check that the correct range has been entered for the
when attempting Alignment (IAA) check
installed path length.
initialisation
3)
Check that the alignment of the Receiver has been
fully optimised.
The received signals must be peaked up to the
maximum achievable. Adjusting the alignment until the
signals are just above the minimum signal threshold
and then leaving it at that is poor practice and will not
always result in an installation that passes the IAA
check criteria.
4)
Check the alignment of the Transmitter.
5)
Check that there are no objects obscuring part or all of
the beam path.
6)
Check that the windows of both the Receiver and the
Transmitter are clean.
7)
Check that the structures that the Transmitter and
Receiver are mounted on are stable and free from
significant angular movement/vibration.
8)
Check that there is no gas in the beam - which
prevents successful zeroing.
9)
Installation will fail in conditions of low visibility or
fluctuating atmospheric transmission - which
degrade signal quality. Do not attempt installation
during conditions of heavy rain, snow or fog.
