User's Manual

708UM0210-01 October 1999 Autotag-P User Manual Page: 28 of 33
7. CUSTOMER FAULT ANALYSIS
Possible problems experienced during commissioning, and their solutions:
FAULT CAUSED BY REMEDY
The site regularly has several
vehicles queuing to enter and exit
the building. The Base Station unit
detects vehicles other than the first
in line, or detects several vehicles
at the same time.
Base Station range set too high or
there is an orientation problem with
the Base Station.
Reduce the range so that only the
nearest vehicle is detected.
If the problem persists then it is
most likely an orientation problem.
In situations where it is important
that individual vehicles are
detected in the correct order (such
as pay-parking), do not mount the
Base Station pointing back along
the line of vehicles (such as on an
overhead gantry). Rather mount it
so that it faces the foremost car
but is pointed away from the
others. For example, mount it to
the side of the lane, pointing
perpendicular to the road (see the
wall mount in Figure 5.2). Also,
mount it as close as possible to the
vehicle, and mount all Tags on the
side of the windscreen closest to
the Base Station. The closer the
Tags are to the Base Station, the
lower the range setting can be,
and the lower the chance of
accidentally waking the wrong Tag.
NOTE: Please read Section 4,
especially 4.1.3 and 4.1.4 for more
information on possible problems
and their solutions.
The Base Station doesn’t read the
Tag, or does so erratically.
The Base Station range is set too
low or multiple Base Stations are
not synchronised.
a) The Base Station may need to
have the range increased
slightly. Do so using the
adjustment trimmers. It may
also be that it needs to be re-
oriented to face the Tags
directly. Ensure that the unit is
facing towards the correct area
of detection. This is especially
important if a triggering device
is to be used. For example, in
the case of a loop detector the
unit must face an area directly
above the loop.