User's Manual

TROUBLE-SHOOTING
26 SpotCell® 100 Series
5. Status: The DU and CU are installed properly, but your cell phone only works in
close proximity to the CU.
Action: There are three factors that may be affecting coverage as described below:
 Visually inspect the area around the CU. Ensure that there are not any large
metallic objects directly between the CU and the area where cell phone coverage
is not adequate. Remount the CU so that it is out in the open.
 If the signal the DU is receiving is very weak (although still strong enough to allow
operation), the area around the CU within which a cell phone can function will be
relatively small. An effort can be made to improve system performance by raising
or otherwise repositioning the DU in an effort to obtain a stronger signal. In Install
mode, signal strength is shown on the CU display.
 check with your vendor that your SpotCell product is compatible with your cell
phone service.
6. Status: The coverage area around the CU suddenly shrinks after a long period of
reliable operation.
Action: This is most likely due to man made environmental influences such as a
large building being erected somewhere in between the DU and the location the DU
is receiving a signal from. Repeating the install procedure with the DU in its current
position may improve system performance (i.e. Putting the CU switch into ‘Install’
and spinning the DU around twice, aligning it in the direction indicated by the green
LED on the second spin.). If this does not help, the DU may have to be physically
repositioned at a different location; going through the install procedure starting at
xxxx is necessary at this point.
7. Information: Remote installation SpotCell characteristics.
In order for the SpotCell system to function, there are two basic parameters that
must be met. The DU must receive a minimum amount of wireless signal, and a
physical environment that blocks wireless signals must be in between the DU and
CU (i.e. a wall).
If the DU is not receiving an adequate signal, the system will not work, or, it will work
but provide a very limited area around the CU in which a cell phone will function. In
this instance, it may be possible that only one cell phone will be capable of using the
system at a time. This is typical of applications that are on the fringe, or outside of a
wireless providers advertised coverage area. Improved performance will typically
only be attained by moving the DU to a higher location.