TCG 01 User Manual
9
th
Edition: February 2007
Page 29 of 49
B.3
Installation
The impulse suppressor should be installed as per the instructions provided with the
impulse suppressor.
For the lightning protector to be effective, it must be firmly mounted to a conductive
metal surface that is itself bonded to the building protective earth. P
Please ensure that a
good electrical connection is made between the surge protector and the earthing
system.
All earthing connections should be as short as possible, should have no sharp bends or
loops and should not be coiled to take up extra cable.
The preferred mounting position is on the inside of the building’s exterior wall, adjacent
to the antenna lead entry point.
The absolute minimum bend radius for the antenna cable supplied is 40mm, but
it is preferable to use a larger bending radius if possible. One way of achieving
this is by positioning the protector so that the incoming antenna lead comes
through the wall about 150mm away from the protector’s connector. This
provides some space to ease the incoming cable into a gentle arc back on to the
connector.
The antenna cable must be cleanly cut at the appropriate point and the resulting two
ends terminated with the N-type connectors provided. The connectors are then attached
to the protector assembly and tightened firmly by hand. Seal each of the connections by
stretch-wrapping them with the self-amalgamating tape supplied in the kit. The seal
provides protection against moisture ingress, and prevents the connections from
loosening over time.
Care must be taken to mount the N-type connectors to the coax cable correctly
according to Figure 16 (T00100B3300). As the GPS antenna operates at a frequency in
excess of 1.5GHz, it is
essential
that the cable be prepared
exactly
as per the drawing
(U
Use Option 2 measurements shown – all measurements in millimetres). A crimp tool is
included in the kit – use the 0.68” die for the centre pin and the 0.256” die for the
external hex housing.
