Norsat O3b 10W BUC - Manual (Page 12)

© 2013 Norsat International Inc. Page 12 of 26
The BUC has body and cover heat sinks with fins for air cooling. Therefore, to achieve an optimal
function of the BUC, it should be mounted upside down so that fins of the body heat sink are open
to fresh air as shown in Fig. 7. Ensure that there are no objects that obstruct a flow of fresh air into
the fins of the body heat sink.
Figure 7. Mounting position of Ka band 10W BUC
CABLE INSTALLATION 4.3
The connections of 7010STC-O3b must be done using a waveguide (output) and coaxial cables
(input). The length of cables must be adjusted depending on the installation. An inappropriate
choice of the interface waveguide or cable may result in either a reduction of output power at the
external unit or an excessive distortion of the signal.
Some guidelines to install the interface cables between the internal units (Power supply and Modem)
and the external unit (BUC) are as follows:
a) Make a plan with the minimal route to be followed by the cables. It is recommended that 2m
of additional cable is added for ease of maintenance.
b) Secure the cables at each end of the connection.
c) Ensure that the external connectors are waterproof as well as resistant to other agents.
WATERTIGHT SEALING UP OF CABLES AND CONNECTORS 4.4
The application of moisture-resistant tape over the connectors is always recommended in outdoor
installations to ensure an appropriate waterproofing. The application procedure of this tape is the
following:
a) Ensure that all the connectors are correctly tightened. Cut a piece of moisture-resistant tape
with the desired size and remove the protector plastic of the tape.
b) Centre an end of the tape over the connector you want to protect and wrap tape tightly and
evenly over entire connector.