IBUC Operation Manual
Terrasat Communications Inc.
Rev. A
4-12
Connect the coaxial cable between the LNB (RX L-band) and the Modem L-band RX
INPUT.
Connect the M&C cable between the IBUC J2 (M&C) and the appropriate M&C
computer or LAN connection.
Connect the DC cable between the outdoor PSUI J2 (DC Output), as appropriate, and
the IBUC J3 (DC Input).
Connect the AC cable between the PSUI J1 (AC Input) and the AC power source.
Configuration with IFU:
Connect the IFL coaxial cable between the IBUC J1 (TX L-band) and the IFU J2 (TX
OUT). Connect a coaxial cable between the IFU J1 (TX IN) and the Modem (TX L-band
OUT).
Connect the coaxial cable between the LNB (RX L-band) and the IFU J4 (RX IN).
Connect a coaxial cable between the IFU J5 (RX OUT) and the Modem L-band RX
INPUT.
Other connections:
Connect the M&C cable between the IBUC J2 (M&C) and the appropriate M&C
computer or LAN connection.
Connect the DC cable between the outdoor PSUI J2 (DC Output), as appropriate, and
the IBUC J3 (DC Input). Low power units can be supplied from the Modem or the IFU
through the coaxial cable to the IBUC.
Connect the AC cable between the PSUI J1 (AC Input) and the AC power source.
Water Resistant Wrap
The application of moisture resistant wrap (mastic tape) to all outdoor connectors is
recommended to prevent water entry and resultant water damage. Apply the mastic
tape as follows:
- Ensure that all connectors are tight.
- Pre-cut the mastic tape to the desired size.
- Center the tape on the connector to be sealed and wrap the tape tightly around the
connector. Squeeze the tape tightly and ensure that both ends of the tape have
formed around the connector and the cable.
- Apply the tape to all connectors that may be exposed to moisture.
Grounding
Antenna Recommendations
Most antenna masts are encapsulated in concrete. Typically, the mast pipe is
submerged in a 4 (1.22m) to 5 foot (1.53m) deep augured hole. This provides a good
Ufer ground. An Ufer ground, in this case, is defined such that concrete retains
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