Intellian i2 Installation And Operation Manual page 19

Twin IRDs Connection
You can connect two IRDs for your antenna as shown in the following
diagram. One of the IRD's need to be set up with the ACU in order to use
another IRD without connecting the ACU. Both IRD's with and without an
ACU connection can receive any channels that are available from the
tracked satellite.
As in the single IRD option, the RF cables from the antenna base plate
should be connected to 'LNB', 'ANT', or 'Satellite In' on the rear panel of
the IRD.
RF1 RF2
RF Cable
ACU
Antenna
ANT RF1 RECEIVER
FG - +
+ -
DC 9~30V FUSE NMEA PC INTERFACE
DC Power Cable NMEA GPS PC Cable
Figure 16 : Dual-IRDs Configuration
IRD2 (Not Supplied)
ACU IRD Cable
IRD1 (Not Supplied)
Receiver
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