Raymarine 37STV User Manual page 19

81304_1.book Page 15 Tuesday, July 31, 2007 2:44 PM
To connect twin IRDs (Non HD):
1. Connect the system as for a single IRD as described in "Sin-
gle IRD" on page 14.
2. Remove the protective cover from the RF2 connector on the
antenna base plate.
3. Connect an RF cable to the RF2 connector on the antenna
base plate.
4. Connect the other end of the RF cable to 'LNB', 'ANT' or
'Satellite In' on the rear panel of the second IRD.
Full details on configuring your system IRDs will be found in the
relevant Manufacturer's handbook.
Twin IRDs (DirecTV HD version)
In this example you can connect two IRDs to your system, one
that is HD compatible and one that is non-HD compatible.
RF1 RF2
To connect twin IRDs (DirecTV HD version):
1. Connect an RF cable from 'RF1' on the antenna base plate to
'ANT RF1' on the ACU.
2. Connect an RF cable from 'RECEIVER' on the ACU to the
HD compatible IRD.
3. Connect an RF cable from 'RF2' on the antenna base plate to
the non-HD compatible IRD.
The ACU now makes the HD adjustment for the HD IRD.
Because the other IRD is not connected to the ACU, it
cannot receive an HD signal from DTV110 West.
Multiple IRDs
In order to connect three or four IRDs to the antenna, you will
need to purchase an active multiswitch with two satellite 'in'
ports (Raymarine recommends the Channel Master 6314 IFD),
and the necessary additional RF cables.
The multiswitch has to be installed between the antenna unit
and the IRDs as shown in the following diagram.
IRD 2 (Non HD) (not supplied)
When you use a multiswitch, the signal from the satellite
receiver can no longer tell the antenna when to automatically
change satellites. In order to change the satellite being tracked,
you must use the ACU. For example, in some areas DirecTV
programming is found on DTV101 and DTV119 (local channels).
When tracking DTV101, all of the receivers can receive
IRD 1 (HD) (not supplied)
programmes from that satellite. If you want to see programmes
on DTV119, you need to manually change the satellite being
tracked by pressing Satellite B on the ACU. This means that all
the receivers can then watch the programmes available on
DTV119.
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