KVH Industries KVHTRACVISION G4 Technical Manual page 40

Option 3 - Connecting Three or More IRDs
(North American Systems only)
To connect three or four IRDs to the TracVision antenna, you will
need to install an active multiswitch (Channel Master model
6214IFD or equivalent) between the antenna and the IRDs. Two
RF cables should already be connected to the connectors labeled
"RF1" and "RF2" on the base of the TracVision antenna.
Figure 2-18 shows a typical wiring arrangement for three or four
IRDs. Mount the multiswitch unit in accordance with the
manufacturer's instruction sheet.
DC Power
DC In
Out 1
IRD #1
1. Connect the RF cable labeled "RF1" to the
multiswitch input labeled "LNB RHCP +13V."
2. Connect the RF cable labeled "RF2" to the
multiswitch input labeled "LNB LHCP +18V."
3. Connect the multiswitch outputs to individual IRD
inputs. Use RG-6 cable with F-type connectors for
all RF connections. Terminate all unused output
connectors with 75 ohm DC blocks (Channel
Master #7184, Radio Shack #15-1259 or equivalent).
54-0147
TracVision Antenna Baseplate
RF1
RF2
RHCP VHF/UHF LHCP
+13v +18v
Multiswitch
Out 2 Out 3 Out 4
IRD #2 IRD #3
Due to the signal polarization in
European satellites, the use of a
multiswitch will result in a loss of
signal and less than optimal
operation with TracVision G4
systems used in Europe.
Figure 2-18
Single Multiswitch Installation
Power
(North American systems only)
Data
The use of an active multiswitch will
interfere with the 22 KHz tone sent
by DIRECTV DSS Plus
the antenna. As a result, the
IRD #4
antenna will not receive the signal
to change satellites when you
change channels using your
DIRECTV DSS Plus remote. You
will need to use the ADCU front
panel buttons to switch between
satellites.
Installation
™
IRDs to
27