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HD information
Introduction
This section contains information and technical tips for using
High Definition (HD) compatible satellite and television receivers
with US versions of the Raymarine 37STV Satellite TV System.
Satellite switching
The satellite receiver has the ability to switch satellites
automatically using a DiSEqC signal. As you change channels
on the television, the receiver will send a DiSEqC signal when
another satellite is required.
The receiver is able to switch between SAT A and SAT A* or
SAT B and SAT B*, but you cannot automatically change from
the Satellite A pair to the Satellite B Pair.
Foe example, if you are watching a channel on SAT A (DTV101)
and decide to change the channel, the new channel may be on a
different satellite. If the channel is on a different satellite, the
receiver will send the DiSEqC signal and tell the antenna to
switch to SAT A* (DTV119).
If an HD channel on DTV110# is requested, you will have to
manually press the SAT B soft key on the ACU. This will change
the satellite pair to SAT B and SAT B*. As you change channels
now you have the option to switch automatically between
DTV101 and DTV110#. To return to the Satellite A pair, simply
press the SAT A soft key on the ACU.
In an installation that uses a multi switch, “Multiple IRDs -
DirecTV” on page 16, a DiSEqC supplier is required if three
DirecTV satellites are used. This additional accessory is
required because the multi switch does not allow the DiSEqC
signal to pass properly. Since the original signal cannot pass,
there is no satellite switching. In this case you could only track
two satellites - SAT A and SAT B - and it would require a manual
soft key press on the ACU to switch satellites. Since some
systems use three satellites, the DiSEqC supplier is required.
Technical tips
1. Only the Master receiver has the ability to change the satel-
lites automatically - this receiver should be HD compatible.
The Master receiver can change satellites between DTV101,
DTV119 and DTV110#. Any other receivers in the system do
not have the ability to change the satellite being tracked, only
watch the channels on the current satellite, i.e. if the Master
receiver is tracking DTV101, then all the remaining receivers
in the system can only watch channels on DTV101.
2. During the set up of your HD receiver, you should select the
option that states “Oval Dish with 3 LNBs”. This will tell the
receiver that it will have to be able to look for three satellites.
3. During set up, the receiver will look for each of the three
DirecTV satellites. Since the ACU is set up with two satellite
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