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4. Then press the ÔÕÕ or Ô®Õ key several times to scroll through the available services.
5. Press <ENTER> to set the Port to the currently displayed service.
The audio settings discussed above are contained in an Audio Configurations Table, which is
factory set in an EEPROM. These labels are a local ÒshortcutÓ to allow quick selection of audio
programs. When selected, these labels configure the unit for a particular service, routing, and
attenuation level. The Audio Configurations Table may be set or changed using a terminal and
the Terminal Commands. See
Commands.
3.4.1
Duplicating Audio Service
You may not set one service or audio-route to be received on multiple audio ports. Trying to do
this will result in the display of a Front Panel screen such as the one below.
s s s : S e r v I c
P o r
t X :
Where sss is the name of the audio service being duplicated, and x is the port that is currently
using the service.
mmmmmmmmmmmmm is a message prompting the user as to the action to take. This may be
ÒMove to PortYÓ where Y is the port the service was requested on (This will MOVE the service
to Port Y.). The other option is ÒCancelÓ which will cancel the previous command. The
Up/Down arrow keys will change the option; pressing <ENTER> will execute the currently
displayed option.
3.5
AUDIO HANDLING
The selected program (See Section 3.4) has a number of separate compressed-audio data streams
associated with it. These are assigned 3-letter mnemonic designations. Any of these may be
routed to either the Ch1 or Ch2 stereo outputs on the back of the IRD (but not both!). The
selected stream is a stereo or dual-mono signal. It may be routed to the L and R connections in a
specific relationship to the original audio connections at the uplink MPEG encoder unit:
Stereo
Reverse Stereo
1 on both*
2 on both*
UTY4000-011
APPENDIX A
e
U s e d
m m m m m m m m m m m m m
Table 15. Audio Handling
Original encoder L and R routed to corresponding L and R outputs on
IRD
Original encoder L routes to IRD R output, while original R routes to
the L output
Original encoder L is routed to both L and R outputs on IRD
Original encoder R is routed to both L and R outputs on IRD
(Page 50) for an explanation of Terminal
o n
Page 34 of 75
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