Inovonics HD Radio SiteStreamer+ SOFIA 568, Инструкция по установке и эксплуатации

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(dBuV):
set points are programmed in much the same manner
as the audio-loss alarm example above.
RDS Alarm
There are two
Off
/
On
settings for RDS errors. Turning
RDS
Loss: On
delivers an alarm when the RDS subcarrier simply goes
missing. Setting
PI Error: On
gives an alarm when RDS is re-
ceived with a PI code mismatch.
RDS data transmitted with an analog-FM broadcast contains a PI
code unique to that station. A PI mismatch can signal a transla-
tor ‘hijacking’ by a radio hooligan, or the less sinister condition
of the expected signal going off-air and a distant on-channel
broadcast received in its place.
To enable the PI mismatch function, enter the station’s true PI
code in the
PI Code
: box. The code being received at the mo-
ment is shown as
Current
PI:
. Simply enter that
hex value as shown and
then click
Save
.
There are no threshold settings for RDS alarms, and both RDS
loss and PI mismatch share the same
Time On (Sec):
and
Time
Off (Sec):
settings, which work the same way as in alarms al-
ready discussed.
RT Update
All too frequently a station’s playout system will ‘stick’ in send-
ing RDS RadioText. RadioText is sent as a complete data mes-
sage, unlike the static or scrolling PS field that is transmitted as
a rapid succession of 8-character data blocks. This and other
complexities (the associated RT+ features, for example) make
the RadioText field more likely to cause problems than other
RDS functions when it misses an update.
By turning the
Alarm:
for this function
On
, and setting a
Time On
(Min):
at a nominal figure of 20 minutes or so, personnel will be
alerted to a ‘stuck’ RadioText field.
Pilot Loss
This alarm indicates the loss of the FM stereo pilot, which
could coincide with poor signal reception or a failure in the sta-
tion’s stereo generator. Although this is a rare transmitter
plant failure item, it might signal a more general problem with
the FM program when you are monitoring an HD Radio channel.
HD Loss
This function indicates loss of the HD Radio program that is
selected and being monitored at the moment, or of the HD1
program when listening to analog FM. Although this alarm may
seem somewhat redundant to loss of audio, for example, it may
prove useful in catching intermittent exciter or HD export-
er/importer issues. Other than what triggers it, this works just
like the pilot loss alarm.
HD PSD
This alarm issues an alert when the HD Radio Program Service
Data (PSD) is not updated in the expected timely manner.
Although there is a
Time On (Min):
setting common to all HD
programs, each HD program may be selected to alarm when the