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PDC is a signal system transmitted by TV broadcasters to control the start and stop time of each programme. This signal is used
by the TV---Video to control the start and stop times of programmed timer recordings. PDC is particularly useful when the
broadcaster changes the time for a programme from the published time; the TV---Video’s timer recording start and stop time will
be controlled by the broadcaster. Recording can also be interrrupted by the broadcaster (for a “news flash” for example) and
resumed when the programme restarts.
PDC mode will be automatically set to Off when timer programmes are entered using the manual entry method. You can still set
the PDC function to On, but you must ensure that the start time is set to exactly the same as the published start time. If the start
time is entered incorrectly, the recording will not start.
PDC recording will start a few seconds before the scheduled programme is transmitted and may stop before or after the end of
the programme, controlled by the broadcaster.
If PDC is set to On for a station which does not transmit PDC signals, the TV---Video will perform normal timer recording.
Where multiple timer programmes have been entered, while the TV---Video is in Timer Rec mode it will periodically check PDC
status for each programme, for changes to the start time. However, while timer recording is in progress, only the status of the
current timer programme can be checked.
If the actual broadcasting times of Timer recordings overlap (regardless of whether they are PDC controlled) the recording that
starts first has priority. Recording of the later programme will only start once the first recording has finished.
When the position of a broadcasting station has been changed in the Programme edit menu, the programmed recording may not
be performed correctly when PDC is On.
Scheduled transmission time
Programmed
Start time
19:00
Example: Programme transmission is delayed by 15 minutes from 20:00 to 20:15
20:00
21:00
22:00
19:30
20:30
21:30
22:30
Actual transmission time
PDCStart signal
PDCStop signal
Programmed
Stop time
Recording is controlled by PDCsignals,
correctly recording delayed transmission
RECORDING --- PROGRAMME DELIVERY
CONTROL (PDC)