25-Seven Systems program delay manager, Operator'S Manual

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22 25-Seven Program Delay Manager Version 2.3 Manual April 2013
If your facility uses the +4 dBu standard of modern broadcast equipment, our recom-
mended setting of +14dBu= 0dBFS provides 10 dB of headroom for protection while
still maintaining an 84 dB signal-to-noise ratio. With this setup, it’’s unlikely that PDM
will ever go into distortion or audible limiting.
If you’’re dealing with heavily-processed feeds you can use a lower setting; for seri-
ously dynamic performances it may need to be higher. PDM has 94 dB dynamic
range at all settings, within 2 dB of the theoretical limit for 16-bit sound.
Controls menu
}Dump Size
Delay Size
Max Delay
Build Speed More‘‘ ‘‘
Press
Î
to scroll to more Options
Max Speed More““ ““
Build Mode
Build File
Exit Mode More‘‘
‘‘
Press
¨
to scroll to previous Options
Dump Mode More““ ““
Overkill File
Controls menu options
Dump Size
Displays a screen of
Dump Seconds
, in .1 second incre-
ments. Use
¨
and
Î
to select how much programming PDM will delete when
you press the Dump button. Choose between 1.0 and 60.0 seconds.
You can tap the Dump button multiple times for particularly long deletions. You can
also tap it if you hear additional programming that needs to be dumped, even while
PDM is rebuilding its delay following a previous dump. Each tap will delete the number
of seconds set by
Dump Size
, up to the limit of how many seconds have been saved in
PDM’s delay memory. This delay amount is displayed on the bottom line of PDM’s
main screen.
Delay Size
Displays a screen where you can use
¨
and
Î
to select how
much delay PDM will store in memory, in .1 second increments. Choose be-
tween 1.0 seconds and the maximum set by the next menu item.
The
Delay
size can also be changed from outside the menu system, if in a Delay mode.
Use
Ò
or
‰‰
to change the
Delay
seconds when PDM is showing a normal Delay
screen (
Building
,
Exiting
, or
Full
).
Max Delay
Use
¨
and
Î
to set a limit up to 99 seconds for the Delay
Size function noted immediately above. This is to prevent operators from ac-
cidentally setting unrealistic delays.