25-Seven PDM, Operator'S Manual

Page: 21 / 79

OPERATING MODES |
21
PDM
PDM Operator's Manual Version 2.4a • September 2019
Build with PreRoll
You may want to build your delay without changing speed or playing an insert file. PreRoll
Mode lets talent start their introduction before the scheduled program time. This is often
done by studios feeding a network, rather than a local transmitter.
n
Set
Build Mode
to
PreRoll
. Then, you can press BUILD and have talent start talking
earlier than the program is supposed to air. This early start, heard in the studio only,
should be the same number of seconds before airtime as you’ve chosen for
Delay
Size
.
For example, if you feed network at Noon and use a 10 second delay, you would back-time
and start the PreRoll ten seconds before noon. In other words, talent starts talking at
11:59:50; PDM then outputs the material starting at exactly 12:00:00.
n
The LCD will start to count up with numbers and a bar graph, like this:
PDM can hold multiple Build files. You can have different ones for different programs,
and select which one will get played from PDM’s front panel or a computer. See
page
20.
If the selected Build file is exactly as long as the selected
Delay Size
, PDM will
smoothly join delayed audio at normal speed when the file finishes playing.
•
If the file isn’t the same length as the
Delay Size
, PDM will still join delayed
audio when the file finishes. But it will subtly speed up or slow down the out-
put as needed, to achieve the preset Delay.
Build with PreRoll
You may want to build your delay without changing speed or playing an insert file. Pre-
Roll Mode lets talent start their introduction before the scheduled program time. This is
often done by studios feeding a network, rather than a local transmitter.
•
Set
Build Mode
to
PreRoll
. Then, you can press
BUILD
and have talent
start talking earlier than the program is supposed to air. This early start, heard
in the studio only, should be the same number of seconds before airtime as
you’ve chosen for
Delay Size
.
For example, if you feed network at Noon and use a 10 second delay, you would back-
time and start the PreRoll ten seconds before noon. In other words, talent starts talking
at 11:59:50; PDM then outputs the material starting at exactly 12:00:00.
•
The LCD will start to count up with numbers and a bar graph, like this:
Building Speed:10 “‘
Target Delay: 10.0 {}
Delay 3.4s Menu√
While PDM is counting, studio audio is sent to PDM’s delay memory, and its output is
muted.
While PDM is counting, studio audio is sent to PDM’s delay memory, and its output is muted.
When the full delay time is reached (and the solid bar fills the screen), PDM starts playing
delayed audio to the air chain. If you started the PreRoll at the right time, this should be
exactly the right time to start sending the program to the network.