BASIC OPERATION |
15
PDM
PDM Operator's Manual Version 2.4a • September 2019
To smoothly end a delayed segment…
…press the yellow
EXIT
button. PDM will stop storing new audio, and will send any existing
audio in its memory to the transmitter. Then it will send incoming audio directly to the
transmitter in real-time.
Depending on how your system is set up:
n
PDM will play any remaining audio using time compression, subtly speeding up
what’s in memory to rejoin real-time faster; or
n
PDM will play what’s in memory with no speed change
8
. Some operators call this
function roll out or wait and exit.
Whichever method you choose, PDM tells you where you are in the exit process. The LCD
will look like this:
To smoothly end a delayed segment…
…press the yellow
EXIT
button. PDM will stop storing new audio, and will send any ex-
isting audio in its memory to the transmitter. Then it will send incoming audio directly
to the transmitter in real-time.
Depending on how your system is set up:
•
PDM will play any remaining audio using time compression, subtly speeding
up what’s in memory to rejoin real-time faster; or
•
PDM will play what’s in memory with no speed change
1
. Some operators call
this function roll out or wait and exit.
Whichever method you choose, PDM tells you where you are in the exit process. The
LCD will look like this:
Exiting Speed:10“‘
Delay 3.4s Menu√
When
Delay
equals 0 seconds, PDM exits Delay mode, feeding the input signal to its
output.
Operating Modes
A visual note…
PDM is an advanced time-manipulation tool for radio broadcasters. But since we can’t
play audio in this manual, we’ll use graphics to explain how PDM operates.
These drawings might also help you visualize what PDM is doing when you press its
buttons. The top line (pink background) shows what’s happening in the studio: this is
what’s heard by the talent and producer. The bottom line (blue background) shows the
resulting audio that PDM sends to the transmitter or network feed. The white slash
through the blue line, beneath the
DUMP
button, shows where PDM has smoothly de-
leted material from the on-air program.
1
Even if you’ve set the system to exit by speeding up, you can access this no-speed-change mode at any time:
After you press
EXIT
, press and hold down
COUGH
, and then wait. Watch the LCD screen. When it gets close to
Delay 1.0s
, release
COUGH
and start talking again: PDM will smoothly transition to real-time mode.
When
Delay
equals 0 seconds, PDM exits Delay mode, feeding the input signal to its out-
put.
8 Even if you’ve set the system to exit by speeding up, you can access this
no-speed-change mode at any time:
After you press
EXIT
, press and hold down
COUGH
, and then wait. Watch the LCD screen. When it gets close
to
Delay 1.0s
, release
COUGH
and start talking again: PDM will smoothly transition to real-time mode.
Summary of Contents for PDM
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