Manual

4 – Routing & assignment : Monitoring
68 TASCAM DM-4800 User’s Manual
Talkback, etc.
The internal talkback microphone is located above
the meters. The sensitivity of the microphone is
adjusted using the
T/B control next to the
microphone.
The
TO SLATE and TO STUDIO keys are both “smart
keys”. When active, they route the talkback micro-
phone to the busses and/or aux sends as selected
below, and to the studio respectively, and dim the
control room outputs.
The
MONO key (also a “smart key”) provides mono
control room monitoring, combining the left and
right signals into one mono signal.
Talkback source However, note that the internal
talkback microphone does not have to be used as the
talkback source. Any one of the mic/line sources can
be selected as a communication source (for example,
a boundary field microphone situated in a large con-
trol room can allow comments from a production
group to be routed to the artistes in the studio).
Select the talkback source (
T/B SOURCE ) in the
MONITOR OSC/COM screen:
Use the cursor to navigate to this field, the wheel to
make the selection between
INT T/B MIC (internal
microphone) and
MIC/LINE 1 through 24 . Press ENTER
to confirm the setting.
Slate definition The COMMUNICATION fields allow
you to choose the busses and aux sends which will
act as the “slate” when the
TO SLATE key is enabled
for sending talkback. Any combination of busses,
aux sends and the stereo buss can be selected (cursor
keys and
ENTER key) as slate destination. Linking of
busses and aux sends has no effect on this screen.
Oscillator and noise generator
In order to help with signal tracing, the setting of
SPLs, etc., the DM-4800 provides an internal tone/
noise generator.
The POD 1 switch turns the generator on and off.
Use POD 2 to set the type of generator: either a sine-
wave oscillator (
SINE ), a white noise generator
(
WHITE ), or a pink noise generator ( PINK ).
POD 3 sets the frequency if the sine wave oscillator
has been selected. There are four choices:
100Hz ,
440Hz (standard tuning A), 1kHz and 10kHz .
POD 4 sets the level from –36dBFS to 0dBFS in 0.5dB
steps. Remember that –16dBFS is the nominal level,
so you can use this setting when setting up SPLs, etc.
for your monitoring system.
Oscillator destination Use the OSCILLATOR fields
(cursor keys and
ENTER key) to route the generator
fields to any combination of busses, aux sends or the
stereo buss. This is an extremely useful “patch-free”
method of signal tracing.
Figure 4.9: Monitor oscillator and communication
screen