v4.0
LDK 5481 + LDK 4700 User’s Guide | DigiLink system
1-6
1.5
Intercom
An intercom channel connects the base unit to the camera operator's headset. The operator's
intercom microphone signal is sent to the base unit. The headset can be connected to the 5
pin XLR headset connector at the back of the DigiLink adapter. For the connector and detailed
pin descriptions refer to chapter 2.7.7.
A conversation is started when the camera operator presses the
VTR Start button
at the front
of the camera or the
VTR button
on the lens. The function and behaviour of this button can be
defined in the
INSTALL
menu of the camera. Refer to the camera’s user’s guide.
The volume of the headset earmuffs can be adjusted by turning the audio volume knob at the
front (right side) of the camera.
Intercom configuration
The sidetone volume level (feedback signal from the microphone to the earmuffs) can be
adjusted withthe
INSTALL/INTERCOM/SIDETONE
function n the camera (available only when
a 4-wire connection is used).
Depending on the type of microphone the following items can be set in the
INSTALL/
INTERCOM
menu in the camera:
•
Microphone gain level (0 or +40 dB) with the
CAM.MIC_GAIN
function;
•
Microphone power can be switched on or off with the
CAM.MIC_POWER
function.
Both 2-wire and 4-wire intercom connections can be used. On the base unit, set the setup
switch S1 in the Off-position when a 4-wire connection is used and set it in the On-position
when a 2-wire connection is used. Refer to chapter 3.5.2 for the description of the setup
switch.
The following figure shows an overview of the routing of the intercom system. For the
connector and detailed pin descriptions refer to chapter 3.4.
Figure 1-8.
Schematic overview of the intercom routing
DigiLink adapter
DigiLink base unit
C
a
m SDI OUT
PROD ou
t (4-w
i
re)
PROD in/out
(2-w
i
re)
0 dBu
p
i
n 1,
9
return
PROD in
(4-w
i
re)
0 dBu
p
i
n 5, 13 return
SDI
EXT
TP
C
a
m V
i
deo
0 / 40 dB
f
ront volume
C
a
m SDI IN
S1 O
ff
= 4-w
i
re
S1 On = 2-w
i
re
2 w.
4 w.
EXT/TP v
i
deo
Out
0 dBu
Mic in
-24/-64 dBu
