Technicolor - Thomson LDK 4502 - Manual (Page 29)

Installation User's Guide LDK 4502 - HDTV Camera Base Station 2-21
Private Data
HDTV
Camera Base Station
Private data channels can be used for the transmission of
serial data via the triax cable. For example, electronic
scriptboard or character data for a video display unit can be
transmitted to the camera.
The tracker microphone intercom channel is used for the
data channel from camera head to Base Station. The
program intercom channel is used for the data channel
from Base Station to camera head. The input and output
signals are available on the auxiliary connectors of the
camera and Base Station (for camera see the connectors
and cables section). If a channel is used for private data,
then of course the original functions are no longer available.
To select the function of the Base Station to camera
channel set the Base Station menu item
Audio/Intercom \
Private Data \ PROG Channel to Priva.
To select the function of the Camera to Base Station
channel set the Base Station menu item
Audio/Intercom \
Private Data \ Tracker Channel to Priva.
Remember that the propagation-delay times are different
for different triax cable lengths, especially if a return signal
is involved. At maximum lengths of 2400 metres the total
delay is at least 25 µsec. and can be more than 30 µsec,
depending on the type of triax cable.
Data signal specifications
Baudrate: 2400
Input level: TLL, possible RS232
Input impedance: 100Kohm
Output impedance: ~300 ohm
Max load: ~1Kohm
Triax Cable
Tracker Channel PROG Channel
Tracker Channel
PROG Channel
P&T
CTL
A pan and tilt unit as an example
connected to the Aux connector.
A Control is as an example
connected to the Aux
connector.
Clear ND1/4 ND1/16 ND1/64
Clear Star 4P Star 6P Soft Focus VTR
Save Ext.
Iris Std.
File
Smart
card
Pow er on
P w el Tracker Aux
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