GRASS VALLEY LDK 4000 ELITE -, User Manual

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32 LDK 8000 Elite/4000 Elite System camera User’s Guide (v1.01)
Chapter 3 - Configurations
3.2 TriaxHD configuration
TriaxHD, which is a further development of the Emmy Award winning Triax transmission
system, makes the camera compatible with industry standard Triax cables. This allows the
reuse of existing, reliable and valuable cable inventories.
A camera head with the LDK 5861 TriaxHD adaptor is connected to an LDK 4502 TriaxHD Base
Station using a Triax cable. The maximum length of cable that can be used without significant
degradation of the video signal is 1,200 m (4,000 ft) for a 14 mm (0.55 in) Triax cable.
TriaxHD allows video transmission and remote control of cameras up to a distance of
1,200 m (4,000 ft) and beyond, using industry standard 14 mm (0.55 in) Triax cables. It is
based on 30 MHz full-bandwidth 4:2:2 transmission (Y/Cr/Cb components).
The double side band modulation technique used in combination with Y/Cr/Cb
transmission ensures linearity, resolution and an optimal signal-to-noise ratio over the
maximum cable length. Bandwidth efficient channel combining and equalization
techniques minimize cross-talk and interference. Teleprompter and viewfinder signals
maintain high performance with relatively long cable lengths.
The communication facilities provide for two-wire or four-wire high quality intercom
signals. Full camera control is provided via a C2IP Ethernet-based control network.
The power supply is applied to the Base Station and via the Triax cable to the camera. An
OCP 400 operational control panel can be connected directly to the Base Station using a cross-
over Ethernet cable.
Figure 3-2. Camera in TriaxHD configuration
Triax cable lengths
The approximate maximum cable lengths between a Base Station and a camera are given in
the table below. The signal degrades gradually when these lengths are exceeded. Reduce
these lengths by approximately 20% when a teleprompter signal is sent to the camera.
The maximum length is given for cables of the highest quality. The quality of some cables and
the number of connections can adversely affect this maximum length.
HD-SDI out A
HD-SDI out B
Viewfinder out
HDMI out
Audio mic 1 in
Audio mic 2 in
Front mic in
Intercom headset i/o
Reference in
Teleprompter out
12 VDC in
Scriptlight out 12 VDC
Utility out 12 VDC 1.5A
Tracker out
Aux out
HD-SDI out 3x
CVBS viewing out
Text out
Tally signal
Private data
Intercom i/o
EXT SD video in
SD-RGB/YUV/SDI out
Audio 1 out
Audio 2 out
Monitoring out
LDK 8000 Elite
HD camera head LDK 5861 TriaxHD
camera adaptor
OCP 400 MCP 400
LDK 4502 TriaxHD
Base Station
C2IP Camera Control
Ethernet infrastructure
LDK 4800 TriaxHD
repeater