We, Grass Valley Nederland B.V., Kapittelweg 10, 4827 HG Breda, The
Netherlands, declare under our sole responsibility that this product is in
compliance with the following standards:
- EN60065 : Safety
- EN55103-1: EMC (Emission)
- EN55103-2: EMC (Immunity)
following the provisions of:
a. the Low Voltage directive 2006/95/EC
b. the EMC directive 2004/108/EC
This product generates, uses, and can radiate radio frequency energy and if not
installed and used in accordance with the instructions, may cause interference to
radio communications.
It has been tested and found to comply with the limits for a class A digital device
pursuant to part 15 of the FCC rules, which are designed to provide reasonable
protection against such interference when operated in a commercial environment.
Operation of this product in a residential area is likely to cause interference in
which case the user at his own expense will be required to take whatever
measures may be required to correct the interference.
Copyright
Trademarks
Website
Copyright Grass Valley Nederland B.V. 2008. Copying of this document and giving
it to others, and the use or communication of the contents thereof, are forbidden
without express authority. Offenders are liable to the payment of damages. All
rights are reserved in the event of the grant of a patent or the registration of a
utility model or design. Liable to technical alterations in the course of further
development.
Grass Valley and Infinity are trademarks of Grass Valley, Inc. All other tradenames
referenced are service marks, trademarks, or registered trademarks of their
respective companies.
Visit the Grass Valley public website to download the latest user’s guide updates
and additional information about your broadcast product:
LDK 4502/4503/4506 HDTV camera base station User’s Guide (v3.5)5
End-of-life product recycling
Grass Valley’s innovation and excellence in product design also extends to the programs we’ve
established to manage the recycling of our products. Grass Valley has developed a
comprehensive end-of-life product take back program for recycle or disposal of end-of-life
products. Our program meets the requirements of the European Union’s WEEE Directive and
in the United States from the Environmental Protection Agency, individual state or local
agencies.
Grass Valley’s end-of-life product take back program assures proper disposal by use of Best
Available Technology. This program accepts any Grass Valley branded equipment. Upon
request, a Certificate of Recycling or a Certificate of Destruction, depending on the ultimate
disposition of the product, can be sent to the requester.
Grass Valley will be responsible for all costs associated with recycling and disposal, including
freight, however you are responsible for the removal of the equipment from your facility and
packing the equipment ready for pickup.
For further information on the Grass Valley product take back system please contact Grass
Valley at + 800 80 80 20 20 or +33 1 48 25 20 20 from most other countries. In the US and
Canada please call 800-547-8949 or 530-478-4148. Ask to be connected to the EH&S
Department. In addition, information concerning the program can be found at:
www.thomsongrassvalley.com/environment
6LDK 4502/4503/4506 HDTV camera base station User’s Guide (v3.5)
Important information
Read these instructions carefully and retain them for future reference.
During installation and operation of this equipment, local building safety and fire protection
standards must be observed.
Before connecting the equipment to the power supply of the installation, verify the proper
functioning of the protective earth lead.
Whenever it is likely that safe operation is impaired, the apparatus must be made inoperative
and secured against any unintended operation. The appropriate servicing authority must then
be informed. For example, safety is likely to be impaired if the apparatus fails to perform the
intended function or shows visible damage.
Any changes or modifications not expressly approved in this manual could void your authority
to operate this equipment.
Cautions and Warnings
Read and comply with the warning and caution notices that appear in the manual.
–Warnings indicate danger that requires correct procedures or practices to prevent
death or injury to personnel.
–Cautions indicate procedures or practices that should be followed to prevent damage
or destruction to equipment or property.
LDK 4502/4503/4506 HDTV camera base station User’s Guide (v3.5)7
Warnings
To prevent fire or shock hazard, do not expose the unit to rain or moisture. If the unit is in a wet
or damp environment, a rain cover must be used to protect it for personal safety reasons
(EN60065). The rain cover supplied with the unit protects it according to safety specification
EN60529 up to level IPX2 (spraying water).
To avoid electrical shock, do not remove covers or panels. Refer servicing to qualified
personnel only.
In case of an emergency ensure that the power is disconnected.
Use only fuses of the type and rating specified.
Connect the product only to a power source with the specified voltage rating.
The Base Station must always be connected to protective earth. Do not interrupt the
protection conductor inside or outside the unit. Do not disconnect the protective earth
terminal. Intentional interruption is prohibited and is likely to make the unit dangerous.
To prevent risk of overheating, ventilate the units correctly.
For safety reasons the Base Station must be mounted in a 19-inch rack which has safety covers
according to IEC65. When two Base Stations are mounted above each other, the minimum
distance between them must be 50mm or the rack must be force-air cooled.
8LDK 4502/4503/4506 HDTV camera base station User’s Guide (v3.5)
Triax cable systems
Only connect a Triax cable from the same LDK camera family to the unit.
Do not allow system earth currents to exceed 1.5A in the outer shield of the Triax cable or 0.2A
in other cable shields.
To avoid excessive earth currents in a Triax system, galvanically separate the power earth
connection of equipment connected to the camera from the camera earth.
It is strictly prohibited to short circuit the inner and outer shields of a Triax cable used to
connect a camera to a base station.
Galvanic separation
Because of the nature of Triax systems, with long distances between camera and Base
Station, the risk of earth currents flowing is greater. These earth currents can result in damage
to the equipment.
For example, a monitor connected directly to the CVBS output of the camera is powered
locally. The earthing point of the monitor’s power supply can be at a different potential with
respect to the earthing point of the Base Station. If the power earth of the monitor is also the
video earth, then this earth potential is transferred to the camera via the shield of the BNC
connector. The difference in earth potential between the camera and the Base Station results
in an earth current in the Triax system.
To prevent earth currents from flowing in the Triax system, we recommend galvanic separation
of earthed equipment connected to the camera. This separation can be achieved by using an
isolation transformer between the local power outlet and the equipment connected to the
camera. Alternatively, use equipment that has a double insulation and therefore does not
require an earth connection.
LDK 4502/4503/4506 HDTV camera base station User’s Guide (v3.5)9
Fiber optic transmission units
The CLASS 1 LASER PRODUCT label is located on top of the fiber optic connector on the rear
panel.
Laser safety statement (Europe)
fiber optic transmission units are classified as a "CLASS 1 Laser Product" according to EN
60825-1, Safety of Laser products. Class 1 laser products are considered safe and do not result
in biological hazard if used according to the instructions.
Laser safety statement (US)
fiber optic transmission units are classified as a "CLASS 1 Laser Product" according to 21CFR
1040.10 of the US Food and Drug Administration (FDA) Center for Devices and Radiological
Health.
CLASS 1
LASER PRODUCT
LASER KLASSE 1
PRODUKT
Use of controls, adjustments or performance of procedures other than those specified herein
may result in hazardous radiation exposure.
To ensure proper use of this product, please read this instruction manual carefully and retain
for future reference. Should the unit ever require maintenance, contact an authorized service
location.
fiber optic cable precautions
fiber optic cables and connectors are easily damaged; take the following percautions into
account:
–Do not bend the cable beyond the minimum permissible bend range specified for the
cable.
–Avoid kinks in the cable.
–Avoid subjecting the cable to a high tension force (even momentarily).
–Do not twist the cable when connecting it to equipment.
–Insert connectors straight and fully into their corresponding sockets.
–In fiber optic cable systems always put the dust caps on cable and panel connectors
immediately after disconnecting a cable. Keep the dust caps clean.
10LDK 4502/4503/4506 HDTV camera base station User’s Guide (v3.5)
Base Station earthing
The rear of the unit has two separate screw terminals for protective earth (PE) and video
earth (VE). These are normally connected by a metal strap.
The protective earth terminal is internally connected to the protective earth conductor of the
power cable. In normal circumstances the connection between the protective earth and the
video earth should not be broken. If required, the central earth connection wire of the studio
can be connected to terminal PE in accordance with VDE regulation 0800/part2.
Only if the studio (or OB van) is equipped with separate protective and video earth systems
may the metal strap be removed. Under these circumstances the video earth terminal must be
connected to the central functional earth potential (video earth) of the studio. This earth
potential should have functional protective and noiseless earth (FPE) qualities as stated in the
VDE regulation 0800/part2. A low impedance interconnection of both earth conductors must
be provided at the central studio earthing point.
VE
Metal strap
PE
LDK 4502/4503/4506 HDTV camera base station User’s Guide (v3.5)11
Precautions
To ensure continual high performance from the camera take the following precautions into
consideration:
•Avoid very damp places. If the environment is wet or damp a rain cover must be used to
•Do not subject the unit to severe shocks or vibration.
•Do not expose the camera to extremes of temperature.
•Do not leave the unit in direct sunlight or close to heating appliances for extended periods.
•Do not allow sunlight to shine into the viewfinder.
•Do not allow LASER beams to shine into the lens as this could damage the CCD sensors.
•Avoid extreme highlights as these can cause various kinds of optical reflections.
•Be careful when connecting and disconnecting Triax cables.
protect the unit.
–Do not mix Triax units from different types of camera systems (HD with SD, RGB Triax
with digital Triax).
–Make connections swiftly and firmly to avoid false error messages.
Mains lead wiring for UK users
The wires in the mains lead are coloured in accordance with the following code:
GREEN and YELLOW- EARTH
BLUE- NEUTRAL
BROWN- LIVE
As the colours of the wires in the mains lead of this apparatus may not correspond with the
coloured markings identifying the terminals in your plug proceed as follows:
•The wire coloured GREEN AND YELLOW must be connected to the terminal on the plug
marked with the letter E or by the safety earth symbol
AND YELLOW.
•The wire coloured BROWN must be connected to the terminal marked with the letter L or
coloured RED.
•The wire coloured BLUE must be connected to the terminal marked with the letter N or
coloured BLACK.
Ensure that your equipment is connected correctly - if you are in any doubt consult a qualified
electrician.
or coloured GREEN or GREEN
12LDK 4502/4503/4506 HDTV camera base station User’s Guide (v3.5)
Chapter 1
Introduction
1.1 Technology
The HDTV Camera Base Station is the perfect interface between your HDTV camera and the
rest of your system. The heavy-duty base station provides state-of-the-art technology in a
compact package. The high level of modularity guarantees ideal matching with any type of
application; you can use the system in a studio or for mobile field production, for HDTV or for
SDTV production. Optional modules can be inserted or removed at any time, making it possible
to change the configuration on a day-to-day basis.
The Base Station is only 2U high yet offers full broadcast functionality and quality.The low
height means that rack space is saved. Its low power consumption and efficient internal
cooling eliminate the need for space between adjacent units. Sliding rails are additionally
available for easy access to the back panel. The wings on either side of the back panel protect
all connectors from damage, including the Triax connector. The Triax connector itself can easily
be mounted at different angles to suit all mounting requirements.
Chapter 1 - Introduction
Operational controls
You can access the Base Station menu, which contains all operational settings, from an
Operational Control Panel. In addition to the operational menu, the installation and service
menus can be activated from the Base Station by pressing a switch behind the front panel. The
Base Station is compatible with all existing control system components.
1.1. 1 TriaxHD Features
The advanced TriaxHD transmission system, which is a further development of the Emmy
Award winning Triax transmission system, makes the base station and camera compatible with
industry standard Triax cables. This allows the reuse of existing, reliable and valuable cable
inventories. TriaxHD offers video transmission and remote control of cameras up to a distance
of 1,200 m (4,000 ft) and beyond, using standard 14 mm (0.55 in) Triax cables.
The TriaxHD system is based on 30MHz full-bandwidth 4:2:2 transmission (Y/Cr/Cb
components). The double sideband 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.
LDK 4502/4503/4506 HDTV camera base station User’s Guide (v3.5)13
Chapter 1 - Introduction
1.1.2 HD fiber features
The HD fiber system allows video transmission and remote control of cameras up to a distance
of 4,000 m (13,000 ft) and beyond, using industry standard fiber optic cable. It is based on
30MHz full-bandwidth 4:2:2 transmission (Y/Cr/Cb components).
The double sideband 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.
1.1.3 Modular construction
The modular concept makes it easy to expand the functionality by simply adding new modules.
Quick exchange of the modules for servicing or the ability to swap modules between Base
Stations is another benefit.
The external video input module provides two analog video inputs and loop-through analog
outputs. The signal can be PAL or NTSC, and does not need to be clamped. It can also be nonsynchronized. The external video input module can be replaced in future by a digital one.
HDTV and simultaneous high-end SDTV
Besides standard high-definition outputs, the Base Station can be optionally equipped with
simultaneous high-end SDTV outputs. This offers ultimate flexibility: produce in SDTV one day,
and in HDTV the next, or do both simultaneously. Having both SDTV and HDTV outputs
facilitates a gradual and managed transition from STDV to HDTV. Three 1.5 Gb/s HD-SDI
outputs are available on the Base Station. The high quality SDTV Module adds three 270 Mb/s
SDI and three analog outputs (these can be programmed to be either R, G, B, or Y, Pr, Pb or
three CVBS outputs).
Monitoring
Monitoring in the analog HD video domain requires the monitoring module. The outputs on this
module provide four switchable signals (R, G, B and Y), which are simultaneously available on a
WFM and PXM connector. The switching is done in the digital video domain and can be
controlled from an OCP or MCP. The PXM output can be used for analog picture monitoring,
and the WFM output for monitoring on a waveform monitor. An additional conventional VGA
connector, which is also provided by this module, contains R, G, B, H-sync, and V-sync signals
for relative low-cost analog HD monitoring using an appropriate computer monitor. For
monitoring in the SD video domain, one of the SDI outputs or analog outputs of the High
Quality SDTV module can be used.
Audio and intercom
The audio and advanced intercom module provides 4-channel intercom and 2-channel audio
from the camera. The high-quality audio from the camera head is passed to the different
outputs via balanced line drivers on the module for clean transparent sound. The gain levels
can be remotely controlled.
In the installation menu of the Base Station, a choice is provided between a 4-wire or a 2-wire
intercom system. An intercom channel can be assigned as a data channel for private data. A
1kHz test-tone generator and voicemail extend the functionality even further. The voicemail
stores messages from a combination of sources like Program, Production or Engineering for
the camera operator. By adding the engineering intercom module, a 5-channel full-featured
intercom is possible.
14LDK 4502/4503/4506 HDTV camera base station User’s Guide (v3.5)
The engineering intercom module provides a 2-channel intercom between camera operator
and engineering. The module fits into the front of the unit and facilitates the plugging in of a
headset and level adjustment for both ear muffs. It is ideal for a simple intercom facility in a
standalone mode of operation, or to expand the 4-channel advanced intercom to a 5-channel
intercom.
1.2 Features
•Low height: only 2U high, 19-inch rack unit.
•Flexible due to its modular construction.
•Teleprompter, color bar, digital HDTV outputs standard on board.
•The digital transmission backbone and power module meet the most demanding
broadcasting needs.
•Heavy-duty concept with low power consumption, ideal for Outside Broadcast (OB) vans.
•TriaxHD version (LDK 4502) and TriaxHDHS (LDK 4506) allow 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.
Chapter 1 - Introduction
•Fiber optic version (LDK 4503) allows video transmission and remote control of cameras
up to a distance of 4,000 m (13,000 ft) and beyond.
•Full camera control via the C2IP Ethernet-based network (compatible with legacy
Series
9000 camera control system).
•Two-wire or four-wire intercom compatible with international standards.
•HDTV and simultaneous high-quality SDTV outputs (optional).
•High-end simultaneous SDTV outputs (both digital as well as analog) for a gradual and
managed transition from SDTV to HDTV.
LDK 4502/4503/4506 HDTV camera base station User’s Guide (v3.5)15
Chapter 1 - Introduction
1.3 Packing/unpacking
Inspect the shipping container for evidence of damage immediately after receipt. If the
shipping container or cushioning material is damaged, it should be kept until the contents of
the shipment have been checked for completeness and the units have been checked
mechanically and electrically. The shipping container should be placed upright and opened from
the top. Remove the cushioning material and lift out the contents. The contents of the
shipment should be checked against the packing list. If the contents are incomplete, if there is
mechanical damage or defect, or if the units do not perform correctly when unpacked, notify
your sales or service centre within eight days. If the shipping container shows signs of damage
or stress, notify the carrier as well.
If a unit is being returned to for servicing, try to use the containers and materials of the original
packaging. Attach a tag indicating the type of service required, return address, model number,
full serial number and the return number which will be supplied by your service centre. If the
original packing can no longer be used, the following general instructions should be used for
repacking with commercially available materials:
1.Wrap unit in heavy paper or plastic.
2.Use strong shipping container.
3.Use a layer of shock-absorbing material around all sides of the unit to provide firm
cushioning and prevent movement inside container.
4.Seal shipping container securely.
5.Mark shipping container FRAGILE to ensure careful handling.
16LDK 4502/4503/4506 HDTV camera base station User’s Guide (v3.5)
Chapter 2
Installation
2.1 Configurations
Chapter 2 - Installation
2.1.1 Cameras and Base Stations with C2IP network
Triax systems
Each camera head with a Triax adapter is connected to a 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 Triax cable. The power supply is applied to the Base Station
and via the Triax cable to the camera.
Fiber systems
Each camera head with a fiber adapter is connected to a Base Station using a hybrid fiber optic
cable. The maximum length of cable that can be used without significant degradation of the
video signal is 4,000m (13,000 ft). The power supply is applied to the Base Station and via the
cable to the camera.
Ethernet
The Base Stations are each connected to a network hub or router via an Ethernet cable
(straight through, not cross-over). The OCP 400 operational control panels and, if required the
MCP 400 Master Control Panel, are also connected to the Ethernet network via a hub or
router.
Note
☞
An OCP 400 operational control panel can also be connected directly to the Base Station using
a cross-over Ethernet cable.
If required, a series 9000 OCP can be connected directly to a Base Station using a 2-wire bus
cable. In this situation no loop-through is available and the camera number must be set to 1.
LDK 4502/4503/4506 HDTV camera base station User’s Guide (v3.5)17
Chapter 2 - Installation
2.1.2 Camera with Triax adapter and SuperXpander
An LDK 8000 camera head can be mounted in the LDK 4488 SuperXpander (or in the
LDK 4489 Xpander). This enables large box lenses to be used with the camera. The LDK 4021
7-inch HDTV viewfinder can be mounted on the SuperXpander.
The camera with the TriaxHD adapter connects to the SuperXpander via a flying lead. The
power supply for the camera is supplied via this lead. The SuperXpander is connected to a
TriaxHD Base Station using a Triax cable. This configuration can be powered either:
– from the Base Station via the Triax cable, or
– locally with the mains power supply connected directly to the SuperXpander.
2.2 Control bus
The Base Station can be connected to either:
•an Ethernet control network (C2IP)
or
•a two-wire Series 9000 control bus (S9000).
One of these options can be selected in the SYSTEM/CONTROL MODE menu item. The Base
Station is delivered with the default value set to C2IP, so only the Ethernet control bus is active.
If you use control panels of the Series 9000 system, then you must change the value of the
System / Control Mode menu item to S9000 so that you can connect these panels to the 4-pin
Data connector at the rear of the unit.
(To loop-through Series 9000 control panels use the special connector cable provided.)
The IP address and other options for the Ethernet connection can be set up in the System
menu. These items can also be set up remotely using a network configuration tool such as
NetConfig.
Note
☞
Even if you have selected the C2IP control bus, then you can still connect a single OCP from
the Series 9000 system to the 4-pin Data connector at the rear of the unit. However, you may
not connect more than one device as this leads to unreliable operation.
2.3 Power supply
Caution
Connect the Base Station only to a power source with the specified voltage rating. Use only
fuses of the type and rating specified.
The Base Station must always be connected to protective earth. Do not interrupt the
protection conductor inside or outside the unit. Do not disconnect the protective earth
terminal. Intentional interruption is prohibited and is likely to make the unit dangerous.
18LDK 4502/4503/4506 HDTV camera base station User’s Guide (v3.5)
Chapter 2 - Installation
Before connecting your unit to the power supply check the fuse type (230 or 115) on the IEC
power connector at the rear of the Base Station.
If the fuse type shown corresponds to your power supply voltage, connect the power supply
for the Base Station to the IEC connector at the rear.
If the fuse type does not correspond to your power supply voltage you must change the fuses
before connecting the supply as follows:
1.Insert a small screwdriver into the slot above the pins of the IEC connector and unclip the
fuse holder unit.
2.Insert you finger under the indication unit and pull it out.
3.Rotate the indication unit 180° so that the correct indication for you voltage supply is
displayed at the back of the Base Station (230 or 115).
4.Slide the indication unit securely back into its slot.
5.Insert the appropriate fuses into the alternative fuse holder which is delivered separately
with the Base Station (4AT fuses into the 230 fuse holder; 10AT fuses into the 115 fuse
holder). The type of fuse holder is marked on the holder.
6.Slide the fuse holder securly back into the IEC connector until it clips into place.
7.Check again that you have used the correct fuses and that the corresponding indication is
shown.
8.Connect the power supply for the Base Station to the IEC connector at the rear.
Figure 2-1. Base Station fuses
Insert small
screwdriver here
to open clip
230
Fus e t ype
230
Indication unit
FunctionValu e
Mains input voltage230 Vac or 115 Vac
Fuses4AT (230 Vac) or 10AT (115 Vac)
Mains frequency47 to 63 Hz
Power consumption270 Watt (470 VA)
2.3.1 Base Station earthing
The rear of the unit has two separate screw terminals for protective earth (PE) and video
earth (VE). These are normally connected by a metal strap.
LDK 4502/4503/4506 HDTV camera base station User’s Guide (v3.5)19
Chapter 2 - Installation
Figure 2-2. Base Station earthing
The protective earth terminal is internally connected to the protective earth conductor of the
power cable. In normal circumstances the connection between the protective earth and the
video earth should not be broken. If required, the central earth connection wire of the studio
can be connected to terminal PE in accordance with VDE regulation 0800/part2.
Only if the studio (or OB van) is equipped with separate protective and video earth systems
may the metal strap be removed. Under these circumstances the video earth terminal must be
connected to the central functional earth potential (video earth) of the studio. This earth
potential should have functional protective and noiseless earth (FPE) qualities as stated in the
VDE regulation 0800/part2. A low impedance interconnection of both earth conductors must
be provided at the central studio earthing point.
VE
Metal strap
PE
2.4 Connecting the studio intercom system
Connect the studio intercom system to the rear of the Base Station. The wiring of the panel
connector is shown below for two-wire and four-wire systems.
20LDK 4502/4503/4506 HDTV camera base station User’s Guide (v3.5)
PROD out
+
FunctionValu e
2-wire
Signal level0 dBu
Load impedance200 Ω
DC level40 VDC (max.)
4-wire
Output signal level+6 dBu or 0 dBu selectable
Output impedance 50 Ω (max.), symmetrical
Input signal level+6 dBu or 0 dBu selectable
Impedance 9 KΩ (min.), symmetrical
2.5 Connecting the studio signalling
Connect the studio signalling system to the rear of the Base Station. The wiring of the panel
connector is shown.
Chapter 2 - Installation
Figure 2-5. Signalling connection
9
Call out
Call out ret.
On-air in
On-air ret.
Audio 1 level
Audio 2 level
Ground
15
2.5.1 Call, On-air and Iso signals
There are four connection methods for the Call, On-air and Iso (On-air yellow) signalling
functions:
1.Dry contact
2.Common ground
3.Voltage level Send lead
4.Open / voltage level Send lead
A selection in the SYSTEM/SIGNALLING menu allows you to make the state of the function
(on or off) correspond to a particular input signal. There are two leads for each connection Send and Return.
1
8
Preview out
Preview out ret.
ISO in
ISO in ret.
Call in
Call in ret.
+5 VDC
Housing
LDK 4502/4503/4506 HDTV camera base station User’s Guide (v3.5)21
Chapter 2 - Installation
Function Send pinReturn pin
Call210
Iso311
On-air412
The following tables show the selectable states for each of the four connection methods. The
states are Open/High (OH); High/Open (HO); Low/High (LH) or High/Low (HL).
Menu setting Input shortedInput open
LHFunction ONFunction OFF
HLFunction OFFFunction ON
* a common return (not ground!) can be used for the three functions.
Figure 2-6. Dry contact signalling
base station
signaling
External
signaling
dry contact
connector
Menu setting Input groundedInput open
LHFunction ONFunction OFF
HLFunction OFFFunction ON
* use either Send or Return only, do not mix.
Figure 2-7. Common ground signalling
Signal 1
Signal 2
base unit
signalling
connector
Signal n
Common
External On-Air
signaling with
common contact
22LDK 4502/4503/4506 HDTV camera base station User’s Guide (v3.5)
Chapter 2 - Installation
Menu setting Input 0 to 2.5VInput 4 to 24V
LHFunction ONFunction OFF
HLFunction OFFFunction ON
* isolated from ground.
Menu setting Input openInput 4 to 24V
OHFunction ONFunction OFF
HOFunction OFFFunction ON
* isolated from ground.
Figure 2-8. Voltage level signalling
+5 - 12 Vdc
+
External
signaling
with DC
output
voltage
base unit
signalling
connector
2.5.2 Audio level
Apply a DC voltage to pins 6 and 14 of the signalling connector to control the levels of audio
channels 1 and 2 respectively, as shown in the figure below.
Figure 2-9. Audio level control
Audio 1 level (pin 6)
Audio 2 level (pin 14)
-22 dBu
-28 dBu
-34 dBu
-40 dBu
-46 dBu
-52 dBu
-58 dBu
-64 dBu
+5 Vdc (pin 7)
1k
1k
1k
1k
1k
1k
1k
1k
GND (pin 15)
+4.3V
+3.7 V
+3.1 V
+2.5 V
+1.9 V
+1.3 V
+0.7 V
0 V
LDK 4502/4503/4506 HDTV camera base station User’s Guide (v3.5)23
Chapter 2 - Installation
2.6 Auxiliary connections
2.6.1 Private data
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 or pan and tilt data 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. If a channel is used for private data, then of course the original
functions are no longer available.
Figure 2-10. Private data on auxiliary connector
5
9
Private date in
6
1
Private data out
To select the function of the Base Station to camera channel set the Base Station menu item
AUDIO\INTERCOM\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\INTERCOM\PRIVATE DATA\TRACKER CHANNEL to PRIVATE.
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 µs and can be more than 30 µs depending on the type of Triax cable.
The duty cycle difference between input and output is max. 5%.