THOMSON STUDIO CAMERA LDK 20(S) Technical Manual
LDK 20(S)LDK 20(S)
LDK 20(S)LDK 20(S)
LDK 20(S)
Studio Camera
Technical Manual
3922 496 48591 St.00
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© Thomson Multimedia Broadcast Solutions 2002
We, Thomson Broadcast Solutions 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
EN55103-1
EN55103-2
following the provisions of:
a. the Safety Directives 73/23//EEC and 93/68/EEC
b. the EMC Directives 89/336/EEC and 93/68/EEC
: Safety
: EMC (Emission)
: EMC (Immunity)
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 computing device pursuant to Subpart J of part 15
of 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.
02.34.5 Technical Manual LDK 20(S) - Studio Camera I
LDK 20(S)
Studio Camera
Technical Manual
Contents
About This Manual ................................................ II
Safety Instructions ........................................... 1-1
Safety Summary ................................................ 1-2
Cautions and Warnings ...................................... 1-2
Earthing ............................................................. 1-3
Installation ........................................................ 2-1
Packing/Unpacking ............................................ 2-2
Local / Remote Power Supply ............................ 2-2
Hardware Setup and Customization ................... 2-3
Test Sawtooth .................................................... 2-4
Lens matching ................................................... 2-4
Analogue Ch1-Ch2 ............................................. 2-5
External Aspect Ratio Switch............................. 2-5
Dipswitch Settings ............................................. 2-5
Viewfinder Cadre Indication ................................ 2-6
Audio / Intercom settings ................................... 2-7
Private Data ....................................................... 2-8
Connectors and Cables ...................................... 2-9
Specifications LDK20 ....................................... 2-14
Replacements ................................................... 3-1
Introduction ........................................................ 3-2
Printed circuit boards ......................................... 3-2
Front module ...................................................... 3-3
Filterwheel Cassette ........................................... 3-4
Power supply ..................................................... 3-4
Adjustments ..................................................... 4-1
Introduction ........................................................ 4-2
Test Equipment ................................................. 4-3
Set-up Instructions ............................................. 4-3
Video Processor 1 Board ................................... 4-5
Digital Video Processor .................................... 4-10
Digital Video Processor .................................... 4-11
Digital Video Processor Subboard ................... 4-12
Digital Video Processor Subboard ................... 4-13
Digital Video Processor .................................... 4-14
Digital Video Processor .................................... 4-15
Video Miscellaneous Board .............................. 4-17
Sync./Shading Board ....................................... 4-27
Video Miscellaneous Board .............................. 4-35
Encoder Board PAL ......................................... 4-37
Encoder Board NTSC ....................................... 4-43
Audio/Intercom LF Board ................................. 4-51
Audio/Intercom LF Board RTS MODE ............. 4-55
Pre-Processor Board ........................................ 4-57
Drawings ........................................................... 5-1
Block Diagram Power Signals ............................ 5-2
Block Diagram Video Signals .............................5-3
Block Diagram Transmission Signals ................. 5-4
Block Diagram Control Signals ........................... 5-5
II Technical Manual LDK 20(S) - Studio Camera 02.34.5
About This Manual
Service policy
The LDK 20(S) is a sophisticated camera containing
state-of-the-art electronic components which are
designed to provide long-life operation without the
need for maintenance. With this in mind, the service
policy of Thomson Multimedia Broadcast Solutions
endeavours to ensure that help will be quickly on hand
in the unlikely event of anything going wrong. The
guiding principles of the Thomson Multimedia Broadcast
Solutions first line maintenance philosophy are speed
and cost effectiveness. First line maintenance is
dedicated to keeping your camera operational, despite
a fault, by module replacement and the replacement of
minor mechanical parts by the user.
Purpose of this manual
The provision of correct information is the first step in
ensuring the operational integrity of the camera.
Information on the operation of the camera is to be
found in the User’s Guide.
This installation and first line maintenance manual is
an integral part of the service policy. It ensures that
you will be able to install and set-up your camera to
meet the requirements of your environment. This
information on the installation of the camera is contained
in Section 2 of the manual. The remaining sections of
the manual provide first line service information so that
suitably qualified service personnel can detect and
repair faults, normally by module replacement.
Because of the complexity of some of the components,
second line service can only be carried out at the
specially equipped service centres and information
concerning second line maintenance is not supplied
in this manual.
Intended audience
The manual is intended as a guide to those with a
working knowledge of camera systems and installation
techniques. The first line detection and repair of faults
requires a general knowledge of test and measurement
techniques.
Structure of this manual
The manual is divided into five sections:
Section 1: Safety Information.
Contains important safety information and should be
read before carrying out any work on the camera.
Section 2: Installation.
Gives instructions on the integration of the camera into
the operating environment and the customization of
certain hardware functions
Section 3: Replacements.
Gives information on the replacement of components
at first line level.
Section 4: Adjustments.
Contains the adjustment procedures to be followed to
obtain the best performance from the camera.
Section 5: Drawings.
Contains block diagrams of the camera.
Safety Instructions Technical Manual LDK 20(S) - Studio Camera 1-1
Section 1
Safety Instructions
This section outlines the precautions that must be taken into account when using the LDK 20(S)
Studio Camera.
Contents
Safety Summary ........................................................ 1-2
Cautions and Warnings ............................................. 1-2
Earthing ..................................................................... 1-3
1-2 Technical Manual LDK 20(S) - Studio Camera Safety Instructions
Safety Summary
This informaton is intended as a guide for trained and
qualified personnel who are aware of the dangers involved
in handling potentially hazardous electrical/electronic
equipment. It is not intended to contain a complete list of
all safety precautions which should be observed by
personnel in using this or other electronic equipment.
The installation, maintenance and service of this equipment
involves risks both to personnel and equipment and must
be performed only by qualified personnel exercising due
care.
Personnel engaged in the installation, operation,
maintenance or servicing of this equipment are urged to
become familiar with First Aid theory and practises.
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, the proper functioning of the protective
earth lead of the installation needs to be verified.
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.
This product has been designed and tested according to
EN60065.
Cautions and Warnings
When performing service, be sure to read and comply with
the warning and caution notices appearing in the manuals.
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.
WARNING
THE CURRENT AND VOLTAGES PRESENT IN THIS
EQUIPMENT ARE DANGEROUS. ALL PERSONNEL
MUST AT ALL TIMES FOLLOW THE SAFETY
REGULATIONS.
ALWAYS DISCONNECT POWER BEFORE REMOVING
COVERS OR PANELS.
ALWAYS DISCHARGE HIGH VOLTAGE POINTS
BEFORE SERVICING.
NEVER MAKE INTERNAL ADJUSTMENTS, PERFORM
MAINTENANCE OR SERVICE WHEN ALONE OR WHEN
FATIGUED.
IN CASE OF AN EMERGENCY ENSURE THAT THE
POWER IS DISCONNECTED.
ANY INTERRUPTION OF THE PROTECTION
CONDUCTOR INSIDE OR OUTSIDE THE APPARATUS,
OR DISCONNECTION OF THE PROTECTIVE EARTH
TERMINAL, IS LIKELY TO MAKE THE APPARATUS
DANGEROUS. INTENTIONAL INTERRUPTION IS
PROHIBITED.
FOR SAFETY REASONS THE CPU MUST BE MOUNTED
IN A 19-inch RACK WHICH HAS SAFETY COVERS
ACCORDING TO IEC65.
WHEN TWO CPUs ARE MOUNTED ABOVE EACH
OTHER THE MINIMUM DISTANCE BETWEEN THEM
MUST BE 50MM OR THE RACK MUST BE FORCE-AIR
COOLED.
USE ONLY FUSES OF THE TYPE AND RATING
SPECIFIED.
CAUTION
To prevent risk of overheating, ventilate the product
correctly.
Connect the product only to a power source with the
specified voltage rating.
Only connect a Triax cable from the LDK 6 camera
family to an LDK 6 CPU. Never connect it to any other
base station.
Never connect the Triax cable from a camera to a
CPU of a different family; never connect the LDK
family to the TTV family.
Do not allow system ground currents to exceed 1.5A
in the outer shield of the triax cable or 0.2A in other
cable shields.
It is strickly prohibited to short circuit the inner and
outer shields of a triax cable used to connect a
camera to a base station.
Safety Instructions Technical Manual LDK 20(S) - Studio Camera 1-3
Symbol Colour Explanation
Red High voltage terminal at which a
voltage, with respect to an other
terminal, exists or may be
adjusted to 1000V or more.
Yellow/Black Live part.
Yellow/Black This marking indicates that the
operator must refer to an
explanation in the Instruction
Manual, or that a specific
component must be replaced by
the component specified in the
documentation for safety
reasons.
White/Black Protective earth (ground)
terminal.
Cathode ray tubes
Components marked
on the circuit diagram are critical
for safety and include those specified to comply with X-ray
emission standards for units using cathode ray tubes and
those specified for compliance with various regulations
regarding spurious radiation emission.
When servicing units that use cathode ray tubes (CRTs),
the cathode ray tubes themselves, the high voltage circuits
and related circuits are specifically chosen so that they
comply with recognized codes pertaining to X-ray emission.
Consequently, when servicing, replace the cathode ray
tubes and other parts with specified parts only. Do not
attempt to modify these circuits as any unauthorized
modification can increase the high voltage value and
cause X-ray emission from the cathode ray tube.
Handle the cathode ray tube only when wearing shatterproof
goggles and after discharging the high voltage completely.
Earthing
The rear of a CPU 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. If required,
the central earth connection wire of the studio can be
connected to terminal PE.
In normal circumstances the connection between the
protective earth and the video earth should not be broken.
The metal strap may be removed only if the studio (or OB
van) is equipped with separate protective and video earth
systems. 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.
WARNING
THE UNIT MUST ALWAYS BE CONNECTED TO
PROTECTIVE EARTH.
VE
PE
Metal
strap
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
or coloured
GREEN or GREEN 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.
1-4 Technical Manual LDK 20(S) - Studio Camera Safety Instructions
Installation Technical Manual LDK 20(S) - Studio Camera 2-1
Section 2
Installation
This section provides information which is relevant when the camera is to be used for the first time.
Packing and unpacking instructions together with information on the integration of the camera into
your studio system are provided. The procedures for the customization of certain hardware functions
and connector information is also provided.
Contents
Packing/Unpacking ............................................ 2-2
Local / Remote Power Supply ............................ 2-2
Hardware Setup and Customization ................... 2-3
Test Sawtooth .................................................... 2-4
Lens matching ................................................... 2-4
Analogue Ch1-Ch2 ............................................. 2-5
External Aspect Ratio Switch............................. 2-5
Dipswitch Settings ............................................. 2-5
Viewfinder Cadre Indication ................................ 2-6
Audio / Intercom settings ................................... 2-7
Private Data ....................................................... 2-8
Connectors and Cables ...................................... 2-9
Specifications LDK20 ....................................... 2-14
2-2 Technical Manual LDK 20(S) - Studio Camera Installation
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
Thomson Multimedia Broadcast Solutions 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 Thomson Multimedia
Broadcast Solutions 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
Thomson Multimedia Broadcast Solutions service
centre.
If the original packing can no longer be used, the
following general instructions should be used for
repacking with commercially available materials:
a. Wrap unit in heavy paper or plastic.
b. Use strong shipping container.
c. Use a layer of shock-absorbing material around all
sides of the unit to provide firm cushioning and
prevent movement inside container.
d. Seal shipping container securely.
e. Mark shipping container FRAGILE to ensure careful
handling.
Local / Remote Power Supply
The LDK 20 camera is delivered ready to operate in the
remote mode. If the camera has to be used in the local
(stand-alone) mode, carry out the following instructions
to allow the power to be supplied via the mains power
supply input connector on the right side connector
panel:
a. Disconnect the mains power supply or the triax
cable, whichever is connected.
b. Loosen two screws and remove the rear connector
panel of the camera.
c. Locate the remote/local switch - a large black
plastic box.
d. Set the switch to the local position. The camera is
delivered with the switch in the remote position.
f. Return the rear connector panel to its position.
R
E
M
O
T
E
230V 115V
Local/remote
Switch
Installation Technical Manual LDK 20(S) - Studio Camera 2-3
The camera is delivered in a ready-to-use state,
however, there are occasions when it might be
necessary to re-adjust some functions after, for
example, fitting a new lens.
A large number of functions can be set-up using the
control facilities of the menu system. In addition to this
software set-up there are some functions which can be
selected or adjusted internally in the camera.
Refer to the next chapters for instructions.
Location of adjustments
Turn the two screws on the left side panel 90°
counterclockwise and swing down the cover. Turn the
two screws on the right side panel 90° counterclockwise
and swing down the cover.
Hardware Setup and Customization
Unless mentioned otherwise the adjustments for
hardware setup and customization are located at the
side of the following modules:
1
Front Module
2
Video Processor 1
3
Digital Video Processing
4
Subboard DSP
5
Sync. Shading
6 Data Processor
7
Power
8
Video Miscellaneous
9
Encoder
10
Video Mux Ext-TP Rec
11
Audio/Intercom TX-Rec
12
RTS Power Miscellaneous
7
6
5
3
2
1
4
12
8
10
11
9
2-4 Technical Manual LDK 20(S) - Studio Camera Installation
Lens matching
When a camera is supplied with a lens it is not
necessary to perform any of the following adjustments
as the lens is already matched to the camera. However,
if you wish to change to a different type of lens or the
lens is not supplied with your camera, back focus,
white shading and auto iris adjustment procedures
may have to be performed.
• Colour balance.
If required, perform the gain adjustment of the
preprocessor board and/or white shading adjustment
procedures, described in section 4.
• Auto Iris Adjustment
If a different lens either works too slow or overshoots
too much with the auto iris control, adjust the
potentiometer on the lens to obtain acceptable
operation. Refer to the lens documentation.
• Back Focus Adjustment
To adjust the back focus of the lens refer to the
documentation of the lens.
Test Sawtooth
A test sawtooth signal is normally only used for
adjustment procedures. Jumper X3 on Video processor
1 board provides a choice between two internal signals
or an external signal.
Internal signals
Set jumper X3 to position BC to get the nominal
sawtooth. This is used for checking amplitudes.
Set jumper X3 to position AB to get a small sawtooth
(approximately 25% nom.). This small sawtooth is
used for checking painting or colour temperature
ranges.
External signal
To inject an external test signal first set jumper X3 to
position CD (test input). Connect the external test
signal to connector X4-1/2. The nominal value of this
signal is 700 mV without sync.
The test sawtooth signal is switched on by means of
the Operate menu of the camera or the Setup 1 menu
of the MCP.
X
5
5
X
5
6
TOP SIDE
A1
1
2
X4
A
TEST IN
Video processor 1
B
C
X3
Installation Technical Manual LDK 20(S) - Studio Camera 2-5
Analogue Ch1-Ch2
Two analogue channels (AN 0 and AN 1) are available
from the base station to the camera via the triax cable
and can be used to transmit L.F. signals. For example,
joystick control or pan and tilt. The input signals are
applied to the Auxiliary connector of the base station.
The output signals are available on the Auxiliary
connector of the camera. The input signal and output
signal voltage is between 0 and 5Vdc.
The AN 1 channel is sometimes used for switching the
aspect ratio. This is selected by means of the software.
See next chapter for instructions.
External Aspect Ratio Switch
The analogue channel 1 (AN 1) input on the base
station can be used to switch the aspect ratio. This
allows multiple camera switching.
This function can be selected in the menu system of
the camera or MCP. To select this function on the
camera, set the Aspect ratio of the Operate/Sensor/
AspRatio menu to External.
Apply a voltage at TTL level to the Auxiliary base
station connector. See Installation Manual Base
Station.
Input high: aspect ratio 4:3
Input low: aspect ratio 16:9
X4
TEST IN
2
1
B
A
C
X56
X55
TOP SIDE
Video processor 1
Dipswitch Settings
On the Digital Video Processor 3922 406 84951 the
following functions can be selected with dipswitches
ZS110 and ZS111:
ZS110-1 Leaking Pixel Corrector
ZS110-2 Noise Reducer
ZS110-3 HW Gamma Low Pass Filter
ZS110-4 Contour Boost (Viewfinder)
ZS111-1 Status Bar (only LDK20P) Focus
value remains present.
2-6 Technical Manual LDK 20(S) - Studio Camera Installation
Viewfinder Cadre Indication
Cadre On/Off
Switch S6 on the Sync./shading board allows the
cadre in the viewfinder to be switched on permanently
or to be controlled by the menu system. Position AB
selects (remote-) menu control (factory setting);
position AC switches the cadre on permanently.
If S6 is in the remote position then you can select in
Menu VF/Lens Cadre On or Off. The cadre is switched
to the 4:3 format or to the 16:9 format depending on the
position of the aspect ratio switch.
Cadre appearance
Switch S7 on the Sync./shading board allows the
cadre in the viewfinder to take the form of two dotted
lines or two low-contrast areas outside the picture
area. Position AB selects the dotted lines; position AC
selects the low-contrast areas.
The contrast of the cadre strips is adjusted with
potentiometer ZR247 on the Video/Miscellaneous
board.
16:9
dotted
lines
low-contrast area
low-contrast area
4:3
low-contrast areas
dotted lines
X
1
7
A
X
1
7
B
TOP SIDE
Video / Miscellaneous board
ZR247
Cadre
contrast
X
6
1
X
6
2
TOP SIDE Sync / Shading board
S7
C A B
S6
C
A
B
Installation Technical Manual LDK 20(S) - Studio Camera 2-7
Audio / Intercom settings
Audio microphone signals
The high-pass filters in the audio channels reduce the
background noise in the audio microphone signals.
The high-pass filters can be set as follows:
Audio 1 at MCP on/off (off=default setting)
Audio 2 at MCP on/off (off=default setting)
The phantom power for different types of microphones
can be set as follows:
Audio 1 S100: D1-E1/D2-E2 +12Vdc
B1-C1/B2-C2 Ground *
A1-B1/A2-B2 +48Vdc
Audio 2 S200: D1-E1/D2-E2 +12Vdc
B1-C1/B2-C2 Ground *
A1-B1/A2-B2 +48Vdc
(* factory setting)
Intercom headset signals
The signal to the headset of the tracker can be
selected by S420 on the Audio/Intercom LF board.
Position AB (the factory setting) selects the tracker
microphone sidetone signal; position AC selects the
ENG signal.
Intercom microphone signals
The gain of the cameraman microphone signal can be
set at Camera Menu as follows:
40db (default setting) 0db
The gain of the tracker microphone signal can be set
at Camera Menu as follows:
40db (default setting) 0db
The factory settings are for headsets with a dynamic
microphone.
The phantom power for both cameraman and tracker
microphones can be set with S300 as follows:
AC +12Vdc
AB Ground (factory setting)
B
A
C
X
1
9
A
X
1
9
B
TOP SIDE
Audio Intercom LF
S740
S470
S450
S200
S100
S300
B
A
C
B A C
B
A
C
S
9
8
1
B
A
C
S
9
8
0
S
9
6
1
S
9
6
0
signal choice
prog or private data
signal choice
head set or RTS
signal choice
sidetone or eng
signal choice
tracker mic or
private data
E
D
C
B
A
E
D
C
B
A
2-8 Technical Manual LDK 20(S) - Studio Camera Installation
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
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 use S801 on the Audio/intercom board. Position
AB selects the Progr function (factory setting); position
AC selects the private data function.
To select the function of the camera to base station
channel use S802 on the Audio/intercom board. Position
AB selects the tracker microphone function (factory
setting); position AC selects the private data function.
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
S802
C A B
S801
C A B
X
1
9
A
X
1
9
B
TOP SIDE
Audio Intercom LF
A1
Program
Private data
Tracker
Private data
S801
S802
Basestation
Installation Technical Manual LDK 20(S) - Studio Camera 2-9
23
18
12
7
1
6
11
17
22
24
A
B
Connectors and Cables
VTR connector
Triax connector
A. + Battery from VTR (10.7 to 17V)
B. Ground
1. CVBS (only available with encoder option present)
2. CVBS Return (only available with encoder option present)
3. Y + S Return
4. Y + S (luminance + sync.)
5. Pr: NTSC 700mV 75% saturated colour bar
Cr: PAL 525mV (EBU N10)
6. Pr/Cr Return
7. Pb: NTSC 700mV 75% saturated colour bar
Cb: PAL 525mV (EBU N10)
8. Pb/Cb Return
9. Not connected
10. Not connected
11. Not connected
12. VTR start/stop: +5V = recording; 0V = stop
13. Not connected
14. Not connected
15. Record/Tally
16. Not connected
17. Camera ground (shield)
18. Playback video input
19. Playback video return
20. Audio monitoring / VTR Save
21. Not connected
22. Not connected
23. Not connected
24. Not connected
26-pin male; panel view
part number 3922 040 02551
Fischer
1. Inner pin: Signals + power
2. Inner shield: Return
3. Outer shield: Camera housing
part number 2432 020 00009
Trilock
1. Inner pin: Signals + power
2. Inner shield: Return
3. Outer shield: Camera housing
part number 3922 040 02682
ARD
1. Inner pin: Signals + power
2. Inner shield: Return
3. Outer shield: Camera housing
part number 3922 040 01492
LEMO
1. Inner pin: Signals + power
2. Inner shield: Return
3. Outer shield: Camera housing
part number 3922 040 02541
3-pin; panel view
1
3
2
2-10 Technical Manual LDK 20(S) - Studio Camera Installation
15-pin female; panel view
part number 3922 406
Viewfinder connector
1. Video VF (Y + Sync)
2. (R-Y) Video
3. (B-Y) Video
4. Power return
5. Housing
6. +12 Vdc
7. SCL
8. INTN
9. Video VF return
10. (R-Y)/(B-Y) return
11. +12 Vdc
12. Power return
13. Housing
14. On air lamp
15. SDA
81
159
Installation Technical Manual LDK 20(S) - Studio Camera 2-11
Tuchel 6-pin female; panel view
part number 2422 026 02902
1. Microphone return
2. Microphone
3. Telephone return
4. Telephone left
5. Telephone right
• Microphone level -58dBm/-20dBm switchable
• Microphone impedance 200 ohm
• Telephone level +6dBm nominal
• Telephone output impedance <10 ohm
Camera headset connector
1. Telephone left
2. Not connected
3. Microphone
4. Microphone return
5. Telephone right
6. Telephone return
XLR 5-pin female; panel view
part number 2432 026 00176
XLR 3-pin female; panel view
part number 2422 026 02984
1. Audio Screen
2. Audio In
3. Audio Return
• Microphone impedance > 200 ohm
• Sensitivity remote controlled via base station:
range: -70 to -28 dBm
maximum input = -6 dBm
• Signal at pin 2 of audio input is in phase with
signal at pin 2 of audio output on Base Station
Audio microphone connectors
6
5
4
3
2
1
1
4
5
3
2
1
2
3
2-12 Technical Manual LDK 20(S) - Studio Camera Installation
1. +5VL
2. 0VL
3. AN0
4. AN1
5. Spare
6. Not connected
7. Private Data Camera - Base Station
8. Ground
9. Private Data Base Station - Camera
10. Ground
11. Shield
Fischer 11-pin female; panel view
part number 3922 040 02512
1. On-air signal return
2. Tracker microphone return
3. Tracker microphone input
4. Production tracker
5. Sidetone tracker
6. Return
7. Program tracker
8. Cameraman microphone
9. Tally control tracker
(Cmos level, R out = 1k)
10. +12V; I max. = 100mA
11. +12V return
• Microphone level -58dBu/-20dBu switchable
• Microphone impedance 200 ohm
• Telephone level + 6dBu
• Telephone output impedance <10 ohm
Fischer 11-pin female; panel view
part number 3922 040 02463
A. Data
B. Data not
C. Not Connected
D. Shield
Souriau 4-pin male; panel view
part number 2411 020 11367
Auxiliary connector
Tracker communication connector
Data connector
2
9
8
7
6
10
3
4
11
5
1
2
9
10
8
7
3
4
11
5
6
1
DA
CB
Installation Technical Manual LDK 20(S) - Studio Camera 2-13
Panel Connector Type Part number Cable part number
VTR 26-pin male 3922 040 02551 VTR cable LDL 2110/ *
Triax 3-pin Fischer female 2432 020 00009 LDK 8200/ **
Triax 3-pin Trilock 3922 040 02682 -Triax 3-pin ARD 3922 040 01492 -Triax 3-pin Lemo 3922 040 02541 -Viewfinder 15-pin Female 3922 406 -Headset 6-pin Tuchel female 2422 026 02902 -Headset 5-pin XLR female 2432 026 00176 -Audio Mic 3-pin XLR female 2422 026 02984 -Auxiliary 11-pin Fischer female (two slot) 3922 040 02512 2432 026 00254 male
Tracker 11-pin Fischer female (one slot) 3922 040 02463 2432 026 00252 male
Data 4-pin Souriau male 2411 020 11367 2411 020 12025 female
Script Light 3-pin Fischer female 3922 040 02881 2432 026 00253 male
Ext video/Tp 2-pin Coax female 2422 031 10529 --
* /02 is 2 m ** /00 for 8 mm cable
/05 is 5 m /10 for 11 mm cable
/10 is 10 m /20 for 14 mm cable
Script light connector
Fischer 3-pin female; panel view
part number 3922 040 02881
1. +12V (Maximum Dissipation 3W)
2. Power Return
3. Shield
Cable connector part numbers
2
3
1
2-14 Technical Manual LDK 20(S) - Studio Camera Installation
Camera system
Transmission system
NTSC/PAL
Pick-up device
3 x 2/3-inch Thomson DPM Frame Transfer CCDs
Smear performance
No vertical smear
Aspect ratio
4:3/ 16:9 switchable
Picture elements
4:3 and 16:9 aspect ratio
NTSC: 1000(h) x 498(v)
PAL: 1000(h) x 594(v)
Optical system
F1.4 with quartz filter
Filter cassette with Optical filters
Exchangeable filter cassette with remote selectable 6
positions: Clear; ND 0.6; ND 1.2; ND 1.8; 4-point star;
6-point star
Video performance
Video processing
Hires Digital Processing with 12 bit A/D and 14 bit DSP
technology
Digital features
Flare; White shading; Contrast; Highlight Handling; 6 point
var. Matrix; Matrix-pos.; Gamma; Gamma Curve; Contour
include Skin detail and Extended Contour Gamma;
Leaking Pixel Corr.; VF video
Sensitivity
2000 lux (186 ft cd) at F8.0
Condition: 3200K, reflectance 89.9%, 0 dB gain
Minimum illumination
Approx. 2 lux at F 1.4 and +30 dB gain
S/N ratio at normal gain
Typical: 61 dB PAL and 63 dB NTSC
Remark: +6dB S/N improvement with High Resolution
Digital Noise Slicer
Modulation depth
>70% at 5Mhz in RGB Centre
equivalent 800 TV lines
Remark: >65% at 5Mhz in RGB Centre with High
Resolution Digital Noise Slicer
Registration
<25 ns (0.05%) in all three zones, normal operation and
not including lens errors
Exposure control
Down to 1/1000s
Lighting control
NTSC: nominal, 60 Hz +/-4 Hz
PAL: nominal, 50 Hz +/- 3 Hz
Clean scanning
NTSC: between 61.1 and 151.0 Hz
PAL: between 51.0 and 103.0 Hz
General data
Concept
Studio configuration with PIP on 7-inch VF
Triax cable length
2,400m (7,875 ft) max. with 16mm (0.63") cable
Options for Long Triax available
Head weight (approx.)
26 kg (57.4 lb) excl. 7-inch VF
Head dimensions (lxhxw) in mm (inches) - approx.
367 x 305 x 240 (14.4 x 12 x 9.4)
Ergonomics
Moving VF position for easy camera fixing
Operating ambient temperatures
-20 to +45°C (-4 to +113°F) for Camera Head
0 to +45°C (32 to +113°F) for all other items
Stand alone power required 115/230V ac +/- 15%
Utility power Nominal 70VA
Max. 200VA (cable/system
dep.)
Power consumption 50 W
(Head + VF)
Power consumption 220W incl. Camera Head, VF,
(Average system) 70VA Utility; 700m (2.297ft)
Triax cable and lens
Audio performance
Audio channels 2 channels
Microphone power Selectable 0/+12V/+48V
Input levels at Camera Head -64 dB/ -24 dB/0 dB
Output levels at Base Station 0/+6 dB
Intercom performance
Intercom Headsets on Head Cam.Man
Intercom Channels ENG/PROD/PROG
Input levels at Camera Head -64 dB/-24 dB
Output levels at Base Station 0/+6 dB
Connectors Camera Head
Triax Option: Fischer/ARD/Lemo/
Trilock
Power AC-power connector
Lens 36p
Viewfinder 15p D
Mic In (Audio) 2 x XLR3
Cameraman headset Option: XLR5/Tuchel
Video out Option: 1 Vpp; 75 Ohm; BNC
Genlock in 1 Vpp; 75 Ohm; BNC
VF-out 1 Vpp; 75 Ohm; BNC
TP-video out 1 Vpp; 75 Ohm; BNC
External Camera Control 4p DATA
VTR 26p SMPTE
Scriptlight power 3p; 12V
AUX 11p; private data
Tracker 11p; Communication/Signalling
Connectors Base Station
Triax Option: Fischer/ARD/Lemo/
Trilock
Power AC-power connector
Audio out 2x XLR3
Intercom ENG/PROD/PROG
via 15p D-connector
Signalling Call/Tally R/Y via 15p D-conn.
CVBS (3x) 1 Vpp; 75 Ohm; BNC
RGB 700 mVpp; 75 Ohm; BNC
Y, R-Y, B-Y 700, 525, 525 mVpp; 75 Ohm;
BNC
PXM 1 Vpp; 75 Ohm; BNC
WFM 1 Vpp; 75 Ohm; BNC
Serial Digital (2x) 270 MB/s Option: 800 mV; 75 Ohm; BNC
Ext 1, 2 1 Vpp; 75 Ohm; BNC
Genlock in 1 Vpp; 75 Ohm; BNC
TP-video input 1 Vpp; 75 Ohm; BNC
Ext. Camera Control 4p DATA
Viewfinder
Type 7-inch B/W
Features Picture in Picture; Crosshairs;
Cursorbox
Resolution > 700 TVL
Weight 7 kg (15.4 lb)
Power 30 W
These typical specifications are valid for PAL and NTSC
systems and are subject to change without notice
Specifications LDK20
Replacements Technical Manual LDK 20(S) - Studio Camera 3-1
Section 3
Replacements
This section gives information on the procedures to follow when replacing printed circuit boards and
mechanical components at first line level.
Contents
Introduction ........................................................ 3-2
Printed circuit boards ......................................... 3-2
Front module ...................................................... 3-3
Filterwheel Cassette ........................................... 3-4
Power supply ..................................................... 3-4
3-2 Technical Manual LDK 20(S) - Studio Camera Replacements
Introduction Printed circuit boards
The instructions given in this section are restricted to
those modules which can be replaced at the first line
level. After a printed circuit board has been replaced it
is sometimes necessary to carry out adjustments to
match the new boards to your camera and so maintain
the performance levels. The relevant adjustment
procedures are referenced in section 4.
The procedures for removing the modules should be
followed in reverse order when remounting the units.
To remove a printed circuit board proceed as follows:
a. Open the side cover (see section 2).
b. Swing the black cover 1 of the printed circuit board
open.
c. Pull horizontally on this cover to free the board from
its connector and slide it clear of the camera.
1
Replacements Technical Manual LDK 20(S) - Studio Camera 3-3
To remove the front module proceed as follows:
a. On the frontside of the camera remove the four
screws 1 securing the front assembly.
b. Remove the front assembly from the camera.
c. Remove the Front Interconnection Board by
unscrewing two screws from the backside of the
front module.
d. Loosen the four screws 2 securing the front
module.
e. Slide the front module straight out of the front
assembly.
Front module
1
1
1
1
2
2
2
2
3-4 Technical Manual LDK 20(S) - Studio Camera Replacements
To remove the filterwheel cassette proceed as follows:
a. Loosen the two screws 1 securing the cover to the
body of the front assembly.
b. Loosen the two screws securing the cassette to the
body of the front module.
c. Use the grip to pull the cassette horizontally out of
the camera.
To replace the filtherwheel cassette proceed as follows:
a. Push the cassette horizontally into the camera.
b. Tighten the two screws to secure the cassette to
the body of the front module.
c. Replace the cover and tighten the two screws 1.
Filterwheel Cassette
Before removing the power unit 1 unscrew the two
screws 2 on the top of the camera which secure the
power unit to the camera.
Power supply
1
1
Remote
On Air
Power
light Sys/Iso R
Auto
white
Script light Progr Prod E
Off
On
PTT
12V 0.25A
T
Select
R
Ext.1
G
Ext.2
B
Y/Ext.
-G Call
n
Filter1Filter2Filter3Filter4Filter5Filter
6
g
V
Camera
install
ABCD
View
finder
Audio
Function
Function Function Function
Intercom
2 2
1
Adjustments Technical Manual LDK 20(S) - Studio Camera 4-1
Section 4
Adjustments
This section contains the adjustment procedures to be followed to obtain the best performance from
the camera. These procedures need only be used if, following a module replacement, the camera
does not perform according to specifications.
Contents
Introduction .......................................................... 4-2
Test Equipment ................................................... 4-3
Set-up Instructions............................................... 4-3
Video Processor 1 Board ..................................... 4-5
Digital Video Processor ..................................... 4-10
Digital Video Processor ..................................... 4-11
Digital Video Processor Subboard .................... 4-12
Digital Video Processor Subboard .................... 4-13
Digital Video Processor ..................................... 4-14
Digital Video Processor ..................................... 4-15
Video Miscellaneous Board ............................... 4-17
Sync./Shading Board ......................................... 4-27
Video Miscellaneous Board ............................... 4-35
Encoder Board PAL ........................................... 4-37
Encoder Board NTSC ........................................ 4-43
Audio/Intercom LF Board ................................... 4-51
Audio/Intercom LF Board RTS MODE .............. 4-55
Pre-Processor Board ......................................... 4-57
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