Link HD User manual

Link HD System Manual

Link HD System Manual
Document # -HD System Man Iss 1.1 Issue 1.1 06/11/2007
Page 2 of 31
Contents
1General 3
1.1 Safety 3
1.2 Compliance 3
1.3 Document Status 4
1.4 Firmware Version 4
2System Operation 5
2.1 L1403 Link HD Transmitter 7
2.1.1 Controls and Display 7
2.1.2 Operators Menus 8
2.1.3 Transmitter Setup 9
2.1.4 L1403 Connector Interface 12
2.2 L1420 Camera Controller / Data Receiver – Optional 12
2.3 L3020 Down Converter 13
2.3.1 Filter Selection 13
2.3.2 Cable types 13
2.3.3 Controls and Monitoring 13
2.4 L2132 Receiver 14
2.4.1 Controls 14
2.4.2 Operator Menus 15
2.4.3 Receiver Setup 18
2.4.4 Connectors 19
2.5 L1255 Wireless Camera Control Unit (CCU) Interface 19
2.5.1 Controls and Setup 19
2.5.2 Connectors 19
3Unit Description 20
3.1 L1403 HD Transmitter 20
3.1.1 Video Formats 20
3.1.2 Input / Output Connections 21
3.1.3 Mechanical 23
3.2 L1420 Camera Controller 23
3.3 L3020 Down Converter 25
3.3.1 Input / Output Connections 25
3.3.2 Mechanical 25
3.3.3 Power 25
3.4 L2132 Receiver 26
3.4.1 Input / Output Connections 26
3.4.2 Mechanical 27
3.4.3 Power 27
3.5 L1255 Data Transmitter 28
3.5.1 Input / Output Connections 28
3.5.2 Mechanical 29
3.5.3 Power 29
4Maintenance & Firmware Upgrades 30
4.1 Remote Control Commands 30
4.2 Firmware Upgrades 30
4.3 L3020 Down Converter Filter Change 30

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Page 3 of 31
1 General
Please refer to the Link Research website, www.linkres.co.uk, for the latest information. A customer section is available
within the Support Area.
This manual is intended to support the two frequency variants of the Link HD transmitter and down converters.
As the operation of these two variants is identical, all references in the text will be to the 2GHz variant; L1403 and L3020.
Frequency Band Transmitter Down Converters / Filter
1.95GHz to 2.7GHz L1403 L3020 + L3030
3.4GHz to 3.58GHz L1405 L3050 + L3060
In all support requirements or in case of unit failure please contact Link directly. Always refer to the Link web site for
firmware upgrades, interoperability and support in general before contacting Link Research Ltd.
Link Research Ltd.
http://www.linkres.co.uk/support.php
Email:- mailto:[email protected]
Tel:- [phone]
1.1 Safety
The L2132 Receiver unit and L1255 Data Transmitter must be earthed; either via an earthed mains supply or a separate
earth connection.
Operate within the environmental limits of the product and ensure there is adequate ventilation.
Only authorised trained personnel should open the product. There are no functions that require the user to gain access to
the interior of the product and the warranty will be invalidated if the unit seals are broken.
For safety guidelines relating to the use of microwave radiation please refer to the document available at the Link Research
website. http://www.linkres.co.uk/support.php
1.2 Compliance
This equipment has been designed to meet the requirements of the following:-
EN60950 European Safety of information technology equipment including business equipment.
UL 1950USA Safety of information technology equipment including business equipment.
EN 55022 European Emission Standard equipment-class A.
EN 55103-2 European Generic Immunity Standard.
ETSI EN301 - 489 - 3 For Radio Equipment in the range of 1GHz to 40GHz
ETSI EN300 - 440 -1 For Radio Equipment in the range of 1GHz to 40GHz
The CE mark is affixed to the LinkHD and the EC Declaration of Conformity and Technical File is available on request.
For further information please refer to the Link Research Ltd website. www.linkres.co.uk,

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1.3 Document Status
Issue Date Comments
A March 06 Working draft
B 8th March 06 Changes after initial comments
1.0 24th March 06 First release
1.1 5th July 06 Power switch added, video formats,
20MHz LMS-T operation
1.4 Firmware Version
Please refer to the Link Research website for the current firmware release available for this product.
http://www.linkres.co.uk/support.php
Firmware upgrades are also available via this link.

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2 System Operation
The Link HD wireless radio camera system comprises of three main components :-
Link HD Transmitter - L1403 (2GHz) or L1405 (3GHz)
Link RF Down Converter (2 off) - L3020 (2GHz) or L3050 (3GHz)
Link HD Receiver - L2132
Optional components for camera control :-
Link Wireless CCU Interface - L1255
Link HD Camera Controller - L1420
Camera manufacturers OCP - Grass Valley OCP400; Sony 700 Series, Ikegami HDK series
The basic system will include 3dBi Omni vertically polarized antenna for the transmitter and down converters; a range of
alternative antennas can be supplied to meet different operational requirements.
These will provide the basic operation of the Link HD system although other configurations are possible including diversity
operation; Triax interconnection etc.
Please contact Link Research Ltd for details.
(Optional)
ASI In
CH 1 CH 2
ASI Out SDI Out#1 SDI Out#2 F/Lock
RF #1
RF #2
Remote / Data Camera Control
TAL LY A
Remote / Data
Receiver Interface
Antenna
TAL LY B
OCP - Sony
OCP - RS232
L1403 L3020
L2132
L1255
OCP400
L I N K
L1420
(Optional)

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The only connections to the L1403 HD Transmitter unit are HD SDI video, analogue audio and if required an RS232 data
link. Power is supplied either via the attached battery plate or external LEMO connector.
The power switch on the base of the L1403 is provided to switch the L1403 / L1420 when power is supplied from the rear
battery plate. This switch cannot be used to control the supply to the forward camera interface plate which is always fed
power from the battery.
The power to the L1403 is also always supplied from the LEMO connector, if required an external switch must be used to
control the unit.
The L1403 can be supplied with various interface plates providing mounting of different batteries and to different camera
mounts - either IDX / Sony ‘V’ , PAG Lok or Anton Bauer Gold Mount are available.
Adaptor brackets are also available to allow mounting of the L1403 to the rear of Thompson LDK6000 series of cameras.
These interface plates provide a ‘quick release’ mechanism of the L1403/L1420 from the HD camera.
Link Part Number
Battery Interface IDX / Sony ‘V’ L9935
PAG L9936
Anton Bauer L9937
Camera Interface IDX / Sony ‘V’ L9932
PAG L9933
Anton Bauer L9934
Camera Bracket – LDK6000 Series IDX / Sony ‘V’ L9938
PAG L9939
Anton Bauer L9940
Link Research also supply suitable leads for use with the Link HD system.
Audio L0001 Lemo to two XLR3
RS232 Data L0002H Lemo to 9W ‘D’ Type
DC Power L0003 Lemo to bare ends
RF75lead L0014 ‘BNC’ to ‘BNC’ down converter lead
A transmit antenna is directly mounted to the unit via the 50‘N’ type connector.
The receive antenna is then directly docked onto the L3020 Down Converter which converts from the 1.95 - 2.7GHz (or 3.4
– 3.58GHz) frequency to the UHF signal that is fed to the L2132 receiver via a 75cable.
This single cable also carries the phantom power used to supply the L3020 Down Converter.
Depending upon cable quality and other factors this can be up to 100m from the L2132 Receiver.
The SDI video, ASI and audio outputs are then taken from the rear of the L2132 ½ width ‘19” rack receiver unit.
Camera
Interface
Battery
Interface
L9932
(IDX shown)
L9935
-IDXshown

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2.1 L1403 Link HD Transmitter
The Link HD L1403 is a compact HD MPEG2 encoder/transmitter covering the 1.95-2.7 GHz (or L1405 for the 3.4-3.58
GHz) frequency range for broadcast applications.
2.1.1 Controls and Display
The L1403 is configured by the operator using the menu structure displayed on the colour LCD display , six membrane
push buttons are used to navigate through these menus and select the required data. Please see Section 2.1.2 for details
of the menu structure.
The left / right buttons are used to select the required top level menu, as indicated by the ‘tabs’ at the top of the display.
The up / down buttons are then used to scroll to the required sub-menu option.
Enter selects this option which can then be modified with the up / down buttons.
Enter will then select the option or Cancel will exit back to the level above without selecting or changing the settings..
Alternatively the unit can be configured from a PC terminal using the Link Control software. Please see Section 4.1 of this
manual for details of this software.
Cancel
Navigation
Buttons
Enter
Colour
Display
StatusTab
Advanced Tab
SetupTab

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2.1.2 Operators Menus
The Greyed Out parameters not selectable with the current version of code.
The table below is spilt into the three ‘Tabs’ corresponding to STATUS, SETUP and ADVANCED.
Status Sub Menu Options Function
Alarm Status Video Lock Display whether encoder is locked to the video input
Audio A Lock Display whether encoder is locked to the audio input
Audio B Lock Display status
Frequency 2.345GHz Display & Set current Frequency
Modulation QPSK, 16, 64QAM Display & Select mode
HD Input 1080i/25 Display current video standard
Setup Options Function
Output Off, Carrier Low ,
Carrier Only, On
RF output selection
Profiles Last Used Display last
Store Store in 1:6
Load Load from 1:6
Restore Defaults Factory Defaults
LCD Setup LCD Contrast Setable 1:9 Set to 9 - maximum
LCD Backlight Setable 1:7 Set to 7 - maximum
LCD Timeout On , Off
Camera Control Freq Set required UHF frequency
Only if L1420 is Cam Type Set required camera type
fitted Status CC OK Confirms Camera Controller status
Advanced Options Function
Video HD Input Select HD format
Test Patten On, Off
Video Loss Bars On, Off, Video+Audio
Auto Line Std On, Off
Audio DID 0:9999
Noise Reduction On, Off
Frame Rate Display current
Video Lock Displays status
DVBT/LMST Output Off, Carrier Low , Carrier Only, On
Guard Interval 1/4, 1/8, 1/16, 1/32
Modulation QPSK, 16, 64QAM
FEC Rate 1/2, 2/3, 3/4, 5/6, 7/8
Polarity Normal , Invert
Width 6, 7, 8, 10, 20 MHz
Power 10, 50, 100mW
Freq Set current Frequency
Delivery Desc. On, Off
DVBS Output Off, Carrier Low , Carrier Only, On
Sym 1.234MSym/s
Modulation QPSK, 16, 64QAM
FEC Rate 1/2, 2/3, 3/4, 5/6, 7/8
Polarity Normal , Invert
Power 10, 50, 100mW
Frequency Set current Frequency
Roll Off 25 , 35%
Delivery Desc. On, Off
Unit Unit Mode ASI, LMS-T, DVB-T, Reserved
422 DTS Offset 0 – 999 offset
420 DTS Offset 0 – 999 offset
Soft Version Version Number
UpConv Type
FPGA Version
Ser. Num Unit Serial Number

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Remux Source SDI/ASI,Off,Aux
Rate Displays Current Rate
Active Displays state
Encoder Encoder On,Off,On If Video
Profile 4:2:0 , 4:2:2
Auto Rate On, Off
Bit Rate Sets encoder rate
Mode Standard, Low Delay
Aspect Ratio 4:3, 16:9
GOP Length 1:15
VBI in Pict On, Off
PID 0 - 9999
Audio A Audio A Off, MPEG II Layer 1, MPEG II Layer 2,
Linear PCM
* video input
required
Input Test Tone*, ID, AES-EBU, SDI
embedded,Analogue
Bit Rate 128, 160, 192, 224, 256, 320, 384KBps
Mode Dual Mono, Stereo
Language Eng, Fre,Ger,Spa
PID 0-9999
Audio A Lock Status
Tone Level Set test tone output level
Line/Mic Select analogue input
Phantom Power On, Off
Right Mic Level Set Mic left level
Left Mic Level Set Mic right level
Right Line Level Set Line left level
Left Line Level Set Line right level
Audio B As Audio A
Multiplexer ASI OP Off,188, 204 byte
Bit Rate Sets required ASI output rate
Service
Network
PMT PID Sets PID 0 - 9999
PCR PID Sets PID 0 - 9999
Local Service On, Off
Program ID Sets ID 0 - 9999
RS232 Data Data Off, TTV, CJM2, Fast
Baud Rate 1200-38400
PID Sets PID 0 - 9999
2.1.3 Transmitter Setup
It is important that when changing between modes of operation it is necessary to check and re-select certain operating
parameters due to interaction of some of these parameters.
For example when changing from DVB-T to LMS-T mode it will be necessary to reset the required modulation scheme.
In the following examples the menus are described by :-- Tab Menu / Sub Menu / Function
Following a ‘Restore Factory Defaults’ (Setup/Profiles/Restore Defaults) it will be necessary to select the required operating
mode and modulation configuration as the factory defaults will not currently give an operational setup and may result in
‘garbage’ characters on the display.

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2.1.3.1 DVB-T Operation
The following sequence defines the changes and sequence required when changing to DVB-T operation :-
Step Menu Sub Menu Option Setting
1 Advanced Unit Unit Mode DVB-T
2 Advanced DVBT/LMST Guard Interval As Required
3 Advanced DVBT/LMST Modulation As Required
4 Advanced DVBT/LMST FEC Rate As Required
5 Advanced DVBT/LMST Polarity Normal
6 Advanced DVBT/LMST Width Fixed at 8MHz
7 Advanced DVBT/LMST Power As Required
8 Advanced DVBT/LMST Frequency As Required
9 Advanced DVBT/LMST Output On
The MPEG2 encoder will set the data rate appropriately to match the modulation scheme settings.
The Table below defines the corresponding bit rates for DVB-T operation.
Modulation GI
CR
1/4 1/8 1/16 1/32
QPSK 1/2 4.97 5.52 5.85 6.03
QPSK 2/3 6.63 7.37 7.80 8.04
QPSK 3/4 7.46 8.29 8.78 9.04
QPSK 5/6 8.29 9.21 9.75 10.05
QPSK 7/8 8.70 9.67 10.24 10.55
16QAM 1/2 9.95 11.05 11.70 12.06
16QAM 2/3 13.27 14.74 15.61 16.08
16QAM 3/4 14.92 16.58 17.56 18.09
16QAM 5/6 16.58 18.43 19.51 20.10
16QAM 7/8 17.41 19.35 20.49 21.11
64QAM 1/2 14.92 16.58 17.56 18.09
64QAM 2/3 19.90 22.11 23.41 24.12
64QAM 3/4 22.39 24.88 26.34 27.14
64QAM 5/6 24.88 27.64 29.27 30.16
64QAM 7/8 26.12 29.02 30.73 31.66
These rates can be confirmed by checking the Advanced/Multiplexer/ Bit Rate menu.
It should be noted that this corresponds to the total data rate from the multiplexer which includes the video, audio and any
user data.
2.1.3.2 LMS-T Operation
The following sequence defines the changes and sequence required when changing to LMS-T operation :-
Step Menu Sub Menu Option Setting
1 Advanced Unit Unit Mode LMS-T
2 Advanced DVBT/LMST Guard
Interval
As Required. 1/8 or 1/16
3 Advanced DVBT/LMST Modulation As Required 16Q or
QPSK
4 Advanced DVBT/LMST FEC Rate 2/3 Only
5 Advanced DVBT/LMST Polarity Normal
6 Advanced DVBT/LMST Width 10MHz or 20MHz
7 Advanced DVBT/LMST Power As Required
8 Advanced DVBT/LMST Frequency As Required
9 Advanced DVBT/LMST Output On
10 Advanced Encoder Bit Rate Auto
The encoder will set the data rate appropriately to match the modulation scheme settings.

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The Table below defines the corresponding bit rates for LMS-T operation for both 10MHz and 20MHz operation.
Modulation GI
CR
1/8
10MHz 20MHz
1/16
10MHz 20MHz
QPSK 2/3 9.2 18.4 9.7 19.5
16QAM 2/3 18.4 36.8 19.5 39
These rates can be confirmed by checking the Advanced/Multiplexer/Bit Rate menu.
It should be noted that this corresponds to the total data rate which includes the video, audio and any user data.
Due to the improvement that LMS-T has over DVB-T these settings give approximately 50% improvement of bit rates for the
same level of ruggedness of the RF link.
For example DVB-T 16QAM, 1/32 GI, 1/2 CR gives 12Mbits whereas LMS-T 16QAM gives 18Mbits
2.1.3.3 ASI Operation
The L1403 can be used as an MPEG2 HD encoder providing an ASI output. The modulator and RF Up converter are not
required in this operating mode.
This provides ASI streams up to 65Mbits.
Step Menu Sub Menu Option Setting
1 Advanced Unit Mode ASI
2 Advanced Mux Bit Rate As Required
3 Advanced Encoder Bit Rate As Required
The encoder bit rate cannot be set above the Mux bit rate, if an attempt is made to exceed the mux setting the encoder
value will clamp to the highest allowed rate.
2.1.3.4 Video Input Format
It is important that the encoder is configured to match the incoming video format. The rates MUST match otherwise the
encoder may appear to operate correctly but then fail with changing video images.
Menu Sub Menu Option Setting
Advanced Video HD Input Unit As required
Please see Section 3.1.1 for Video formats supported by the L1403 encoder.
2.1.3.5 Audio Input Format
Step Menu Sub Menu Option Setting
1 Advanced Audio A or B Audio Encoding as required
2 Advanced Audio A or B Input As Required
3 Advanced Audio A or B Bit Rate As Required
4 Advanced Audio A or B Mode As Required
5 Advanced Audio A or B Line / Mic As required
6 Advanced Audio A or B Phantom Pwr If Mic selected
7 Advanced Audio A or B Mic or Line Level *Set level ~160
* Note: This version of software does not have logarithmic control of audio levels, therefore the setting of the level is very
coarse !

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2.1.4 L1403 Connector Interface
Top Panel Connector RF out N Type Male 50 ohm connector.
Lower Panel Connectors Position of panel connectors on the L1403 transmitter.
Connector type Legend Description
BNC 75bayonet socket SDI In HD-SDI (SMPTE 292M)
BNC 75bayonet socket ASI OUT DVB-ASI – output from the MPEG2 encoder
BNC 75bayonet socket ASI IN DVB-ASI – into the Remux
USB REMOTE USB interface – future use
6 way LEMO DATA RS232 connection for Link Control
4 way LEMO PWR External 12V battery supply if rear ‘clip on’ battery is not
used.
It is also possible to take power from the ‘clip on’ battery.
Care must be taken to ensure that the ‘clip on’ battery on
the rear of the L1403 is not ‘back fed’ by an external
battery or power supply.
Power Switch Used to control the L1403/L1420 when supplied from the
rear ‘clip on’ battery.
Please see Section 3.1.2 for connector pinout details.
Please see Section 3.1.2.5 for detailed operation of the power switch.
2.2 L1420 Camera Controller / Data Receiver – Optional
All configuration of the camera controller is via the main L1403 LCD display and operators menu. :- Setup/Camera
Control/Cam Type.
The only functions that require to be configured are :-
Camera Type - Thomson (LDK6000)
Sony (HDC1500)
Ikegami
Frequency - Dependant upon the configuration of the UHF radio, please contact Link for details.
The following leads are supplied for connection between the camera controller (CC Data connector) and camera head.
Thompson- LDK6000 L0016
Sony L0017
Connector type Legend Description
4 way LEMO Tally Connection to external Tally light – future design
6pin LEMO CC Data Serial control data to camera head.
Please see Section 3.2.1.1 for cable and connector pinout details.

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2.3 L3020 Down Converter
The L3020 is supplied with a L3520, +3dBi vertically polarised omni-directional antenna; alternatively it may be used with
the L3480, 6dBi vertically polarised 180° directional antenna which is available from Link Research Ltd..
The down converter is supplied with a universal bracket for pole mounting. For temporary installations, tie wraps may be
used; for permanent installation U-bolts should be used.
Whichever method of mounting is used, it must be capable of supporting the weight of the L3020 and the coaxial down
lead.
No other connections are required as the unit is powered from the receiver via the RF down lead.
2.3.1 Filter Selection
The L3020 is supplied with an add-on filter with a passband of 1.95GHz to 2.7GHz thus rejecting all out-of-band unwanted
signals. Alternative narrow band filters can be used with the L3020 making it even more frequency selective.
L3030 1.95GHz to 2.7GHz (supplied as standard)
L3033 2.2GHz to 2.3GHz
L3034 2.3GHz to 2.4GHz
L3037 2.5GHz to 2.7GHz
The L3050 is used for 3.4GHz to 3.58GHz band in conjunction with the L3060 filter unit.
Changing the filter requires the removal of four screws. This is detailed in Section 4.3 of this manual.
2.3.2 Cable types
Ideally the receive antenna should be mounted directly on the down converter. Where this is not possible, the shortest
length of cable should be used to minimise the losses. A low loss heliax such as Andrew type LDF450 should be used.
This is a ½” thick cable using foam dielectric and solid copper outer. Other similar low loss thick cable can be used.
For the cable between the down converter and the receiver, a low loss foam dielectric such as Commscope RG59 or RG11
75 cable should be used. In addition to being low loss, these cables have an extra layer of screening making them more
robust and less susceptible to interference. Using these cables will allow a 100 metre run with RG59 or 150 metres with
RG11. For details of Commscope cables and local distributors visit www.commscope.com
2.3.3 Controls and Monitoring
There are no operators controls fitted to the L3020 Down Converter.
An LED on the front of the unit indicates the status.
Colour Function
Red Power OK
No communications to the filter unit
Amber Power OK
Communications to the filter unit ok
Off No power present.
Changeable Filter
block
Down Converter

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2.4 L2132 Receiver
The diagram below shows the function of the front panel controls and displays necessary to operate the receiver.
STATUS
ALARM
POWER
L2100 DIVERSITY IRD - Ultra Low Delay
2.4.1 Controls
The operation of the receiver is through the six membrane buttons on the front panel of the receiver. These allow the
operator to navigate through the various menus.
Control/Display Function
Enter button Selects the currently selected parameter.
Exit button Cancels any parameter changes and Escapes to higher menu.
Up button Allows upward navigation in a sub menu.
Down button Allows downward navigation in a sub menu.
Left button Allows movement to the left when changing parameters within a menu
setting.
Right button Allows movement to the right when changing parameters within a menu
setting.
LCD window Displays menu settings and system status
Status LED (yellow) When lit, the receiver is locked to a signal.
Alarm LED (red) When lit, an alarm has been detected.
Power LED (green) When lit, power is applied to the receiver.
Left
button
Enter
button
LED indicators
Liquid crystal display Exit button
Down
button
Right
button
Up
button

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2.4.2 Operator Menus
The following table indicates the top level menu structure and gives the cross reference for the detailed explanation of each
sub menus.
The ‘Up/Down’ buttons are used to scroll through the menus,
‘Enter’ is then used to select and enter the sub-menu.
‘Enter’ selects the required parameter or ‘Exit ‘ can be used to return to the level above without selecting the new
paramenter..
Menu Function Reference
Status Displays Rx Lock Status
Memory Menu Used to select and store the configuration menus See 2.4.2.1
OFDM Demod Menu Used to select and monitor operating frequency and
demodulation settings
See 2.4.2.2
Descrambling Menu Used to select and configure required descrambling See 2.4.2.3
Decoder Menu Shows Service name and Decoder status, selects required
audio configuration,
See 2.4.2.4
RS232 Menu Configure RS232 port See 0
Unit Menu Configure Down Converter, Shows code versions, selects
operating mode
See 2.4.2.6
CCU Camera Control If L1255 is connected, selects UHF frequency and OCP type See 2.4.2.7
2.4.2.1 Memory Menu
Sub menu Options Comments
Store –Config? Config 1…9 Stores the current settings into selected memory location 1 to 9
Load – Config? Config 1…9 Loads stored settings from the selected memory location 1 to 9
No Does not change the current active settings.
Default Restore No Yes Restores the current active settings to factory defaults.
NB – If the receiver cannot be set up, it is worth using this option and then
restarting the set-up again.
Last Config # None Shows the last configuration (memory) that was used.
2.4.2.2 OFDM Demod Menu
Sub menu Options Comments
IPFreq #.###GHz
Enter required
frequency
The transmit frequency of the camera transmitter is entered here. Note that
although tuning steps of 10kHz can be entered on the screen, when the enter key
is pressed the receiver locks to the nearest 1MHz step.
If the down converter settings in the Unit menu are set to L3010 or L3020 (Link),
the frequency is automatically copied to the OFDM Demod 2 menu. If the down
converter setting is set to Other, a frequency can be entered that does not have to
be the same as in OFDM Demod 2.
DConvLO
#.###GHz
Enter required
frequency
The down converter local oscillator frequency is entered here. Where Link down
converters are being used, the figure is automatically entered from a menu setting
in the Unit menu. For down converters from other manufacturers enter the local
oscillator frequency here: see supporting documentation for details.
High Selects the local oscillator output mix for the down Converter. Used with Link down
Converters. LoSide Low
Low Selects the local oscillator output mix for the down Converter. Used with other
manufacturers’ down converters. See supporting documentation.
Polarity ??? None Automatically detected from the incoming signal.
20MHz
10MHz
8MHz Channel bandwidth. Check with local RF Authorities for appropriate regulations.
7MHz Channel bandwidth. Check with local RF Authorities for appropriate regulations.
Width #MHz
6MHz Channel bandwidth. Check with local RF Authorities for appropriate regulations.
Guard ??? None Automatically picked up from the incoming signal. When a value is displayed here,
it is an indication that the receiver is locked to an incoming signal.
No Automatically detected: the receiver is not locked to any incoming signal.Lock ##
Yes Automatically detected: the receiver is locked to an incoming signal.
Modulation ??? None Automatically detected from the incoming signal.
FEC Rate ??? None Automatically detected from the incoming signal.
SNR #.####dBm None
Signal to noise ratio automatically detected from the incoming signal. The reading
shown is an instantaneous measurement taken at the time the return key is
pressed. To update the reading, the menu must be exited and then re-entered.
Modulation error rate automatically detected from the incoming signal. The reading

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MER #.####dBm None shown is an instantaneous measurement taken at the time the return key is
pressed. To update the reading, the menu must be exited and then re-entered.
InA Level ??? dB None Displays input level into RF1
InB Level ???dB None Displays input level into RF2
PreBER
#####.####e None
Pre viterbi error rate automatically detected from the incoming signal. The reading
shown is an instantaneous measurement taken at the time the return key is
pressed. To update the reading, the menu must be exited and then re-entered.
PostBER
#####.#### None
Post viterbi error rate automatically detected from the incoming signal. The reading
shown is an instantaneous measurement taken at the time the return key is
pressed. To update the reading, the menu must be exited and then re-entered.
Pkt Errs #.####
None
Packet errors automatically detected from the error corrected data stream. The
reading shown is an instantaneous measurement taken at the time the return key is
pressed. To update the reading, the menu must be exited and then re-entered.
2.4.2.3 Descrambling Menu
Sub menu Options Comments
Off An encrypted data stream will not be decrypted.
EBS Enables decryption of and EBS encrypted data stream.
BISS-1 Enables decryption of and BISS-1 encrypted data stream.
BISS-E Enables decryption of and BISS-E encrypted data stream.
AES Enables decryption of and AES encrypted data stream.
Descrambling ###
AES+ Enables decryption of and AES encrypted or non encrypted data stream.
EBS Key ‘’ None
Enables entry of an 8 digit hexadecimal key. The left and right arrows allow
scrolling to the left or right in the number. The up and down arrows enable
scrolling through the values 1 – 9 ,A – F
2.4.2.4 Decoder Menu
Sub menu Options Comments
Service ###### List of available
services
Shows the service name of the service to which the decoder is currently locked.
Pressing enter brings up a list of available services which can be scrolled
through. Pressing enter selects the new service. If the receiver is not locked No
Service is displayed and a DEC error warning flashes on the display.
Default ‘#####’ Service 01 Enables the setting of the service the receiver will automatically lock onto.
1080i25 Defines the video output standard before a stream is received & decoded
1080i29
1080i30
720p50
720p29
720p30
625
Pwr Video xxxx
525
Ana Sets Audio A output to analogue.Aaudio O/P ###
Dig Sets Audio A output to digital – AES3
Ana Sets Audio B output to analogue.Baudio O/P
Dig Sets Audio B output to digital – AES3
Aud DID Group ## Off Allows the audio data identifier for embedded audio to be selected
Group 0
Group 1
Group 2
Group 3
Locked ### None Shows when the receiver is locked to a valid input signal. Yes or No will be
displayed according to the status.
Fail mode ###### Freeze If the input to the receiver is lost, the last good frame of video is displayed.
Blue If the input to the receiver is lost, a blue screen is displayed.
Line Std ### None Displays current received video standard
Off The unit is free running and not locked to any external source.
Framelock ###
On
The unit’s video is frame locked to an external source and will be slightly delayed.
If Framelock is set to on and no synchronising input is detected, an alarm, GEN,
flashes on the display.
NB – the colour sub carrier is not locked to the synchronising source.
Offset ##### pix None Allows delay or advance of the framelock in the range of 0 – 9999 pixels. 5000 is
the centre of the range. 1 pixel = approx 74.63 nano seconds.

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2.4.2.5 RS232 Menu
Sub menu Options Comments
Off Inhibits any RS232 data being output.
Data ### On Allows RS232 data to be output. See remote control protocol for details of data
types and encoding settings.
Baud rate #### None Automatically detects the baud rate of the data stream. If no data is detected,
(null) is displayed.
Parity None Automatically detects the baud rate of the data stream.
2.4.2.6 Unit Menu
Sub menu Options Comments
Address # None Allows the unit address to be set where multiple receivers are controlled from
the same source. A value between 0001 and 9999 can be set.
LNB Power ###
Yes Power is supplied via the down leads to the down converter. On the display
LNB ON is shown in the bottom left corner.
No There is no low voltage power supplied to the down leads.
OSD Status Not supported in this version of code.
Soft version: ### None Displays the version of the currently installed firmware.
FPGA version: ## None Displays the version of the currently installed FPGA code.
SerNum ###### None Displays the electronic serial number of the unit.
Lcod ‘//////////
None Allows a unique hexadecimal string (licence code) to be entered so that the
unit’s features can be upgraded or downgraded. The hex string is issued by
Link providing the correct conditions (payment) are satisfied.
Aux Address # Not supported in this version of code.
Lock ### Off Allows full control of all settings on the receiver.
On Allows the User to scroll through the menus but will not allow any changes to be
made to settings – other than Lock Off ! A padlock symbol is shown on the
display when Lock is on.
LCD Contrast # None Allows the contrast of the display to be varied in 16 steps.
Mode #### 10MHzCOFDM 10MHz (Single) LMS-T modulation
20MHzCOFDM 2 x 10MHz (Dual) LMS-T modulation
ASI ASI stream input (decode only) operation
DVBT/LMST DVB-T 10MHz Channel modulation
ASI Lock None Displays whether the decoder is locked to an incoming ASI stream
L3010 Use this setting for an older Link manufactured down converter. This setting
automatically enters the correct local oscillator frequency in the Demod menus
L3030 New style Link down converter with 1.95GHz to 2.7GHz filter
L3031 New style Link down converter with 2.00GHz to 2.11GHz filter
L3032 New style Link down converter with 2.1GHz to 2.2GHz filter
L3033 New style Link down converter with 2.2GHz to 2.3GHz filter
L3034 New style Link down converter with 2.3GHz to 2.4GHz filter
L3035 New style Link down converter with 2.4GHz to 2.5GHz filter
L3037 New style Link down converter with 2.5GHz to 2.7GHz filter
L3060 Link down converter with 3.4GHz to 3.58GHz filter
Other
Use this setting for other manufacturers down converters. The local oscillator
setting must be manually entered in the Demod menus.
By entering a value of 0 for the down converter local oscillator, the receiver can
be tuned in the range of 860MHz to 470MHz.
Dconv Type #####
None With this setting, the receiver automatically tunes to 70MHz.
Unit PCB ###### None Not supported in this version of code.
2.4.2.7 CCU Menu - Camera Control
Only available if connected to the L1255 data transmitter.
Sub menu Options Comments
Camera Type Select camera
type
Philips, Sony ….
Frequency Enter required
frequency
Set UHF transmitter frequency 450-470MHz

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2.4.3 Receiver Setup
The main functions that require configuration at the receiver are :-
•Type of down converter and operating frequency
•Demodulation scheme in operation; DVB-T, LMS-T or ASI input
•Frame Lock
•Audio Output
2.4.3.1 Down Converter Type
The following sequence defines the changes and sequence required when selecting the required down converter and
receiver RF frequency :-
Step Menu Option Setting
1 Unit DConv Type L3030
2 Unit LNB Power On
3 OFDM Demod IPFreq As Required
The demodulator will then automatically detect code rate, guard interval etc.
These received demodulation settings can be confirmed by checking the OFDM Demod menu.
2.4.3.2 Demodulation Scheme
The L2132 receiver can operate in three main operating modes :-
ASI input; acts as an HD decoder with ASI input into rear panel BNC
DVB-T; demodulator and HD decoder
10MHz COFDM; (LMS-T) demodulator and HD decoder
Menu Option Setting
Unit Mode ASI,10MHz, 20MHz, DVB-T
2.4.3.3 Frame Lock
The L2132 receiver can lock the decoder output to an external frame lock input. This can either be SD Black & Burst or HD
Tri-Level input into the rear panel BNC connector.
* Note- Tri-level sync is not supported on the current revision of hardware.
Menu Option Setting
Decoder Framelock On or Off
Decoder Offset +/- 5000 pixel offset
2.4.3.4 Audio Output Format
The L2132 receiver can output either analogue or AES3 digital audio from the rear panel XLR5 connectors.
Menu Option Setting
Decoder A Audio O/P Analogue or Digital
Decoder B Audio O/P Analogue or Digital

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2.4.4 Connectors
All connectors are mounted on the rear panel of the unit.
ASI In
CH 1 CH 2
ASI Out SDI Out#1 SDI Out#2 F/Lock
RF #1
RF #2
Remote / Data Camera Control
Connector type Legend Description
BNC 75bayonet socket RF1 & RF2 RF input, Power Out to the L3020.
Max input level -20dB
9-way D-sub socket Remote/Alarm/Data RS232 remote control and User data port
Alarm signalling
BNC 75bayonet socket SDI Out #1 & #2 HD-SDI Video output (SMPTE 292M)
BNC 75bayonet socket Frame lock Delays the output signal by up to 40ms to lock
the video frames to an external reference.
NB – colour sub carrier is not locked.
BNC 75bayonet socket ASI Output ASI output from demodulator
BNC 75bayonet socket ASI Input ASI input for remux / diversity operation
5-way XLR Ch1 & Ch2 Each XLR can supply an analogue stereo pair or
single digital AES-EBU outputs
6pin LEMO Camera Control Interface to L1255 CC Data Transmitter
IEC socket* Mains 110 –220VAC Mains power input
4-way XLR panel mounted
plug*
DC in DC power input 9VDC – 32VDC
* Standard configuration is for IEC mains input. The DC input is optional and replaces the IEC socket.
2.5 L1255 Wireless Camera Control Unit (CCU) Interface
2.5.1 Controls and Setup
The L1255 has no operator controls as all configuration is from the L2132 Receiver.
Please see Section 2.4.2.7 for details of the CCU Menu. Three LEDs on the front panel indicate the status of the unit.
2.5.2 Connectors
Connector type Legend Description
BNC 50bayonet socket Antenna RF output to UHF antenna
9-way D-sub socket OCP RS232 connection to OCP
BNC 75bayonet socket Video Not Used
BNC 75bayonet socket ASI Output Not Used
BNC 75bayonet socket ASI Input Not Used
3-way XLR Tally 1 & Tally 2 Future use for tally input
6pin LEMO Rx In Interface to L2132 Reciever
IEC socket* Mains 110 –220VAC Mains power input
4-way XLR panel mounted
plug*
DC in DC power input 9VDC – 32VDC
* Standard configuration is for IEC mains input. The DC input is optional and replaces the IEC socket.

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3 Unit Description
3.1 L1403 HD Transmitter
The camera transmitter unit contains four board printed circuit board assemblies in one housing and an optional unit
containing the camera controller board and UHF radio modem :-
•Encoder
•Audio
•IQ Up Converter
•Display Controller
•Camera Controller (optional)
3.1.1 Video Formats
The L1403 transmitter unit will accept HD-SDI feeds in any of the following formats :-
Standard
Total lines
per frame
Total
samples
per line
Active
lines per
frame
Active
samples
per line
Interlace or
Progressive V freq H freq
1080I/60 1125 2200 1080 1920 I 60 Hz 33.75 KHz
1080I/59.9 1125 2200 1080 1920 I 60/1.001 33.716 KHz
1080I/50 1125 2640 1080 1920 I 50 Hz 28.125 KHz
1080P/30 1125 2200 1080 1920 P 30 Hz 33.75 KHz
1080P/29.9 1125 2200 1080 1920 P 30/1.001 33.716 KHz
1080P/25 1125 2640 1080 1920 P 25 Hz 28.125 KHz
1080P/24 1125 2750 1080 1920 P 24 Hz 27.0 KHz
1080P/23.9 1125 2750 1080 1920 P 24/1.001 26.973 KHz
1080P/24/sf 1125 2750 1080 1920 SF 48 Hz 27.0 KHz
1080P/23.9/sf 1125 2750 1080 1920 SF 48/1.001 26.973 KHz
720P/60 750 1650 720 1280 P 60 Hz 45 KHz
720P/59 750 1650 720 1280 P 60/1.001 44.955 KHz
720P/50 750 1980 720 1280 P 50 Hz 37.5 KHz
The formats highlighted in RED are not available with the current firmware. Please contact Link Research Ltd.
for details.
Encoder
Audio
IQ Up Conv. & Power Amp.
Front Panel
UHF
Radio
Modem
Camera
Controller
SDI
Analogue
Audio
Camera
Control
Data
ASI Camera Return Data