LDR Link User Manual
Contents
1. 39 Is the selected channel free of interference can be checked by using the PC control software connected to the telemetry receiver see telemetry receiver handbook advanced operation section The received power field of the telemetry receiver should show close to 120dBm when the transmitter is off this indicates the channel is free of interference 40 41 Cobham Surveillance Domo Products 11 Manor Court Barnes Wallis Road Segensworth Hampshire PO15 5TH England T 44 0 1489 566 750 F 44 0 1489 880 5382. control and configuration source 7 4 2 DC Power Connection The LDR Link unit can be powered from either a nominal 12V DC supply or from an external battery Connect the 3 pin Amphenol cable to the connector labeled DC IN taking care to align the connectors Connect the banana connectors on the other end of the cable to a suitable DC source The 12V DC input has the following characteristics Input Voltage Range 6V to 16V reverse voltage protected Power dissipation lt 3 5W domo can supply optional AC to DC converter blocks to power the LDR Link units please contact domo if these are required If the unit is in standby press and hold down the RF button to power up the unit 7 4 3 Control Connections The 7 way Amphenol connection is used for control interfacing The control cable is used for Control and is used to connect the LDR Link unit to a PC with a suitable RS232 control interface for connection to the domo PC GUI application or an embedded control application 7 4 4 Video Output Connect the video output to the Amphenol connector labeled Video Out 14 7 4 5 7 4 6 Connector Signal Video BNC on cable 75 ohm composite video source PAL or NTSC software selectable Typically the video monitor will be PAL or NTSC monitor Antennas The unit is supplied with 868MHz or 458MHz omni directional flexible antennas as standard These should be screwed directly to the panel mount TNC RF IN conn
3. 115200 None Even Odd 33 12 Connector Pin Outs 12 10 LDR TX and RX Power Amphenol Amphenol 3 way pin part no 62GB 57A08 33PN Pin A 12V Pin B GND Pin C unused 12 11 LDR TX and RX Control Amphenol Amphenol 7 way socket part no 62GB 57A10 07SN Pin A Unused Pin B RS232 data In Pin C unused Pin D Unused Pin E RS232 data Out PinF GND Pin G Unused 12 12 LDR TX and RX Video Amphenol Amphenol 4 way socket part no 62GB 57A08 04SN Pin A Power voltage out PinB GND Pin C Video GND screen Pin D Video Input transmitter Video Output receiver 13 Control Protocols The following section describes the control protocol employed on the RS232 link for controlling the LDR Link transmitters and receiver equipment Connection details are detailed in previous sections Note that only features that are licensed for use in the LDR Link units can be controlled The protocols listed here cover all possible features Attempting to activate an unlicensed feature will simply result in the command being ignored by the LDR Link unit TX commands sent to an RX unit and visa versa will be acknowledged have no effect 13 13 RS232 Control General Principles The physical interface is RS232 but this can be converted to RS 485 with an external adapter where multiple units are controlled over one RS 485 bus Normal operation involves sending a packet from the control device normally a PC to the devi
4. IP Tx Rx IP PID Rx Rx IP Status Rx IP Data Routing TxRx RW RW RW RW RW RW RW RW RW RW RW RW RW Integer Integer Integer Integer Integer Integer Integer Integer Integer Integer Integer Integer Integer Integer Integer Depends on unit type and license exempt operation 0x40 0x47 0 Off 9 9726 24Kbits s 10 9726 32Kbits s 0 Consumer level 1 4 12 24 36 48dB gain mic level Audio level which triggers TX on in discontinuous mode 0x40 0x47 0 Not present 1 Present 52 102dB 255 5dB 0 0dB 24 12dB 0x58 0x5f 0 off 1 2 channel RC 0x58 0x5f 0x30 0x37 0 off 1 on 115200 baud 2 on 230400 baud 0x30 0x37 0 None 1 on 115200 baud 2 on 230400 baud 0 Data RS232 IP TTL or 1 Data TTL IP RS232 13 17 LDR Link Encoder Decoder commands Comm ebau esta eres efra eloc dbau dser dsta Specific commands for the Low Data Rate Encoder Decoder are sent on address 0009 using the same control protocol The following commands are available Description Encoder baud rate Encoder line standard Encoder resolution Encoder frame rate Encoder video lock Decoder baud rate Decoder service lock Decoder line standard Enc D RW ec Enc RW Enc R Enc RW Enc RW Enc R Dec RW Dec R Dec RW 38 Type Integer Integer Integer Integer Integer Integer Integer Integer Comments 1 19200 baud 2
5. Off v Off hes Data gt R5232 IP gt TTL This control is used to turn on and off the RF output After a configuration change the output always reverts to OFF TX Duty Cycle This determines whether the transmitter operates in continuous or discontinuous mode Should be set to Continous Modulator Constellation The COFDM mode can be changed between QPSK and 16QAM QPSK is the default mode and will give the strongest most rugged RF link performance Selecting 16QAM reduces the link performance by 5 5dB but doubles the link data throughput Should be set to QPSK 21 8 2 4 8 2 5 8 2 6 8 2 7 8 2 8 8 2 9 8 2 10 Output Frequency MHz The transmit frequency can be changed by entering the new desired frequency in this field Values outside the range supported by a particular transmitter type will be rounded to the highest of lowest supported frequency as appropriate The transmit frequency can be set in step sizes of 12 5kHz In License exempt mode of operation the frequency bandwidth power level and TX duty cycle will be adjusted accordingly Output Power Attenuation This sets the output attenuation in dB 0dB corresponds to a nominal maximum level of 100mW Modulator Channel Width Sets the modulator channel width in 25kHz steps The width of the spectrum is about 4 5 of this channel width Should be set to 75KHz Typically only 50 75 100 and 125KHz are supported Data Enable Parity With thi
6. Transmitter When lit indicates RF output is active When blinking indicates transmitter is operating in discontinuous mode and is not currently transmitting waiting for data should not be used in LDRL Receiver When lit indicates receiver has signal lock Indicates which of the eight stored configurations is currently selected Transmitter Indicates output power level 5 10 15 amp 20 dBm 9 Receiver Indicates received signal quality RF Button Transmitter Pressing the RF button toggles the units RF output between OFF and ON Transmitter amp Receiver Holding down button toggles unit into standby mode Config Button The config button when pressed selects the next configuration from memory Holding down button toggles front panel lock Mode Button Transmitter No Function 7 3 Getting Started with the LDR Link Transmitter 34 Cables and Connections This section describes how to connect the following domo model numbers LDRTX 086087 LDRTX 045045 The picture below shows the domo LDR Link transmitter VIDEO IN IC OUT The domo LDR Link transmitter is supplied with the following cables Control Cable 2m 10 Connect to PC for DC Power 2m Video input Cable 2m The domo LDR Link transmitter should be connected as shown below Antenna Connected as Connect to video source shown onnect to DC power control and configuration source 73 2 7 3 3 DC Power Conn
7. if commands do not match against the allowed list of commands or if the checksum is wrong Addresses in the range 0001 to 9998 are for general use Address 0000 is reserved and 9999 is a broadcast address i e any device will reply to this address Its reply will contain its own specific address All data in the transmitter and receiver is stored as one of 5 data types Double String List Integer or HexInteger The data type dictates the contents of the data section of the reply List 1 byte for sending Value is hexadecimal coded as ASCII 2 byte reply Reply represents index into original choice list e g Reply 02 indicates entry 2 in original list Double variable length Reply always contains decimal point and 4 decimal places Can have 1 to 3 digits before decimal Integer 6byte reply integer value with stuffed with preceding zeros e g GOP reply 000012 GOP length 12 String Variable length Reply is string excluding null terminator Hexinteger 8byte Hex reply 36 13 16 Telemetry System Command List Comm gadd gser gver gfpg gdef glic gsle glod gtyp gau2 gfpl gstt oout omod odut ofre opwr onrt OMUX cflo cfhi cplv cton ctof dpid dinp dbau drem 1fre 1nrt 1ina loc 1snr dimer dina 1inb 1pre 1pos 1pkt 1mod fpid finp fbau frem zscr zkez zkex Description Unit address Unit serial number Software version number FPGA version number Resto
8. link can be formed With a suitable camera source connected to the LDR Transmitter video should be displayed on the monitor connected to the video output of the LDR Receiver The LDR system is a very low bitrate system and sends informational quality video The LDR system can be optimized by users to send different video frame rates and resolutions Frame Rate Options 2 5 or 12 F s Resolution Options CIF 352 288 pixels or QCIF 176 144 pixels Typically domo recommends the following settings 50KHz Bandwidth 2 Frames s CIF 75 and 100KHz Bandwidth 5 Frames s CIF 125KHz Bandwidth 12 Frames s CIF 17 8 Advanced Operation 8 6 Technical Overview 8 6 1 8 6 2 8 6 3 OFDM Transmission The LDR Link transmitter and receiver utilise Orthogonal Frequency Division Multiplex for modulation This modulation scheme provides excellent protection against multi path and interference The system employs interleaving and two levels of error correction Low Density Parity Codes amp BCH decoding to further enhance performance The modulator channel width may be set in multiples of 25kHz This determines spectrum bandwidth and the gross bit rate of the system in multiples of 14 7Kbits s The bandwidth of the modulated signal is roughly 4 5 of this channel spacing The default mode is 75KHz A combination of IF and digital filtering provide receiver selectivity The demodulator allows the user to read various parameters such a
9. product code and manufacturers information e CE and Serial Number Panel Gives CE mark and product serial number domo LDRTX 086087 UHF Made in the UK The domo product code can be referenced in the table below Product Code Product Accompanying items LDRTX 086087 LDR Link Cables enema 868MHz Omni Antenna os Control Cable 2m DC Power 2m Video In Cable 2m CD with operating software and manual LDRTX 045045 LDR Link Cables ens 458MHz Omni Antenna pais Control Cable 2m DC Power 2m Video In Cable 2m CD with operating software and manual LDRRX 086087 LDR Link Cables peel 868MHz Omni Antenna eed Control Cable 2m DC Power 2m Video Out Cable 2m CD with operating software and manual LDRRX 045045 7 2 Controls LED Button Alarm LED Front Panel Lock LED RF LED LED 1 to 8 Signal Strength LED s LDR Link Cables Ri i z Omn ecelver 458MHz O i Antenna 457 to e 2m C le 2 ontrol Cab DC Power 2m Video Out Cable 2m CD with operating software and manual LDR Link transmitters and receivers are equipped with a standard LED Light Emitting Diode and push button panel The panel is as depicted below and the buttons and LEDs have meanings as explained in the table O m0 ALARM JOD CONFIG Colour Red Yellow Green Green Green Meaning Use When lit indicates alarm or fault condition on equipment Not Currently Supported When lit indicates front panel is locked
10. user to change the path and name of the log file generated by the application Exit exits the SOLO4 receiver control application 24 8 3 LDR Link Receiver Control Application 8 3 1 8 3 2 8 3 3 Important version 1 3 and above of the telemetry controller should be employed with the LDRL transmitter EI LDRL receiver control File Options Part mn vi Connect Polling active Unit address 0003 Unit information Software version FPGA version Serial number Apply Refresh Save config Load config Save config set Load config set Input Frequency Unit parameters Input Frequency Demodulator Channel Width Demodulator constellation Input LNA gain Demod Lock Demod SNR Demod SNR B Input level Input level B Pre LDPC error rate Post LDPC error rate Packet error rate Data status Data baudrate Scrambling Audio status Audio headphone level IP status IP Data routing Current config Line standard Decoder lock 458 5625 75kHz vi QPSK High gain locked 7 0 BEE e No parity 38400 AES128 7 Not present 0 0 None Data gt R5232 IP gt TTL v 1 PAL The receive frequency can be changed by entering the new desired frequency in this field Demodulator Channel Width Sets the demodulator channel width in 25KHz steps This must match the modulator channel width For LDRL 50 75 100 and 125KHz a
11. 38400 baud 3 57600 baud 4 115200 baud 1 PAL 2 NTSC 1 CIF 2 QCIF 1 2 frames s 2 5 frames s 3 12 frames s 0 not locked 1 locked 1 19200 baud 2 38400 baud 3 57600 baud 4 115200 baud 0 not locked 1 locked 1 PAL 2 NTSC 0x40 255 0x40 0x58 0x58 0x30 0x30 Site Ea 14 Typical Ranges of the LDR Link Product Users of the LDR link product can expect operation over the following ranges Line Of Sight Where a line of sight is available between the transmitter and receiver is available then ranges of typically 20 40km are possible ranges of this type require true line of sight Non Line of Sight Operation Where there is no line of sight then users should expect a reduced range Typically 800m to 1km is achievable with no line of sight The trial below was performed in an urban environment and gives a reasonable indication of achievable range in an urban environment In the trial below both the transmitter and receiver where positioned at ground level File Edt View Tools Add Help 16 brunel way Amal 9 ss 1 Ma 4 3 eceive 1 TV Pix i 2008 Infote rua KG Elnod d A ae S N KI 008 Infoterggj Lt noe el Streaming N 000 rl Problem Solving a System Exhibiting Lack of Range If the system is not delivering ranges as described above then the user should check the following potential issues e Have the antennas been installed on a ground plane
12. Changing Configuration domo LDR Link equipment features eight user selectable and programmable configurations By default all 8 configurations are available to the user The configuration that is currently active is indicated by which of the eight configuration LEDs is lit on the control panel Pressing the CONFIG button on the control panel of any domo LDR Link equipment will select the next configuration in order On the LDR Link transmitters changing a configuration turns off the RF output to prevent accidental transmission and potential interference The RF output must manually be re enabled once the user is confident that the correct configuration has been selected Modifying the default configurations is done from the PC control application as described in the section on Advanced Operation Front Panel Lock Pressing and holding down the CONFIG button for more than 1 second will toggle the front panel lock feature This prevents accidental key presses on the panel affecting the unit s operation 16 7 5 6 7 5 7 Standby Any of the LDR Link transmitters and receivers can be placed in a low current consumption standby mode by pressing and holding the RF button for one second The LEDs will go out indicating that the unit is in standby mode Pressing and holding the RF button for one second brings the unit back out of standby mode Achieving a Video Link Once an RF connection has been successfully achieved then a video
13. Frames s CIF Video Lock Not currently supported Unit Address This is the unit address of the unit being controlled Software Version Status Only This status information describes the version of the software running the SOLO4 transmitter product FPGA Version Status Only This information is for domo engineering use only Serial Number Status Only This status information is the electronic serial number of the transmitter PCB This number can be exchanged with domo to purchase extra licensable features such as upgrades to support AES encryption Options Timeouts access to change timeouts used during the serial communications between the unit and the controller Engineering access to further diagnostic and calibration features Write License Code open box for entering license codes for the activation of licensable features e g AES scrambling in the transmitter Contact domo for support in applying new licenses as required Change RS232 address prompts the user to change the units RS232 address which can be useful when connecting multiple units together via a multi drop RS485 bus for control purposes Write AES Key opens a dialogue box for entering a 128bit and 256bit AES scrambling key as 32 ASCII hexadecimal characters 0 F Restore Defaults restores factory default settings in the transmitter File Change Logfile opens a standard Windows file save dialogue box which allows the
14. LEDs on the control panel light then the Receiver may be in standby mode If this is the case then press and hold the RF button for more than one second 15 7 5 2 7 5 3 7 5 4 7 5 5 Applying power to the LDR Link Transmitter When powering the LDR Link transmitter directly from a DC source the following will be observed If none of the LEDs on the control panel light then the transmitter may be in standby mode If this is the case then press and hold the RF button for more than one second One of the eight green configuration LEDs on the control panel will light which one depends on which configuration was active when the transmitter was switched off The alarm LED may be lit typically if there is a serious error with the unit video input lock alarm is not currently supported Switching on the RF On the transmitter unit control panel press the RF button briefly until the RF LED lights This indicates that the RF output is active and that the unit is transmitting If the receiver is able to receive the transmitted signal the receiver RF LED will light indicating receiver lock and the receiver ALARM LED should go out The signal strength LEDs will indicate the received signal quality Data and audio signals will be presented automatically at the receiver outputs NOTE The signal quality may be degraded if the units are placed too close together and the signal is too strong Move the units further apart
15. Users Manual LDR Link User Manual Cobham Surveillance Domo Products 11 Manor Court Barnes Wallis Road Segensworth Hampshire PO15 5TH England Version 1 4 T 44 0 1489 566 750 16 April 2009 F 44 0 1489 880 538 1 Table of Contents Table of Contents iis EE ESE ee EER ESE KRU DEER Ge SERE GR Ee De Ge Ee OES Se Ee aaie anian daia 2 IG MANGE History oe ie GE ee Ee VG AE ED ee ee ee eg be ee ve Le Ee EE 3 About this Manual issie esse Ese EEN eke Ee Dee Ekke ENG Ene EN sk Ee OES ee Geek ent sonden Eve ee 4 pi og OG og ge 5 Warranty and Support seerennnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnennnnnennnnnnnnnennennnnnnn 6 Warranty COVER OE EO EE EE EE EEEE 6 Safety Compliance and ApprovalS sesse ke ee REGEER Re ee ee ee Ee ee 7 Safe Operating Procedures esse ee ee ee ee ee ee ee ee RR RR ee ee ee ee ee ee RR RE ee ee ee 7 EMC Safety and Radio Approvals iss ee ee ese see ee ee ee ee ee RR ee ee ee ee ee ee RR Re ee 7 ME de EE EE N 7 Getting Started and Basic OperatiON se RR RR RR RR ER RE RE RE EE EE EE EE 8 Which Model do I have ees ee ee ee RR ee ee ee ee ee AR RE ee ee ee ee ee AAR EE ee ee ee 8 GOntrols AR RR OE EE OR ERa 9 Getting Started with the LDR Link Transmitter ees ee ee ee ee ee RR EG 10 Getting Started with the LDR Link Receive SysteM esse ee ee ee ee RR EG 12 Powering on the System ss ER EE ee Ee ee ee ee ee ee ee ee 15 Advanced Ope
16. ance Loss of data No Video No Decoder Lock displayed at Receiver Unstable Video Suggested Action Check a suitable transmitter RF transmitter is active both units on correct frequency and correct bandwidth settings with antennas connected Ensure there is no interfering signal Poor performance of the link can occur for the following reasons Interference Should an interfering RF signal occur on the same frequency the performance of the link will be affected Remove the interferer e or move to an alternative frequency Unsuitable antennas or out of band antennas See the antenna sections for guidance on antenna selection and use Reduced transmit power ensure that the attenuation setting on the transmitter is appropriate Receive antenna positioning were possible mount the receive antennas away from other objects unobstructed and away from any electronics likely to generate interference No Diversity operation Ensure both antennas are operational Check link performance data cables are in good condition and correct use of Xon Xoff flow control In discontinuous mode check Ton period is not too short Check RF Link is functioning see above Check video input is connected Check cable from LDR Link Receiver to PC is connected and is Data Cable Check correct Comm port is selected on StreamView software Indicates that the LDRL receiver can not see a valid stream from the LDRL tra
17. ce being controlled If the packet satisfies an address integrity check then the controlled device will action the command and send a reply For compatibility with modems an ASCII style protocol is used Ports are set for 9600 Baud 8 bits No parity 1 stop 13 14 Packet Structure Sending from PC ASCII Value STX 02h Start byte 0 9 30h 39h 4 byte unit address In range 0 9999 R 20h 7Eh 1 byte command type r read w write or m misc 20h 7E 1 byte indicator of internal data block ABC 20h 7Eh Command three byte mnemonic 3Bh Separator PQR 20h 7Eh Data Optional variable length 3Bh Separator X 20h 7Eh Sum Check ETX 03h End byte 35 13 15 Packet Structure Reply from controlled device ASCII Value STX 02h Start byte 0 9 30h 39h 4 byte unit address In range 0 9999 Z 20h 7Eh Status BYTE PQR 20h 7Eh Data Optional variable length 3Bh Separator X 20h 7Eh Sum Check ETX 03h End byte The Sum check byte is the summation of all bytes in the packet not including the start and end bytes Higher order bytes are ignored and the final byte result is modified to prevent ASCII control characters being sent Bit 7 highest is forced high Status byte will indicate command performed OK or indicate an error ASCII Meaning 1 All OK E General error Command could not be actioned Typically E will be returned if the message is formatted incorrectly separators in wrong place or if commands are in upper case or
18. during polling polling has been disabled 19 Changes can be made to the unit configuration using the drop down and data entry fields Changes are only applied to the unit when the Apply New Values button is clicked Current values as running in the unit can be read using the Refresh button Parameters that are status information only appear in greyed in the application Further engineering and configuration controls can be found within the Options and File drop down menus in the application title bars 20 8 2 LDR Link Transmitter Control Application 8 2 1 8 2 2 8 2 3 Important version 1 3 and above of the telemetry controller should be employed with the LDRL transmitter EJ LDRL transmitter control File Options Port sal v Connect Polling active Unit address 0002 Unit information Software version FPGA version Serial number Apply Refresh Save config Load config Save config set Load config set Modulation Output Unit parameters Modulator output TX duty cycle Modulator constellation Output frequency MHz Output power attenuation dB Modulator channel width Data enable Data baudrate Scrambling Audio encoder Audio input level Enable servo RC control Enable IP IP Data routing Gross bitrate kbits s Current config Line standard Resolution Frame rate Video lock Continuous v QPSK 458 5625 0 00 75KHz v
19. e SOLO4 Telemetry Transmitter and Receiver are controlled with the same application telemetry_ctrl exe which auto detects the type of unit it is connected to Note that exact file names may change as software version information is a part of domo file names A PC is required with two RS232 Serial COM ports to control both a transmitter and receiver simultaneously Where changes are to be made to either a transmitter or a receiver at different times a PC with a single RS232 Serial COM part can be used Installation the two control programs is as simple as copying them from the CD to a suitable location on the PC No install shield routine is launched Note that the controllers generate their own log and initialisation files so it is best to create a dedicated directory for these applications perhaps with links to the applications from the desktop of the PC Use the supplied cables to connect the chosen COM port s of the PC to unit s to be configured Launch each application in turn by double clicking or using the run command Connection with a SOLO4 Telemetry product should be automatic but the user can force selection of the correct COM port using the drop down followed by the Connect button Errors such as the following may appear during the connection process if the PC is unable to automatically ascertain which unit is connected to which COM port Error attempting to read invalid address Error has occurred
20. e ee RR ee ee ee ee ee RR EE ee 35 Packet Structure Sending from PO ees EEN GEE EER ER EE ER ek ERG GER GE Ee EE 35 Packet Structure Reply from controlled device esse ee ee ee ee RR RE Ee 36 Telemetry System Command List ee ee ee ee RR ee ee ee RR RE ee ee ee 37 Typical Ranges of the LDR Link Product rnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn 39 2 Change History Version Main Changes from Previous Version Edited By v1 0 Initial Release MB V1 1 Added comments to range tests MB V1 2 Added LDR Receiver removed support for MB Stream view software decoder V1 3 Added connector types MB V1 4 Correct error on data pin out MB 3 About this Manual This manual describes the operation of domo LDRLink Low Data Rate Link wireless system The manual is divided into three main sections Getting started and basic operation This section describes to users how to deploy and use a LDR Link system Advanced operation This section describes the operation of the system in more detail concentrating particularly on how to store and recall configurations with use of the PC Controller Application Technical reference This section provides technical specification and control protocol data and will be of interest to those integrating the LDR Link system into larger systems 4 Introduction This document constitutes the handbook for the LDR Link transmitter product and the StreamView PC viewing applicati
21. ection The LDR Link unit can be powered from either a nominal 12V DC supply or from an external battery Connect the 3 pin Amphenol cable to the connector labeled DC IN taking care to align the connectors Connect the banana connectors on the other end of the cable to a suitable DC source The 12V DC input has the following characteristics Input Voltage Range 6V to 16V reverse voltage protected Power dissipation lt 3 5W domo can supply optional AC to DC converter blocks to power the LDR Link units please contact domo if these are required If the unit is in standby press and hold down the RF button to power up the unit Control Connections The 7 way Amphenol connection is used for control interfacing 11 7 3 4 Video 7 3 5 7 3 6 7 4 1 The control cable is used for Control and is used to connect the LDR Link unit to a PC with a suitable RS232 control interface for connection to the domo PC GUI application or an embedded control application Connect the video input to the Amphenol connector labeled Video In Connector Signal Video BNC on cable 75 ohm composite video source PAL or NTSC software selectable Typically the video source will be a small colour or black and white CCD camera Antennas The unit is supplied with 868MHz or 458MHz omni directional flexible antennas as standard These should be screwed directly to the panel mount TNC RF Out connector Care should be taken to not over
22. ector Care should be taken to not over tighten the antenna It is recommended that the transmit antenna should be connected directly to the unit and not via a cable Any cable in this position will reduce the range performance of the equipment Important Note The supplied antennas are dipole antennas and do not require a ground plane Users might wish to use other antennas such as directional antennas for greater range Additional antennas may be ordered from domo For longer range more specialized antennas such as Yagis can be supplied Installation notes The domo LDR Link receiver is supplied in a rugged chassis with mounting holes for ease of integration Itis designed for simple integration into any system The LDR Link receiver can be mounted in an outdoor situation In an outdoor situation care should be taken to mount the unit with the connectors pointing downwards The cable connectors must be protected by the drip ledge 7 5 Powering on the System 1 61 All external connections to the LDR Link System should be made as described in the previous sections before proceeding to power on the system Applying power to the LDR Link Receiver On powering the LDR Link receiver one of the eight green configuration LEDs on the control panel will light which one depends on which configuration was active when the receiver was switched off The red Alarm LED may light if the receiver is unable to lock to a signal If none of the
23. inputs Enable RC servo control Enables the 2 channel joystick and servo interfaces Not applicable to LDR Link IP Enable Enables the IP interface for the Netstream unit Not applicable to LDR Link IP Data Routing The IP data routing can be set to allow the IP pipe to use the RS232 data input on the Telemetry unit default is RS232 data pipe Alternatively the IP data between the Netstream and the Telemetry unit can use the TTL interface Not applicable to LDR Link Gross Bit Rate Status Only This give an indication of the channel bit rate available This can be useful in calculating data throughput Current Config This field reports the last loaded configuration number Note that for the SOLO transmitter changes applied after the configuration has been loaded are saved immediately into the current configuration Line Standard Auto detected video line standard on the LDR Transmitter PAL or NTSC Resolution and Frame Rate The LDR system is a very low bitrate system and sends informational quality video The LDR system can be optimized by users to send different video frame rates and resolutions Frame Rate Options 2 5 or 12 F s Resolution Options CIF 352 288 pixels or QCIF 176 144 pixels Typically domo recommends the following settings 50KHz Bandwidth 2 Frames s CIF 23 8 2 19 8 2 20 8 2 21 8 2 22 8 2 23 8 2 24 8 2 25 75 and 100KHz Bandwidth 5 Frames s CIF 125KHz Bandwidth 12
24. kbits s default 38K4 baud of video 58 kbits s 38K4 baud of video 73 kbits s 56K6 baud of video Not Supported Not Supported Not Supported Not Supported Not Supported Not Supported Not Supported 458MHz or 868 870MHz ISM Default QPSK 1 16 Guard 105 carrier OFDM QPSK 16QAM 1 16 guard Channel Spacing Default 75KHz 25 50 75 100 125 300KHz Channel Bandwidth 20 40 60 80 100 240KHz Maximum output power 100mW Power Supply Voltage 5 5 18V Power dissipation lt 3W RS232 data rates 1200 2400 4800 9600 19200 38400 57600 115200 RS232 parity None Even Odd with Xon Xoff flow control where necessary Video Default 5 frames per second 30kb s 352 288 32 Operating Frequency Modulation Channel Spacing Antenna Input sensitivity Image rejection Adjacent channel rejection Error correction detection Power Supply Voltage Power dissipation RS232 data rates RS232 parity Frame Rate 12 or 5 or 2 frames s Resolution 352 288 or 176 144 11 9 LDR Link Telemetry Receiver 458MHz or 868 870MHz ISM Default QPSK 105 carrier OFDM QPSK 16QAM 1 16 guard Default 75KHz 25 50 75 100 125KHz and 150 175 200 225 250 275 300KHz with wider IF filter 2 way diversity MRC lt 113dBm 100KHz 16QAM 118dBm 100KHz QPSK 121dBmQ50KHz gt 52dB 10 7MHz IF Hi Side LO gt 45dB 2112 bit rate soft LDPC 968 1056 BCH 5 5 18V lt 3W Default 38k4 1200 2400 4800 9600 19200 38400 57600
25. ly This field shows the presence of audio in the system Not applicable to LDRL Audio Headphone Level This allows the user to adjust the audio output level in the receiver The nominal level is set to OdB Not applicable to LDRL IP status This field indicates the presence of IP data on the link Not applicable to LDRL Data Routing The IP data routing can be set to allow the IP pipe to use the RS232 data input on the Telemetry unit default is RS232 data pipe Alternatively the IP data between the Netstream and the Telemetry unit can use the TTL interface Current Config This field reports the last loaded configuration number Note that for the SOLO transmitter changes applied after the configuration has been loaded are saved immediately into the current configuration Line Standard The LDRL decoder does not auto detect line standard therefore this needs to be set to reflect the input camera line standard either PAL or NTSC Decoder Lock This information field indicates the status of the MPEG4 decoder it should be locked for normal operation Unit Address This is the unit address of the unit being controlled 27 8 3 22 8 3 23 8 3 24 8 3 25 8 3 26 Software Version Status Only This status information describes the version of the software running the SOLO4 transmitter product FPGA Version Status Only This information is for domo engineering use only Serial Number Status Only This s
26. mo on the customer s behalf Please contact domo for details of packages that can be tailored to meet your individual needs whether they are service availability technical training local geographic support or dedicated spares holdings 6 Safety Compliance and Approvals 6 1 Safe Operating Procedures Ensure that the power supply arrangements are adequate to meet the stated requirements of each LDRLink product Operate within the environmental limits specified for the product Do not subject the indoor equipment to splashing or dripping liquids Only authorized trained personnel should open the product There are no functions that required the User to gain access to the interior of the product 6 2 EMC Safety and Radio Approvals The equipment has been designed to meet and has been tested against the following harmonized EMC and safety standards EN 301 489 1 amp EN 301 489 5 EN 61000 3 2 2000 EN 61000 3 3 1995 EN 55022 1998 Class B EN 61000 4 2 1995 EN 61000 4 3 1996 EN 61000 4 4 1995 EN 61000 4 5 1995 EN 61000 4 6 1996 EN 61000 4 11 1994 EN 60950 2000 6 3 CE marking The CE mark is affixed to the LDRLink product and the CE Declaration of Conformity as well as the technical file are available on request 7 Getting Started and Basic Operation 7 1 Which Model do I have Each unit in the domo SOLO4 product range is marked with two panels e Product Code Panel Give
27. nsmitter Check that RF lock has been achieved see above Check that the camera is connected Check the LDRL decoder line standard matches the camera PAL NTSC 30 10 LED Indicators 10 5 LDR Link TX LED Condition Red ALARM LED lit permanently RF LED blinking RF LED lit RF LED not lit Single CONFIG LED lit Front Panel Lock RF Bar Graph No LEDs lit 10 6 LDR Link RX LED Condition Red ALARM LED lit permanently RF LED off RF LED on Single CONFIG LED lit Front Panel Lock RF Bar Graph No LEDs lit 31 Meaning Unit is faulty incorrect software loaded Unit in discontinuous mode RF inactive RF must be continuous for LDRL RF output active RF output inactive Indicates selected config Indicates front panel locked RF output level Unit in standby or Off Meaning Unit is faulty incorrect software loaded No RF signal lock RF signal lock Indicates selected config Indicates front panel locked RF signal quality Unit in standby or Off 11 Technical Specifications 11 7 Bandwidths and Bitrates Channel Channel Spacing Bandwidth 25 kHz 20 kHz 50 kHz 40 kHz 75 kHz default 60 kHz 100 kHz 80 kHz 125 kHz 100 kHz 150 kHz 120 kHz 175 kHz 140 kHz 200 kHz 160 kHz 225 kHz 180 kHz 250 kHz 200 kHz 275 kHz 220 kHz 300 kHz 240 kHz 11 8 SOLO4 Telemetry Transmitter Operating Frequency Modulation User Bitrate QPSK Not Supported 29 kbits s 19K2 baud of video 44
28. nteger Integer Integer Integer Integer Integer Integer Integer Hex Hex 37 Comments 9999 broadcast address 1 restore defaults 0 active 1 sleep mode 1 8 config bit0 0 Tx bit 0 1 Rx 1 allow remote commands 0 off 0 unlocked 1 locked 0 disabled 1 enabled 9600 baud 0 Off 1 On 0 QPSK 1 16QAM 0 Continuous 1 Discontinuous operation MHz dB 1 25KHZz 5 125KHz Kbits s MHz MHz dB Timeout before data is sent in discontinuous mode Timeout before Tx turns off in discontinuous mode 0x10 0x17 0 off 1 no parity 2 even parity 3 odd parity 0 1200 2400 4800 9600 19200 38400 57600 115200 0x28 0x2f MHz 1 25KHz 5 125 KHz 0 high gain 1 low gain 0 No 1 Yes dB dB dB dB 0 is good 0 QPSK 1 16QAM 0x10 0x17 0 None 1 no parity 2 even parity 3 odd parity 0 1200 2400 4800 9600 19200 384 57600 115200 0x28 0x2f 0 Off 4 AES128 5 AES128 6 AES256 7 AES256 32 digit hex key 32 digit hex key Default 2 tx 3 rx 0 0 or 869 45 or 4 868 870 0x28 869 45 4 0 0x10 0x28 apid aenc alev athr rpid raud rvol ppid ppen qpid ipid ipen jpid jinp irou Tx Audio PID Tx Audio encoding mode Tx Audio input level Tx Audio threshold level Tx Rx Audio PID Rx Audio status Rx Audio headphone level Rx Tx RC PID Tx Enable Tx RC control Tx Rx RC PID Rx Tx IP PID Tx Enable Tx
29. on This Handbook should be read in conjuction with the SOLO4 Telemetry Handbook for a complete system view The domo LDR Low Data Rate transmitter is a digital video transmitter designed to operate over very long ranges The LDR transmitter sends informational quality video at reduced frame rates compressed to very low data rates typically 30kb s This high level of compression and reduced data rate mean that the LDR transmitter can send images over very long distances The LDR transmitter occupies as little as 50KHz of bandwidth and can therefore be used more easily at UHF frequencies Housed in a robust water sealed enclosure and consuming only 3W the LDR transmitter is ideal for long term out door deployments Security is ensured with optional AES128 256 bit encryption The LDR transmitter is available in a variety of frequency bands from 300MHz to 1GHZ other frequencies are available on request The LDR transmitter will transmit images in a non line of sight environment up to 2km and line of sight to 20km depending on mode and frequency further range can be achieved with the optional clip on booster PA LDR transmisions are received using the domo LDR receiver IMPORTANT NOTE The LDR Link product range has been specifically designed for government security and law enforcement users the equipment will tune across frequencies that are only available to licensed government users Non government users should employ the equi
30. pment restricted to the license exempt bands only typically 868 870MHz amp 458MHz 5 Warranty and Support 5 1 Warranty Cover domo offers a 12 month standard product warranty During this period should the customer encounter a fault with the equipment we recommend the following course of action Check the support section of the website for information on that product and any software firmware upgrades If fault persists Call our support line and report the fault If fault persists and you are informed to return the product please obtain an RMA number from the domo support department and ship the equipment with the RMA number displayed and a description of the fault Please email the support section the airway bill consignment number for tracking purposes If you have extended warranty provisions then domo will send an immediate advance replacement to you Under most circumstances this must be returned once the fault item is repaired Depending on the nature of the fault domo endeavor to repair the equipment and return it to the customer within 14 days of the item arriving at our workshops Obviously it is impossible to cater for all types of faults and to manage 100 replacement part availability and delays are sometimes inevitable This is why domo recommend that its customers take out an extended warranty which includes advanced replacement of faulty items and or hold a basic level of spare parts which can be held by do
31. ration i s SEE KERE ERG SERE E RE Ke RS EVER RU Ke BR ele SG ENE kankeknn 18 Technical Overvie W ie ee ee ee ee ee RR RR ee ee ee ee ee RR RR ee ee ee ee ee RR RE ee ee ee 18 SOLO4 System PC Controller Application Software iss ee ee ee ee ee 19 LDR Link Transmitter Control Application ee ee ee ee ee ee ee ee RE Ee 21 LDR Link Receiver Control Application ee ee ee RR ee ee ee RR RE ee 25 Fault FINdING EE EE EE EE N ADENA na USEE EENE 30 Fault Symptoms EE NE N N N EE EE N NE EE N 30 LED Indicators EE EE OE OE EE tee deces 31 UDR WINK SPAR N EE OE EE 31 de AU di EE ER EE EE E 31 Technical Specifications re SERE ER GEOES ER EG EE ER RENE SERE GEES ER KEER RE EES EE NEER EE 32 Bandwidths and Bitrates iese ee eek ee ee ee ee RR ee ee ee ee eek ee ee ee ee 32 SOLO4 Telemetry Transmitter ees ee ee ee ee RR ee ee ee ee ee RR ee ee ee 32 LDR Link Telemetry Receiver iese ees ee ee ee ee eek ee ee ee Re ee ee RR ee ee ee ee ee 33 Connector Pin Outs ese ees erence cence EE EE Re ee ee ee ee GARAGE EE ee 34 LDR TX and RX Power Amphenol iss ee ee eek ee ee ee ee ee RR ee ee ee ee 34 LDR TX and RX Control Amphenol ies ee ee ee RR ee ee ee ee ee RR RE ee 34 LDR TX and RX Video Amphenol 0 ccccceeeeeeeeeeeeeeeeaeeeeeeeeeeeeeeeaaes 34 Control Protocols i EE EE SEEN SERE Roe ees KEER Rees eds ENE w ek ke we ie ees En Ke eie 35 RS232 Control General Principles is ee e
32. re applicable Demodulator Constellation Status Only This field displays the COFDM constellation that is being demodulated at the receiver In normal operation this will match that selected at the transmitter 25 8 3 4 8 3 5 8 3 6 8 3 7 8 3 8 8 3 9 8 3 10 BET 8 3 12 8 3 13 Input LNA gain This allows selection of the input gain at the front end of the demodulator Low gain mode improves the blocking on the input by about 10dB but has a similar reduction on sensitivity Demod Lock Status Status Only This indicates whether the demodulators are successfully locked to the RF signal Input SNR Status Only For each IF input the SNR Signal to Noise Ratio is reported Values in the order of 18dB to 22dB represent strong received signals whilst values in the order of 5dB represent poor received signals which will likely give rise to decoding errors Input Level Status Only This figure indicates the received signal level at the two receiver inputs Normal Operation will occur when the input level is between 25 and 115 dBm Signals greater than 25 may be too powerful and cause damage Signal less than 115dBm may be too weak and cause data loss typical link failure will occur between 118dBm depending on mode The input level may also increase when the antennas are connected and there is no transmission This indicates the presence of interference BER Pre LDPC Status Only This is
33. re defaults License code Sleep Config number Unit Type Set remote command Front panel lock Enable status display Modulator output Modulator constellation TX duty cycle Output frequency Output power attenuation Modulator Channel Width Gross TX bit rate Minimum operating frequency Maximum operating frequency Power level calibration level TX on timeout TX off timeout Tx Data PID Tx Data Enable Tx Data Baudrate Tx Aux Control PID Input Frequency Demodulator Channel Width Input LNA gain Demod Lock Demod SNR A Demod SNR B Input level A Input level B Pre LDPC error rate Post LDPC error rate Packet error rate Demodulator constellation Rx Data PID Rx Data Status Rx Data Baudrate Rx Aux Control PID Scrambling mode 128AES 256AES lower key 256AES upper key Tx Rx RW TxRx RW TxRx R TxRx R TxRx R TxRx W TxRx W TxRx RW TxRx RW TxRx R Tx RW TxRx RW Rx RW Tx RW Tx RW Tx RW Tx RW Tx RW Tx RW Tx R TxRx RW TxRx RW Tx RW Tx RW Tx RW Tx RW Tx RW Tx RW Tx RW Rx RW Rx RW Rx RW Rx R Rx R Rx R Rx R Rx R Rx R Rx R Rx R Rx R Rx RW Rx R Rx R Rx RW TxRx RW TxRx W TxRx W Type Integer Hex String Hex Integer Hex Integer Integer Integer Integer Integer Integer Integer Integer Integer Float Float Integer Float Float Float Float Integer Integer Integer Integer Integer Integer Float Integer Integer Integer Float Float Float Float Integer I
34. s control the user can select whether the transmitter passes serial RS232 data across the RF link to the receiver A choice of no parity even amp odd parity is selectable Data Baud Rate In LDRL mode this field is for information only Bandwidth 50KHz Baudrate 19K2 Bandwidth 75KHz Baudrate 38K4 Bandwidth 100KHz Baudrate 38K4 Bandwidth 125KHz Baudrate 56K6 Scrambling If the AES scrambling option has been purchased for the SOLO4 Telemetry system in use then it is possible to encrypt the link Scrambling must be enabled at the transmitter by selecting either AES128 or AES 256 in the scrambling field At this point the user will need to ensure that the correct key is in use and this is done by using Options Write AES Key The key is a 128bit key for AES128 and a 256bit key for AES256 and is entered as either 32 or 64 ASCII hexadecimal characters 0 F Audio Encoder The Audio can be enabled with this control Audio is off by default and there are 2 mono modes available to the user 24Kbits s toll quality and 32Kbits s telephone quality may be selected both at 8KHz sampling rate Some bit rates will not support audio Should be OFF 22 8 2 11 8 2 12 8 2 13 8 2 14 8 2 15 8 2 16 8 2 17 8 2 18 Audio Input Level This control is used to define the audio gain to be applied to the audio input signal 0dB is used for line level audio and various options up to 48dB of gain can be applied for microphone
35. s the input signal level the signal to noise ratio and raw error rates via the remote control interface Video Compression The LDR Link operates a sophisticated MPEG4 encoder operating at very low bitrates The encoder is capable of operating in two resolutions 352 288 or 176 144 and at different frame rates 12 5 or 2 frames per second The unit is defaulted to 352 288 at 5 frames per second AES Encryption The LDR Link module supports both AES128 and AES256 encryption These provide a very secure method of handling data and audio Both AES128 and AES256 are licensable features To enable encryption a 32 digit hex key or in the case of AES256 two 32 digit hex keys must be written to the unit The scrambling mode must then be set to the appropriate mode of operation The AES128 and AES256 options in the receiver can be used to prevent the receiver accepting unscrambled streams which may be useful in some applications Note that having mismatched keys between Tx and Rx may allow a small amount of encrypted data to pass through the data pipes AES128 and AES256 are licensable features and are only supported in certain countries 18 8 1 SOLO4 System PC Controller Application Software Advanced control of the SOLO4 system is available by using PC control applications Typically users may want to customize the default configurations to control settings such as frequency scrambling keys modulation parameters etc Both th
36. tatus information is the electronic serial number of the transmitter PCB This number can be exchanged with domo to purchase extra licensable features such as upgrades to support AES encryption Options Timeouts access to change timeouts used during the serial communications between the unit and the controller Engineering access to further diagnostic and calibration features Write License Code open box for entering license codes for the activation of licensable features e g AES scrambling in the transmitter Contact domo for support in applying new licenses as required Change RS232 address prompts the user to change the units RS232 address which can be useful when connecting multiple units together via a multi drop RS485 bus for control purposes Write AES Key opens a dialogue box for entering a 128bit and 256bit AES scrambling key as 32 ASCII hexadecimal characters 0 F Restore Defaults restores factory default settings in the transmitter Polling Enabled selecting this option makes the control application automatically refresh the data presented to the user every few seconds File Change Logfile opens a standard Windows file save dialogue box which allows the user to change the path and name of the log file generated by the application Exit exits the SOLO4 receiver control application 28 29 9 Fault Finding 9 4 Fault Symptoms Symptom No RF Link Poor link perform
37. the raw error rate prior to the error correction techniques having been applied in the receiver BER Post LDPC Status Only This is the error rate before the BCH decoder Packet Error Rate Status Only This is a measure of the number of un correctable errors in the system Any value other than 0 with cause loss of data break up of audio and is a good indication of link failure Data Status Status Only This field shows the presence of data in the system by indicating the parity of the data or none if no data is present Data Baud Rate Status Only This field reports the baud rate of the RS232 serial data component that is present and selected in the stream Scrambling If the AES scrambling option has been purchased for the SOLO4 system in use then it is possible to encrypt the link Descrambling must also be enabled at the receiver by selecting AES128 or AES256 in the descrambling field At 26 8 3 14 8 3 15 8 3 16 8 3 17 8 3 18 8 3 19 8 3 20 8 3 21 this point the user will need to ensure that the correct key is in use at the receiver and this is done by selecting Options Write AES Key in the receiver controller The key is a 128bit value for AES128 and a 256bit value for AES256 and is entered as 32 or 64 ASCII hexadecimal characters 0 F The AES128 and AES256 modes prevent clear streams from passing through the system which can be useful in certain applications Audio Status Status On
38. tighten the antenna It is recommended that the transmit antenna should be connected directly to the unit and not via a cable Any cable in this position will reduce the range performance of the equipment Important Note The supplied antennas are dipole antennas and do not require a ground plane Users might wish to use other antennas such as directional antennas for greater range Additional antennas may be ordered from domo For longer range more specialized antennas such as Yagis can be supplied Installation notes The domo LDR Link transmitter is supplied in a rugged chassis with mounting holes for ease of integration It is designed for simple integration into any system The LDR Link transmitter can be mounted in an outdoor situation In an outdoor situation care should be taken to mount the unit with the connectors pointing downwards The cable connectors must be protected by the drip ledge 7 4 Getting Started with the LDR Link Receive System Cables and Connections This section describes how to connect the following domo model numbers 12 LDRRX 086087 LDRRX 045045 The picture below shows the domo LDR Link receiver The domo LDR Link receiver is supplied with the following cables Control Cable 2m DC Power 2m Video input Cable 2m The domo LDR Link receiver should be connected as shown below 13 Antenna Connected as Connect to video shown Connect to PC for monitor onnect to DC power
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