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Avalon RF, Inc. • 344 Coogan Way • El Cajon, CA 92020

Phone: (619) 401-1969 • Fax: (619) 401-1971 • Email:

[email protected]

OTX627

COFDM Digital Video Transmitter

User's Guide & Operating Manual

REV. A – 14 Jan 2009

http://www.avalonrf.com/

Содержание OTX627

Страница 1: ...RF Inc 344 Coogan Way El Cajon CA 92020 Phone 619 401 1969 Fax 619 401 1971 Email sales avalonrf com OTX627 COFDM Digital Video Transmitter User s Guide Operating Manual REV A 14 Jan 2009 http www avalonrf com ...

Страница 2: ...AVALON RF INC Page ii OTX627 Series User s Guide Operating Manual ...

Страница 3: ...dio Specifications 5 Meta Data Telemetry User Data Option 6 Control Interface 6 Power 6 Connector Interface 6 Physical 6 User Interface 7 Setup 7 Electrical Interface 7 Table 2 Current Consumption 8 Interconnecting 10 Figure C Power 10 Figure D Video 10 Figure E Audio 11 Figure F Data Programming Input 11 Mounting 12 Mechanical Data 12 Figure G OTX Series Mechanical Outline 13 Environmental Condit...

Страница 4: ...f 2 05GHz 2 5GHz for defense or licensed users only The transmitter carries video stereo audio data over the wireless link The data channel can be used for telemetry in UAV applications Some models have dual video inputs that can be used conveniently with standard night vision cameras This is particularly useful for robotic UAV applications All transmitters offer the following features A single br...

Страница 5: ...s User s Guide Operating Manual 1 5 3 2 4 Figure A OTX Series Controls and Connectors Top View 1 Main Antenna Bottom View 2 Power Video Input see Figure C 3 Data Input see Figures F 4 Video Input see Figure D 5 Audio Input see Figure E ...

Страница 6: ...e 3 OTX627 Series User s Guide Operating Manual 10 9 7 8 6 Figure A OTX Series Controls and Connectors contd Side Views 6 Power Switch 7 Power LED Indicator 8 Status Indicator 9 RF Power Switch 10 Channel Select Switch ...

Страница 7: ...ital meta data with the video The standard baud rate is 38 4K with a 8N1 format 1 4 Talk Back Audio Channel optional The talk back audio channel allows the transmit side e g camera operator on the transmit side to receive instructions from the operator at the receiver s side It drives an earpiece or the output can be used with a PA system 1 4 Two Way Wireless Digital Link WDL optional The WDL serv...

Страница 8: ...50 MHz 2 7 GHz Modulation COFDM Channel BW 6 7 or 8 MHz No of Channels 16 channel capability Modulation QPSK FEC 1 2 2 3 Guard interval 1 32 1 16 Video Specifications Video Standard NTSC or PAL Video Input Composite or Y C Video Compression MPEG 2 Main profile Main Level I P and B frames supported Video Resolutions Full D1 720 x 486 NTSC 720 x 576 PAL 30 fps CIF or DVD Bit Rate 4 8 Mb s depending ...

Страница 9: ... Frequency list of Channels through GUI SID system ID settable for each channel Power Input 12V nominal 9 20V DC Unregulated Consumption 6W typical max Output power of 27 dBm Connector Interface RF Output SMA f 50 ohm I O Connectors Power 4 pin Lemo Video BNC f for single video unit 2 x Mini BNC f for 2 video input unit Audio 5 pin Lemo Data Control 7 pin Lemo Physical Dimensions Approx 3 5 x 4 5 ...

Страница 10: ...option allows the receiver operator to communicate with the transmitter operator via a headset that includes an earpiece and a microphone when the transmitter is on air 2 2 Setup The OTX series transmitters have the following setups a RF Channel b Output Power Level 2 3 Electrical Interface The transmitter has the following interfaces 2 3 1 Power Input a The transmitter requires 9 20V dc The power...

Страница 11: ... Current OTX627 27 dBm 0 5W Approx 600mA OTX627 23 5 dBm 200 mW Approx 450mA OTX627 20 dBm 100 mW Approx 350mA Table 2 Current Consumption Addition of option 11 WDL will increase the current draw by a maximum of 170mA 2 3 2 Video Input a The video input accepts RS170 CCIR NTSC or PAL signals The type of video input is set through the GUI provided b Input signal is composite video 1Vp p with a nega...

Страница 12: ...supported Half Duplex RS485 compatible serial interface 2 3 6 Main RF output to antenna The main RF output connector is a 50 Ω Ω Ω Ω ohm female SMA receptacle 2 3 7 Wireless Digital Link WDL RF output The WDL RF output is via a 50 Ω ohm BNC connector Maximum output power is 24 dBm 0 25W The main RF and the WDL RF outputs are identical on all the transmitter versions ...

Страница 13: ...following connectors 2 4 1 a Power Input Pin Number Function 1 Power Return 2 3 4 Power Input Figure C Power b Video Input Depending on the model there is provision for 1 or 2 video input signals In case of the single video input the connector is a 75 Ω Ω Ω Ω ohm BNC while the 2 video inputs style has a 75 Ω Ω Ω Ω ohm Mini BNC connector Figure D Video ...

Страница 14: ...udio Return 2 Audio L Input 3 Audio R Input 4 Audio R Input 5 Audio L Input Figure E Audio d Data Programming Input Pin Number Function 1 Data GND Return 2 Program Signal 1 DO NOT CONNECT USE 3 Program Signal 2 DO NOT CONNECT USE 4 5 RS232 In 6 RS232 Out 7 Data GND Return Figure F Data Programming Input ...

Страница 15: ...t us for details The transmitter is designed for convection free air flow cooling and no forced air cooling such as a fan is necessary The user should simply take care to provide room for proper airflow The unit can be mounted on any side but it should not be sandwiched between other equipment Another precaution to take when installing is to make sure there is no source of strong electro magnetic ...

Страница 16: ...AVALON RF INC Page 13 OTX627 Series User s Guide Operating Manual Figure G OTX Series Mechanical Outline ...

Страница 17: ...ronmental conditions 2 6 1 Operating temperature 4 to 122 F 20 to 50 C 2 6 2 Storage temperature 13 to 150 F 25 to 65 C 2 6 3 Vibration 1 5G from 10Hz to 2KHz sine wave 3 axis 2 6 4 Shock 15G 25msec half sine wave three axis 2 6 5 Humidity 5 to 95 non condensing 2 6 6 Inclination Any 2 6 7 Altitude 1500 feet to 15 000 feet 450 meter to 4 500 meters ...

Страница 18: ...on b Channel select The unit has a 16 channel capability The channels are pre configured in the ISM band except for defense or export units with the most optimum settings but can be changed by the user authorized user s only The channel selection is through a 16 position rotary switch numbered in hexadecimal format 0 through F In hexadecimal notation A stands for 10 B for 11 and so on c RF Power S...

Страница 19: ...sfer data voice in the reverse direction It is a narrow band UHF link operating in the low UHF license free band Following are the characteristics a VOICE Voice is transmitted from the receiver ODX side to the Transmitter side OTX side It is implemented as a digital wireless microphone and only the headset microphone is used on the ODX side only the earpiece is used on the OTX side The microphone ...

Страница 20: ...ain applications need a different placement As an example to transmit between floors in a high rise building the transmit receive antennas can be small directional high gain panel antennas mounted horizontally directly looking at each other Circular polarized antennas are more expensive but give a far better performance especially in mobile applications For proper operation of the wireless link th...

Страница 21: ...is operated in a mobile environment such as on a camera and the user should mount the transmitter in a way that does not defeat the purpose of this cable If the transmitter is mounted in a manner other than intended with the extender cable it SHALL be the user s responsibility to ensure the above minimum distance from any human being Avalon RF will help advise you if necessary If the antenna you r...

Страница 22: ... the replacement part Warranty covers parts and labor The warranty period is assumed to be 1 Calendar year unless otherwise specified on invoice The warranty does not cover failure due to acts of God failure caused by power outages by the power company or failure caused by third party components This includes but not limited to earthquakes flood electrical storms power or transformer failure and o...

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