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Avalon RF OTX627 User's Manual & Operating Manual

Cofdm digital video transmitter
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OTX627
COFDM Digital Video Transmitter
User's Guide & Operating Manual
REV. A – 14 Jan 2009
http://www.avalonrf.com/
Avalon RF, Inc. • 344 Coogan Way • El Cajon, CA 92020
Phone: (619) 401-1969 • Fax: (619) 401-1971 • Email:
sales@avalonrf.com

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  • Page 1 OTX627 COFDM Digital Video Transmitter User's Guide & Operating Manual REV. A – 14 Jan 2009 http://www.avalonrf.com/ Avalon RF, Inc. • 344 Coogan Way • El Cajon, CA 92020 Phone: (619) 401-1969 • Fax: (619) 401-1971 • Email: sales@avalonrf.com...
  • Page 2 AVALON RF, INC. Page ii OTX627 Series User’s Guide & Operating Manual...

  • Page 3: Table Of Contents

    AVALON RF, INC. Page iii OTX627 Series User’s Guide & Operating Manual Table of Contents General ....................1 Figure A – OTX Series Controls and Connectors.........3 Video ....................4 Audio ....................4 Meta Data ....................4 Talk Back Audio Channel (Optional) ............4 Two Way Digital Data Link (DDL) (Optional) ........4 RF Outputs ..................4...

  • Page 4: General

    AVALON RF, INC. Page 1 OTX627 Series User’s Guide & Operating Manual General The OTX series rugged transmitters are intended for use in military, homeland security, mobile security, broadcast and motion picture production. The OTX Series is a digital video transmitter using COFDM for robust wireless video.
  • Page 5 AVALON RF, INC. Page 2 OTX627 Series User’s Guide & Operating Manual Top View Main Antenna Bottom View Power/Video Input – see Figure C Data Input – see Figures F Video Input – see Figure D Audio Input – see Figure E...
  • Page 6 AVALON RF, INC. Page 3 OTX627 Series User’s Guide & Operating Manual Side Views Power Switch Power LED Indicator Status Indicator RF Power Switch Channel Select Switch Figure A – OTX Series Controls and Connectors (contd)

  • Page 7: Video

    AVALON RF, INC. Page 4 OTX627 Series User’s Guide & Operating Manual Video. Depending on the model, the unit features either 1 or 2 video inputs. The video inputs are standard 75 ohm impedance and accept composite video with negative sync tips.

  • Page 8: Specifications & Interfaces

    AVALON RF, INC. Page 5 OTX627 Series User’s Guide & Operating Manual Specifications & Interfaces RF Specifications RF Output: +27 dBm max. (3 selectable power levels) RF Impedance: 50 ohms Frequency Range: ISM bands - 900 MHz (902-928 MHz) 2.4 GHz (2.40 – 2.483 GHz) Other frequency bands available in UHF, L band &...

  • Page 9: Meta Data (Telemetry/User Data) (Option)

    AVALON RF, INC. Page 6 OTX627 Series User’s Guide & Operating Manual Meta Data (Telemetry/User Data) (Option) Data Interface: RS232C, 8N1 setting Baud Rate: 38.4K Control Interface Interface: RS232C, 8N1 Baud Rate: upto 38.4K Usage: User loadable Frequency list of Channels through GUI;...

  • Page 10: User Interface

    AVALON RF, INC. Page 7 OTX627 Series User’s Guide & Operating Manual User Interface. a) On/Off Switch. The OTX series transmitters have a electronic on/off switch. The switch must be held pressed for at least 3 sec to turn the unit on or off.
  • Page 11 AVALON RF, INC. Page 8 OTX627 Series User’s Guide & Operating Manual The input is electronically switched and protected against reverse polarity. There is also a ‘under-voltage lockout’ mechanism which ensures that there is at least the minimum operating voltage present to turn on the transmitter. In case the input voltage is lower than the minimum, the transmitter will not turn on.
  • Page 12 AVALON RF, INC. Page 9 OTX627 Series User’s Guide & Operating Manual 2.3.5 Two Way Wireless Digital Link (WDL) (Option 11) The WDL is a 9.6KBaud (standard, other Baud rates are supported) Half-Duplex RS485 compatible serial interface. 2.3.6 Main RF output to antenna.

  • Page 13: Interconnecting

    AVALON RF, INC. Page 10 OTX627 Series User’s Guide & Operating Manual Interconnecting. All interfaces to/from the transmitter are available through the following connectors: 2.4.1 a) Power Input. Function Number Power Return (-) Power Input (+) Figure C – Power b) Video Input.
  • Page 14 AVALON RF, INC. Page 11 OTX627 Series User’s Guide & Operating Manual c) Audio Input. Function Number Audio Return Audio L + Input Audio R + Input Audio R - Input Audio L - Input Figure E – Audio d) Data/Programming Input.

  • Page 15: 2.5.1 Mounting

    2.5.1 Mounting. Clamping (or hard mounting) is the only method of mounting advised for all fixed installations. Avalon RF has a special mounting plate available. Please ask for details. For mobile camera usage, Anton Bauer mounting is also available at extra cost.
  • Page 16 AVALON RF, INC. Page 13 OTX627 Series User’s Guide & Operating Manual Figure G – OTX Series Mechanical Outline...

  • Page 17: Environmental Conditions

    AVALON RF, INC. Page 14 OTX627 Series User’s Guide & Operating Manual Environmental Conditions. The OTX Series is designed to meet the following environmental conditions: 2.6.1 Operating temperature -4° to 122° F -20° to 50° C 2.6.2 Storage temperature -13° to 150° F -25°...

  • Page 18: Operating The Transmitter

    Each lower setting is 3 dB (1/2) less rf power. As an example, for the OTX627, settings 7,8 & 9 will have the full +27 dBm (0.5W), setting 6 will be +24 dBm (0.25W) & so The user is advised to use the lowest power setting &...
  • Page 19 AVALON RF, INC. Page 16 OTX627 Series User’s Guide & Operating Manual d) Power LED The power led is red & when lit, indicates the transmitter is on. e) Status LED This led is green during normal operation & yellow during programming/ set-up.

  • Page 20: General Guidelines

    (indoors or outdoors, presence of nearby objects like trees, bridges, etc.) and etc. Avalon RF will work with the user to determine the right combination. Placement/positioning of the transmitter antenna is important for proper operation of the wireless video link.
  • Page 21 If the antenna you received is not one of the above, use the next higher distance or call/e-mail Avalon RF. Operating range will depend on the transmit and receive antennas used - a wide choice of antennas is available from Avalon RF. Please visit the website (www.avalonrf.com) for more details.

  • Page 22: Warranty

    Warranty The Avalon RF Warranty covers Mechanical and Electrical defects for each of the components in your Avalon RF equipment. We will repair or replace the defective part at our cost during the warranty period. Cost is defined as the cost of the component(s) plus our time to install and test the replacement part.

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