
Instruction Manual
Four Channel Video Transmitter
© Copyright 2003, American Fibertek, Inc. 0708JD
RT-404

INSTALLATION AND OPERATION INSTRUCTIONS
INTRODUCTION
Thank you for purchasing your American Fibertek RT-404 multimode four channel video
transmitter. Please take a few minutes to read these installation instructions in order to
obtain the maximum performance from this product.
FUNCTIONAL DESCRIPTION
The RT-404 operates as half of a transmitter / receiver pair for the transmission of four
simultaneous, real time, baseband NTSC, PAL, RS170, or RS343 video signals over a
single multimode fiber optic cable. It is designed to operate with the MR-404 or RR-404
four channel video receiver.
The RT-404 transmitter accepts up to four video inputs. Each video input modulates a
separate FM carrier frequency to allow the total of four video signals to be combined
onto one fiber. The 404 Series product is designed to operate over an optical loss
budget range of 0 to 6 dB with a maximum distance of up to 1.5 km. The RT-404
operates on 50 um or 62.5 um multimode fiber. Refer to the data sheets for detailed
performance specifications.
This unit is designed for rack mounting in any of the three American Fibertek subracks
available. The subrack model numbers are SR-20/1, SR-20R/1, and SR-20/2. Slide in
rack mounting and LED indicators provide for easy installation and monitoring of video
and dc power.
The RT-404 is designed for rack mounting only. For a modular stand alone version
please see the MT-404.
INSTALLATION
THE INSTALLATION OF THIS UNIT SHOULD BE MADE BY A QUALIFIED SERVICE
PERSON(S) AND MUST CONFORM TO ALL LOCAL CODES.
The unit slides into any two adjacent open slots in the SR-20 subrack. Use a small
screwdriver to push and lock the four ¼ turn fasteners into place.
POWER SOURCE
Power to the unit is supplied by the subrack. Please refer to the SR-20 and PSR
instructions for further details.
POWER CONNECTION
Power is supplied to the unit via a four finger backplane connector. The RT-404 can be
inserted into the subrack or removed from the subrack with power applied to the
backplane.
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INPUT / OUTPUT CONNECTIONS
The fiber optic connection is made via a ST connector located on the back of the unit.
Be sure to allow sufficient room for the required minimum bend radius of the fiber cable
used.
Video input connections are located on the back of the unit. A BNC connector is
provided for each channel. The video inputs are connected to an appropriate 75Ω
baseband video source such as a camera or a video recorder output. For optimum
performance the video cables should be the shortest length of coax practical.
RT-404 STATUS INDICATORS
The RT-404 transmitter provides the following LED status indicators to aid in installation
and troubleshooting:
VLI 1 THROUGH VLI 4
A bi-color LED indicator is provided for each of the four video channel inputs. DC power
and video status associated with each of these LEDs are summarized below.
Video Presence LED DC Power Status Video Status
Green On Proper Input Video Present
Red On Input Video Not Detected
Off Off Check Power Supply
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LIFETIME WARRANTY INFORMATION
American Fibertek, Inc warrants that at the time of delivery the products delivered will be
free of defects in materials and workmanship. Defective products will be repaired or
replaced at the exclusive option of American Fibertek. A Return Material Authorization
(RMA) number is required to send the products back in case of return. All returns must
be shipped prepaid. This warranty is void if the products have been tampered with. This
warranty shall be construed in accordance with New Jersey law and the courts of New
Jersey shall have exclusive jurisdiction over this contract. EXCEPT FOR THE
FOREGOING WARRANTY, THERE IS NO WARRANTY OF MERCHANTABILITY OR
FITNESS FOR A PARTICULAR PURPOSE OR OTHERWISE, EXPRESSED OR
IMPLIED, WHICH EXTENDS BEYOND THE WARRANTY SET FORTH IN THIS
AGREEMENT. In any event, American Fibertek will not be responsible or liable for
contingent, consequential, or incidental damages. No agreement or understanding,
expressed or implied, except as set forth in this warranty, will be binding upon American
Fibertek unless in writing, signed by a duly authorized officer of American Fibertek.
SERVICE INFORMATION
There are no user serviceable parts inside the unit.
In the event that service is required to this unit, please direct all inquiries to:
American Fibertek, Inc. Phone: (877) 234-7200
120 Belmont Drive Phone: (732) 302-0660
Somerset, NJ 08873 FAX (732) 302-0667
E-mail: techinfo@americanfibertek.com
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