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Summary of Contents for American Fibertek RTM-1485
- Page 1 Instruction Manual RTM-1485 Video Transmitter With Bi-directional RS485 © Copyright 2003, American Fibertek, Inc. 0821JD...
- Page 2 Power Source ..................3 Power Connection ................3 Input / Output Connections..............4 Data Configuration ................4 Switch/Jumper Settings ..............5 RTM-1485 Status LED Indicators............6 RS-485 Termination and Offset Bias Requirements ......7 Warranty..................... 8 Service Information ................8...
- Page 3 MRM-1485 or RRM-1485 video receiver with RS485 transceiver over a single multimode fiber optic cable. The RTM-1485 converts a single video input along with a single RS485 input into a FM modulated optical fiber output using a 1300 nm wavelength source. The RTM-1485 also converts an optical RS485 signal returning on the same fiber into an electronic RS485 output using an 850 nm wavelength detector.
- Page 4 See page 7 for an explanation of termination and offset bias requirements for RS485 data. To open the RTM-1485, remove three screws on top cover to remove cover and access the switch and jumper locations.
- Page 6 Proper Optical Input Power Present Optical Input Not Detected Check Power Supply A bi-color LED indicator is provided for the video input to the RTM-1485. DC power and video status associated with this LED is summarized below. Video Presence LED...
- Page 7 300 mV offset, improving noise immunity. Offset bias for RS485 can be applied on the RTM-1485 by setting switch # 3 and switch # 4 on. Please note that these switches work as a set and must be either both on or both off.
- Page 8 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.
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