American Fibertek RR-915C - Manual (Page 2)

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INSTALLATION AND OPERATION INSTRUCTIONS
INTRODUCTION
Thank you for purchasing your American Fibertek RR-915C multimode video receiver with bi-directional
multi-protocol data and bi-directional contact closure. Please take a few minutes to read these
installation instructions in order to obtain the maximum performance from this product.
FUNCTIONAL DESCRIPTION
The RR-915C operates as half of a transmitter / receiver pair for the transmission of high performance
10 bit digital NTSC, PAL, RS170, or RS343 video signals. The RR-915C also supports two bi-
directional data channels. These data channels are configured as follows:
Channel 1: RS485 (2 or 4 wire) data, RS422 data, RS232 data, or Manchester data
Channel 2: Contact Closure (dry)
NOTE: This unit is shipped with Channel 1 in the RS485 4-wire configuration. For other
configurations, please refer to the DATA CONFIGURATION section for changes to the default
switch settings.
The RR-915C is designed to operate with the MT-915C or RT-915C video transmitter with bi-directional
data over one multimode fiber optic cable.
The RR-915C multiplexes up to two data signals into a high speed serial data stream. This serial data
stream modulates a laser at 1550 nm wavelength. The RR-915C also detects and demultiplexes a
return optical serial data stream signal containing a single video input signal along with up to two data
channels at 1310 nm wavelength. The 915C Series product is designed to operate over an optical loss
budget range of 0 to 21 dB when used on 9 um multimode fiber. Refer to the product specification
sheet for additional performance data.
The RS485 channel may be configured for 2-wire (half duplex) or 4-wire (full duplex) with or without
biasing. Switch selectable internal 120 ohm terminations are available for RS422 or RS485 data.
This unit is designed for rack mounting in either of two American Fibertek subracks available. The
subrack model numbers are SR-20/2 or SR-20D/2. Slide in rack mounting, detachable terminal blocks,
and LED indicators provide for easy installation and monitoring of video, data, and optical power.
The RR-915C is designed for rack mounting only. For a modular stand alone version please see the
MR-915C.