Video Input / Output Connections.......................................................7
Data Input / Output Connections.........................................................7
Data Configuration Switches...............................................................8
Data Termination and Bias Switches..................................................8
RT-980 Series Status LED Indicators...............................................10
RT-482-1470/1490 Status LED Indicators........................................11
RR-980 Series Status LED Indicators...............................................13
RR-482-1470/1490 Status LED Indicators........................................14
Warranty / Service Information .........................................................16
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INSTALLATION AND OPERATION INSTRUCTIONS
INTRODUCTION
Thank you for purchasing your American Fibertek Series 91685SL singlemode sixteen channel
video multiplexer with bi-directional multi-protocol data. Please take a few minutes to read these
installation instructions in order to obtain the maximum performance from this product.
FUNCTIONAL DESCRIPTION
The 91685SL Series units operate as a transmitter / receiver pair for the digital transmission of
sixteen simultaneous NTSC or PAL video signals along with two channels of field configurable
bi-directional data over one singlemode fiber optic cable. These data channels may be
configured as RS485 data, RS422 data, RS232 data, or Manchester 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.
NOTE: This unit is shipped with Data Channel 1 and Data Channel 2 in the RS485 4-wire
configuration. For other configurations, please refer to the DATA MODE section for
changes to the default switch settings.
NOTE: This unit is shipped with data terminations off and data bias off for Data Channel
1 and Data Channel 2. For other configurations, please refer to the DATA TERMINATION /
BIAS section for changes to the default switch settings.
The RT-91685SL transmitter accepts up to sixteen video inputs in two groups containing eight
videos and multiplexes each group into a high speed serial data stream. The first group’s serial
data stream modulates a laser at 1510nm wavelength. The second group’s serial data stream
modulates a laser at 1530nm wavelength. A Course Wave Division Multiplexer (CWDM)
combines these two wavelengths, along with the forward data wavelength of 1490nm and the
return data wavelength of 1470nm, onto a single optical output port for connection to the fiber
transmission system. Correspondingly, the RR-91685SL receiver converts the optical signal to
sixteen independent video output signals and two forward data channels while transmitting the
two return data channels.
The 91685SL Series product is designed to operate over an optical loss budget range of 0dB to
21dB on 9um singlemode fiber. Refer to the product specification sheet for additional
performance data.
INSTALLATION
THIS INSTALLATION SHOULD BE MADE BY A QUALIFIED SERVICE PERSON AND
SHOULD CONFORM TO THE NATIONAL ELECTRICAL CODE, ANSI/NFPA 70 AND LOCAL
CODES.
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RT-91685SL COMPONENTS
The RT-91685SL consists of the following components:
1) RT-980-1510 1) RT-CWDM-4 1) SR-20 1) BPS-1
1) RT-980-1530 4) PCSC/UPC-0.3 1) PSR-2 3) BPS-2
1) RT-482-1470/1490
The individual 980 series video rack cards that make up the RT-91685SL are combined in a
rack mount configuration using the SR-20 subrack. Please refer to the instruction manuals for
the SR-20 and the PSR-2 for information on the installation of the subrack with its power supply.
The individual 980 series rack cards can slide into any of the open slots in the SR-20 subrack,
however, the recommended configuration is shown below. This configuration starts with a single
slot blank panel (BPS-1) next to the PSR-2 power supply followed by the RT-482-1470/1490
data card. The RT-CWDM-8 multiplexer continues the configuration which ends with the RT980-1510 and the RT-980-1530 video cards moving towards the left side of the rack. The last
six slots in the rack are covered using three dual slot (BPS-2) blank panels. Following this
configuration allows the fiber port on the back of the 980 series cards to best line up with its
associated port on the CDWM unit. Use a small screwdriver to push and lock the ¼ turn
fasteners into place. To maximize the performance and life of the system, installing a fan above
the SR-20 subrack is recommended to pull air up across the RT-91685SL components.
RT-91685SL
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RR-91685SL COMPONENTS
The RR-91685SL consists of the following components:
1) RR-980-1510 1) RR-CWDM-4 1) SR-20 1) BPS-1
1) RR-980-1530 4) PCSC/UPC-0.3 1) PSR-2 3) BPS-2
1) RR-482-1470/1490
The 980 series video rack cards and the data rack card that make up the RR-91685SL are
installed in a manner similar to the RT-91685SL (see drawing below). Mounting procedures and
recommendations should follow those used for the RT-91685SL.
RR-91685SL
POWER SOURCE
Power to the 980 series and 482 series rack cards is supplied by the subrack. Please refer to
the SR-20 and PSR-2 instructions for further details.
The CDWM unit is a passive device which does not require any power source.
POWER CONNECTION
Power is supplied to the individual 980 series and 482 series units via a four finger backplane
connector. The individual components can be inserted into the subrack or removed from the
subrack with power applied to the backplane. Please refer to the SR-20 and PSR-2 instructions
for details.
The CDWM unit is a passive device which does not require any power connection.
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