FT120DB Series Installation & Operation Manual
www.ot-systems.com
4
(2) Product Overview
2.1 Introduction
The FT120DB Series products comprise of either single-mode or multi-mode fiber optic
transmitters and receivers catering for optical transmission of ONE forward (Tx
→
Rx) video and
TWO bi-directional (Tx
↔
Rx) data signals in one fiber. The products work at wavelengths
1310nm and 1550nm with either a 9/125um or 62.5/125um fiber for single-mode or multi-mode
transmission respectively.
A non-compressed 10-bit digital video transmission scheme is implemented which supports
multi-systems video in NTSC, PAL and SECAM formats. Transparent data transmission is also
accomplished in RS232, RS422 and RS485 formats regardless of the types of communication
protocol implemented within the system. Time Division Multiplex (TDM) technique is employed for
digital transmission of forward video and data; whereas optical Wavelength Division Multiplex
(WDM) technique is employed for simultaneous reverse data transmission so as bi-directional
data transmission is accomplished.
For the single-mode transmission, we also offer specifically designed products for long-haul
transmissions up to 60km. Their model names include a letter “L” in the suffix, e.g.
FT120DB-SST
L
for Tx, FT120DB-SSR
L
for Rx, etc.
The FT120DB Series units are available as standalone units, which can be mounted
horizontally or vertically wall-mounted on any fixtures. The standalone unit comes with an
external power adaptor FT-PA/12V, which can be powered by a local residential power supply
outlet.
The FT120DB Series units are also available as plug-in cards installed in 19” rack-mount
chassis deployed in small, medium to large systems. Each plug-in card occupies two slot space
inside the rack-mount chassis. The rack mount chassis has to be ordered separately which is
integrated with a power supply unit for powering the installed card modules.
