View of the transmitter

Rear view

The included accessories

Optical Transmitter MOS-211B R81720B is dedicated for cooperation with the TERRA MMH-3000 headend. It converts electrical signals from the headend applied to RF IN into optical signals. The device cooperates with ROS-121M R81721 optical receiver and OD-xxx optical nodes.

Optical transmitter MOS-211B R81720B is a transmodulator of RF electrical signals into optical signal of 7 dBm level. It cooperates with single-mode optical fibers operating in 1310 nm window.

The device has been equipped with keypad and LCD display. The first information is current firmware version and device status. With reverse channel, it is possible to obtain information on remote optical node.

Optical links are indispensable when the SMATV/cable TV network is quite extensive (the distance between the headend and distributing network exceeds 300 m).

Name	Optical transmitter MOS-211B
Kod	R81720B
Optical power	7 dBm
Laser type	DFB
Modulation	direct
Optical wave length	1310+/-10 nm
RF frequency range	47-862 MHz
Pass-band ripple	+/-0.75 dB
RF input level	75...90 dBuV
Relative intensity noise (RIN)	<-155 dB/Hz
CNR	>=51 dB
CTB	>=65 dBuV
CSO	>=60 dBuV
Gain adjustment	15 dB with 0.5 dB step
Slope adjustment	10 dB with 0.5 dB step
Optical connector	SC/APC
Power	230 V / 50 Hz 17 W
Dimensions / Weight	485x58.5x171 mm / 3.9 kg

Optical transmitter MOS211B can also be controlled via TerraLink software. Because this program is dedicated for maximum two UC-380 sub-racks, there is possibility of addressing the transmitter as one of the modules, on the condition that one slot in a sub-rack remains empty.