Model 2896

Redundant T1 to Fiber Modem

S.I.Tech 2896 Bit-Driver is designed to work with T1 systems. Model 2896 is a T1 to fiber optic transmitter/ receiver full duplex product implementing T1 protocol, 2 CH rack mounted, power unit and built in redundancy. (110VAC, 220VAC, or -48VDC)

This fiber optic Bit-Driver product eliminates many disadvantages of metallic T1 signals, especially EMI/RFI, ground loops (electrical isolation with fiber), high attenuation (high signal loss), limiting distance between nodes of system, and potential lightning damage outdoors between buildings.

S.I.Tech Model 2896 Bit-Driver is a rack mount product allowing easy change from T1 to fiber. Simply connect T1 cable to Model 2896 input/output port. Model 2896 comes with power supply and status indicators. 2896 provides 2-T1 channels. Unit works with 110VAC, 220VAC, and -48VDC input power, 50/60 Hz, 20W. Power can be switched ON or OFF on each channel, as well as primary. Unit can be used as 2 channels or redundant with automatic switch over.

Specifications

Operating Mode:	Synchronous, half/full duplex 1.544 Mbps (DS-1 protocol)
Input/Output Interface:	RJ48 TP-100 Ω 2 CH
Transmission Line Interface:	4 ST Fiber Optic receptacles
Transmission Distance:	See Distance Chart
Transmitter Output Power:	30 Microwatts into 50 Micron fiber (1300 nm Option)
Receiver Wavelength:	820 nm (1300 nm Option)
Line Bit Rate:	1.544 Mbps
Error rate:	10-9
Line Code:	AMI or B8ZS
Dynamic Range:	10 dB
Frame Structure:	T1
Minimum Sensitivity:	3 Microwatts @ 820 nanometers
Operating Temperature:	0°C to 50°C
Relative Humidity:	95%
Mean Time Between Failure:	MTBF @ 25°C = 470,000 Hours MTBF @ 50°C = 190,000 Hours [Bellcore test method used]
Metal Enclosure:	17.0"W x 1.7"H x 7.5"D (43.2 x 4.3 x 19.0 cm) Designed for 19" Rack, 1U High Rack
Weight:	6 lb. (2.72kg)
Input Power:	85 to 240 VAC, 50/60 Hz, 10 W (-48VDC option available)

Operating Distance for Fiber Optic Cable

Female RJ48 I/O Connections