Model 2893/2894/2895

T3/E3/STS1 to Fiber Modem

S.I.Tech 2893/2894/2895 Bit-Driver is designed to work with T3, E3, or STS-1 systems. Model 2893/2894/2895 is a T3, E3, or STS-1 to fiber optic transmitter/receiver full duplex product implementing T3, E3, or STS-1 protocol. Normal operating data rate for T3 is 44.736 Mbps. (E3 - 34.368 Mbps, STS1 - 51.84 Mbps)

This fiber optic Bit-Driver product eliminates many disadvantages of T3, E3, or STS-1 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 2893/2894/2895 is a rack mounted product allowing easy change from T3, E3, or STS-1 to fiber. Simply disconnect T3, E3, or STS-1 cable and connect to model 2893/2894/2895 input/output port. Model 2893/2894/2895 comes with power supply and status indicators.

Specifications

Operating Mode:	Synchronous, half/full duplex 44.736 Mbps, T3 34.368 Mbps, E3 (G.703) 51.84 Mbps, STS-1 (OC-1)
Input/Output Interface:	T3, 75 ohm Coax (BNC) E3, 75 ohm Coax (BNC)
Transmission Line Interface:	2 ST fiber optic receptacles
Connector Options:	ST, SC, and FC
Transmission Distance:	6600 ft (2 km) (5 km option)
Distance Options:	5 km, 10 km, and single mode
Transmitter Output power:	30 microwatts into 50 micron fiber (SM option)
System Wavelength:	820nm or 1300nm
Minimum Sensitivity:	3 Microwatts @ 820 nanometers
Bit Error Rate:	10-9
Operating Temperature:	0 °C to 50 °C
1U Rack:	17.0"W x 1.7"H x 7.5"D (43.2 x 4.3 x 19.0 cm)
Weight:	Rack 6 lb.(2.72kg)
Input Power:	110 VAC, 60 Hz, 10 W
Power Options	2893/2894V (230 VAC) 2893/2894 (-48 VDC)

Operating Distance for Fiber Optic Cable

Fiber Size (Microns)	Attenuation dB/km	Distance* Meters	Distance* Feet
50 62.5 10 SM	3.0 4.0 1.0	2000 2000 10000	6600 6600 33000

* Single mode (1300nm or 1550nm) option
(High power option available for long distances)

ORDERING INFORMATION

Model Numbers
2893(T-3), 2894(E-3), 2895(STS-1 or OC-1) units available with several options.
XXXX - R - ST XXXX - 2R - ST XXXX - R - SM - SC XXXX - V XXXX - 48 XXXX - R - SM - HP - SC XXXX/850/1300	Rack mounted, 110 VAC, ST 2 Channel Rack Mounted, 110 VAC, ST Rack mounted, Single mode, SC, 110 VAC 220 Volt AC Power unit 48 VDC Power unit Rack mounted, Single mode, High power, 110 VAC, SC Unit for use with WDM
Bomara supplies 2893/2894/2895 models with many different options to match customer specific applications. Specify correct part number for your application.