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Model 2390/2391

Coax to Fiber Optic Modem Card

S.I. Tech Model 2390/2391 Coax to Fiber Optic Modem Card

Features:

T1 AMI or B8ZS, E1 AMI or HDB3
Status indicators and alarms for ease of use and maintenance
Twisted pair (T1 and E1) or BNC (E1 only) electrical interface options
AMI or zero suppression line codes
Multimode or single mode fiber interface options
Toggle switches for most control settings and rotary switches for T1 line build out settings
Up to 10 Km at low cost

The S.I.Tech 2390/2391 Bit-Driver® is designed to work with T1 or E1 systems. Model 2390/2391 is a T1 or E1 to fiber optic transmitter/receiver full duplex product implementing T1 or E1 protocol. Nominal operating data rate is 1.544 Mbps ±32PPM. (E1 - 2.048 Mbps ±50PPM)

This fiber optic Bit-Driver® product eliminates many disadvantages of metallic T1 and E1 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 2390/2391 is a standalone or rack mount product allowing easy change from T1 or E1 to fiber. Simply connect T1 or E1 cable to model 2390/2391 input/output port.

Specifications

Operating Mode:	Synchronous, half/full duplex 1.544 Mbps, T1 2.048 Mbps, E1
Input/Output Interface:	T1 - RJ48C 100W Twisted Pair E1 - BNC 75W Coax E1 - RJ48C 120W Twisted Pair
Transmission Line Interface:	2 ST fiber optic receptacles
Connector Options:	ST, SC, and FC
Transmission Distance:	See distance chart
Distance Options:	5 km, 10 km, or 20 km
Transmitter Output Power:	30 Microwatts into 50 Micron fiber (820nm & 1300nm options)
Receiver Wavelength:	820 nm or 1300 nm
Minimum Sensitivity:	3 Microwatts @ 820 nanometers
Bit Error Rate:	10^-9
Operating Temperature:	0°C to 50°C
Mean Time Between Failure:	MTBF @ 25° C = 800,000 Hours MTBF @ 50° C = 300,000 Hours [Bellcore test method used]
Enclosure:	19" Rack (Holds 12 cards)
Card Size:	EuroCard 3.9" x 6.8" (9.9 x 7.3 cm)
Weight:	0.5 lb. (200 Grams)
Input Power:	3 Watts Max
standalone Version:	2890 (T1) 2891 (E1)

Operating Distance for Fiber Optic Cable

S.I. Tech Model 2390/2391 Diagram

Female RJ48 I/O Connections

S.I. Tech Model 2390/2391 Diagram