S.I. Tech, Inc.2890 (T1) / 2891 (E1) - 1U T1/E1 to Fiber Bit-Driver®

2890 Bit-Driver

Operation Mode: Synchronous, half/full duplex
T1 - 1.54 Mbps
E1 - 2.048 Mbps
Input/Output Interface: T1, RJ48C 100 Ohm Twisted Pair
E1, BNC 75 Ohm Coax or
E1, RJ48C 120 Ohm Twisted Pair
Transmission Line Interface: 2 ST fiber optic receptacles
Connector Options: SC, FC, and SMA
Transmission Distance: See distance chart
Distance Options: 5km, 10km, or 20km
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]
Metal Enclosure: 7.5" X 7" X 1.75" - 1U
(19 X 17.8 X 4.4 cm)
1U Rack Mounting Option: 17.0"W X 1.7"H X 7.5"D
(43.2 X 4.3 X 19.0 cm)
Weight: 2 lb.(1.0 kg) / Rack 5 lb.(2.30kg)
Input Power: 3 Watts Max
Power Options: 2890/2891V (230 VAC)
2890-48/2891-48 (-48 VDC)
Rack Mount Version: 2390/2391 (Euro Card Size)
  • T1 AMI or B8ZS, E1 AMI or HDB3
  • Provides clear channel capability
  • Status indicators and alarms for ease of use and maintenance
  • Multimode or single mode fiber interface options
  • Up to 10 Km at low cost
  • Optical link failure alarm build in

The S.I.Tech 2890/2891 Bit-Driver is designed to work with T1 or E1 systems. Model 2890/2891 is a T1 or E1 to fiber optic transmitter/receiver full duplex product implementing T1 or E1 protocol. Normal operating data is 1.544 Mbps. (E1 - 2.048 Mbps)

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 2890/2891 is a stand alone or rack mount product allowing easy change from T1 or E1 to fiber. Simply connect T1 or E1 cable to model 2890/2891 input/output port. Model 2890/2891 comes with power supply and status indicators.

UL Listed. Meets FCC requirements of Class A, Part 15 Computing Devices Standard.
Specifications subject to change without notice.

View Complete Technical Data Sheet (PDF)


Contact Information: Phone: 630.761.3640 Fax: 630.761.3644 Email: sales@sitech-bitdriver.com
S.I. Tech, Bit-Driver®, and Fiber Cluster® are registered trademarks of S.I. Tech, Inc.
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