S.I. Tech, Inc.2390 (T1) / 2391 (E1) - 1U T1/E1 to Fiber 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: ST, SC, and FC
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]
Enclosure: 19" Rack holds 12 cards
Card Size: Eurocard 3.9" x 6.8"
(9.9 x 17.3 cm)
3001 Rack
Weight: 1/2 lb.(200.grams)
Input Power: 3 Watts Max
Related Products: 2890 (T1) / 2891 (E1)
  • 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.

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 stand alone 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.

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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