Model 2836

Twinax to Fiber Optic Modem

• IBM 3X/AS400, 1 Channel, Twinax

The S.I.Tech 2836 Bit-DriverŪ is designed to work with IBM 3/X & AS/400 systems using twinax cable. Model 2836 Bit-Driver is a twinax to fiber optic transmitter/receiver full duplex product implementing IBM Protocol. Normal operating data rate is 1 Mbps. This fiber optic Bit-Driver product eliminates many disadvantages of twinax, especially EMI/RFI, ground loops (electrical isolation with fiber), high attenuation (high signal loss), limiting distance between nodes of system (5000 feet max. twinax), and potential lightning damage outdoors between buildings.

S.I.Tech Model 2836 is a standalone product allowing easy change from twinax to fiber. Simply disconnect twinax and connect to model 2836 input/output port. Model 2836 comes with power supply and status indicators.

Specifications

Operating Mode:	Synchronous, half or full duplex 1Mbps, Serial Bi-phase data
Input/Output Interface:	100 ohm twinax bulkhead jack, IBM Protocol
Transmission Line Interface:	ST connector fiber optic receptacles (SMA option)
Transmission Distance:	6600 ft (2 km) (5 km option)
Transmitter Output power:	30 microwatts into 50 micron fiber
System Wavelength:	820 nanometers (1300nm option)
Receiver Sensitivity:	3 microwatts at less than 10-9 bit error rate
Operating Temperature:	0 °C to 50 °C
Metal Enclosure:	7.5" x 7" x 3" (19 x 17.8 x 7.6 cm)
Weight:	3 lb (1.36 kg)
Input Power:	110 VAC, 50/60 Hz, 10 W
230V Version:	2836V
Rack Mount Version:	Model 2336 - RJ11 connector (3000 rack)

Operating Distance for Fiber Optic Cable

Optical Unit Connection: Connect the optical transmission line to the T and R receptacles. Note which cable channel goes to T or R by noting the cable imprint. On the other end, reverse the connections.