S.I. Tech, Inc.Model 9036 - Fiber to RJ45 HUB - IBM Systems 3X & AS/400

Operation Mode:

Synchronous, half or full duplex 1 Mbps, Serial Bi-phase data

Input/Output Interface:

100 ohm twinax bulkhead jack input or fiber & IBM protocol RJ45 output

Transmission Line Interface:

2 ST fiber optic receptacles (SMA option)

Transmission Distance:

See distance chart

Transmitter Output Power:

30 microwatts into 50 micron fiber

System Wavelength:

820 nanometers (1300 nm option)

Receiver Sensitivity:

3 µw at less than 10-9 bit error rate

Operating Temperature:

0 °C to 50 °C

Input Power:

110 VAC, 50/60 Hz, 10 W

Metal Enclosure:

Rack mount - 1U high
17.0"W X 1.7"H X 7.5"L
(43.2 X 4.3 X 19 CM)


6.5 lb(3 kg)

230V Version:

IBM and AS/400 are trademarks of International Business Machines Corp.

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)



  • Supports IBM 3X & AS/400 Protocol
  • Status indicators - TD, RD, and Power
  • Allows direct connect to RJ45 twisted pair cable, no balun required
  • Twinax to fiber. Combines fibers to TP in one unit
  • Multimode or singlemode option

S.I.Tech 9036 Fiber Cluster is designed to work with IBM 3X & AS/400 systems using twinax cable & STP cable. Model 9036 Bit-Driver is a twinax to fiber optic transmitter/receiver full duplex protocol. Normal operating data rate is 1 Mbps.

This Fiber Cluster Hub product eliminates many disad- vantages 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 9036 Fiber Cluster is a stand alone Star Hub product allowing easy change from twinax to fiber, to STP: simply disconnect twinax and connect to model 9036 input/output port. Model 9036 comes with power supply and status indicators.

At remote end 9036 with RJ45 allows easy connection to 7 terminals or PCs in Star Hub configuration, eliminating a need for separate Hub.

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 cable imprint. On the other end, reverse the connections.

  1. IBM specifications: Twinax 5000 ft. (1524 m) max, local ports - 7 devices max, remote ports - 4 devices max, 5751 Cluster Controller, 5294 and 5394 controllers.
  2. If other than twinax cable is used, matching impedance transformers (Balun) are recommended. S.I.Tech 9036 Hub is designed to run without balun.
  3. Some fiber types in short distance applications may overload the receiver.

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.
©2015 S.I. Tech, Inc. All copy and images.