Specifications

Chapter 1. Introduction FOMi-E1/T1 Installation & Operation Manual
1-2 Physical Description
Features
FOMi-E1/T1 extends the range of E1/T1 signals over fiber optic links. It is
available as a standalone unit or as a card version for the LRS-12 19"
modem rack with SNMP management.
FOMi-E1/T1 supports E1 balanced and unbalanced
(coax) interfaces and is
transparent to framing. Operating over multimode or single mode fibers,
FOMi-E1/T1 has a transmission range up to 100 km using the laser diode
option.
FOMi-E1/T1 conforms to all relevant ITU standards; diagnostic loops
conform to ITU V.54 standard.
Full management of local and remote units is available from the front panel.
Alarms are indicated in real time, for local and remote units, including dry
contact external alarms, on the front panel LCD or on the attachable PCU.
FOMi-E1/T1 features a built-in V.52 BER tester.
FOMi-E1/T1 is designed to operate with several different grades and sizes of
fiber-optic cable, and provides the user with:
•
Extended range for high-rate transmission
•
Immunity to electrical interference such as EMI, RFI, spikes and
differential ground loops
•
Secure data transfer (no tapping on the information passed)
•
Protection from sparking and lightning
•
A secure link in hazardous or hostile environments.
Versions
The FOMi-E1/T1 unit is supplied in a compact, standalone case that can
either be placed on a desk top/shelf, or mounted in a 19" rack (with
adapters). A card version for the LRS-12 manageable rack, which can
accommodate up to 12 modem cards, is also available.
The modem can be ordered as either master version or slave version. The
FOMi-E1/T1 slave version features a proprietary 20-pin connector for
connection to the PCU unit.
The following ordering options are available:
•
850 nm multimode
•
1300 nm LED for singlemode or multimode fibers
•
LASER diode for increased range over 1300 nm or 1550 nm singlemode
fibers.