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FEATURES
The FOM-E1/T1 is a Fiber Optic Modem, providing extended
range for E1 (2.048 Mbps) or T1 (1.544 Mbps) signals over Fiber Optic Cable.
The FOM-E1/T1 is designed to operate over several
grades and sizes of fiber optic cable. The type of fiber optic interface
chosen depends on the type of cable available and the operating distances
required.
Three optical interfaces are available:
- 850 nm LED for use over multimode fiber with typical
distances up to 5 km
- 1300 nm LED for use over single mode fibers with typical distances up to
20 km
- 1300 nm LASER diode for use over single mode fibers for extended range up
to 50 km
The FOM-E1/T1 complies with ITU standards G.703, G.921
and G.956. The electrical interface includes circuits for recovering data
and clock according to ITU G.703. The FOM-E1/T1 is transparent to E1 and T1
framing and operates with G.703 framed (G.704), or unframed signals.
Depending upon internal selection, the FOM-E1/T1's
electrical interface complies with E1 or T1 standard. Internal selection is
provided for the following interfaces:
- 75 ohms unbalanced for E1
- 120 ohms balanced for E1
- 100 ohms balanced for T1
LED status indicators and a supervisory port are
provided for indicating system faults.
The indicators available are optical AIS and ERR,
electrical LOW and AIS. The supervisory port includes two dry contact
closures:
1) For minor alarms (AIS in electrical or optical
interface);
2) For major alarms (low level at the electrical interface or High Bit Error
Rate at the optical interface).
Local loopback and remote loopback are available.
Diagnostics are provided in compliance with ITU
standard, and are activated from a front panel switch.
The FOM-E1/T1 provides all the benefits of fiber
optics:
noise immunity, high security, no RFI interference and extended distances.
The unit is available as a stand-alone unit, or as a
rack-mount card for the ASM-MN-214 19" rack. The rack can hold up to
fourteen FOM-E1/T1 cards.
Special hardware (RM-9) for mounting one or two
stand-alone units in a 19" rack can be ordered seperately.
SPECIFICATIONS
- Extends the range of E1, T1 signals over fiber
optic cable up to 50 km (31 miles)
- Transparent to framing (G.704)
- Supports E1 (coax), balanced and unbalanced
interfaces
- Conforms with all relevant ITU (CCITT) standards
- Multimode or single mode fiber option
- LASER diode option for extended ranges up to 50 km
- Built-in diagnostics comply with V.54 standard
FOM-E1T1/*/#
Stand-alone E1/T1 Fiber Optic Modem
FOM-E1T1R /*/#
E1/T1 modem card for the ASM-MN-214 19" rack
* Specify the Fiber Optic interface:
SM85 for 850 nm multimode LED with SMA
connector
ST85 for 850 nm multimode LED with ST connector
FC85 for 850 nm multimode LED with FC-PC connector
ST13 for 1300 nm single mode LED with ST connector
FC13 for 1300 nm single-mode LED with FC-PC connector
STLA for 1300 nm single-mode, LASER diode with ST connector
FCLA for 1300 nm, single-mode, LASER diode with FC-PC connector
# Specify power supply:
100 for 100 VAC
115 for 115 VAC
230 for 230 VAC
48 for -48 VDC
RM-9
Special hardware for mounting two units in a 19" rack
ORDERING
FOM-E1T1/FC13/115
FOM-E1T1/FC13/24
FOM-E1T1/FC13/48
FOM-E1T1/FC13L/115
FOM-E1T1/FC13L/48
FOM-E1T1/FC85/115
FOM-E1T1/FC85/48
FOM-E1T1/R/FC13
FOM-E1T1/R/FC85
FOM-E1T1/R/SC13
FOM-E1T1/R/SC85
FOM-E1T1/R/ST13
FOM-E1T1/R/ST13L
FOM-E1T1/R/ST15L
FOM-E1T1/R/ST85
FOM-E1T1/SC13/115
FOM-E1T1/SC13/230
FOM-E1T1/SC13/24
FOM-E1T1/SC13/48
FOM-E1T1/SC13L/115
FOM-E1T1/SC13L/48
FOM-E1T1/SC15L/115
FOM-E1T1/SC85/115
FOM-E1T1/SC85/230
FOM-E1T1/SC85/48
FOM-E1T1/ST13/115
FOM-E1T1/ST13/230
FOM-E1T1/ST13/24
FOM-E1T1/ST13/48
FOM-E1T1/ST13L/115
FOM-E1T1/ST13L/48
FOM-E1T1/ST15L/115
FOM-E1T1/ST15L/230
FOM-E1T1/ST15L/48
FOM-E1T1/ST85/115
FOM-E1T1/ST85/230
FOM-E1T1/ST85/24
FOM-E1T1/ST85/48
APPLICATION
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