Intellisystem IT-7301-PC, User Manual

Page: 4 / 12

3
1. Product Overview
IT-7301-PC is a high-performance E1 fiber optic modem developed by using a dedicated integrated circuit. It
is to modulate a non-framing E1 data signal directly into single- or multi-mode optic fiber for a transmission
via optic cable line. At another end of the optic cable, optical signal is demodulated into a non-framing E1
data signal. E1 interface may be directly connected with the E1 interfaces of image and data terminals or the
WAN ports of MUX, exchanger and router for a dedicated network setup or a LAN connection.
2. Product Features

Conforms to all relevant ITU series standards (ITU-T G.703 G.704 G.823)

Transmit one E1 channel

E1 time slot in arbitrary option

Balanced 120Ω/non-balanced 75Ω interfaces automatic

Support the loop back of local analog/digital interface

Support pseudo-random code test function, providing convenience for the test of optic fiber line status

120km trunking -free transmission distance for single-mode optic fiber

Capable to be communicated with V.35 fiber modem

Available with complete line detection and alarm indications

Available with independent structure and 19-inch frame-mounted structure (frame-mounted structure can
be inserted with 16 modules);

AC 220V and DC
–48V inputs may be selected for fiber optic modems of both structures;

For frame-mounted fiber optic modems, dual power supply heat backup is provided to ensure a
Receiving level
：
0~-43db
3. Technical Indexes
Optic interface:

Line mode type
：
CMI

Line mode rate
：
2.048Mbps

Operating wavelength
：
850nm,1310nm or 1550nm

Optic fiber connector
：
SC/PC

Applicable optic fiber
：
multi-mode, single-mode

Transmission distance
：
Single-mode
：
up to 120km Multi-mode: up to 2km