PDH 2E1-SM20-1310 & 2E1-SM20-1550

PDH 2E1-SM20-1310 & 2E1-SM20-1550 converters for transmission of 2 flows E1 via one single-mode optical fiber at distance up to 20 km. Media converters operate as per point-point circuit. Reception and transmission are performed at different lengths of waves. . They work in 19” case and have double supply system -48 V and 220 V.There is a light system indication of emergencies and various modes of operation that provides quick diagnostics.

Features

• 2 digital interfaces as per 2.048 Mb/s (E1 flow) per one fibre
• Control interface for remote centralized monitoring with maintenance of remote port
• One additional phone line (as per request)
• One additional Fast Ethernet channel 10/100 (as per request)
• Flexibility of power supply selection 175..250 V AC or -48 V DC
• 1U/19” metal case
• Synchronization recovery circuit DPLL approved for 2.048 Mb/s channel
• LED indication
• Equipment operates as WDM pair

LED indication:
Indication of optical signal of E1 flow at local device
Indication of optical signal of remote device
Return loop indicator
Out-of-order call indicator
Power supply indicator

DIP switches on the front panel:

DIP switches №1 and №2 are designed for testing of equipment and arranging remote loop as per E1. DIP switch №6 is intended for testing of optical communication line and arranging loop via optical channel (TX-RX). DIP switch №5 is designed for connection and disconnection of acoustic emergency signal.

Specification

Order information
There are several variants to realize optical transmission systems: