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
|
E1 interface |
|
|
Number of E1 interfaces |
2 |
|
Transmission rate |
2.048Мб/с+-50ppm |
|
Linear code |
HDB3 |
|
Gitter |
No worse than G.742, G823 |
|
Interface standard |
ITU-T G.703 |
|
E1 impedance |
120 Ohm (balanced) |
|
Connector type |
RJ-45 |
|
Fast Ethernet 10/100 (per request) |
|
|
Connector type |
RJ-45 |
|
Optical interface |
|
|
Wave length |
1310 and 1550 ± 50..40 nm (WDM) |
|
Radiator |
MLM Laser |
|
PIN detector |
Photo diod |
|
System budget |
20 km SM |
|
Physical code |
Scrambled NRZ |
|
Connector type |
SC/PC |
|
Mechanical and electrical properties |
|
|
Size |
Height 44 mm (1unit) |
|
Unit type |
To 19” column or free standing (as per request) |
|
Power supply |
175..250 V (50/60 Hz) or –48 V DC (-36..-72 V) |
|
Power consumed |
<5 W |
|
Operating temperature |
0 - 50°C |
|
Operating humidity |
0 - 90% (without condensate) |
Order information
There are several variants to realize optical transmission systems:
|
Marking of communication system |
Number of transmitted E1 flows |
Communication range |
Service connection |
Fast Ethernet |
||
|
|
Semi couple |
Semi couple |
||||
|
PDH |
2E1-SM10-1310 |
2E1-SM10-1550 |
2 |
10 |
- |
- |
|
PDH |
2E1-SM20-1310 |
2E1-SM20-1550 |
2 |
20 |
- |
- |
|
PDH |
2E1-SM40-1310 |
2E1-SM40-1550 |
2 |
40 |
- |
- |
|
PDH |
2E1-SM60-1310 |
2E1-SM60-1550 |
2 |
60 |
- |
- |
|
PDH |
2E1-SM10-1310-ETH |
2E1-SM10-1550-ETH |
2 |
10 |
- |
+ |
|
PDH |
2E1-SM20-1310-ETH |
2E1-SM20-1550-ETH |
2 |
20 |
- |
+ |
|
PDH |
2E1-SM40-1310-ETH |
2E1-SM40-1550-ETH |
2 |
40 |
- |
+ |
|
PDH |
2E1-SM60-1310-ETH |
2E1-SM60-1550-ETH |
2 |
60 |
- |
+ |
|
PDH |
2E1С-SM10-1310 |
2E1С-SM10-1550 |
2 |
10 |
+ |
- |
|
PDH |
2E1С-SM20-1310 |
2E1С-SM20-1550 |
2 |
20 |
+ |
- |
|
PDH |
2E1С-SM40-1310 |
2E1С-SM40-1550 |
2 |
40 |
+ |
- |
|
PDH |
2E1С-SM60-1310 |
2E1С-SM60-1550 |
2 |
60 |
+ |
- |
|
PDH |
2E1С-SM10-1310-ETH |
2E1С-SM10-1550-ETH |
2 |
10 |
+ |
+ |
|
PDH |
2E1С-SM20-1310-ETH |
2E1С-SM20-1550-ETH |
2 |
20 |
+ |
+ |
|
PDH |
2E1С-SM40-1310-ETH |
2E1С-SM40-1550-ETH |
2 |
40 |
+ |
+ |
|
PDH |
2E1С-SM60-1310-ETH |
2E1С-SM60-1550-ETH |
2 |
60 |
+ |
+ |
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