Digital optical modems of DOM series are intended to transmit different digital streams at the distance up to 120 km.
Optical modems of DOM series have flexible configuration ** and it can transmit:
* Up to 16 stream of E1 (each 2048 Kbit/s);
* Ethernet channel from 1.5 till 32Mbit/s depending on the number of unused E1 streams (resources of any unused E1 stream - 2048Kbit/s - automatically refer to Ethernet channel);
* Channel of telemetry and telesignaling;
* Additional channel of data transmission RS-232;
* Channel of voice connection;
* 8 independent audio channels (4 pairs of stereo signals). Audio signal transmitted in digital mode without using of compression algorithms;
* Channel of signal sensor and operating device.
** Modem's configuration is formed by order - options which are not used by customer can be excluded.
Optical modems of DOM series also have:
* The possibility to install the laser with wavelength of emission - 1310 или 1550 nm
* The possibility to do distance monitoring and control of all station's multiple-stream transceiving system with the help of service program through the channel of telemetry and telesignalizing.
* Power supply ~140...260V (alternating voltage) with the possibility to connect reserve voltage 24:60V (direct voltage).
|Wavelength||1310 nm, 1550 nm|
|Optical output power||+3 dBm|
|Sensitivity||- 31 dBm|
| Communication distance
|Type of optical connectors||SC/APC (to order SC/PC or FC/PC)|
|Interface Е1||G.703, code HDB-3, 120 Ohm|
|Maximal length of line connection for stream E1 with STP cable of 5th category||1000 m|
|Ethernet interface||IEEE 802.3 (10/100 Base-T)|
|Payload||4xE1+ Ethernet (25Mbit/s) or Ethernet (33Mbit/s) or N*E1 and Ethernet (25+8-2*N Mbit/s), N=0...4|
|Additional channel of data transmission RS-232||1,2...115,2 kbit/s (it is selected by program)|
|Channel of voice connection||64 kbit/s (duplex)|
|Connection of input signal sensor and operating devices||1 input / 1 output at each modem|
|Local control||RS-232 56000-8-N-1|
|Range of operating temperature / humidity / air pressure||+5...+ 50 оС/90 % at 25 оС/ 70-106,7kPa (537-800 c. m.)|
|Time of set readiness to work||60 s|
|Mode of operation||continuous|
|Power consumption (two half-sets)||50 W|
| Voltage supply
140...250 V / 50 Hz
|Dimensions||19"(2U) 483x325x88 mm|
Modem can contain the next boards:
2.Modul board 8E1
3.Service channels board
4.Ethernet modul board