 Smart series (45Mb)digital microwave equipments developed by our company is to fit the growing demand of broadcast digital transmission. System is mainly composed of high-performance antenna, outdoor unit (ODU), indoor unit (IDU) and the system cable. The transmission capacities are 45Mb (21E1), 1+0 / 1+1 working, providing service and channel monitoring additionally. The random provided local monitoring system software can effectively manage the device parameters.
application
for SDH microwave radio and television (optical) transmission networkisextension, or building independent transmission stations and are applicable to the building and connection of the public network or other private networks.
technical characteristics
Using Forward Error Correction technology, a superior error correction function.
Frequency, power adjustable.
Plus service and control channel, having a local monitoring function.
Interconnection only with a coaxial cable that can be up to 300 meters.
main technology data£º
|
item |
Smart |
|
frequency band(GHz) |
7 |
8 |
13 |
15 |
18 |
11 |
|
frequency range(MHz) |
7125-7725 |
8275-8500 |
12750-13250 |
14450-15350 |
17700-19700 |
10700-11700 |
|
frequency stability |
10ppm |
20ppm |
|
transmitting power£¨dBm£© |
+27 |
+25 |
+17 |
|
Noise coefficient
(dB,including duplexer) |
4.5 |
5.5 |
|
Threshold Level(dBm)(measured at the antenna port and received)
BER=10-6 |
-86 |
-86 |
-85 |
-85 |
-85 |
-85 |
|
Service channel |
Digital service, auxiliary data 2 channels(RS-232C,0-32kbps),
monitoring data(RS-232C/RS485,9.6kbps) |
|
Modulating mode~ |
QPSK |
|
Communicating interface |
DS3(ITU-T G.703£©) |
|
Operating condition |
ambient temperature:IDU 0drges +45drges (guaranteed range)
-5drges - +50drges (normal operating)
ODU -30drges -+55drges(guaranteed range)
-35drges - +60drges (normal operating)
relative humidity:IDU 90%(no condensate)
ODU 100%
altitude: 5000m |
|
Power consumption |
50W(1+0system),110W(1+1system) |
|
power source |
-48V DC(-36V - -72V DC) |
|
EMC |
conforming to YD1138-2001 | |
