The NMS radio modems monitor the condition of the radio connection:
strength of the signal (RSSI) and the voltage level of the power source as well as the inside temperature of the modem, on a continuous basis. The information is transmitted to the SATEL NMS PC, where it is stored and displayed as logs and trend data. With the help of the graphical display of the network available at the SATEL NMS PC, the user can conveniently configure, add or remove radio modems without need of a terminal, as well as draw message routes and set repeater links.
The Network Management System offers the user several significant benefits, including
- Enhanced reliability, through advance indication of anticipated faults and failures
- Reduced configuration and maintenance costs, through remote configuration
- Efficient network development tool
- Flexibility in adapting to customer protocols and applications
A SATELLINE-3AS NMS network provides a working solution to a large variety of wireless data communications applications. It is particularly well suited for frequently changing networks as well as for applications requiring utmost reliability, thanks to efficient monitoring of the signal condition and flexible use of alternative routing. Remote, continuous monitoring of the voltage level of the power source as well as the temperature of the radio modem provide early indication of and possibility of avoiding anticipated problems.
Specifications:
|
Transceiver |
|
Frequency range |
370 - 470 MHz |
|
Channel spacing |
12.5 / 25 kHz |
|
Communication mode |
Half-duplex |
|
Transmitter |
|
Carrier power |
10 mW ... 1 W / 50 ohm |
|
Receiver |
|
Sensitivity |
116 ... -110 dBm (BER < 10 E-3) |
|
Adjacent channel selectivity |
> 60 dB /> 70 dB |
|
Data Modem |
|
Interface |
RS-232, RS-422 or RS-485 |
|
Interface connector |
D 15, female |
|
Data speed of RS interface |
1200 - 38400 bps |
|
Data speed of radio interface |
19200 bps (25 kHz channel) 9600 bps (12,5 / 20 kHz channel) |
|
Data formats |
Asynchronous data |
|
General |
|
Operating voltage |
+8 ... + 30 Vdc |
|
Power consumption |
1.4 VA typical (receive) 6.0 VA typical (transmit) 0.05 VA typical (when DTR is "0") |
|
Temperature range |
Operating: -25 C ...+55 C (tests acc. to ETSI standards), -40 C ...+75 C (absolute minimum / maximum). Storage: -40 C … +85 C |
|
Antenna connector |
TNC, 50 ohm, female |
|
Construction |
Aluminum enclosure |
|
Size H * W * D |
137 * 67 * 29 mm |
|
Weight |
250 g |