SATELLINE-3AS is a half-duplex radio modem suitable for a variety of data transfer applications, in particular ones demanding high speed and precision. In addition to the maximum data speed 19.2 kbps and channel spacing 25 kHz or 12.5 kHz, it offers a number of features and functions. Message Routing is a new feature in SATELLINE-3AS modems, which makes it easier to build up a large radio modem network. The SATELLINE-3AS software includes a selectable error correction, which improves the functioning of the radio modem under interference. SATELLINE-3AS is compatible with the interface types RS-232, RS-422 and RS-485. Without changing the hard-ware all the parameter settings of the radio modem can be modified through the interface from a PC. The model SATELLINE-3ASd is equipped with a LCD display of its own, which facilitates programming of the radio modem. |
Features:
- Data speed in the air 19200 bit/s at 25 kHz and 9600 bit/s at 12.5 kHz
- RS interface data speed 300...38400 bit/s
- Interfaces RS-232, RS-422 or RS-485
- LCD display and four push buttons in 3ASd
- Error correction (FEC)
- Repeater function
- Programmable output power 10 mW-1 W
- Free Channel Scanning (FCS)
- Show message on display feature
Large Radio Modem Network
The amount of data transferred in a local area data communications network exhibits a tendency of continuous growth. On the other hand, the average size of communications systems are increasing. Satel’s response to these market tendencies is the SATELLINE-3AS radio modems with Message Routing, a characteristic for networking radio modems within a system. Message Routing features a versatile radio protocol, which takes care of routing messages across a radio modem network. Communication is completely transparent, which makes Message Routing directly compatible for most user protocols. Even though the network can cover large areas with multiple hops and repeater stations, only one radio channel is required. Any radio modem in the network can act as a repeater station keeping infrastructure expenses low. Message Routing has two operating Modes to suit the various requirements of different users: Source Mode and Virtual Mode. Virtual Mode has the smallest possible overhead for fast operation identification. Source Mode uses a slightly longer header than Virtual Mode to enable more versatile network handling. In Source Mode it is possible to design failure handling features right in the network, and to use mobile stations.
Specifications:
|
TRANSCEIVER |
|
Frequency range |
from 380 to 470 MHz |
|
Channel spacing |
12.5 / 25 kHz |
|
Communication mode |
Half-duplex |
|
Transmitter |
|
Carrier power |
10 mW - 1 W / 50 ohm |
|
Receiver |
|
Sensitivity |
from -116 to -110 dBm (BER < 10 E-3) |
|
Adjacent channel selectivity |
> 60 dB /> 70 dB |
|
DATA MODEM |
|
Interface |
RS-232 or RS-422. RS-485 |
|
Interface connector |
D 15, female |
|
Data speed of RS interface |
300 - 38400 bps |
|
Data speed of radio interface |
19200 bps (25 kHz channel) |
| 9600 bps (12,5 kHz channel) |
|
Data formats |
Asynchronous data |
|
GENERAL |
|
Operating voltage |
from +9 to + 30 Vdc |
|
Power consumption |
1.8 VA typical (receive) |
| 6.0 VA typical (transmit) |
| 0.05 VA typical (when DTR is "0") |
|
Temperature range |
from -25°C to +55°C |
|
Antenna connector |
TNC, 50 ohm, female |
|
Construction |
Aluminium enclosure |
|
Size H * W * D |
137 * 67 * 29 mm |
|
Weight |
250 g | |