Satel 3AS

SATELLINE-3AS is a half-duplex radio modem suitable for a variety of data transfer applications, inparticular ones demanding high speed and precision. In addition to the maximum data speed of 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 hardware 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.

More Speed

SATELLINE-3AS exhibits a maximum data speed of 19.2 kbps. Two different channel spacing, 25 kHz and 12.5 kHz are available. The corresponding numbers of radio channels are 80 and 160, respectively. SATELLINE-3AS is compatible with the three most widely used standard data interfaces RS-232, RS- 422 and RS-485. The radio modem can be connected to a terminal with any one of these interfaces. The data speed is selectable within the limits 300...38 400 bps. 

In the SATELLINE-3AS the error rate is minimized by means of advance checking and correction of the data packets. In Forward Error Correction (FEC), the data packets are split in several blocks. The radio modem adds correction information inside the blocks during transmission.

 In SATELLINE-3AS the setting of operating parameters and selection of mode and function is performed with a PC through the RS interface. The model SATELLINE-3ASd is equipped with a LCD display and four push buttons. In addition to changing the setups of the radio modem, the display is used for testing operating condition of the radio connection between two stations. 

The software of the SATELLINE- 3AS resides in a flash memory. The updating of the radio modem programs is entirely software-based. The flash memory is re-programmable through an RS interface.

SATELLINE-3AS can be operated at a voltage range 9...30 V. In practice this means that the radio modem is adaptable to both 12 Vdc and 24 Vdc systems.

Auxilary Functions

With the radio modem in the Test Mode, the state of the radio connection can be tested by means of data packets or the carrier wave.

The Data Transfer mode of the SATELLINE-3AS includes a Command Program function in which the radio channel and addresses can be changed on-line from the serial port of the radio data modem. The changes are effected by means of a specific programming package (SL command), which is entered amidst ordinary data.