User's Manual

SATELLAR Radio Unit User manual v.0.7

2) SATEL NMS PC software

Once deployed status monitoring and configuration can be performed using a Windows

based SATEL NMS PC software through the RS-232/485 interface of the Radio unit. This

is also possible over the air: the status and configuration data of a distant radio modem

can be accessed through a radio connection.

Flexible and expandable

The SATELLAR concept has been designed to be flexible and expandable both in terms of

hardware and software functions. This can also be seen when using the Radio unit alone.

Modulation level

Several different modulation methods (2-, 4-, 8-, and 16-FSK) are offered. If the

customer requires a long range radio connection he/she selects a low level modulation.

On the contrary, if a high data rate is the primary concern a high level modulation must

be selected.

Channel width

Two different channel widths are supported and can be selected by changing software

settings – without a need to modify the hardware

FEC (Forward error correction) and interleaving

To extend the radio range in a noisy environment (at the expense of the data rate) a

forward error correction algorithm (FEC) can be used. The Radio unit offers two different

code rates for forward error correction. In packet mode of data transfer the forward error

correction is used together with interleaving to minimize the effect of errors occurring in

bursts. In the transparent mode the forward error correction is used without interleaving

to minimize the latency.

Adjustable output power

RF output power is adjustable with high resolution allowing the customer to select the

output power just according to the local conditions of the radio link.

Expansion units

Due to the modular mechanical structure of SATELLAR it is possible to add hardware expansion

units, even later as an update. Related to Radio unit the most relevant expansion units are:

 A booster unit for higher output power

 A serial port extender unit: a unit offering two or more serial ports, possibly of

different types (RS-232, -422, -485)

 I/O extension (for site monitoring and simple I/O control)

For the availability of different expansion units contact your local distributor.