User's Manual Part 1

Radio Configuration

P/N 7010-0713

2-29

6. For a maximum data communication reliability, select the

Forward Error Correction checkbox. With this parameter

enabled, the rover radio-modem has the capability to check and

correct transmission errors (if any) in an incoming data stream.

NOTICE

While providing error control in data transmission, FEC

adds redundant check bits to the data stream reducing

data throughput. If you are going to use FEC and a format

of differential messages requires a great deal of data (e.g.,

RTCM 2.x) transmitted over the radio link, it is

recommended to select 19200@4-Level-FSK. This will

ensure reliable radio communication between the base

and rover receivers.

7. From the Protocol Mode control, select the appropriate link

protocol among the following available:

• Transparent w/EOT Character

• Transparent w/EOT Timeout

•Fast Async

8. If you select Transparent w/EOT Character, the EOT

Character (Dec) field will be displayed. In this field enter a

decimal value (usually a control character). Once the specified

character is found in the incoming data stream, the modem begins

data transmission.

If you select Transparent w/EOT Timeout, the TX ACK

Timeout (in x10 ms) field will be displayed. In this field enter an

integer value between 1 (corresponds to 10 ms) and 50

(corresponds to 500 ms). Once the timeout between incoming

data exceeds the specified value, the modem begins data

transmission.