Spectra-precision ADLCONF User Guide Manual de usuario descargar pdf (Pagina 20)

ADLCONF User Guide

CSMA

ADL radios are configured in the factory to have the CSMA feature (Carrier Sense Multiple

Access) set to ON. It is illegal to transmit in the United States while CSMA is turned off.

When CSMA is activated, the radio will “listen” on the selected transmission frequency

for any broadcasts. (The selected transmission frequency is indicated in the Radio Link

screen’s Current Channel field.) If no broadcasts are detected, the radio will transmit any

data received on its serial interface. If a radio signal is detected on the selected frequency,

the radio will not transmit but waits 3.3 milliseconds before checking again if it is clear to

transmit. It continues checking until the frequency is clear.

Use Forward Error Correction

Select this check box to place extra bits in the transmitted data, so that other ADL

radios receiving the data can check for transmission errors. Although data throughput is

adversely affected, using forward error correction can greatly improve range; Pacific Crest

strong recommends that you use this feature.

The check box is unavailable (grayed out) if you use Trimble protocols, which do not

support forward error correction. Select the protocol type from the Serial Interface tab.

Advanced settings

Click Advanced to access the following controls:

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Spectra-precision ADLCONF User Guide Manual de usuario Pagina 20