User's Manual

SATELLINE-4Pro

User Guide v0.93 DRAFT

7.8.2 Configuration by using SL commands

“SL@S=” command selects the compatibility mode:

 ”SL@S=0” sets SATELLINE-3AS (default).

 ”SL@S=1” sets PCC-4FSK

 ”SL@S=2” sets PCC-GMSK

 ”SL@S=3” sets TRIMTALK GMSK, RX fitted to Pacific Crest transmitters

 “SL@S=4” sets TRIMTALK GMSK, RX fitted to Trimble transmitters

 “SL@S=5” sets PCC-FST

The modem responds with “OK” message if the requested mode is supported or “ERROR” if the

mode is not allowed.

“SL@S? enquires the active mode. The modem responds with a number:

 “0” if the mode is SATEL 3AS

 “1” if the mode is PCC-4FSK

 “2” if the mode is PCC-GMSK

 “3” if the mode is TRIMTALK GMSK, RX fitted to Pacific Crest transmitters

 “4” if the mode is TRIMTALK GMSK, RX fitted to Trimble transmitters

 “5” if the mode is PCC-FST

7.8.3 Settings

In order to use the Pacific Crest/TRIMTALK modes implemented in SATELLINE modems:

PACIFIC CREST modems must have:

 Protocol Mode =

 Transparent w/EOT Timeout (when using Pacific Crest modulations)

 TrimTalk 450s (when using TRIMTALK GMSK modulation)

 Transparent FST

 Modulation Type depends on the system

 GMSK (default, always selected when using TRIMTALK 450s mode)

 4-Level-FSK

 FEC = ON (FEC OFF state supported in PCC Transparent FST protocol implementation)

 Scrambling = ON

 Data Security Code set to = 0 (=not used)

 Local Address= 0…254 (0 by default)

Pacific Crest modem receives messages from SATELLINE modems that have their TX1

address matching the Local Address.

 Remote address=0…255 (255 by default, that is the broadcast address to be received by

all). SATELLINE modems receive the message from a Pacific Crest modem, provided their

RX1 address matches the Remote Address of a Pacific Crest transmitter (or if the message

has the broadcast address 255).