Settings
Changing Parameters using the LCD Display
30
SRL-35 Operator’s Manual P/N: 1003224-01
•^: 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 the SRL-35 modem that has its TX1 address matching the
Local Address.
•^: Remote address=0…255 (255 by default, that is the broadcast address to be received
by all).
The SRL-35 modem
receives the message from a Pacific Crest modem, provided its
RX1 address matches the Remote Address of a Pacific Crest transmitter (or if the mes-
sage has the broadcast address 255).
The SRL-35 modem must have the following key settings:
• FEC OFF (because the FEC here means SATEL 3AS FEC, not Pacific Crest/TRIMTALK
FEC)
•Error check OFF
• Full CRC16 check OFF
• Radio Compatibility (according to selected Pacific Crest protocol mode setting)
– Pacific Crest 4-FSK
– Pacific Crest GMSK
– TRIMTALK GMSK, RX fitted to Pacific Crest transmitters
– TRIMTALK GMSK, RX fitted to Trimble transmitters
– PCC-FST
•Addressing:
• When TX address is selected ON, then TX1 address is used like PDL Remote
address that is the destination address for the transmitted messages.
• Default value is 0x00FF (=255) (note the hexadecimal format of the setting)
• When RX Address is selected ON, then RX1 address is used like PDL Local address
• Default value is 0x0000 (=0) (note the hexadecimal format of the setting)
The configuration tools and settings are different between SRL-35 and Pacific Crest modems:
• Pacific Crest modems are configured via the serial port using PDLCONF
Windows
TM
program that sends binary control messages to the serial port of the
modem.
Addresses are NOT applicable in TRIMTALK 450s mode so the SRL-35 modem must have its
RX/TX addresses OFF with Option3.
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