Managing the Radio Modem
P/N 7010-1004
3-17
In free channel scan mode, the Base radio modem will regularly
scan the current operating frequency to determine the degree of a
radio noise (interference). Should the level of noise on the current
operating frequency be greater than the threshold specified in this
field, the transmitter will stop broadcasting and switch to the next
frequency. It can be Off (default), Master, Slave, Repeater,
Master + Repeater, or Slave + Repeater.
• Protocol - selects a modulation type for the base radio modem
from Satel 3AS (default), PacCrest 4FSK, PacCrest GMSK w/
EOT.
• Satel FEC - (Forward Error Correction) enable to maximize data
communication. The rover radio modem has the capability to
check and correct transmission errors (if any) in an incoming data
stream.
• Spacing, kHz - shows the channel step. It can be 12.5, 20, 25.
• Pressing the Refresh button renews the list.
• Pressing the Import button imports settings from a file.
• Pressing the Export button saves settings in a file.
• Pressing the Load button writes new setting into the modem.
4. When finished configuring the radio modem, always disconnect
from TRU before exiting to prevent conflicts with serial port
management.
To properly communicate, the Base and Rover
radios require the same settings for Current
Frequency, Signal Threshold Level, FCS, Spacing,
and so on.
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