Kantronics KPC-9612 Plus, Руководство пользователя

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When OFF (i.e., half duplex), carrier detect status is used to determine channel
availability. When ON, the modem is run full duplex, and carrier detect status
does not inhibit transmission. The full duplex mode may be useful especially for
satellite operations using a duplex radio setup. Full duplex should not be used un-
less both you and the station you are communicating with have full duplex capa-
bility. LOOPBACK is the same as half duplex (i.e., FULLDUP OFF) as far as
protocol operation is concerned, but the receive circuit is still active; this allows
you to connect a simple wire between the transmit and receive pins on the radio
connector to verify operation of the modem circuitry.
GPSHEAD n string (n = 1-4) (string up to 8 chars)
default 1 $GPGGA ( string 2, 3, and 4 = <blank>)
This command determines which GPS NMEA sentences will be stored in the LT
buffers. n (1-4) determines which buffer will be used to store the data, and string
is a NMEA sentence header.
When the header is received from the GPS unit, the TNC will store up to 128
characters in the associated LT buffer.
+ To clear one of the four strings, enter the buffer number, n (n = 1-4), and nothing
else, then press the ENTER key.
See also: blt, lt, ltp, ltrack
GPSINIT string (string up to 128 characters)
default (blank)
This command establishes a string which will be sent to the attached GPS unit
upon power-up (i.e., initial text sent to terminal in GPS Mode). This may be use-
ful to configure your GPS unit to provide only the information you require. Some
GPS units may require more than one sentence; consult your GPS unit manual.
To send more than one, enter a <Ctrl+N> at the end of each sentence, and the
TNC will send a CR/LF sequence to the GPS unit. A single % will clear the
string.
TNC Commands Command Reference
KPC-9612 Plus v 8.2 233 User’s Guide