User manual

59
© 1999 SGC Inc
SGC Inc. SGC Building, 13737 S.E. 26th St. Bellevue, WA. 98005 USA
P.O.Box 3526, 98009 Fax: [phone] or 746-7173 Tel: [phone] or 1-800-259 7331
E-mail: [e-mail] Web site: http://www.sgcworld.com
CMD Host Value Description
Command OpCode Range
SOT OV sets an end-of-transmission. This causes an
ARQ link to finish sending any pending traffic
en then change to the link receive by sending
the +? group. Note that this command does not
merely stuff data into a buffer, but actually
checks and verifies that the link actually
changed over. If needed, it will repeat sending
+?. In FEC, this command finishes sending all
pending traffic and behaves like SOL.
SOV sets the "ovrflg" that allows the IRS to respond
or not to +?
SPE na na sets the CCIR-625 master timing. SGC's engi
neering personnel will determine the number
of ppm that the 25.576 MHz crystal (X3) is off.
This number will be multiplied internally by a
constant to convert ppm to clock correction
units to be added to the nominal value. This
correction factor need to be included in the
TNC's initialization file and be set up at boot
time along with other settings such as date and
time.
SPO P1 1/2 sets the radio port. 1 or 2 is valid. Internally
this is set as 0 or 1.
SRE sets the "repflg" to allow or disable relinking
after timeout.
SRP RX Y/N determines whether or not the receive polarity
needs to be normal or inverted. SRP 0, is for
normal polarity, SRP 1 is for inverted polarity
SRS RS na Resets the DSP and loads a fresh copy of the
DSP CCIR-625 modem code. All modem
working parameters (port, gains) is reset.
STP determines whether or not the transmit polarity
needs to be normal or inverted. STP 0, is for
normal polarity, STP 1 is for inverted polarity
STS na na enters a test mode where alternating mark and
space are sent. Exit from test with DED, SOL,
or SOT commands.
TAF na na tests AFSK by cycling through the various
AFSK tones. A new tone is emitted each time
the command is executed.