User manual

translate SITOR FEC (forward error correction) traffic from anoth-
er station. The unit will also allow SITOR ARQ link requests in
this mode of operation.
8.4.2.1 FEC Operations
FEC operation are "one-way" forms of communications.
This can be convenient for "round table" operations involv-
ing more than one other stations. There are only three active
controls required for FEC operation. There are Page Up
which places the TNC into transmit mode, Page Down
which places the TNC into receive mode after the appropri-
ate idle sequence and the End Key which provides a format-
ted changeover to receive mode.
To operate in FEC mode, first place the TNC into the
appropriate mode using the Menu, right mouse click or spe-
cial key option. Then press Page up to go into the transmit
mode. When ready to receive press Page Down.
You may PANIC Kill the transmitter at any time by pressing
the HOME key.
8.4.2.2 ARQ Operations
ARQ operations are characterized as two stations in a
"linked" QSO. The advantage of ARQ operation is that it is
virtually error free. When a station does not receive a data
frame correctly it will "REQUEST" a repeat of the data
frame.
8.4.2.2.1 Linking to Another Station
Press ALT-C and enter the SELCAL of the desired
station press enter when ready.
8.4.2.2.2 Killing a Link
To force kill a link,. press the HOME key. This will
drop the link immediately. This places the SG7200
into a “dead” mode. To be able to accept calls,
place the SG7200 into SITOR Standby mode using
the appropriate entry in the SITOR menu.
8.4.2.2.3 Ending a QSO
Press either ALT-D (this sends the END QSO text)
or ALT-SHIFT-D (sends no additional text). The
ALT-D text can by modified in the AMTOR/SITOR
tab of the Operating parameters menu option. This
is located under the SETUP menu.
© 1999 SGC Inc
SGC Inc. SGC Building, 13737 S.E. 26th St. Bellevue, WA. 98005 USA
P.O.Box 3526, 98009 Fax: 425-746-6384 or 746-7173 Tel: 425- 746-6310 or 1-800-259 7331
E-mail: sgc@sgcworld.com Web site: http://www.sgcworld.com
36