User manual

correct tone polarity. If for any reason, operation is needed for use
on lower sideband (LSB) or alternate transmit or receive polarities
Identification and SELCALs for ARQ or SELFEC can be any 4
digits, 4 letters, 5 digits, or 9 digits depending on the application.
When the SG-7200 is used to participate in CCIR standard “free
signal” broadcasting systems, an additional field follows the SEL-
CAL that controls the operation of the free signal.
If the SELCAL is 4 letters, these form a CCIR476 call. If the SEL-
CAL is 4 or 5 digits, a CCIR492 translation to CCIR476 is done. If
the SELCAL is 9 digits, a CCIR625 translation is performed. If
there is no "/" after the SELCAL, the call is made repeated for 60
sec. If there is a "/" followed by two letters after the SELCAL, the
call will be preceded by a period in which the modem listens for
the channel-free block formed by the two letters.
6.0 Host Computer Operations
The SG-7200 could be operated either in command mode or alternatively by a
GUI program running on a remote host computer.
• The GUI mode presents windows, menus, and popup boxes on the screen
for ease of use with the computer mouse and keyboard. SGC offers Windows -
based GUI software package designed for operation with the SG-7200.∑
This manual explains the command-line interface of the SG-7200. This is a
very terse interface but is the simplest and most powerful method of communi-
cating with the SG-7200. A dumb terminal or PC-based communications pro-
gram such as Procomm, CrossTalk, Carbon Copy, or Windows’ Hyperterm
may be used to communicate with the SG-7200 through the SG-7200 Host
Computer serial communications port.
7.0 SG-7200 Setup for Amateur Radio Modes
This section describes how to set up and configure the SG-7200 hardware and
also how to customize various operating parameters used for the digital com-
munication modes.
7.1 Using the Command-Line Interface
Setting up the SG-7200 through the command line interface is shown in
the following steps:
•Decide which radio port you will use for the radio.
•Plug the radio cable into that port in the back of the SG-7200 SMART-
MODEM unit.
•Connect your computer to the HOST COMPUTER RS-232 in the back
of the unit and run the communication program.
•Turn the power on and a boot-up screen displays the following:
© 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
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