
12
Operational status of the coupler and the onboard computer's tuning decisions
is displayed by 7 LED's, which are located on the control computer cover on
the main printed circuit board (PCB). These indicators are only visible when
the cover of the coupler is removed. The function that each LED indicates is
described in Section 7 of this manual. These 7 LED's are not designed to be
interpreted by other than factory and trained service personnel.
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The SG-230 is supplied in a weather proof case with two mounting brackets. RF
and DC power are supplied to the unit through the same cable. This special
cable consists of a 50 ohm coaxial cable and four conductors. The four con-
ductor wires are for the ground, the positive power lead, the optional
SmartLock control and optional LED indicator.
The SG-230 antenna coupler's weatherproof case is designed to withstand the
environmental conditions encountered aboard ship when mounted on the
weatherdecks. The internal construction is designed to withstand the shock
and vibration of marine service. Corrosion-resistant hardware and passive
a l l o y s a r e e m p l o y e d t h r o u g h o u t . W e d o n o t r e c o m m e n d o p e n i n g t h e
Smartuner case unless it is necessary. For 99% of installations, the factory set-
tings for jumpers will be correct. The coupler must be installed in an area not
directly exposed to the sunshine or rain. Should you have occasion to open the
case, it must be re-sealed under low humidity (below 35%) and care used to
SGC Inc. SGC Building, 13737 S.E. 26th St. Bellevue, WA 98005 USA
P.O. Box 3526, 98009 Fax: 425-746-6384 Tel: 425- 746-6310 or 1-800-259 7331
E-mail: [email protected] Web site: http://www.sgcworld.com
© 1998 SGC Inc
SG-230 Manual
CAUTION:
Dangerous high voltages exist inside the Smartuner when it is oper-
ated with an HF transmitter. High RF voltages in excess of 10 kv
may be expected in normal operation of this unit. In addition to
shock hazard, these RF voltages may produce burns which are very
painful if you come in contact with exposed components. Therefore,
DO NOT operate without the cover secured in place unless you are a
well experienced radio technician or engineer.
As a matter of good installation and engineering practice, exposed
metal antenna elements should be located in such a manner as to
prevent accidental contact with people (especially young children),
pets, and small animals.