Technical information

Mailing: PO Box 3526, Bellevue, WA 98009
Shipping: 13737 SE 26th St., Bellevue, WA 98005
Toll-Free: 800-259-7331 • Phone [phone] • Fax: [phone]
www.sgcworld.com • Email: [e-mail]
16
© 2001 SGC, Inc.
2:1
This LED will light when the VSWR is greater than 2:1. It will ex-
tinguish when VSWR is less than 2:1.
PHZ
This LED indicates the status of the antenna reactance. When lit, re-
actance is inductive. When off, reactance is capacitive.
FWD
This LED indicates the presence or lack of RF power from the radio.
When transmitting, the LED will light to indicate RF is being de-
tected. In receive, the LED should be extinguished.
OTHER
All LEDs will blink on and off at a rate of 2Hz to indicate the tuner
was not able to find a valid match.
Note that these status LEDs are usually used to aid a technician in
diagnosing the status of the antenna system and should not be
thought of as laboratory instruments.
As the Smartuner tunes, the BITE status will be continually updated
from the CPU.
6.0 Optional SmartLock
The SmartLock allows the operator to have additional control over
the SG-239. It is not required
for normal operation of the coupler.
One can be purchased by SGC or made per the description of the
schematic in paragraph 5.2. The SmartLock provides two basic func-
tions:
1. To lock the coupler in the last tune mode regardless of any
changes made by the operator on the transceiver or external changes
that may have occurred on the antenna. It is a very convenient func-
tion especially for instable antennas (such as whip antennas on a car
in motion) or instable situations due to a system installation or con-
figuration. However, using it in this mode may be hazardous as the
SG-239 Manual
page 16
Wednesday, October 17, 2001 08:31
Composite