If typical operation is out of band duplex, '"YES'" would be most likely to give
better performance. If in band operation is typical and duplex or simplex is
the predominant mode of operation, then 'NO' is usually the better choice.
9
9..6
6
JJ--3
3 -- T
Tu
un
ne
e ffr
ro
om
m m
me
em
mo
or
ry
y
(( F
F A
A C
C T
T O
O R
R Y
Y d
d e
e ff a
a u
u ll tt S
S E
E T
T T
T II N
N G
G :: Y
Y E
E S
S ))
Y
Y E
E S
S
In this position the tuner will recall data previously saved and
try this data before attempting to re-tune. If the data is valid and the
VSWR is less than 2:1 the tuner is done. In this position the tuner will
save new data in its' memory for any frequency. A new frequency
must first be learned, while in this mode, before it can be recalled.
N
NO
O
In this position, the tuner will not use previously saved tuning data.
Each time a different frequency is selected the tuner will proceed
through a complete tuning sequence.
Clearly, the advantage of "YES" is speed. The tuner will seem to be matched
instantly when in this position, if the frequency being used has previously
been memorized in this mode. Obvious disadvantages include a difference in
frequency too small for the computer to detect. This would result in recall of
valid data that may not necessarily present the best match.
It is suggested to start with 'J-3' in the "YES" position. If operation is as
expected, don't change it.
¥
Note: You cannot re-tune any information from the memory if the
memory has not been previously loaded. The memory can be loaded
only in the 'YES' function.
1
10
0..0
0 T
Tr
ro
ou
ub
blle
es
sh
ho
oo
ottiin
ng
g tth
he
e S
SG
G--2
23
30
0
Only a small number of installation mistakes can be made. These will fall
into one of several categories: ground fault, cable fault, and antenna fault.
There is also a slight chance of an electrical fault in the coupler.
When you are troubleshooting the SG-230 and you understand that there are
three variables, you should change each variable, in sequence, to determine
where the problem lies. If you change the ground, antenna, or supply volt-
age, you are bound to change the performance of the coupler.
61
© 1998 SGC Inc
SG-230 Manual
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