Specifications

60
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.
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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.
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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-1' in the "YES" position. If operation is as
expected, don't change it.
¥ Note: The SG-235 does provide a way to by-pass tuning from memory
even with JP1 set to ÒYESÓ. To do this, the SmartLock PRO must be
installed. If the coupler tunes from memory and you want the coupler
to try to find a better setting, do the following:
1. Switch the SmartLock PRO to Tune Lock.
2. Press the reset button while in the Tune Locked LED is flashing.
3. Switch Tune Lock back to Normal
Now when RF power is applied, the coupler will proceed through the tuning
algorithm and when a solution is achieved, these setting will overwrite pre-
vious settings for that particular frequency.
To return to normal tuning from memory, simply press the reset button
while the SmartLock PRO is set on
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.
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P.O. Box 3526, 98009 Fax: [phone] Tel: [phone] or 1-800-259 7331
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© 1998 SGC Inc
SG-235 Manual