Specifications

SG-231 MANUAL
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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 settings will overwrite previous
settings for that particular frequency. To return to normal tuning from memory,
simply press the reset button while the SmartLock Pro is set on Normal.
9.0 SmartLock Pro Operation
The SmartLock Pro allows the operator to have additional control over the SG-231. It is
not required for normal operation of the coupler.
9.1 Tune, Tune Lock, and Reset
Tuned (green LED) Turns on when the coupler has successfully tuned.
Normal/Tune Lock Toggle switch that allows user to prevent coupler re-tuning
by switching to the Tune Lock position. When in the Tune
Lock position, the red LED blinks to notify the user that the
coupler is locked on the current setting.
Reset
Pushing the red reset button allows the coupler to be reset.
This is preferable to the other method of turning the input
power off and on.
9.2 SmartLock Pro Notes
The Tune Lock function is in most cases unneeded. Inadvertent re-tuning is a rare
occurrence. Re-tuning may occur when the environment or antenna system has
changed. In this case, re-tuning is within normal operation of the coupler. However,
the function is still provided with the SG-231 to be used if desired.
The SG-231 can also override the Tune From Memory jumper setting. In some cases, a
recalled setting from memory may yield a VSWR less than 2:1 but may not be the best
setting attainable. For this situation, the coupler can be forced to re-tune and store the
new settings in memory.
To do this, first switch to the Tune Lock position and then push the reset button. Now,
switch back to Normal position. This activates the Tune From Memory by-pass. Every
new frequency transmitted on will cause the coupler to re-tune and store the new
setting in memory, overwriting any previous settings. To return to normal Tune From
Memory, simply push the reset button while in Normal Position.