FocusLynx Hand Control Quick Start
199 Smith Street · Lowell, Michigan 49331 · U.S.A.
Telephone: 616-897-9351 · Fax: (616) 897-8229 · Toll Free: 888-488-0381
FocusLynx Hand Control - Revision 4
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undesirable backlash. Turning off backlash compensation will disable this behavior but is not
recommended since most geared motors will have at least twenty steps or more of inherent backlash.
Holding the IN or OUT button down will first move the motor one step, then 0.2 seconds later continue
into a low speed move. If the button remains held down for 2-1/2 seconds the motor will shift into a
higher speed mode. Backlash compensation will be taken up in the initial button press only. Releasing
the button will immediately stop the focuser movement.
Fine Focus Knob
FocusLynx Hand Controllers sold after May 2017 include a Fine Focus
Knob with rotary encoder for improved tactile feedback during manual
focus. The Fine Focus Knob is designed for easy reach with your thumb
for one-handed operation. Alternatively, you can use two hands if this
is more comfortable. The Fine Focus Knob is designed so that clockwise
rotations move the focuser OUT while counter-clockwise turns move
the focuser IN.
The Fine Focus Knob offers three speeds – 1X for single step resolution, 10X for ten step movements
with each encoder tic, and 100X for high speed and longer travel moves. Press the Fine Focus Knob to
toggle between 1X, 10X, and 100X speeds. The Temperature display will change to the current speed
while the rotary encoder wheel is actively being used.
You will find that using the Fine Focus Knob is much more intuitive and
responsive than using the buttons above. Without looking away from
your eyepiece, the rotary knob is easy to use and provides a much
higher level of precision than the IN and OUT buttons alone.
Sync Function
The Sync Focuser function will synchronize a non-homing focuser like the
QuickSync FT to the midpoint of available travel. This function is useful
when re-engaging the focus motor after a
visual session. Simply press and hold the
IN button to Sync F1 (Focuser 1) or the OUT button to Sync F2. After a
few seconds you will see a “Sync Succeeded!” message and the focuser
position will be synchronized to the midpoint of travel based on the maximum position value set in
FocusLynx Commander.
