10
FOCUS ADJUSTMENT
Remove the cap from the objective lens and
rotate the focus adjustment ring as necessary
to achieve the proper focus at various dis-
tances.
COMPASS CALIBRATION
When the compass needs to be
calibrated the word “CAL” appears
instead of the Compass Scale.
To calibrate you should rotate the
device in three axis as pictured
below.
NOTE
After calibrating the device
please remember that the com-
pass will work best when hold-
ing the OTS-HD parallel to the
ground.
Other possible Errors:
• ERR — an error was detected (you may need to restart the device or recalibrate
the compass);
• SMF — your device is under Strong Magnetic Field (please, move away from
the Magnetic Field);
• UPD — your firmware needs to be updated.
FOCUS
ADJUSTMENT
RING
