Liemke MERLIN–35 2020 Mode D'emploi page 29

Malfunction
The thermal imager
cannot be switched
on. In the starting
process, the Merlin-35
(2020) switches
off again after the
start logo has been
displayed.
Can't be powered by
an external power
source.
The image is blurred,
with thin vertical lines
or shadows.
Low image quality/
reduced detection
range.
Error in attachment mode
The point of impact
cannot be adjusted
and the values are
not saved.
The image goes out
after the shot.
Point of impact is not
constant.
MERLIN-35 (2020) · Operating Manual 03 / 2021
Possible reason
Batteries are too weak.
USB cable is damaged.
Calibration needed.
These problems can occur under adverse
weather conditions (high humidity, snowfall, rain,
fog, etc.).
At temperatures above freezing, the observed
objects (surroundings and background) usually
have a higher temperature difference. This can
be shown by the thermal imager by setting the
contrast higher.
At low outdoor temperatures, the observed
objects cool down to approximately the same
temperature, so that the temperature contrast
is considerably reduced and the image quality
suffers as a result. This characteristic is due to
physical reasons and does not represent a defect
in the thermal imager.
Instead of the image
shift function, pixel cor-
rection was activated
in the submenu.
Minimum mounting
distance not observed
-
The parallax adjustment
on the target optics is
not set to infinity.
Minimum mounting dis-
tance not observed.
Correction
Insert new batteries/re-
chargeable batteries.
Replace USB cable.
Calibrate the image.
See section "Use in
attachment mode"
Check and correct
distance (see section
"Use in attachment
mode").
Check that the
clamping adapter and
assembly are fixed in
position.
Set the parallax ad-
justment on the target
optics to infinity.
Check and correct
distance (see section
"Use in attachment
mode").
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