Nightfox PROWL Gebrauchsanweisung Seite 14

16. Troubleshooting
Issue
Prowl does
not turn on
Image quality
on LCD
screen is
poor
⚫ Screen
displays, "No
SD card"
even when
an SD has
been
inserted
⚫ Picture is out
of focus
Unit powers
on briefly or
not at all
Possible cause
Rechargeable
battery has expired
Diopter and/or
focus dial have not
been adjusted
IR is not set to off
for daytime use
IR is not on for
night time use
The inserted
memory card is not
formatted
correctly for the
Prowl or has
corrupted
Manual focus wheel
has not been
adjusted
Insufficient battery
power
Action
If the Lithium-ion battery is not
holding its charge, it will need to
be replaced. See section 15.
Adjust the eye relief and focus
dial at every use to ensure
optimum image quality.
IR is not needed during daylight
hours, and should be turned off.
See section 9.
In dark conditions, ensure an IR
level from 1 to 5 is selected. Use
IR to increase.
"Lunarsight" (IR0) can be used if
there is some ambient light or an
external source of IR.
If "Disable IR LEDs" has been
selected, IR will not increase
above IR0. Reset by navigating to
Settings mode → IR settings.
Enter Settings mode and format
the memory card (see section 12).
To sharpen the image, rotate the
diopter at the front of the unit.
Plug the unit in and leave to
charge, even if nothing shows on
the screen. After an hour has
passed, try turning on again.
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