Utilization of 2x Magnifier Lens
Your NVD-NORS210 (type equipped
with the objective 64mmF/1.2)
can be used with an optical 2x
magnification lens in order to
obtain doubled magnification.
The lens (identified as 2x)
doubles focal length of the
objective. It is fixed on a
setting thread under the light filter of the objective
(outer side of the objective). To take off a cover (12) from
the body of the device (1). The 2x lens must be tightly
fixed screwing it to the rest.
NOTES.
When 2x magnification lens is used in an active mode
(with IR illuminator) partial darkening of the field of
view will be observed, since the 2x lens has a large
diameter of the objective. In order to avoid this
effect (in case of simultaneous utilization of the
device with IR illuminator and 2x lens) it is
recommended to order the device with Z-like form of the
illuminator.
When a 2x lens is ordered for the device with already
implemented adaptation for a rifle, the opportunity of
installment of 2x lens should be checked, since its
diameter exceeds the diameter of the objective and
equals 80mm.
Components
Your NVD-NORS210 (NVD-NORS220) is delivered with the
following components:
-Device
1pc
-Lens
cap
1pc
-Built-in IR illuminator 75 mW
1pc
-Rubber
Eyepiece
Guard
1pc
-Adaptor rail (Standard prism or Weaver type)
1pc
-Camera/video adapter ring (52mm/37mm)
2pc
-Operation
manual
1pc
-Carrying
Case
1pc.
Additional accessories (not included in a standard set):
-2x Magnification Lens (for NVD-NORS210 only)
Installation of Batteries
Your NVD-NORS210/220 works from
two AA batteries. Be sure that
the batteries are in good
condition and they are installed
in accordance with the picture
on the battery compartment.
To replace the batteries it is
necessary to turn off the unit,
remove the cover of the battery compartment and replace old
batteries with new ones, keeping polarity of the batteries.
NOTE.
To ensure the longest operation time of the device and
full power of the IR illuminator (using one set of
batteries) it is recommended to use alkaline
batteries. These batteries possess the most stable
characteristics of a current consumption when their
power capacity is reduced.
Testing of Operation in Daytime
In order to test operation of the device you can turn it on
with the closed cover in daytime. Cover of the device has a
hole small enough to test the operating condition of the
device. When the device is turned on the observed picture
appears on the screen in a yellow-green color.
NOTE.
The device won’t burn out even if you open the cover
of the objective. When the light is excessively bright
protection will be activated and the image will
curtail. When the device is placed in a dark place the
image will be restored in several seconds.
CAUTION.
The device is not supposed to be directed toward
bright sources of light: bright lamps, the sun,
welding and etc – it may result in the reduction of
the coefficient of brightness magnification of the
device. In order to avoid the fatigue of photo-
