3-6
3.2.4. BRIGHTNESS
Press BRIGHTNESS + and BRIGHTNESS – buttons for bright-
ness adjustment. Each short push of the buttons BRIGHTNESS
+ or BRIGHTNESS – raises or lowers the display brightness, cor-
respondingly, in stepwise way.
NOTE
Levels 1 to 8 range from full dim to full bright.
3.2.5. ZOOM
ZOOM button activates a digital zoom function.
TheThORdefaultdigitalzoomis1X.WhenZOOMbuttonispushed
first time, the scope will display a scene magnified 2X. To reset the
magnification to the 1X press ZOOM button again.
3.2.6. MANUAL IMAGE REFRESH
Degradation of the image (image blurring) is caused by charge ac-
cumulation on the detector array.
Use the TOUCH UP button to maintain an optimum thermal image.
During this refresh, the video will freeze for approximately 0.5 se-
cond.
NOTE
While performing very frequent Refreshes can provide the best
possible image quality but also can decrease substantially the
battery life.
FIGURE 3-5. TOUCH UP BUTTON
TOUCH UP BUTTON