HT instruments THT70 - Manual (Page 14)

THT70
EN - 12
5.1.2 Image rotation and zoom
The instrument allows performing complete rotations (0
 360°) and has a digital electronic
zoom function “x1
 x20” of the framed IR image. To use these functions, proceed as
follows:
1. Touch the symbol “ ” on the display. The instrument shows the following menu at the
bottom of the display:
Fig. 7: Menu for setting image rotation and zoom
2. Press the “ ” key to activate the zoom function. The indication “0° / 1.1” is shown on
the display and the image is zoomed in 10% more with respect to the original image.
3. Touch the “ ” or “ ” keys to increase or decrease the image zoom with a
resolution of 10%. Zoom range 1.1
 20.0
4. Touch the “ ” key to restore normal image view.
5. Touch the “ ” key to activate rotation. The indication “1°/1.0” appears on the display
6. Touch the “ ” key to rotate the image clockwise of the “ ” key to rotate the image
counterclockwise with a resolution of 1°. Rotation range 0°
 360°
7. Touch the “ ” key to restore normal image view.
8. Touch the “OK” key to quit the menu.
5.1.3 Adjusting the distance of the object in Fusion screens
In “IR_MIX_VIS” and “VIS_MIX_IR” display mode (see § 5.2.3.1), due to the different
position of the lens and of the built-in photo camera, when the object is close to the lens,
the visible image tends to become bigger, while the IR image tends to reduce. When the
object is more than 5m far from the lens, this effect tends to disappear The instrument
allows setting the distance of the object in order to compensate the effect at distances
shorter than 5m. Proceed as follows:
1. Select the “IR_MIX_VIS” or “VIS_MIX_IR” display on the instrument (see §). The
instrument shows the following screens:
Fig. 8: Adjusting the distance of the object in Fusion screens
2. At the top of the display, the instrument automatically shows the symbol “ ”, where
the value indicated inside the square represents the last value set for distance.
3. Press and hold for 2 seconds the key to set the value of distance of the lens from the
object. The following values are available: 1/2m (0.5m), 1m, 2m and 5m