TESTO 875 - Page 18

5 First steps
18
2. Remove lens.
3. Insert new lens, taking care to align the white markings on the
lens and the instrument with one another.
4. Turn the lens lock ring clockwise to the stop.
Always store lenses not in use in the container designed for this in
the case.
> Turn the lens ring clockwise to the stop, place the lens in the
container and close it.
Switch the imager on/off
1. Remove protection cap from the lens.
2. Press [ ].
- The start screen appears on the display. The type designation
of the imager and the firmware version are shown.
- The measurement view is opened after the warm-up period.
- The imager performs an automatic zeroing approx. every 60
sec. This can be recognized by means of a "click". The image is
frozen briefly when this occurs.
> To switch off: Press [
].
- The display goes out and the imager is switched off.
Manually focusing the image
> Turn Rotating ring of the lens until the image is in focus.
Record (freeze/save) image
1. Press [Trigger].
- The image is frozen (fixed image).
If the image is to be saved, the desired storage location can be set
using the left [Folder] quick select button, see Select the storage
location (folder): page 31.
testo 875-1:
• Infrared image is shown: Infrared image is saved.
testo 875-2:
• Infrared image or infrared/real image is shown: Infrared image
is saved, real image is saved in the same file as an attachment
to the infrared image.
• Real image is shown: Real image is saved.