EOTech CNVD-T2 Clip-On Night Vision Device - Thermal 2 - Manual (Page 38)

2-16
2.16 CALIBRATION (CAL)
NOTE
Failure to cover the objective lens prior to initiating
a calibration may result in a distorted picture or the
presence of ghost images in the eyepiece display.
Activating the CAL menu item initiates a calibration of the
CNVD-T2. After prolonged use, or after transitions from one
temperature extreme to another, a degradation of the
thermal image may be noticed. When this occurs, the
CNVD-T2 should be calibrated as follows:
1. Flip the objective lens cover over the objective lens to
block out all available light.
2. Activate the CAL menu item.
3. The message “CALIBRATING” will appear as the unit
performs the calibration. Once complete, the message
will disappear and the CNVD-T2 will revert to normal
viewing mode.
4. Flip the objective lens cover up to rest on the top of the
CNVD-T2 housing.
The CNVD-T2 is equipped with an internal sensor that
detects significant changes in temperature. When this
condition occurs, the message “RECAL” will appear in the
eyepiece display, indicating that the operator should perform
a calibration of the CNVD-T2 as described above.