EOTech CNVD-T (SU-232/PAS) Clip-On Night Vision Device - Thermal - Manual (Page 31)

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Activating the CAL menu item initiates a calibration of the
CNVD-T. 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-T should be calibrated as follows:
a. Install the objective lens cover over the objective
lens to block out all available light.
b. Activate the CAL menu item as shown below.
c. The message “CALIBRATING” will appear as the
unit performs the calibration. Once complete, the
message will disappear and the CNVD-T will revert
to normal viewing mode.
d. Remove the objective lens cover to resume normal
viewing.
Figure 2-10 Menu – Calibration (CAL)
The CNVD-T 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-T as described above.
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CAL
RETINT
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