Specifications
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FIGURE 310. IR ILLUMINATOR OPERATIONS
B
A
C
3.3.3 OPERATING UNDER CHANGING LIGHT CONDITIONS
If the ambient light level exceeds the limit of 100-300 lx for more than 10 s, the Sirius automatic protec-
tive system will shut o the intensier tube. If a mission must be carried out in changing light condi-
tions, the user can shut down the protective system manually by closing the photoreceiver (A) with the
pivotal focusing lens.
CAUTION:
DO NOT forget to open the photoreceiver after completing your mission.
FIGURE 311. PHOTORECEIVER
A
3.3.4 SIRIUS SHUTDOWN
1. Turn the function switch to OFF. The green glow of the viewing area will fade to black.
2. Secure the lens cap over the objective lens.
3. If necessary, remove the unit from the rail (from the scope lens). Remove the unit by following the
mounting instructions in reverse..
4. Unscrew the battery cap and take out the battery. Replace the battery cap. Do not store the unit with
the battery still in it.
5. Store the unit and all accessories in the case.