FLIR identiFINDER R300, Руководство пользователя

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6.30. Finder Settings FLIR Detection
Settings and Commands
Available
Choose “Yes” to enable selection of Finder mode or “No” to disable.
Integration Time
Specify the time for which the FLIR identiFINDER R300 should average the measured count
rate.
You can choose from 1 s – 2 s – 5 s.
The smaller the value, the more lively the display; the larger the value, the better the chance
to ind weaker sources.
Sensitivity
Specify the sensitivity for audible feedback in Finder mode (see 4.2 , p. 88 ). You can specify
values from 50 to 200 %.
While in Finder mode, the FLIR identiFINDER R300 emits sound when the count rate rises
above a threshold 𝐶 which is represented by the dashed line across the top of the Finder
display (Figure 90 , p. 89 ).
The threshold is related to the average background count rate ⟨𝐵𝐶𝑅⟩ (measured when you en-
ter the Finder mode), its variation 𝜎 = ⟨𝐵𝐶𝑅⟩ , and the sensitivity you specify here according
to
𝐶 = ⟨𝐵𝐶𝑅⟩ + 3.5 ∗ 𝜎 ∗
100
Sensitivity [%]
This equation is solved for some common values of the background variation 𝜎 in Table 2 ,
p. 158 . Look up the sensitivity value next to the desired 𝜎 and enter it.
Table 2.
Finder Mode: Background variation vs. sensitivity
𝜎 Sensitivity [%]
7 50
6.5 54
6 58
5.5 64
5 70
4.5 78
4 88
3.5 100
3 117
2.5 140
2 175
1.75 200
158 identiFINDER
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R300/en/2014.4(13623)/Feb2015