Allied Vision Technologies AVT Stingray Manual de instrucciones descargar pdf (Pagina 165)

Controlling image capture

STINGRAY Technical Manual V2.2.0

164

Minimum exposure time

Example: Stingray F-033

100 x 20 µs + 27 µs = 2027 µs exposure time

The minimum adjustable exposure time set by register is 4 µs.  The real

minimum exposure time of Stingray F-033 is then:

4 µs + 27 µs = 31 µs

Extended shutter

The exposure time for long-term integration of up to 67 seconds can be

extended via the advanced register: EXTENDED_SHUTTER

The longest exposure time, 3FFFFFFh, corresponds to 67.11 sec.

Camera model Minimum exposure time Effective min. exp. time

= Min. exp. time + offset

Stingray F-033 4 µs 4 µs + 27 µs = 31 µs

Stingray F-046 4 µs 4 µs + 27 µs = 31 µs

Stingray F-080 4 µs 4 µs + 45 µs = 49 µs

Stingray F-145 4 µs 4 µs + 70 µs = 74 µs

Stingray F-146 4 µs 4 µs + 35 µs = 39 µs

Stingray F-201 4 µs 4 µs + 44 µs = 48 µs

Table 60: Camera-specific minimum exposure time

Camera Register value Time base (default)

Stingray F-033 100 20 µs

Table 61: Register value and time base for Stingray F-033

0xF100020C EXTD_SHUTTER Presence_Inq [0] Indicates presence of this feature (read

only)

--- [1.. 5] Reserved

ExpTime [6..31] Exposure time in µs

Table 62: Advanced register: Extended shutter

1 2 ... 160 161 162 163 164 165 166 167 168 169 170 ... 308 309

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Allied Vision Technologies AVT Stingray Manual de instrucciones Pagina 165