Allied Vision Technologies Guppy Manuel d'instructions télécharger pdf (Page 157)

Guppy Technical ManualV7.4.0

157

Controlling image capture

Example Guppy F-033

100 x 20 μs + 109 μs = 2109 μs exposure time

The minimum adjustable exposure time set by register is 20 μs.  The real min-

imum exposure time of Guppy F-033 is then 20 μs + 109 μs = 129 μs.

Extended shutter

The exposure time for long-term integration of:

• up to 67 seconds for the CCD models

• up to 979 ms for the Guppy F-036 (CMOS model)

• up to 2.3 seconds for the Guppy F-503 (CMOS model)

can be extended via the EXTENDED_SHUTTER register.

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

Camera Register value Timebase

Guppy F-033 100 20 μs

Table 60: Register value and Timebase for Guppy 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 61: Extended shutter configuration

Note



Minimum shutter time for interlaced models in Format_7

Mode_1 is limited to the duration time of one field

(33/25 ms) see description of Shutter (integration) parame-

ter in Table 31: Format_7 Mode_1: output parameters (inter-

laced, frame) on page 82.

1 2 ... 152 153 154 155 156 157 158 159 160 161 162 ... 267 268

Pas de commentaire

Allied Vision Technologies Guppy Manuel d'instructions Page 157