ALLIED Vision Technologies Guppy F-503 - Manual (Page 183)

Controlling image capture
GUPPY Technical Manual V7.1.0
183
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
minimum 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 66: Register value and Timebase for GUPPY F-033
Register Name Field Bit Description
0xF100020C EXTD_SHUTTER Presence_Inq [0] Indicates presence of this feature (read
only)
--- [1..5] Reserved
ExpTime [6..31] Exposure time in µs
Table 67: 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) param-
eter in
Table 37: Format_7 Mode_1: output parameters (inter-
laced, frame) on page 105.