User Manual

Controlling image capture
Guppy PRO Technical Manual V4.0.0
153
Exposure time (shutter) and offset
The exposure (shutter) time for continuous mode and Trigger_Mode_0 is
based on the following formula:
Shutter register value x time base + offset
The register value is the value set in the corresponding IIDC 1.31 register
(SHUTTER [81Ch]). This number is in the range between 1 and 4095.
The shutter register value is multiplied by the time base register value (see
Table 128: Time base ID on page 245). The default value here is set to 20 µs.
Exposure time of Guppy PRO F-503 (CMOS)
The exposure time of Guppy PRO F-503 can be set in row time increments.
The formula for the row time is:
The minimum row time and the row time by maximum resolution are:
The shutter time of Guppy PRO F-503 can be extended via the advanced reg-
ister: EXTENDED_SHUTTER
For more information see Chapter Extended shutter on page 246 and Table
129: Advanced register: Extended shutter on page 246.
Formula 7: Row time for Guppy PRO F-503 (CMOS)
Formula 8: Min. row time and row time at max. resolution for Guppy PRO F-503 (CMOS)
t
row
10.42 ns width + 9.375 µs=
t
row min
10.042 µs=
t
row max res
36.375 µs=