Pike Technical Manual
V5.2.0
209
Controlling image capture
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
on page 324). The default value here is set to 20 μs.
A camera-specific offset is also added to this value. It is different for the camera
models:
Exposure time offset
Minimum exposure time
Camera model
Exposure time offset
Pike F-032
17 μs
Pike F-100
42 μs
Pike F-145
38 μs
Pike F-145-15fps
70 μs
Pike F-210
42 μs
Pike F-421
69 μs
Pike F-505
26 μs
Pike F-1100
128 μs
Pike F-1600
635 μs
Table 72: Camera-specific exposure time offset
Camera model
Minimum exposure time
Effective min. exp. time
= Min. exp. time + offset
Pike F-032
1 μs
1 μs + 17 μs =
18
μs
Pike F-100
1 μs
1 μs + 42 μs =
43
μs
Pike F-145
1 μs
1 μs + 38 μs =
39
μs
Pike F-145-15fps
1 μs
1 μs + 70 μs =
71
μs
Pike F-210
1 μs
1 μs + 42 μs =
43
μs
Pike F-421
1 μs
1 μs + 69 μs =
70
μs
Table 73: Camera-specific minimum exposure time