User Manual

Controlling image capture
PIKE Technical Manual V5.1.2
216
Example: Pike F-032
register value x time base = exposure time
100 x 20 μs + 17 μs = 2017 μs exposure time
The minimum adjustable exposure time set by register is 1 μs.  The real mini-
mum exposure time of Pike F-032 is then:
1 μs + 17 μs = 18 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.
The lowest possible value of ExpTime is camera-specific (see Table 73: Camera-
specific minimum exposure time on page 215).
Pike F-505 1 μs 1 μs + 26 μs = 27 μs
Pike F-1100 1 μs 1 μs + 128 μs = 129 μs
Pike F-1600 1 μs 1 μs + 635 μs = 636 μs
Camera Register value Time base (default)
Pike F-032 100 20 μs
Table 74: Register value and time base for Pike F-032
Register Name Field Bit Description
0xF100020C EXTD_SHUTTER Presence_Inq [0] Indicates presence of this feature (read
only)
--- [1.. 5]
ExpTime [6..31] Exposure time in μs
Table 75: Advanced register: Extended shutter
Camera model Minimum exposure time Effective min. exp. time
= Min. exp. time + offset
Table 73: Camera-specific minimum exposure time