EL-2800M-PMCL / EL-2800C-PMCL
- 37 -
t1
t2
Trigger
CCD
Exposure
Exposure
Active
FVAL
DVAL
Fig.30 RCT mode timing
7.8. PIV (Particle Image Velocimetry)
The Particle Image Velocimetry mode can be used in applications where 2 images need to
be taken with a very short time interval. It can only be used with strobe flash as
illumination. The first accumulation time is 10
sec to 2 sec. Then, the second exposure
will be taken. The accumulation is LVAL asynchronous. The first strobe is activated during
the first exposure duration and the second strobe is pulsed while the first frame is being
read out. In this way, two strobe flashes generate two video outputs.
Primary Settings
Exposure Mode:
Timed
Trigger Mode: ON
Trigger Option: PIV
In this mode, the setting of Trigger Overlap is invalid.
Table - 23
Minimum trigger interval (1X2–2YE, 8-bit)
4-tap output
FULL
2/3 ROI
1/2 ROI 1/4 ROI
1/8 ROI
1/2V
Binning
Minimum frame lines
(Timed Exposure Mode/Trigger Mode OFF) x 2
+ Exposure Time + 1
Output format
t1
t2
1x2-2YE, 1X-2YE
194L
4.5L
~
5.5L
1X2–1Y, 1X – 1Y
384L
4.5L
~
5.5L