![background image](http://html1.mh-extra.com/html/jai/elite-el-2800c-ge2/elite-el-2800c-ge2_user-manual_631432071.webp)
EL-2800M-GE2 / EL-2800C-GE2
- 69 -
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(PIV)
Trigger mode: ON
Frame Start :
ON
Trigger option : PIV
In this mode, the setting of Trigger Overlap is invalid.
Frame Start Trigger IN
Exposure Timing
Exposure Active
FVAL
DVAL
td
te1
ift
te2 tframe 1
tframe1
tframe2
tframe 2
FVAL non active
Fig.40 PIV mode
Time name
Description
Time
td
Exposure beginning delay
424 clk
te1
First exposure time period
10 μs
~
2 s
te2
Second exposure time
1 frame
ift
Inter framing time
Width of XSG
FVAL non active
FVAL non active
4LVAL
tframe1
First Frame read out
1 frame
tframe2
Second Frame read out
1 frame