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②
Recording rate setting: Click
▼
and select the useful recording rates from the
following indicated list:
50, 125, 250, 500, 1000, 2000, 4000, 8000f/s.
2000f/s and higher rates are optional.
At the higher recording rate the image size (number of effective pixels of the CCD) is
reduced, and the field of view is reduced, then the size of the playback images on
the video monitor also reduces.
Table 4-1-1 shows the recording rate and image size.
Table 4-1-1
Recording rate
Image size
50, 125, 250 f/s
512 (h)
×
472 (v) pix
500 f/s
512 (h)
×
232 (v) pix
1000 f/s
256 (h)
×
212 (v) pix
2000 f/s
256 (h)
×
98 (v) pix
4000 f/s
128 (h)
×
88 (v) pix
8000 f/s
128 (h)
×
34 (v) pix
As the image size is reduced, an offset develops between the center of the recording
area of the CCD, and the lens optical axis. So, when the recording rate (image size)
is changed, you must adjust the camera position relative to the subject.
When you enter a memory segment setting, any image recorded in memory will be
lost. Therefore, if there is a recorded image in memory, first save the image before
entering the segment setting.
③
Shutter setting: Click
▼
and select the shutter speeds from the following values
corresponding to the motion speed of the subject.
OPEN, 1/250, 1/500, 1/2000, 1/5000, 1/10000, 1/20000, 1/50000, 1/100000 second
Shutter “OPEN” is available at recording rate of 250 f/s or more and exposure time is
1/rate.(e.g., if the recording rate is 250 f/s, then “OPEN” corresponds to 1/250
second).
Increasing the shutter speed eliminates blurring due to motion but more illumination is
required.
Содержание VFC-1000
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Страница 74: ...62 7 2 External Dimensions All dimensions shown in mm...