Mikrotron eosens TS3, User Manual, Page: 107 / 120

TS3 User Manual
page 98
Eventually, the circular bu ff er will fill up and o v erfl o w, but when it does, it continues t o keep the
newest images as it discards the oldest.
Referring back to Example 1 at the beginning of this section.
• The camera is focused on the balloon.
• It is recording images into its circular bu
ff er.
• The balloon pops.
The camera has captured the event, now you just need to make the camera stop before the images
are discarded. For this we use an
End Trigger .
Note: In photography, the term “trigger” is o ft en used in reference to the shu tt er--usually cameras
are triggered to take one image. In high-speed video capture, we use the term in reference to
controlling the acquisition of some (usually
v ery large) number of video frames.
With the camera configu r ed for an End Trigger the camera will fill its 20 f r ame circular bu ff er until
it gets a Trigger from the Trigger Bu tt on on the top of the TS3, from a Trigger signal received on the Sync
I/O connector, or from a soft w are application. A t that time it will S t op recording. The last frame recorded
will be given the number “0.” All previous Frames will be given sequential ne g ati v e numbers.
Played back, the resulting video begins on f r ame -19, progresses to frame 0, then stops. If the
camera did not run long enough to fill its bu ff er, it would still s top when it received the trigger and
the resulting video w ould be shorter, starting with a less ne g ati v e number (#-16 in the graphic
below).
-2
-3
-6
-5
-7
-4
-8
-9
-10
-1
-11
-12
-13
-14
-15
-16
-l7
-18
-19
0
TRIGGER
AND Stop!
-2
-3
-6
-5
-7
-4
-8
-9
-10
-1
-11
-12
-13
-14
-15
-16
0
TRIGGER
AND Stop!
Shift
Shift
R
E
N
E
.
W
O
L
D
>
E
R
<
<
<
>
R
E
N
E
.
W
O
L
D
>
E
R
<
<
<
>
Figure 10-6: Circular Buffer Fills and Images Shift Position
Figure 10-7: Circular Buffer Overflowing