VCC-5CL1R
Rev. 905-0022-02
©2015 CIS Corporation. All rights reserved.
22
7.9.
Fixed Trigger Shutter Mode
□
This is the mode to start exposure with external trigger input signals, and set the exposure time with
serial commands.
□
Trigger operation is CLK-sync and HV-sync Reset..
□
The delay time (Exposure Time Delay) from detecting trigger edge to Exposure output (TTL) differs by
modes as shown below.
Exposure Time Delay
2Taps
4Taps
8Taps
10Taps
Horizontal 2560 pixels
51
µs
27
µs
15
µs
13
µs
Horizontal 2048 pixels
42
µs
22
µs
13
µs
11
µs
Horizontal 1920 pixels
39
µs
21
µs
12
µs
10
µs
*The value for 2x2 binning and 4x4 binning are the same as the one for horizontal 2560 pixels.
*With the above Exposure Time Delay, several dozen ns of jitter occur due to asynchronous loading.
*The actual exposure period is longer by approx. 1µs at the front and approx. 8µs at the end as shown
below.
□
The min. setting value of Fixed Trigger Shutter Mode is 1H (min.). (It depends on each camera mode
and horizontal pixels.)
□
The next trigger can be accepted during outputting the current image. However, while the image output
is on-going, do not input a trigger to start the next image output.
□
Any trigger input between Exposure Time start and Read-out start shall be ignored in the camera as
shown (A) below. When a read-out period (FVAL=1) and the exposure start (start-up of Exposure
Time) are overlapped, LVAL and DVAL output Low for 4H, and stop outputting images.
Effective Line : 2048H
Effective Line
～ ～
2
0
4
8
1
TRIG IN
LVAL Out
FVAL Out
Video Out
DVAL Out
～ ～
2
0
4
8
1
Effective Line
Exposure Time Delay
(A)
TRIG IN
SP Out
(Exposure Out)
Exposure time delay
Exposure Time
Trigger input ignore period
Effective Line
Invalid
Line
