CV-M2
- 20 -
6.4.3. Restart Continuous Trigger mode
The RCT mode is in principle the same as normal continuous mode. The difference is that an
external trigger pulse will immediately stop the video read out and reset and restart the vertical
timing. After a fast dump read out, a new triggered exposure is started and read out as normal.
The fast dump read out is performed with a speed 18 times faster for single output, and 10 times
faster for dual output. If no further trigger pulses are applied, the camera will continue in
normal mode. This fast dump read out has the same effect as “smearless read out”. Smear over
highlighted areas are reduced for the triggered frame.
The restart continuous trigger mode makes it possible to use a lens with video controlled iris in
intelligent traffic surveillance applications.
To use this mode:
Set function:
Trigger mode “Restart continuous trigger”
TR=2
LVAL synchronous accumulation
LS=0
Shutter mode “Normal” or “Programmable”
SM=0, SM=1
“Shutter Speed”
SH=0 through 9
“Programmable exposure”
PE=1 through 1216
Scanning format
SC=0 through SC=4
Output select
OS=0, OS=1
Polarity and other functions
Input:
Ext. trigger to Camera Link or pin 10 on 12-pin connector.
Important notes on using this mode.
•
The duration of the trigger should be >2LVAL to <3FVAL.
•
A new trigger must not be applied before the triggered data is read out.
•
1LVAL = 47.9
µ
sec (single). 27.3
µ
sec (dual).
•
The time for the fast dump read out (smearless) is 3.3 msec.
For horizontal timing refer to 6.2.3. through 6.2.6. (Fig.17. through fig. 20.)
For LVAL synchronous accumulation refer to 6.2.7. and 6.2.8. (Fig. 21. fig. 22.)
Fast
dump
Fig. 25. Restart Continuous trigger mode
Summary of Contents for CV-M2
Page 35: ...CV M2 34 ...
