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CV-A33CL
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6.4.1. Continuous Operation (Non triggered)
Mode settings can be done with RS-232C. Trigger Mode Normal. TR=0. It is for applications where
the camera is continuous running without external trigger. The shutter mode can be normal or
programmable exposure. (SM=0, SM=1). The shutter will work in all 8 steps up to 1/20,000
second or with the programmable exposure in 2 to 493 steps. In programmable exposure the
actual exposure is 1 LVAL less than the PE value.
In windows scan (WS=1), shutter times longer than the actual frame time have no meaning. The
exposure will be equal the frame time.
To use this mode:
Set function: Trigger mode “Normal” TR=0
Shutter mode “Normal” or “Programmable” SM=0, SM=1
“Shutter Speed” SH=0 through 7
“Programmable exposure” PE=2 through 493
“Windows” “Full” or “Windows scan” WS=0, WS=1
Polarity and other functions
Important notes on using this mode.
• The line at the end of the exposure period (SM=0, SM=1) will have a slightly lower signal
level. (About 10%). It is caused by the CMOS. (With SH=1/250 the line is seen in the
middle of the image).
For timing refer to 6.2.2. and 6.2.3. Fig. 14. and fig 15.
For windows scan timing refer to 6.2.5 and fig.17 through fig.19.
6.4.2. Edge Pre-select Mode
The exposure will start 28 µsec. after the trigger leading edge, and it stops and is read out after
the shutter time selected. It can be the 8 steps in normal or 2 to 493 steps in programmable.
SM=0 or SM=1. In programmable exposure the actual exposure is 1 LVAL less than the PE value.
This mode will operate with full window or windows of interest scanning.
An EEN pulse will indicate the active accumulation time, and a FVAL pulse indicates that the
resulting video is read out.
To use this mode:
Set function: Trigger mode “Edge Pre-select” TR=1
Shutter mode “Normal” or “Programmable” SM=0, SM=1
“Shutter Speed” SH=0 through 7
“Programmable exposure” PE=2 through 493
“Windows” “Full” or “Windows scan” WS=0, WS=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 >1 LVAL to <3 FVAL. (>16.8 µsec. to <25 msec.)
• A new trigger can be applied before FVAL is low as long as the exposure will be on for
longer than the FVAL high period. Refer to 6.2.4
For timing refer to 6.2.2. and 6.2.3. Fig. 14. and fig 15.
For windows scan timing refer to 6.2.5 and fig.17 through fig.19.
For LVAL a-synchronous accumulation refer to 6.2.4 and fig 16.