CV-L105
6.2. Trigger modes
Internal Trigger. Scan mode.
The camera will operate continuously with its internal trigger.
The exposure is equal to the scanning time set by the SCAN parameter via
Internal Trigger. Shutter mode.
The camera will operate continuously with its internal trigger.
The scanning time is set by the SCAN parameter via
The exposure is set by the SHUTTER parameter via
SCAN value 150 ∝s through 32.5 ms. SHUTTER value 1 ∝s through 32.35 ms.
External Trigger. Scan mode.
For every EXT TRIG input the ongoing integration period is terminated and charge is read out. At the same time it starts a new cycle.
The exposure time is therefore dependant of the line rate.
SHUTTER and SCAN parameters has no meaning here.
Trigger pulse width (high period) >4 clk. *) Trigger interval >2120 clk to ∞
External Trigger. Shutter mode.
The exposure time is governed by the low period of the EXT TRIG signal. Exposure starts at the falling edge of the EXT TRIG signal and ends with the rising edge. The integration time is independent of the line rate. SHUTTER and SCAN parameters has no meaning here.
Trigger pulse width (high period) >4 clk. *) Exposure time (low period) >2102 clk to ∞
*) 1 clk is 33.3 ns for 30 MHz clock 1 clk is 66.6 ns for 15 MHz clock
Exposure time =SCANvalue
Exposure
Data out
LEN
Scan interval = SCANvalue
Exposure time
= SHUTTER value
Exposure
Data out
LEN
Trigger 
Exposure time
Exposure
Data out
LEN
Trigger 
Exposure time
Exposure
Data out
Fig. 11. Internal and external trigger modes.
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