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6.5. Edge Pre-select Mode
The trigger leading edge will start the exposure H synchronous or H a-synchronous (HC=0, HC=1).
The exposure stops and is read out after the shutter time selected. It can be the 10 steps in
normal or 1056 steps in programmable. SM=0 or SM=1. This mode will operate with full and
partial scanning and with V-binning (M4
+
and M4CL
+
only). Partial scanning and binning in
combinations is not allowed.
In this mode the Restart Continuous Trigger mode (RC=1) can be activated. (By RS-232C and CL
only). The camera is then running continuously, and it can be reset and restarted by the trigger
pulse.
If smearless read out (SL=1) is used, the exposure starts with a delay 133H (5.23 msec.) after the
trigger. An EEN pulse will indicate the active accumulation time, and a FEN 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 9
“Programmable exposure” PE=0 through 1057
“H synchronous trigger” HC=0, HC=1
“Restart Continuous Trigger” RC=0, RC=1
“Smearless readout” SL=0, SL=1
Polarity and other functions
Input: Ext. trigger to LVDS/Camera Link or pin 10 on 12-pin connector.
Important notes on using this mode.
• The duration of the trigger should be >2H to <3V. (>72.64µsec to <120msec).
• The minimum trigger interval should be >(exposure time + 1 frame). A new trigger must
not be applied during the previous frame read out. (Before FEN is high).
• Smearless readout cannot be used together with Reset Continuous Trigger.
Fig. 20. Edge Pre-select