NAC Image Technology MC-529, User Manual

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C3. Simple Synchronized Photography
Simple synchronized photography is possible using the exposure pulse output (EPO) signals with
multiple GX series cameras or fx series cameras with the exposure start signal (EST) input function.
Also, synchronized photography is possible using cameras with equivalent functions from other
companies.
Note ) Here, "simple" includes the possibility that the time accuracy is not guaranteed due to signal
delays or time shifts, and the restrictions on the same recording speeds for all of the cameras.
Simple synchronized photography is comprised of a system determined by master / slave cameras.
There is one master camera among all of the cameras used, and the rest are slave cameras. If the
GX series camera is the master camera, the exposure pulse output (EPO) for this camera is
connected to the exposure start signal (EST) input for all of the other cameras.
If combining the GX series and the fx series, since the fx series EST input specifications only allow
exposure to start with H
→
L edge signals, reverse output polarity is set on the master GX series
camera so the L level is output during exposure. Also, the EST input setting for the slave GX series
camera is H
→ L edge signals for the start of exposure.
If combining with cameras from other companies, refer to the manual to coordinate the signal polarity.
C4. Precautions
Since the exposure pulse output (EPO) signals are identical to the exposure time (shutter speed), the
pulse widths are narrowed when a short exposure time is set. Precaution is necessary for signal
transmission conversion to the proper interface and for the cable properties.
An incorrect pulse may be detected with the wrong method of use, and transmission may not be
possible due to the elimination of pulses.