Figure 40. Free Run Timing Diagram: Non-Overlap Mode - Princeton Instruments PhotonMAX System Manual

Chapter 6
Free Run
In Free Run mode, there is no external triggering and all settings are read from the setup
parameters, making the duration of each exposure time constant and the interval times
between exposures constant (see Figure 40).
Note: When running in Overlap mode, the effective exposure time will be the frame
readout time unless the set exposure time is greater than the frame readout time (as in
Figure 41).
External Sync
External Sync mode only operates in Non-Overlap mode. In External Sync mode, each
frame in a sequence requires a trigger. Each frame is exposed for the length of time
entered into the software and is then read out. If a trigger arrives during the exposure-
readout of the previous frame, it is ignored (see Figure 42). For a sequence of one frame,
strobe mode and trigger-first mode are the same. The shaded areas
time between exposures.
Advanced Topics
#1
Exposure
Frame Readout

Figure 40. Free Run Timing Diagram: Non-Overlap Mode

#1
Exposure
Frame Readout
Figure 41. Free Run Timing Diagram: Overlap Mode (t
Trigger In
#1
Exposure
#1
Frame Readout
Figure 42. External Sync Timing Diagram: Non-Overlap Mode
#2 #3
#1 #2
#2 #3 #4
#1 #2 #3 #4
Ignored
#2
#2
#4
#3 #4
#5 #6 #7
#5 #6 #7
>t )
exp R
denote the idle
#3 #4
#3
55
#4