Teledyne Princeton Instruments PI-MAX 3, System Manual

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Chapter 10 Timing Generator Pulses and Sequences 149
10.2.1 Supported Timing Generator Trigger Modes
PI-MAX3 supports the following Trigger Modes:
• Trigger per Pulse
Each pulse of the single sequence is initiated by its own trigger.
NOTE:
All triggers must originate from the same source and all
must be either internal or external.
See Figure 10-4 .
Figure 10-4: Timing Diagram: Sequence with 3 Repetitions and Trigger per Pulse
Supported Trigger Sources are:
• Source 1
This is the Timing Generator’s internal trigger. Each pulse set of the sequence is
initiated by the timing generator's internal trigger.
• Source 2
External Trigger input on the TRIGGER IN BNC. Each pulse set is initiated by an
external trigger.
10.3 Time Stamping
Time Stamping provides the ability to include the following timing data with each frame
of acquired data:
• Exposure Started;
This time stamp indicates the time control is passed from the camera FPGA to
the timing generator, not the actual image intensifier gate time.
Once control is passed to the timing generator, the timing generator waits for a
trigger or triggers (internal or external, as configured by the user.) The timing
generator then executes the timing the user has selected.
When the timing generator completes its task(s), control is then returned to the
camera FPGA.
• Exposure Ended.
This time stamp indicates the time when the timing generator returns control to
the camera FPGA.
The resolution for PI-MAX3 time stamps is 1

s.
TRIGGER
PULSES
EXPOSE
CCD
EXPOSE
PULSE SET PULSE SET PULSE SET
READOUT
TG_DONE
SEQ_DONE
AUX I/O
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