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Chapter 6
Advanced Topics
Introduction
Previous chapters have discussed setting up the
hardware and the software for basic operation.
This chapter discusses topics associated with
experiment synchronization (set up on the
Experiment Setup|Timing tab in WinView and
WinSpec).With the exception of Edge Trigger, the
topics are addressed in order of their appearance
on the Timing tab (see Figure 21).
"Timing Modes", the first topic, discusses
standard Timing Modes, Shutter Control, and
Edge Trigger. Also included under this topic is a
discussion of the EXT SYNC connector, the input
connector for a trigger pulse.
"Fast Mode and Safe Mode", the second topic,
discusses the Fast and the Safe speed modes. Fast
is used for real-time data acquisition and Safe is
used when coordinating acquisition with external
devices or when the computer speed is not fast
Figure 21. Timing tab
enough to keep pace with the acquisition rate.
"TTL Control", the final topic, discusses the TTL IN/Out connector on the rear of the
ST-133 and how commands can be sent via TTL levels to and from the ST-133.
Timing Modes
The chart to the right lists the timing mode
combinations (selected on the Experiment
Setup|Timing tab). Use this chart in
combination with the detailed descriptions in
this chapter to determine the optimal timing
configuration.
The basic timing modes are Free Run,
External Sync, and External Sync with
Continuous Cleans. These modes are
combined with the Shutter options to provide
the widest variety of timing modes for
precision experiment synchronization.
Mode
Shutter
Free Run
Normal
External Sync
Normal
External Sync
PreOpen
External Sync with
Continuous Cleans
Normal
External Sync with
Continuous Cleans
PreOpen
Table 3. Camera Timing Modes
The shutter options available include Normal, PreOpen, Disable Opened or Disable
Closed. Disable simply means that the shutter will not operate during the experiment.
Disable closed is useful for making dark charge measurements or when no shutter is
present. PreOpen, available in the External Sync and External Sync with Continuous