Teledyne ProEM Series, System Manual

Page: 89 / 162

89
Chapter 6: Advanced Topics
Previous chapters have discussed setting up the hardware and the software for basic
operation. This chapter discusses topics associated with experiment synchronization.
Synchronization, is configured on the Experiment Setup
►
Timing tab in WinX/32 and
on the Shutter and Trigger expanders in LightField.
• Section 6.1, Frame Transfer/Full Frame Timing {Trigger Response} Modes and
Shutter Control {Shutter Mode}
discusses Timing Modes {Trigger Response} and
Shutter Control {Shutter Mode}.
• Section 6.2, Fast and Safe Modes on page 95 discusses the Fast and the Safe
modes. Fast is used for real-time data acquisition and Safe is used in WinX when
coordinating acquisition with external devices or when the computer speed is
not fast enough to keep pace with the acquisition rate.
• Section 6.3, LOGIC OUT Control , on page 97 discusses the Ext Sync and Logic
Out connectors on the rear of the ProEM. The levels at these connectors can be
used to monitor camera operation or synchronize with external equipment.
• Section 6.4, Kinetics Mode , on page 98 discusses Kinetics mode. This form of
data acquisition relies on mechanical or optical masking of the CCD array for
acquiring time-resolved images. In addition, topics related to the special
Spectra-Kinetics mode are included. Refer to
Section 6.5, Spectra-Kinetics
(Option) on page 106 for complete information.
• Section 6.6, Custom Modes , on page 108 discusses the Custom Chip {Custom
Sensor} and Custom Timing modes. These modes allow you to specify an active
sub-area of the CCD array and/or a faster vertical shift rate for the purpose of
increased frame rate (pixels outside of the area are not read). Custom Chip
{Custom Sensor} mode requires mechanical or optical masking of the array to
prevent smearing.
6.1 Frame Transfer/Full Frame Timing {Trigger Response} Modes
and Shutter Control {Shutter Mode}
The basic ProEM timing {Trigger Response} modes for Frame Transfer and Full Frame
operations are Free Run {No Response}, External Sync {Readout Per Trigger}, Bulb
Trigger {Expose During Trigger Pulse} and Trigger Start {Start On Single Trigger}. These
modes are combined with the Shutter Control {Shutter Mode} options to provide the
widest variety of modes for precision experiment synchronization. The shutter options
available for Frame Transfer and Full Frame operations are Normal, Disabled Opened,
and Disabled Closed.
Disabled simply means that the shutter will not operate during the experiment. Disabled
closed is useful for making dark charge measurements. PreOpen {Open Before Trigger},
available in the External Sync and External Sync with Continuous Cleans {Clean Until
Trigger} modes, opens the shutter as soon as the ProEM is ready to receive an External
Sync pulse. This is required if the time between the External Sync pulse and the event is
less than a few milliseconds, the time it takes the shutter to open.
The shutter timing is shown in the timing diagrams that follow. Except for Free Run {No
Response}, where the modes of shutter operation are identical, both Normal and
PreOpen {Open Before Trigger} lines are shown in the timing diagrams and flow chart.