Teledyne Princeton Instruments Lansis, Системное руководство

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Chapter 9 Full Frame Readout 63
EAR99 Technology Subject to Restrictions Contained on the Cover Page.
9.2.1.4.2 Always Closed
Figure 9-17 illustrates the timing diagram for Expose During Trigger Pulse mode
combined with Always Closed shutter mode.
Figure 9-17: Timing Diagram: Expose During Trigger, Always Closed
This mode is primarily used when acquiring a dark reference file. However, Lansis
typically runs at such a low temperature that the dark reference file is typically
unnecessary.
9.2.1.4.3 Always Open
Figure 9-18 illustrates the timing diagram for Expose During Trigger Pulse mode
combined with Always Open shutter mode.
Figure 9-18: Timing Diagram: Expose During Trigger, Always Open
This mode is typically used when an experiment does not support waiting for the
shutter to open. Ideally, the only light generated by the experiment is the signal of
interest (e.g., a dark chamber with a spark discharge.)
Open Before Trigger is closely
related.
** If Enabled
ACQUIRE
Clean
Until
Trigger **
Pgm’d
Cleans
TRIGGER
READOUT
t
R
t
R
EXPOSE
t
exp
t
exp
SHUTTER
Always
Closed
Wait For
Trigger
WFT WFT
44
11
-0
174
_
0
0
76
** If Enabled
ACQUIRE
Clean
Until
Trigger **
Pgm’d
Cleans
TRIGGER
READOUT
t
R
t
R
EXPOSE
t
exp
t
exp
SHUTTER
Always
Open
Wait For
Trigger
WFT WFT
44
11-
0
174
_0
077