Teledyne Princeton Instruments PI-MAX 3, System Manual

Page: 87 / 250

Chapter 7 Operation 87
7.12 Logic Out Control
The TTL-compatible logic level output (0 to +3.3 V
DC
) from the LOGIC OUT connector
on the rear panel can be used to monitor camera status and control external devices. By
default, the logic output level is high while the action is occurring.
Figure 7-15 illustrates the WinX/32 dialog on which Logic Out is configured.
Figure 7-15: Typical WinX/32 Hardware Setup
►
Hardware
►
Controller/Camera Tab
Dialog
The timing of the level changes depends on the output type selected on the
Setup
►
Hardware
►
Controller/Camera tab {Trigger expander}:
• Acquiring {Acquiring}
After a start acquisition command, this output changes state on completion of
the array cleaning cycles that precede the first exposure. Initially low, it goes
high to mark the beginning of the first exposure. In Focus mode operation it
remains high until the system is halted. If a specific number of frames have been
programmed, it remains high until all have been taken and then returns low.
Figure 7-16 illustrates the timing diagram for key control signals when three
frames have been programed.
Figure 7-16: Timing Diagram: Logic Out Control, Key Control Signals
4
4
11
-0
129
_
003
0
Acquiring
{Acquiring}
Open Close Open Close Open Close
Shutter
{Shutter Open}
Read Read Read
Read Out
{Reading Out}
(Data
transferred)
(Data
transferred)
(Data
transferred)
texp tR tc
4
4
11
-0
129
_
004
2