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Chapter 3 Hardware Setup 67
Logic Out Output:
Beginning with Version 5, any of several different signals can
be selected to appear at the PentaMAX’s back panel Logic Out BNC connector.
Available choices include:
Cleaning:
This signal is high when an array Clean cycle is in progress and
otherwise low.
Logic 0:
Establishes a TTL logic 0 at the
Logic Out
connector.
Logic 1:
Establishes a TTL logic 1 at the
Logic Out
connector.
Note:
LOGIC 0 and LOGIC 1 can be used to control an external device using
the application software.
Not FT Image Shift:
This signal is low when a frame-transfer shift is in
progress and otherwise high.
Not Ready:
After a Start Acquisition, this output changes state on completion
of the array cleaning cycles that precede the first exposure. Initially high, it goes
low to mark the beginning of the first exposure. In free run operation it remains
low until the system is halted. If a specific number of frames have been
programmed, it remains low until all have been taken, then returns high.
Not Scan:
Reports when the controller is finished reading out the CCD array.
SCAN is high when the CCD array is not being scanned, then drops low when
readout begins, returning to high when the process is finished.
Shutter:
This signal is low when the shutter is closed and goes high when the
shutter is activated, dropping low again after the shutter closes. In Gated
operation SHUTTER MONITOR is the correct choice and the signal should be
applied to the inhibit input of the pulser to prevent pulsing during readout.
SHUTTER MONITOR can also be used to control an external shutter, although
some additional driver electronics will be required.
User Defined Chip:
See User Defined Chip discussion on page 80.
RS170 Type:
NTSC (US video standard) or PAL (European video standard).
Display page
See Display Page discussion on page 82.
Interface page
See the Interface tab page discussion on page 83.
Cleans/Skips page
See Clean/Skips tab page discussion on page 224.
Control Buttons:
OK, Cancel & Help:
These three buttons apply to the Hardware Setup window and are
available for all tab pages. Clicking
OK
implements the selections from all
pages. Clicking
Cancel
closes the Hardware Setup window, leaving the original
settings intact. Help opens context-sensitive help for the active tab page.