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Chapter 2 Getting Started 17
Power Input Module: This assembly, located at the lower right of the controller back
panel, has three functions:
• Connecting the AC power;
• Selecting the line voltage, and
• Protective Fusing.
Controller Modules: There are three controller board slots. Two are occupied by the
plug-in cards that provide various controller functions in all ST-133s. The
Programmable Timing Generator, if present, is installed in the third slot.
Otherwise the third slot is covered by a blank panel. The left-most plug-in card is
the Analog Control module. Adjacent to it is the Interface Control module.
The modules align with top and bottom tracks and mate with a passive
backplane. For proper operation, the location of the modules should not be
changed. Each board is secured by two screws that additionally serve to ground
each module’s front panel. A detailed discussion of how to remove and insert
modules is provided in Appendix F, which begins on page 83.
To minimize the risk of equipment damage, a module should never be removed or
installed when the system is powered.
If you should remove a module, take care not to overtighten the screws when you
reinstall it. They should be tightened with a screwdriver to where they are snug and no
further. Excessive tightening could damage the internal brackets.
Analog/Control Module: This module, which should always be located in the
left-most slot, provides the following functions:
• Pixel A/D conversion,
• CCD scan control,
• Timing and synchronization of readouts,
• Video output control, and
• Temperature control.
In addition to the 25-pin connector provided for the camera cable, there are four
BNC connectors and an LED, as discussed in the following paragraphs.
TEMP LOCK LED: This lights to indicate that the temperature control loop has
locked and that the temperature of the CCD array will be stable to within
± 0.05°C. The actual lower temperature limit that can be achieved will
depend on a number of factors, including the laboratory temperature, and
on whether the optional fan accessory has been installed.
WARNING
WARNING