Technical information

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boxes, or other components containing electronic parts.
Avoid spilling all corrosive fluids on exposed surfaces;
otherwise damage will result (e.g. shorting out of piezo tube
scanners). In case of a spill, immediately clean and dry all
affected surfaces thoroughly.
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• Do not overfill the fluid cell.
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• Do not allow solvents to splash on the scanner tube or
wiring at the center of the scanner body: certain
components (e.g. wiring insulation) may be dissolved, causing
scanner failure.
IV. PIEZOS
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• On the scan control panel, avoid Offset voltages
outside of +/-150V for periods of more than one hour.
When possible reset them to zero. Piezo crystals can be
damaged by having large DC offset voltages applied to them
for long periods of time. In the Realtime/Scan controls
panel there are parameters called X offset and Y offset. The
voltages which correspond to these values can be seen by
selecting Units : Volts in the Other Controls panel.
(NOTE: the X offset and Y offset will change when a Zoom
In/Out or Offset command is used).
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• Keep the Z-center near zero volts. The offset voltage on
the z-piezo (line-by-line average) is displayed by the Z-center
position indicator bar on the Display monitor. It should also
be kept low (between +/- 150V) when possible. After
engagement, it can be adjusted by using the Motor / Step
Motor command. (Tip Up goes more positive, if nothing
happens, keep clicking. If necessary, increase the Step Size to
overcome mechanical backlash). Another means is the