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The AlA board assembly has two versions that have major differences. The change of the
The original AlA assembly (Instrument Serial Number Prefixes 2403A-3001A) is the Z Axis
Amplifier. It is used in conjunction with the AlA X Deflection Amplifier and the AlA Y
Deflection Amplifer.
The second version of the AlA assembly, the XYZ Driver Amplifier, replaces the original
above) incorporates the circuitry of the AlA X Deflection Amplifier and the AlA Y
Deflection Amplifier, and replaces the AlA and the AlA assemblies too. The new AlA
XYZ Driver Amplifier assembly, much larger than the original AlA assembly, uses the three
motherboard connectors used by the original AlA2, AlA and AlA assemblies.
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