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2203 Service document ,
later Fet/silicon,op-amp version .
Applications booklet and user manual added .
 

Attachments

  • 2203.pdf
    7 MB · Views: 32
  • 2203 manual.pdf
    17.9 MB · Views: 28
  • 2203 Precision Sound Level Meter (Instruction manual) (April 1977).pdf
    15.2 MB · Views: 18
Last edited:
Schematic for the 2203 valve version, datasheet for the valve and a service note.
 

Attachments

  • 2203 Precision Sound Level Meter (Service instruction).pdf
    5.1 MB · Views: 15
  • CK512AX.pdf
    568.7 KB · Views: 10
  • precision-sound-level-meter-2203 Sch2.pdf
    917.6 KB · Views: 11
Some interesting differences between serial numbers , the valve cathode follower being the obvious one , also inductor based eq's in the earlier , gyrator /op amp based in the later unit .
 

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