HP 562A Operating Instructions Manual page 17

Model 562A
Section III
01081-1
consisting of a potentiometer connected as a variable shunt for the signal
which is fed to the graphic recorder.
If a potentiometer or galvanometer recorder is to be used which requires
slightly greater output voltage or current, it is possible to increase the
562A ANALOG OUTPUT by changing the values of certain resistors in
the analog circ ufts.
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