Doric Instruments 475 Series Portable Digital Calibrators Calibration Manual - Manual

Model 475
3.1 CALIBRATION PROCEDURE
Equipment Required:
Precision resistance decade box: resolution, .01 ohm; accuracy, + .02%.
Precision milliamp source: resolution, 1 uA; accuracy + .01% (+ 2uA).
Potentiometer adjusting tool.
Figure 3-1. Potentiometer Adjustment/Testpoint Locations
R53
R52
R33
R27
R5
R10
R7
R2
R24
R19 R17