GE TONOPORT V Service Manual page 25

Revision D
Adjustment Instructions: Step-by-Step Instructions
Using the rubber bulb, generate a pressure of 100 mmHg in the tubing system

and watch the LCD.
Using a screwdriver, turn the trimming potentiometer R40 until the LCD

indicates a value of 100. 
Also check the values indicated on the LCD at the following pressures 

(max. permitted deviation for each measurement: ±2 mm Hg):
50 mmHg 
TONOPORT V
2001589-094
8-3