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GE TONOPORT V Service Manual page 24

Ambulatory blood pressure system
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8-2
Adjustment Instructions: Step-by-Step Instructions
Measure the direct voltages at TP2 and TP3. This is done by turning the
trimming potentiometer R59 with a screwdriver until the voltages at TP2 and
TP3 are 1.25 ±0.1 V. 
Press "INFO" four times, LCD indicates "H 4". 
Press "START" once, a 2-digit figure is displayed on the LCD.
Use a screw driver to turn the trimming potentiometer R53 until the LCD
indicates a value of 50 ±20.
Connect a reference pressure gauge, a rubber bulb and air container (0.5 L) to
the TONOPORT pressure connector and press "START".
TONOPORT V
2001589-094
Revision D

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