Tech Note 19 Detail

Voltages on channels suddenly read very 'high' or very 'low' and stay pegged

Affected Products:

CI-6500 NOT A VALID PART NUMBER

Problem/Symptom:
After using a non-PASCO sensor with the interface, the input reads either very 'high' or very 'low' and stays pegged.

PASCO Solution:
Replace resistor R20 on the PC board of the interface box. This resistor is designed to protect the computer. If the board begins to draw too much current from the power supply (e.g., if there is a shorted sensor connected to the interface), this resistor blows before other components or the computer can be damaged.

Creation Date: 01/1/2000
Last Modified: 07/21/2003
Mod Summary: