How is the battery voltage test performed on the CSE 102 detector?

The method for performing a battery voltage test on the CSE 102 detector is to press both buttons and confirm that the voltage falls between 3.5 and 4.0 volts. This range is significant as it indicates that the battery is functioning properly and has sufficient charge to operate the detector effectively.

In instruments like the CSE 102, maintaining battery health is crucial for ensuring accurate measurements and reliable performance. If the voltage reading falls below the specified range, it can signal that the battery is low or potentially faulty, which could lead to incorrect readings or failures in detection. Therefore, this specific range serves as an operational threshold, ensuring that the device continues to operate within its optimal parameters.

Other options involving different voltage ranges, holding a button, or using a voltmeter do not align with the correct procedure for this specific model.