- Records sound or vibration levels
- Records DC voltages
- External control of pen, paper feed, and marker functions
- Measurement with coordinated paper feed
- Operates in sync with level processing equipment
When the measured sound or vibration level exceeds a certain threshold, paper feed can be automatically increased for easier reading of the recorded information.
This saves paper and is useful for example in train and airplane noise measurements or other situations where non-continuous events are to be recorded.