Why did my Data Recorder stops responding after 10 or 15 minutes?

You probably have the standby timer set for 10 or 15 minutes. If you don’t press any keys for that length of time, the Recorder goes into low power standby mode to save battery power. To wake it up, press the Change key. If you want to change your standby timer setting, connect the Recorder to your computer and run the Manager program. Choose Edit Settings – Standby Timer, then enter a standby delay of days, hours, or minutes.