There are four possible explanations:

1. It was manufactured before 2008, which is when it became auto-id.
2. If you are trying to use a Drop Counter with a LabPro, the Drop Counter will not auto-id. This is because the firmware in the LabPro pre-dates the digital auto-id function, and is true for all Drop Counters.
3. The Drop Counter does auto-id properly with LabQuest or LabQuest Mini; however, it may be necessary to click File, New to orient the axes properly.
4. A bad cable between the drop counter and the interface can cause Auto-ID to fail. If you have multiple units, methodically switch sensors, cables,  and interface to be certain where the problem is.

In Logger Pro, all of these problems are easily fixed by opening an experiment file from the “Probes and Sensors” folder that uses the Drop Counter.

If the Drop Counter does not auto-id it will not work directly with Graphical Analysis. Data may be read through a LabQuest 2 or LabQuest 3 using Data Sharing.