The shortest collection time allowed is 30 minutes. This means that every 30 minutes the Gateway can collect data from the sensors within its Bluetooth range.
It is important to know the difference between the concept of collection time and sample interval. The first concerns the Gateway, while the second is a setting chosen for a DynaLogger. The measurements collected by a DynaLogger, obtained according to the sample interval, are saved in the DynaLogger’s internal memory until the Gateway, based on the defined collection time, collects and clears the memory of the DynaLogger.