If you go to download or configure a first generation LogTag, and you see a red X next to Locate cradled LogTag(s), it means that LogTag Analyzer could not find a connected Reader.
The first thing to check is that the Reader’s USB cable is actually connected to your computer.
To test whether your fixes have worked, click on the Rescan button at the bottom of the Download or Configure panel.
Your computer uses a small piece of software called a driver to tell it how to communicate with the Reader. Sometimes that driver can get stuck or stop working.
The easiest fix is to reboot the computer. Close all your programs down, and restart the computer. The driver should reload as the computer boots up. Test again.
If the driver file has completely corrupted for some reason (very rare), you will need to re-install the LogTag Analyzer software.
You can download the latest version of the software and find installation instructions on this page.
Tried everything? The problem might be your computer. Try installing the LogTag Analyzer software on another PC, and connect the Reader to that computer.
Latency, when it comes to temperature logging, refers to the delay between a change in temperature and when that change is detected and recorded by the logger. This delay can be due to the sensor’s design, the materials it’s placed in, or the logging interval. While it might sound like a disadvantage, latency can actually serve a useful purpose in certain environments—particularly where short-term temperature spikes are common but not harmful.
For example, in a busy commercial fridge, the temperature may briefly rise every time the door is opened. A logger with high latency won’t immediately react to these short fluctuations, helping to avoid unnecessary alarms or false data indicating a problem when there isn’t one. In these cases, a slight delay in response acts like a filter, focusing attention on real issues—such as prolonged exposure to unsafe temperatures—while ignoring the everyday ups and downs that don’t affect product quality or safety.
Depending on the type of logger you have, connecting your logger to your PC means either:
First Generation LogTags use a separate Reader (sometimes called a dock) for configuration and for downloading recorded data.
The Second Generation loggers only require a USB port or cable. Apart from saving the cost of the Reader, this makes them much better suited for shipping, because the recipient doesn’t need a LogTag Reader to download a report about the shipment’s journey.
