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Why the Upper and Lower Thresholds in the Temperature Query Command Output on the AR Router Are Different from the Operating Temperature Range in the Product Documentation?

Publication Date:  2019-07-17 Views:  105 Downloads:  0

Issue Description

The AR provides a command for querying the temperature of the device. The command output contains the normal temperature range. The AR109GW-L is used as an example. In the command output, the lower temperature threshold is 0°C, and the upper temperature threshold is 91°C. However, the operating temperature in the product documentation is in the range from 0°C to 40°C. Why are the queried thresholds different from the operating temperature range in the product documentation?

Lower and upper temperature thresholds queried on the device:

Operating temperature range in the product documentation:

Handling Process

The temperature in the command output is the real-time temperature measured by the temperature sensor on the SRU of the device. The operating temperature described in the product documentation is the ambient temperature of the device.

After the device is powered on, the temperature measured by the temperature sensor is higher than that of the ambient environment due to heat generated by the device. As a result, the temperature is different from that in the product documentation.