Question: In 3GPP Base Station (BS) conformance testing for TDD, when declaring environmental conditions, what options does a manufacturer have if the equipment under test does not comply with the standard equipment classes?
Option 1: Declare a custom equipment class not referenced in IEC standards.
Option 2: Choose between IEC 60721-3-3 or IEC 60721-3-4, selecting the closest match.
Option 3: Declare relevant classes from IEC 60721 documentation specifically for Temperature, Humidity, and Vibration.
Option 4: Omit environmental condition declarations if not compliant with standard classes.
Explanation: According to the specifications, if a piece of equipment does not fit into the predefined equipment classes (as defined in IEC 60721-3-3 or IEC 60721-3-4), the manufacturer must declare the specific environmental conditions (Temperature, Humidity, and Vibration) from the broader IEC 60721 documentation that are relevant to the equipment under test. This ensures clarity on operational conditions even when standard classes aren't applicable.