Question: In a global in-channel TX test for a User Equipment (UE), which of the following parameters is classified as a "residual" type measurement result, indicating an error value with an ideal magnitude of zero?
Option 1: RF Frequency
Option 2: Error Vector Magnitude (EVM)
Option 3: Code Domain Power (in case of multi-code transmission)
Option 4: Timing
Explanation: Error Vector Magnitude (EVM) measures the difference between the ideal and actual constellation points in a signal, essentially quantifying the error in signal transmission. Since its ideal value is zero (indicating no error), EVM falls under "residual" type measurement results. In contrast, RF Frequency, Code Domain Power, and Timing are parameters that quantify integral physical characteristics of the signal with non-zero magnitudes, classifying them as "deviation" types.