About ACP Markers

The ACP Adjacent Channel Power: The power from a modulated communications channel that leaks into an adjacent channel. This leakage is usually specified as a ratio to the power in the main channel, but is sometimes an absolute power. marker easily performs generic Adjacent Channel Power Ratio (ACPR Adjacent Channel Power Ratio - A measurement of the amount of interference, or power, in the adjacent frequency channel. ACPR is usually defined as the ratio of the average power in the adjacent frequency channel (or offset) to the average power in the transmitted frequency channel. ACPR is a critical measurement for CDMA transmitters and their components. It describes the amount of distortion generated due to nonlinearities in RF components. The ACPR measurement is not part of the cdmaOne standard.) measurements. Adjacent Channel Power Ratio is the ratio of the power measured in the adjacent channels relative to the power in the reference channel. ACP is a figure of merit used to indicate the transmitters potential for interfering with a receiver on an adjacent (Upper or Lower) channel.

The ACP marker function can setup an ACP measurement to meet your specific test requirements. The ACP Marker tab configures the reference channel and up to 5 separate adjacent channels. The ACP marker readouts provide the power in the reference channel and the adjacent (lower and upper) channel power ratio (ACP) for the lowest numbered, selected channel.

There is also an ACP Summary Table that provides a complete set of measurement results including: the reference channels' bandwidth and power, and the adjacent (upper and lower) channels offset frequency, bandwidths, ACP, and maximum upper or lower adjacent channel ACP for each adjacent channel included in the measurement.