Channel Power (CHP)

Without AMK, measuring total integrated power in a defined channel bandwidth requires setting the span appropriately, selecting the right RBW, placing markers at the channel edges, and either reading integrated band power from a marker function or exporting trace data for integration. The AMK channel power measurement sets up the integration bandwidth, selects optimal RBW/VBW for accuracy, and reports both absolute channel power (dBm) and power spectral density (dBm/Hz) in a single automated measurement. For an engineer running through a matrix of 15 operating frequencies and 3 power levels, this saves minutes per measurement point—which adds up to hours across a full transmitter characterization cycle.

Adjacent Channel Power Ratio (ACPR)

ACPR is arguably the most important regulatory measurement for any transmitter. It quantifies how much energy your transmitter is leaking into adjacent channels—the number that determines whether your device passes FCC/ETSI spectral emissions requirements or goes back for redesign. Without automation, ACPR requires carefully configuring main channel and offset channel bandwidths, ensuring the measurement span and RBW are appropriate for the standard, and reading the ratio between main channel and adjacent channel power. The AMK ACPR measurement handles all of this automatically: set your standard (or define custom channel/offset widths), and the analyzer reports main channel power plus left and right adjacent channel power ratios. When you're iterating on PA linearization and need to check ACPR after every DPD coefficient adjustment, one-button measurement versus manual setup is the difference between making progress and watching a loading bar.

Occupied Bandwidth (OBW)

Every wireless transmitter has an allocated bandwidth, and regulators require that 99% of the transmitted power (or the X-dB bandwidth, depending on the standard) falls within defined limits. The AMK OBW measurement calculates this automatically using either the N% power method or X-dB-down method per ITU-R SM.443. It also reports transmit frequency error—the offset between measured center frequency and expected center frequency—which is a critical parameter for oscillator stability verification and regulatory compliance.

Harmonics Analysis (2nd through 10th)

Hunting harmonics manually means tuning to each harmonic frequency, adjusting the reference level to see the harmonic above the noise floor (possibly engaging the preamplifier), noting the power level, then calculating the ratio to the fundamental. For a 1 GHz transmitter, that's potentially checking 2 GHz through 10 GHz—nine separate measurements with different optimal analyzer settings at each frequency. The AMK automates this entire sequence: specify the fundamental, and it measures power at the fundamental through the 10th harmonic, reports each harmonic in dBm and dBc relative to the fundamental, and calculates total harmonic distortion (THD). On the UTS7000A, the 2 Hz to 40 GHz frequency range means you can characterize harmonics of signals up to 4 GHz through the 10th harmonic without running out of frequency coverage—a practical advantage over 26.5 GHz analyzers that hit their ceiling at the 5th harmonic of a 5 GHz signal.

Third-Order Intercept (TOI)

TOI measures the linearity of your signal chain using a two-tone test. Manual TOI measurement requires generating two closely-spaced tones, carefully measuring the power of the fundamental tones and their third-order intermodulation products (IM3), then calculating the TOI point. The AMK automates the detection and measurement of both fundamental tones and IM3 products, reporting the TOI directly. This is invaluable during amplifier development when you're evaluating bias points, matching networks, or linearization techniques and need rapid TOI feedback.

Carrier-to-Noise Ratio (CNR)

CNR measurement compares carrier power to the noise power in a specified bandwidth—a key metric for communications link quality assessment and receiver characterization. The AMK automates the channel and noise bandwidth configuration and reports C/N directly in dB.

Time-Domain Power (T-Power)

For zero-span (time-domain) measurements, T-Power integrates power over a user-defined time window. This is essential for characterizing burst transmitters—measuring the average power within a TDMA burst, the power ramp profile of a TDD transmission, or the peak-to-average power ratio of a modulated carrier.