Non-Harmonic Spurious

M9384B

Non-harmonic spurious responses are unwanted signals that are not related to the fundamental output frequency of the DUT. They are produced by the internal frequency synthesis of the DUT. This test utilizes a signal analyzer to measure the amplitude of these responses relative to the amplitude of a fundamental frequency.

The signal analyzer and the signal generator are both tuned to the harmonic frequency and a reference amplitude measurement is made. Then, the signal generator is tuned to the fundamental frequency with the power level unchanged. The signal analyzer measures the resulting harmonic response relative to the reference amplitude. For spurious signals close to the fundamental where phase noise dominates over thermal noise, an additional noise measurement is made to correctly determine the measurement uncertainty due to noise.

Required Test Equipment

Test Equipment

Recommended Model Number

Alternate Model Number

Signal analyzer

N9041B with options:

Frequency option for Input 2:

590, 90 GHz
or
5CX, 110 GHz

Other options:

  • N9085EM0E — 5G NR measurement application

 

N9040B
N9030B

With options:

  • 5xx frequency option. Select any frequency option that has a maximum frequency ≥ the maximum frequency of the DUT.
  • N9085EM0E — 5G NR measurement application

Connection Setups