HP 8568B 15.Spurious Responses Test

15. Spurious Responses Test

15.Spurious Responses Test

Related Adjustment Second Converter Adjustments

Specification For total signal power of c-40 dBm at the input mixer of the analyzer, all image and out-of-band mixing responses, harmonic and intermodulation distortion products are >75 dB below the total signal power for input signals 10 Mhz to 1500 MHz; >70 dB below the total signal power for input signals 100 Hz to 10 MHz.

Second Harmonic Distortion

For a signal -30 dBm at the mixer and 210 MHz, second harmonic distortion is >70 dB down; 60 dB down for signals ~10 MHz.

Third Order Intermodulation Distortion

For two signals each -30 dB at the mixer, third-order intermodulation products are:

Description Harmonic distortion (second and third) is tested using a signal source and a low-pass filter. The LPF insures that the harmonics measured are generated by the spectrum analyzer and not by the signal source.

Spurious responses due to image frequencies, out-of-band mixing, and intermodulation distortion are measured by applying signals from two separate sources to the spectrum analyzer input.

P e r f o r m a n c e T e s t s 2-49