FAQs from Rohde & Schwarz

SMCV100B - How to generate noise only

Description

I tried to generate noise with my SMCV100B. Unfortunately as it is Additional white gaussian noise, I can only add noise to the baseband signal.

Is there a way to generate pure noise also?

Resolution

AWGN (Additional White Gaussian Noise) is the key for generating pure noise, Even if the name doesn't suggest it at first.

The manual describes that as follows:

SMCV100B - How to generate noise only - screen 1

The following setup will generate pure noise output over a certain bandwidth ending at a 1 GHz signal with 100 MHz noise bandwidth in the desired (integrated) level range:

SMCV100B - How to generate noise only - screen 2

AWGN-Menu (Tap on AWGN in the Main Screen)

SMCV100B - How to generate noise only - screen 3