FAQ: Why can I use the 34401A DMM to measure output RMS noise on the N8900 series power supplies, but not other power supplies?

The N8900 series power supplies are only specified up to 300 kHz, which can be measured by the 34401A. Other power supplies are specified up to 20 MHz, which cannot be measured by the 34401A.

Applies to: N8920A, N8921A, N8923A, N8924A, N8925A, N8926A, N8928A, N8929A, N8930A, N8931A, N8932A, N8934A, N8935A, N8937A, N8937APV, N8940A, N8941A, N8943A, N8944A, N8945A, N8946A, N8948A, N8949A, N8950A, N8951A, N8952A, N8954A, N8955A, N8957A, N8957APV

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