Keysight N9914B-238 Spectrum analyzer time gating

Product Highlights

Gated sweep

• Span range: any span
• RBW range: 1 Hz to 300 kHz (derived from gate width)
• Gate delay range: -150 ms to 10 s
• Gate width (length) range: 6 µs to 1.8 s

Gate sources

• External
• RF burst
• Video

Gate method

• Gated FFT

Description

Option 238 adds time gating capability to the FieldFox spectrum analyzer. With time gating, you can measure the spectrum of a periodic signal during a specified time interval. Pulsed-RF signals are an example of a periodic signal that can be measured with time gating. You can measure the pulse during the on period, not the transition or the off period. Or you can exclude interfering signals such as a periodic transient. Time gating allows you to view spectral components that would otherwise be hidden. FieldFox's time gating method is a Gated FFT.