34 | Keysight | FieldFox Handheld Analyzers 4/6.5/9/14/18/26.5/32/44/50 GHz - Data Sheet
Spectrum Analyzer Time Gating
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. For example, 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.
Description
Gate method
Gated FFT
Span range
Any span
RBW range
1 Hz to 300 kHz (derived from gate width)
-150 ms to 10 s
Gate delay range
Gate width (length) range
Gate sources
6 μs to 1.8 s
External, RF burst, Video
Reflection Measurements (RL, VSWR)
The performance listed in this section applies to the reflection measurements capabilities available in the following models:
– FieldFox microwave spectrum analyzers: N9935A, N9936A, N9937A, N9938A1
N9960A, N9961A, N9962A
See FieldFox Configuration Guide for option information. Many capabilities listed in this Data Sheet require options.
Models
N9935A
N9936A
N9937A
N9938A1
N9960A
N9961A
N9962A
Reflection Measurements
30 kHz to 9 GHz
N993xA
30 kHz to 14 GHz
30 kHz to 18 GHz
30 kHz to 26.5 GHz
300 kHz to 32 GHz
300 kHz to 44 GHz
300 kHz to 50 GHz
N996xA
Measurements
Return loss, VSWR normalization using data/memory
1. Reflection measurements in N9938A specifically requires 3.5 mm (m) test ports instead of the standard Type-N (f).
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