U2021XA Datasheet, PDF (9/20 Pages) Keysight Technologies – U2020 X-Series USB Peak and Average Power Sensors

09 | Keysight | U2020 X-Series USB Peak and Average Power Sensors – Data Sheet
Effect of Video Bandwidth Effect of Time-Gating on
Setting
Measurement Noise
The noise per sample is reduced by
applying the video bandwidth filter setting
(High, Medium, or Low). If averaging is
implemented, this will dominate any effect
of changing the video bandwidth.
The measurement noise for a gated average
measurement is calculated from the noise
per sample specification. The noise for any
particular gate is equal to N_sample/√(gate
length/12.5 ns). The improvement in noise
limits at the measurement noise
specification of 100 nW.
Maximum SWR
Frequency band
50 MHz to 10 GHz
> 10 GHz to 18 GHz
> 18 GHz to 26.5 GHz
> 26.5 GHz to 40 GHz
U2021XA
1.2
1.26
U2022XA
1.2
1.26
1.3
1.5
Calibration Uncertainty
Definition: Uncertainty resulting from
non-linearity in the U2021XA/22XA
detection and correction process. This
can be considered as a combination of
traditional linearity, calibration factor
and temperature specifications and the
uncertainty associated with the internal
calibration process.
Frequency band
50 MHz to 500 MHz
> 500 MHz to 1 GHz
> 1 GHz to 10 GHz
> 10 GHz to 18 GHz
> 18 GHz to 26.5 GHz
> 26.5 GHz to 40 GHz
U2021XA
4.2%
4.0%
4.0%
4.5%
U2022XA
4.3%
4.2%
4.5%
4.5%
5.3%
5.8%