09 | Keysight | M9485A PXIe Multiport Vector Network Analyzer 1 MHz/50 MHz to 9 GHz - Data Sheet
Test port input
Description
Typical
Test port noise floor
Compression level
Trace noise
See M9376A
See M9376A
See M9376A
See M9376A
See M9376A
See M9376A
Stability
Dynamic accuracy
Test port damage level
Group delay1
Description
Typical
Supplemental information
Aperture (selectable)
Maximum aperture
Minimum delay
(frequency span)/(number of points - 1)
25% of frequency span
Limited to measuring no more than 180°
of phase change within the minimum
aperture.
Accuracy
See graph below (typical)
1. Group delay is computed by measuring the phase change within a specified step (determined by the frequency span and the number of points per sweep).
The following graph shows group delay accuracy with 3.5 mm connectors, full 2-port
calibration and a 10 Hz IF bandwidth.
– Calibration kit (85033E).
– Insertion loss is assumed to be < 2 dB
In general, the following formula can be used to determine the accuracy, in seconds, of a
specific group delay measurement: ± phase accuracy (degrees)/[360 x aperture (Hz)]
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