Atec Agilent-E5071B User Manual
Page 13
13
Table 1-14
Test port input (group delay
1
)
Description Specification
Supplemental
information
Aperture (selectable)
(frequency span)/(number of points -1)
Maximum aperture
25% of frequency span
Maximum delay
Limited to measuring no more than
180° of phase change within the minimum aperture.
Accuracy
See graph below, typical
The following graph shows group delay accuracy with type-N full 2-port calibration and a 10 Hz IF bandwidth. Insertion loss is assumed to be < 2 dB.
Group delay (typical)
In general, the following formula can be used to determine the accuracy, in seconds, of specific group delay measurement:
± phase accuracy (deg)/[360 x aperture (Hz)]
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).