Atec Agilent-E8802A User Manual
Page 19
15
Table 15. Test Port Input (Group Delay)
a
Description
Specification
Supplemental Information
Aperture (selectable)
(frequency span)/(number of
points -1)
Maximum Aperture
20% of frequency span
Range
0.5 x (1/minimum aperture)
Maximum Delay
Limited to measuring no more
than 180° of phase change within
the minimum aperture.)
Accuracy
See graph below. Char.
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 and electrical length to be ten meters.
In general, the following formula can be used to determine the accuracy, in seconds, of specific group
delay measurement:
±Phase Accuracy (deg)/[360 × Aperture (Hz)]
Depending on the aperture and device length, the phase accuracy used is either incremental phase
accuracy or worst case phase accuracy.
a
Group delay is computed by measuring the phase change within a specified frequency step (determined by the frequency span and the
number of points per sweep).
General Information
Table 16. System Bandwidths
Description
Specification
Supplemental Information
IF Bandwidth Settings
Range
1 Hz to 40 kHz
in a 1, 2, 3, 5, 7,10 sequence up to 30 kHz, 35 kHz, 40kHz,
nominal