Atec Agilent-E5071C - Manual (Page 27)

27
Test port input (group delay) 1 (continued)
Table 27. Option 2D5/2K5/4D5/4K5
Description Specifi cation Supplemental information
Aperture (selectable) (frequency span)/(number
of points - 1)
Maximum aperture 25% of frequency span
Minimum 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 3.5 mm (male) connectors, full
2-port calibration and a 10 Hz IF bandwidth.
Calibration kit (85052D). Insertion loss is assumed to be < 2 dB.
In general, the following formula can be used to determine the accuracy, in seconds, of a
specifi c group delay measurement:
±phase accuracy (degrees) / [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).
C al pow er = -10 dB m ; M eas pow er = -10 dB m ; E lectrical Length = 10 m
Frequency = 1 G H z
A
ccu
racy (
n
S
ec)
Aperture (MHz)
0 .0 0 1
0 .0 1
0 .1
1
1 0
1 0 0
0 .0 1 0 .1 1 1 0 1 0 0