Agilent Technologies E4406A, User Manual

Page: 162 / 230

162 Chapter 5
Functional Testing
Displayed Average Noise Level (DANL)
6. Perform the following steps for each frequency setting listed in Table
5-14 :
a. Press
Frequency
,
Center
, “n”, and
MHz
. Where “n” is the next
frequency value in the Center Frequency column.
b. Wait for the instrument to finish averaging.
c. Ensure that the marker is not on a residual responses peak, read
the marker value (if necessary, adjust to a point representative of
the average noise value), and enter this value into
Table 5-14 .
7. Compare the measured DANL levels against the test limits listed in
Table 5-14 .
Table 5-14 DANL Data Sheet
Center Frequency
(MHz)
Measured DANL
(dBm)
Test Limits
(dBm)
19.995 ≤ −
90
1999.995 ≤ −
106
2999.995 ≤ −
103
3999.995 ≤ −
98