162
Chapter 5
Functional Testing
Displayed Average Noise Level (DANL)
6. Perform the following steps for each frequency setting listed in
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
7. Compare the measured DANL levels against the test limits listed in
.
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
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