Chapter 2
79
Test Descriptions
Instrument Noise Figure
6. Set the stop frequency dependant on the NFA’s upper frequency
range.
For the N8972A set the stop frequency to 1.5 GHz (press
Stop
,
1
,
.
,
5
,
GHz
)
For the N8973A set the stop frequency to 3.0 GHz (press
Stop
,
3
,
.
,
0
,
GHz
).
For the N8974A set the stop frequency to 6.7 GHz (press
Stop
,
6
,
.
,
7
,
GHz
).
For the N8975A set the stop frequency to 26.5 GHz (press
Stop
,
2
,
6,.
,
5
,
GHz
).
7. Set the number of measured points to 401 (press the
Frequency/Points
key, then
More
,
Points
,
4
,
0
,
1
,
Enter
).
Step 6. Models N8974A and N8975A only: run the Yig Tuned Filter alignment
by pressing
System, Alignment
and
Align YTF
then wait for the alignment
routine to complete.
Step 7. Restart the NFA sweep by pressing the
Restart
key.
Step 8. Once the single sweep is complete set the NFA to autorange (press the
Scale
key and the
Autoscale
menu item.
Step 9. Set the specification limit lines as follows:
1. Press the
Limit Lines
key, then
Limit Line 1
⇑
,
Type Upper
and
Editor
.
2. Set the first frequency to 10 MHz and the limit to 4.425dB, connected
to
Yes
by default (press
1
,
0
,
MHz
, [
—>|
],
4, ., 4, 2, 5
,
Enter
or
X1
).
3. Dependant on the NFA being tested, repeat 2. for the remaining
frequencies and limits as detailed in Figure 2-22 thru Figure 2-25.
Summary of Contents for N8972A
Page 9: ...ix Declaration of Conformity N8972A ...
Page 10: ...x Declaration of Conformity N8973A ...
Page 11: ...xi Declaration of Conformity N8974A ...
Page 12: ...xii Declaration of Conformity N8975A ...
Page 19: ...Contents xix ...
Page 20: ...xx Contents ...
Page 108: ...88 Chapter2 Test Descriptions Measurement Jitter ...
Page 124: ...104 Chapter3 Technical Specifications General Specifications ...
Page 136: ...116 AppendixA Model N8972A Test Records Measurement Jitter Test Record ...
Page 148: ...128 AppendixB Model N8973A Test Records Measurement Jitter Test Record ...
Page 160: ...140 AppendixC Model N8974A Test Records Measurement Jitter Test Record ...
Page 174: ...154 AppendixD Model N8975A Test Records Measurement Jitter Test Record ...