78
Chapter 2
Test Descriptions
Instrument Noise Figure
6. Set the stop frequency dependant on the NFA’s upper frequency range.
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 4.4dB, connected to
Yes
by
default (press
1
,
0
,
MHz
, [
—>|
],
4, ., 4
,
Enter
or
X1
).
3. Dependant on the NFA being tested, repeat 2. for the remaining frequencies and
limits as detailed in Figure 2-21 thru Figure 2-23.
Summary of Contents for NFA Series
Page 114: ...104 Chapter3 Technical Specifications General Specifications...
Page 126: ...116 AppendixA Model N8973A Test Records Measurement Jitter Test Record...
Page 138: ...128 AppendixB Model N8974A Test Records Measurement Jitter Test Record...
Page 152: ...142 AppendixC Model N8975A Test Records Measurement Jitter Test Record...
Page 178: ...168 AppendixD Caring for Connectors Principles of Microwave Connector Care...
Page 184: ...174 Index Index...
