58
Chapter 2
Test Descriptions
Noise Figure Range and Accuracy
Step 3. Set the Switch Driver as follows:
1. Ensure the
LOCAL
LED is on.
2. Set the attenuator to 0dB. The settings are as follows:
Step 4. Set the NFA as follows:
1. Ensure that the preset is set to factory settings (press the
System
key,
then
More
,
Power On (Preset)
,
Power On Preset
and
Preset (Factory)
).
2. Press the
Preset
key and wait for the routine to finish.
3. Set the measured result to Phot (press the
Result
key and
Phot
).
4. Set sweep to single (press the
Sweep
key and
Sweep Mode (Single)
).
5. Set the frequency mode to fixed (press the
Frequency/Points
key and
Freq Mode
,
Fixed
).
Table 2-13
Switch Driver Attenuator Settings (1 = LED On, 0 = LED Off)
1dB Step Attenuator
Attenuator X
1
2
3
4
0
0
0
0
0
1
1
0
0
0
2
0
1
0
0
3
1
1
0
0
4
0
0
1
0
5
1
0
1
0
6
0
1
1
0
7
1
1
1
0
8
0
0
1
1
9
1
0
1
1
10
0
1
1
1
11
1
1
1
1
Содержание N8972A
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Страница 19: ...Contents xix ...
Страница 20: ...xx Contents ...
Страница 31: ...11 2 Test Descriptions This chapter descibes each test required for calibration and performance verification ...
Страница 108: ...88 Chapter2 Test Descriptions Measurement Jitter ...
Страница 124: ...104 Chapter3 Technical Specifications General Specifications ...
Страница 136: ...116 AppendixA Model N8972A Test Records Measurement Jitter Test Record ...
Страница 148: ...128 AppendixB Model N8973A Test Records Measurement Jitter Test Record ...
Страница 160: ...140 AppendixC Model N8974A Test Records Measurement Jitter Test Record ...
Страница 174: ...154 AppendixD Model N8975A Test Records Measurement Jitter Test Record ...