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Step 5 - Measure Downconverter phase noise at 9.6 GHz.
1. Enter source and interface parameters
2. Define graph of results
3. Enter spec lines
Table 14-16
Spec Lines: Downcoverter at 9.6 GHz (Test 6)
Point
1
2
3
4
5
6
7
8
9
10
11
12
The
Spec Lines
offsets from the result table for the offset frequency and the max spec from
the result table for the amplitude. Phase noise specs are entered in order, but
the spurious specs must be entered in reverse order with an extra point at 40
MHz.
4. Set the tuning sensitivity to 0.05 ppm/V
a. Press the
b. Press the
c. Press the
Test 6 - Phase Noise and Spurs of Downconverter
•
Carrier frequency: 9.6 GHz
•
VCO Tuning constant: 190 kHz/Volt
•
Voltage tuning range of VCO: 2.0 V
•
Title: Downconverter at 9.6 GHz.
Offset Frequency (Hz)
1
10
100
1E3
10E3
100E3
1E6
40E6
40E6
10E6
1E3
100
softkey is under the results graph definition menu. Use the
softkey.
Ref Chain
softkey.
Tune Sens
softkey.
0.05 ppm/V
HP 70427A/HP 70428A User's Guide 14-45
Performance Tests
Amplitude
(dBc/Hz)
–35
–65
–85
–113
–125
–136
–140
–140
–70
–70
–70
–40
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