HP 70427A User Manual page 522

d. Press the
This completes the setup. Measurements are made in steps 4 through 8.
Step 4 - Measure Phase Noise at 12.6 GHz (0.05 ppm/V)
1. Specify measurement type and frequency range
2. Enter source and interface parameters
3. Define graph of results
4. Enter spec lines
Table 14-4 Spec Lines: 12.6 GHZ Phase Noise (Test 2)
Point
1
2
3
4
5
6
7
8
9
10
11
12
Test 2 - Phase Noise and Spurs (mW LO)
softkey.
dBm
•
Start freq: 1 Hz
•
Carrier frequency: 12.6 GHz
•
Detector/discr input frequency: 12.6 GHz
•
VCO Tuning constant: 200 Hz/Volt
•
Voltage tuning range of VCO: 0.2 V
•
Title: Source at 12.6 GHz, .05 ppm/V tune sensitivity.
•
Minimum X coordinate: 1 Hz
Offset Frequency
(Hz)
1
10
100
1E3
10E3
100E3
1E6
40E6
40E6
10E6
1E3
100
HP 70427A/HP 70428A User's Guide 14-11
Performance Tests
Amplitude
(dBc/Hz)
+33
–63
–83
–111
–123
–135
–138
–138
–70
–70
–40
–40