![background image](http://html.mh-extra.com/html/hp/70427a/70427a_user-manual_157664575.webp)
14-64
HP 70427A/HP 70428A User’s Guide
Performance Tests
Test 8 - Phase Noise and Spurs (RF)
c.
Enter 9.6 with the numeric keypad.
d. Press the
GHz
softkey.
7. Run the phase-noise measurement
When the phase-noise measurement program stops to prompt a zero-beat
adjustment, do the following:
a.
Turn the HP 70428A Option K01 on.
b.
Adjust the pot on the HP 70428A Option K01 for a zero beat within
2 Hz. If necessary, switch the NORMAL/REVERSE switch and turn
the pot in the other direction.
c.
Press
Proceed
softkey to continue measurement.
8. Print a graph and parameter summary
On the HP 3048A controller press the
SHIFT
key and the
Hard Copy
softkey.
Step 7 - Measure phase-noise at 25.8 GHz
1. Specify measurement type and frequency range
•
Start freq: 10 Hz
2. Enter source and interface parameters
•
Carrier frequency: 25.8 GHz
•
Detector/discr input frequency: 25.8 GHz
•
VCO Tuning constant: 400 Hz/V
3. Define graph of results
•
Title: HP 70428A/002, 25.8 GHz with 0.05 ppm/V tuning.
4. Enter spec lines
Table 14-22
Spec Lines: 25.8 GHz (Test 8)
Point
Offset Frequency
(Hz)
Amplitude
(dBc/Hz)
1
1
– 27
2
10
– 57
3
100
– 77
4
1E3
– 105
5
3E3
– 108
6
5E3
– 110
7
10E3
– 117
Summary of Contents for 70427A
Page 11: ...x HP 70427A HP 70428A User s Guide Declaration of Conformity ...
Page 13: ... xii HP 70427A HP 70428A User s Guide Typeface Conventions ...
Page 243: ...9 42 HP 70427A HP 70428A User s Guide Technical Data HP 70428A Option 002 Specifications ...
Page 299: ...10 56 HP 70427A HP 70428A User s Guide Softkeys and Displays IF Figure 10 42 μW Mode HP70472A ...
Page 385: ...10 142 HP 70427A HP 70428A User s Guide Softkeys and Displays YTF Cal ...
Page 435: ...12 14 HP 70427A HP 70428A User s Guide Remote Programming Commands ...
Page 607: ...15 10 HP 70427A HP 70428A User s Guide Adjustments 10 MHz Oscillator Adjustment ...
Page 611: ...16 4 HP 70427A HP 70428A User s Guide Customer Support ...