HP 8340B Manual page 50

4-9. SINGLE SIDEBAND PHASE NOISE (Cont'dJ
PHASE NOISE CALCULATION
38. Using the data obtained in Table 4-19 and Table 4-20, calculate and enter the Actual Phase Noise
into Table 4-21.
For example: Assume the following data was obtained for the 30 Hz offset at 26.032 GHz
CD 0 dB (obtained in step 13)
=
MNL —50.8 dB (obtained in step 27)
=
IFCD is defined to be 0 for a 30 Hz offset (also for 100 Hz and 1 kHz)
Therefore
Actual Phase Noise
The value —53.8 would be entered into Table 4-22.
For example: Assume the following data was obtained for the 10 kHz offset at 2.202 GHz
CD —25.6 dB (obtained in step 19)
=
IFCD —44.2 dB (obtained in step 22)
=
MNL —66.0 dB (obtained in step 34)
=
Therefore
Actual Phase Noise
The value —87.6 would be entered into Table 4-22.
Offset (Hz)
3Q3
100
1K
10K
lOOK
1. Actual MNL
IFCO
= ~-
where IFOD 0 for 30 Hz, 100 Hz, and 1 kHz offsets
2. Applies
only to HP 8340B.
3. Not applicable to instruments equipped with Option
HP 8340B/41B
MNL -4- IFCD
=
—50.8 ±0
= —
—53.8
=
±IFCD
MNL
=
—66.0 + (—44.2)
=
—87.6
=
Table 4-22. Phase Noise Test Results
Actual 1 Single Sideband Phase Noise (dBcIl Hz)
2.202 GHz 6.902 0Hz
CO 3dB
—
007, Relaxed Phase Noise Specifications.
CD
3 dB
— —
3
0
—
CD 3 DB
— —
(—25.6) —3
—
13.402 GHz
value measured in step 22 (see Table 4-19) for 10K and 100 kHz offsets
19.502 0Hz 26.032 0Hz2
Performance Tests 4-51/4-52