Ssb Phase Noise Test (Optional) - HP 8642A Operating Manual

Performance Tests Model 8642A/B
PERFORMANCE TESTS
4-16. SSB PHASE NOISE TEST (OPTIONAL)
SPECIFICATION
Electrical Characteristics
Residual SSB Phase
Noise in 1 Hz
Bandwidth
Performance Limits
20 kHz Offset
-125 dBc
-134 dBc
-137 dBc
-141 dBc
-144 dBc
-145 dBc
-146 dBc
-147 dBc
-148 dBc
-137 dBc
-125 dBc
200 kHz Offset
-134 dBc
-143 dBc
-144 dBc
-144 dBc
-145 dBc
-145 dBc
-147 dBc
- 1 4 8 dBc
-149 dBc
-138 dBc
-137 dBc
Conditions
band 10
9
8
7
6
5
4
3
2
1
HET
DESCRIPTION:
This test is an alternative to the test in paragraph 4 - 1 5. This test should be
performed only if it is necessary to check phase noise at frequencies other
than 10 MHz.
An LO and a double-balanced mixer are used to translate the noise
spectrum to a lower frequency so that it can be viewed on a high resolution
spectrum analyzer.
NOTE
This test measures the total SSB phase noise of both
8642s. Therefore, the LO must have SSB phase noise
that is less than or equal to the specification for the
HP 8642 under test.
4-42