HP 8642A - Page 292

Performance Tests
Model 864 2A/B
PERFORMANCE TESTS
4-16. SSB PHASE NOISE TEST (OPTIONAL)
SPECIFICATION
DESCRIPTION:
4-42
Performance Limits
Electrical Characteristics
20 kHz Offset
200 kHz Offset
Conditions
Residual SSB Phase
-125 dBc
-134 dBc
band 10
Noise
in 1 Hz -134 dBc -143 dBc
9
Bandwidth
-137 dBc
-144 dBc
8
-141 dBc
-144 dBc
7
-144 dBc -145 dBc
6
-145 dBc -145 dBc
5
-146 dBc -147 dBc
4
-147 dBc
-148 dBc
3
-148 dBc
-149 dBc
2
-137 dBc -138 dBc
1
-125 dBc -137 dBc
HET
This test is an alternative to the test in paragraph 4-15. 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 SSE phase noise of both
8642s. Therefore, the LO must have SSE phase noise
that is less than or equal to the specification for the
HP 8642 under test.