Fluke 96000 Series Service Manual page 55

To verify the UUT phase noise performance using a Signal Source Analyzer:
1. Connect the output of the 50 Ω Leveling Head to the RF INPUT of the Signal
Source Analyzer.
Do not connect the UUT and Signal Source Analyzer frequency
reference inputs and outputs. Each instrument must be operating
independently from its own internal frequency reference for this test.
2. Push the SSA softkey, followed by the PRESET key to set the Signal Source
Analyzer into its phase noise measurement mode.
3. On the Signal Source Analyzer:
a. Push the Settings softkey followed by the General Settings menu key.
b. Set the offset frequency range for phase noise measurement by pushing
the Display Settings softkey, and then, set the X-Axis start to 1 Hz and
the X-Axis stop to 10 MHz.
c. Push the Settings softkey again, followed by the Spurs Settings menu
key.
d. Push the HIGHLIGHT SPURS menu key to cancel the spurs highlight
display.
4. Set the UUT as follows:
For the 96270A, ensure the Leveling Head output is selected.
Mode
Frequency
Level
Output
5. On the Signal Source Analyzer, push the Premeas softkey to initiate a pre-
measurement. This lets the Analyzer automatically tune to the input and
select the appropriate measurement configuration.
6. When the pre-measurement is complete, push the Run softkey to make the
phase noise measurement.
The Signal Source Analyzer will default to using a cross-correlation
measurement, thus, providing the optimum phase noise
measurement.
7. Push MARKER on the Signal Source Analyzer to place the marker at the
lowest offset frequency of 1 Hz.
8. Observing the marker data on the display of the Signal Source Analyzer,
verify the phase noise at a 1 Hz offset is within the limit shown in Table 3-5.
As the Signal Source Analyzer models listed in Table 3-5 have only
"typical" and not guaranteed specifications at offset frequencies
below 1 kHz the test tolerances or starting offset frequency may
have to be adjusted accordingly.
Note
Note
Leveled Sine
1 GHz
+13 dBm
OPER
Note
Note
3
Performance Tests
Performance Test
3-13