9640A-Lpn Phase Noise Test (Optional) - Fluke 9640A Series Instruction Manual

Level
+13 dBm

9640A-LPN Phase Noise Test (Optional)

This test applies to the Model 9640A-LPN only. A separate phase noise test
is provided earlier in this chapter for the Model 9640A.
Equipment Required for this Test:
•
Signal Source Analyzer
• 50 Ω Leveling Head (supplied with UUT)
Use the following test 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. Set the signal source analyzer into its phase noise measurement mode by pressing the
SSA soft key, followed by the PRESET key.
3. On the signal source analyzer:
a. press the SETTINGS soft key followed by the GENERAL SETTINGS menu
key.
b. Set the offset frequency range for phase noise measurement by pressing the
DISPLAY SETTINGS soft key, and then, set the X-Axis start to 100 Hz and the
X-Axis stop to 10 MHz.
c. Press the SETTINGS soft key again, followed by the SPURS SETTINGS menu
key.
d. Cancel the spurs highlight display by pressing the HIGHLIGHT SPURS menu
key.
4. Set the UUT as follows:
Mode
Frequency
Level
Output
Table 5-5. Phase Noise Test (9640A only)
Output Frequency Offset frequency
1 GHz
Note
Note
Leveled Sine
1 GHz
+13 dBm
OPER
Tolerance
1 kHz < -97 dBc/Hz
10 kHz < -118 dBc/Hz
100 kHz < -118 dBc/Hz
1 MHz < -124 dBc/Hz
10 MHz < -142 dBc/Hz
Calibration 5
Performance Test
5-13