Table 64: Phase Noise Offsets (Low Range) - Tektronix RSA6100A Technical Reference

Performance Verification
62

Table 64: Phase noise offsets (Low range)

Span
400 Hz
4 kHz
40 kHz
300 kHz
12. Repeat these steps for each span setting:
a. Press Run.
b. Select the Reference Marker with the marker select key and press the
Peak key.
c. Select Marker 1 (M1) with the marker select key.
d. Set Marker 1 (M1) using the rotary knob to the offset frequency. (See
Table 64.) The offset frequency is indicated by the M1 Delta Marker
readout.
e. Read the noise level in dBc/Hz, in the Delta Marker readout (upper right
corner of the screen), and enter the value in the test record. (Limits are
shown in the test record.)
13. Record the generator signal amplitude:
a. Select Marker (MR) with the marker select key.
b. Select Peak to center the MR marker on the peak of the 1000 MHz signal.
c. Record the MR Marker amplitude (upper-left corner of the screen.) This
value is called MR and is used below.
14. Obtain the phase noise at 1 MHz offset. Start by setting the RSA6100A to the
settings listed below:
a. Center Frequency: 1000.99 MHz
b. Span: 10 kHz
c. Center the markers in the middle of the screen:
Select Markers to display the Markers toolbar. Select Define from the
toolbar.
Select Readouts > Absolute.
Select All Off.
Select Add.
Select Add a second time.
The two markers are now located at the center frequency position.
M1 Offset
CF + 100 Hz
CF + 1 kHz
CF + 10 kHz
CF + 100.125 kHz
RSA6100A Series Technical Reference