Phase Noise; Figure 8: Error Message Showing Loss Of Lock To External Reference Signal; Figure 9: Equipment Connections For Phase Noise Checks - Tektronix RSA6100A Technical Reference

Performance Verification

Phase Noise

Check Phase Noise
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e. Check that the Status Bar shows Ref: Ext.
f. Set the Source to Internal (10 MHz).
g. Set the signal generator output level to +6 dBm.
h. Set the Source to External.
i. Check that the Status Bar shows Ref: Ext.
j. Disconnect the signal generator from the Ref In connector. An error
message should pop up to indicate loss of lock (see the following figure).

Figure 8: Error message showing loss of lock to External Reference signal

k. Click OK on the error message, and check that the Status Bar shows
Ref: Int.
l. Enter Pass or Fail in the test record.
1. Connect the generator output to the RTSA RF Input, using a 50 Ω N-N coaxial
cable (see the following figure).

Figure 9: Equipment connections for phase noise checks

2. Reset the RSA6100A to factory defaults;by pressing the Preset button, or
selecting Preset from the Setup menu.
RSA6100A Series Technical Reference