Performance Verification
d.
Set the
Source
to
External
.
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).
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.
m.
Repeat the test at 100 MHz, beginning with step 2.
Phase Noise (Instruments with Option 11)
If Option 11 is installed in your instrument, use the following procedure to check
the phase noise. If Option 11 is not installed in your instrument, use the procedure
that follows. (See page 80,
Phase Noise (Instruments without Option 11)
NOTE.
The intent of the Phase Noise test is to measure the phase noise level of the
instrument. The phase noise speci
fi
cation does not cover residual spurs. If the
speci
fi
c measurement frequency results in measuring a residual spur that is visible
above the noise level, the phase noise speci
fi
cation applies not to the spur but to
the noise level on either side of the spur. Please refer to the Spurious Response
speci
fi
cations. (See Table 20.) Also, refer to the Spurious Response section of this
procedure to determine whether or not a residual spur is within the speci
fi
cation.
(See page 124, Spurious Response.)
78
RSA5100B Series Technical Reference
