Specifications

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4. Set up 8663A reference source. Since the zero-beat
process must be manually instigated, the reference
source must be operated in a manual mode only:
a) Carrier frequency: 1.5 GHz.
b) Amplitude: Set source power level to attain
+15 dBm at the reference input port.
c) EFC input port (rear panel) connected to the
Voltage Tune port of 70420A.
5. Set up the phase noise measurement system.
a) From the Define menu, choose Measurement;
then define the measurement per the parame-
ter data provided in Table 3-3. When all of
the forms have been defined, choose the
Close button.
6. Start New Measurement.
a) Select New Measurement from the Measure
pulldown menu.
b) When the connect diagram is displayed, check
hardware and connections.
1) Connect scope to monitor port of 70420A
test set.
2) Set scope to monitor waveform.
3) Connect the signal paths to the phase noise
test set.
4) Verify that a beat note exists within the RF
pulse “ON” time.
5) Zero-beat sources to reduce beat note to
<5 percent of PTR (7 Hz). (This is often
accomplished in a non-pulsed condition
since it is very difficult to view the beat
note within the RF pulse, as observed on
the oscilloscope.)
c) Select Continue.