HP 3048A Operating Manual page 154

Phase noise measurement system
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Note
The stop frequency for the stored measurement is 100 kHz
so the example will run on a standard HP 3048A system.
If you have an RF analyzer configured in your system, you
may want to change the stop frequency to 40 MHz in the
Type/Range parameter menu.
The amplitude of a source under system control, for an AM
noise measurement, will automatically be set to +10 dBm. If
any other amplitude is desired, the source should be placed
under manual control in the Source Control menu under the
the softkey. All other measurements set the
Define Msrmnt
source to +16 dBm automatically.
6. Press |Done| to return to the Main Software Level.
Beginning the Measurement
1. Press the New Msrmnt| key.
2. Press Yes, Proceed. The HP 3048A now addresses each
of the instruments listed in its System Configuration
table. If it does not receive a response at the address
listed for an instrument, it will inform you via a
displayed warning (the measurement cannot be
continued until the problem is corrected). (Refer to
Appendix A if you need information about adding or
changing an instrument in the HP 3048A's System
Configuration table.)
3. When the Connect Diagram appears on the
HP 3048A's display, connect the signal paths as
shown in Figure 3-28.
Table 3-21 contains setup considerations that will help
ensure that your measurement results are valid.
rev.l2JUL88
Signal Source Applications
3-107

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