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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 with 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.)
The following table of setup considerations will help you
ensure that your measurement results are valid.
3. When the Connect Diagram appears on the
HP 3048A's display, connect the signal paths as shown.
After the connections have been made and checked,
press the Proceed softkey.
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Cable Connections
The best results will be obtained if semi-rigid coaxial cables are
used to connect the components used in the measurement;
however, BNC cables have been specified because they are more
widely available. Using BNC cables will degrade the close-in phase
noise results and, while adequate for this example, should not be
used for an actual measurement on an unknown device unless
absolutely necessary.
3-100
Signal Source Applications
rev.09AUG89
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