Tektronix PSM3000 Series, User Manual

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Operating Basics
Con fi gure Instrument for Measurements
The following information will help you con fi gure the instrument to make
measurements.
Set the Center Frequency
You must set the center frequency when the incoming signal frequency changes.
Measurement accuracy requires that the frequency be set. Not doing so can be a
signi
fi cant source of errors. Each application provides a button or menu option for
setting the frequency of the incoming signal.
Change the Sensor
Address
Each application provides a button or menu option enabling you to change
an instrument address. This function is most useful when you have multiple
instruments connected to a computer. After you change the address to an
instrument, the software application will close. Disconnect and then reconnect
the instrument before reopening the application. The new address will appear
for that instrument.
Zero and Calibration
These power sensors are stable over a wide range of temperatures. You do not
need to zero or calibrate these instruments before using them, or if the temperature
changes. A factory calibration is required once a year to maintain traceability
to national standards.
CAUTION.
The PSM3000 series instruments require time to thermally stabilize.
Little, if any, warm up time is required for measurements above -40.0 dBm.
However, to make accurate measurements below -40.0 dBm, allow the PSM3000
series instrument to thermally stabilize for one hour.
Measurement Resolution The amplitude resolution is fi xed to a thousandth of a measurement unit.
Frequency is selectable in MHz or GHz ranges.
RF and Microwave Power Sensors/Meters 17