Tektronix PSM3000 Series, User Manual

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Getting Started
Warm Up Procedure 1. For 24 hours prior to and during execution of this test procedure, the
instrument must be stored in a stable laboratory environment. In addition, the
instrument should be powered for at least 20 minutes before starting the test.
Stable environmental conditions are de
fi ned as:
Temperature: 20 °C to 30 °C (68 °F to 86 °F)
Humidity: 15% to 95% noncondensing
Altitude: Sea Level to 3,000 meters (9,850 feet)
2. All equipment requiring power should be connected to mains and warmed up
according to the recommendations of the manufacturer .
Functional Check
Procedure
1. Connect the instrument to the computer with a USB cable if you have not
already done so.
2. Turn on and preset a signal source.
3. Turn the source RF output off.
4. Connect the source to the instrument input connector. (Use adapters as
required. Use of cables may skew results so direct connection to the source is
recommended.)
5. Start the Power Meter Application.
6. After the application starts, click the Default Setup button.
7. Vary the input power to prove the instrument is functioning properly. Use
the procedure below.
a. Set the SOURCE frequency to 1 GHz.
b. Set the SOURCE power to 0 dBm.
c. Turn the SOURCE RF output on.
d. Read the instrument power.
e. Set the SOURCE power to -20 dBm.
f. With a high quality SOURCE and adapters, the SOURCE and instrument
power readings should agree within ±1 dB. You may see larger
disagreement with some sources.
g. The functional check is successful if the instrument is within ±1 dB of
the SOURCE power.
RF and Microwave Power Sensors/Meters 11