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Chapter 2, Making Measurements
Average Power
Average Power
Overview Average power is a time-averaged broadband measurement of the transmitted
signal strength at the RF IN/OUT port on the front panel of the PCS Interface.
The average power measurement is “uncorrelated”; it does not require the
reference signals (Even-Second clock and 19.6608 MHz timebase) needed for
other tests.
Figure 6
CAUTION: Before performing any transmitter measurements, make sure that the power level applied
to the RF IN/OUT port of the PCS Interface does not exceed the published limit. For
CDMA base station signals this is 1 Watt (+30 dBm). You may have to use an external
attenuator or directional coupler, depending on the power output for your transmitter.
Signal levels greater than the specified maximum can cause damage to the test equipment.
NOTE: The test procedures outlined in this section require that you have already configured the
Test System as outlined in chapter 1, "Getting Started".
Requirements • You should know the following about your base station and setup:
❒ The base station channel number setting.
• You must have a means of controlling the base station to turn on the transmitter, set the
channel number, and so forth.
RF IN/OUT
Transmitter Port