HP 83236B Manual de usuario Pagina 27

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27
Chapter 2, Making Measurements
Average Power
Steps 1 Connect the equipment as shown in figure 6.
2 In the main menu, enter the Base Station Channel number for the transmitter
being tested.
3 Set up the base station to transmit on the channel number entered in step 2.
4 From the main menu, choose Perform Average Power Measurements.
5 The resulting screen (see figure 7) will display average power (in Watts). The average
power displayed is corrected for the loss value entered in the Configuration
Information Menu under TX Measurement Path Loss.
6 You can change the measurement’s units to milliwatts or dBm using USER keys k3 and
k4, respectively.
7 USER key k1 will re-zero the power meter. It is not necessary to remove power from
the RF IN/OUT port of the PCS Interface to zero the power meter.
8 If you want to measure average power at another frequency, return to step 2.
9 Press the Main Menu (k5) key to return to the main menu.
Figure 7
Notes To minimize measurement errors due to temperature drift, occasional zeroing of
the power meter is recommended. An initial zeroing is performed when you enter
the
Average Power measurement screen. It is not necessary to remove the
signal from the RF IN/OUT port of the PCS Interface for zeroing.
Zero Pow
Watts
mW
dBm
Main Menu
1.28
In this example, loss
through a 20 dB attenuator
was added to an additional
1 dB of cable loss.
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