Справочник Пользователя для HP Cell Phone Accessories E6380-90019
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Chapter 3
Overview of the Test Set’s Built-In Tools
Using RF Tools Program
Swept Gain
This test measures the gain of a device by sweeping it over the specified
frequency range. In the menu for this test, you can enter the frequency
range over which the device is to be swept, the level into the device from
the DUPLEX OUT port, and the maximum expected gain.
frequency range. In the menu for this test, you can enter the frequency
range over which the device is to be swept, the level into the device from
the DUPLEX OUT port, and the maximum expected gain.
This test requires two 6-dB pads (attenuators). The pads are put on the
Test Set’s ANT IN and DUPLEX OUT ports to reduce impedance
mismatch error at these ports. A reference level is obtained by
connecting a short calibration cable between the pads on the DUPLEX
OUT and ANT IN ports. Next, the test device is added between the
calibration cable and one of the pads, and a measurement is made of the
additional gain from the reference level. The trace of the device gain
over the frequency range swept is displayed. The maximum gain is also
displayed on the screen.
Test Set’s ANT IN and DUPLEX OUT ports to reduce impedance
mismatch error at these ports. A reference level is obtained by
connecting a short calibration cable between the pads on the DUPLEX
OUT and ANT IN ports. Next, the test device is added between the
calibration cable and one of the pads, and a measurement is made of the
additional gain from the reference level. The trace of the device gain
over the frequency range swept is displayed. The maximum gain is also
displayed on the screen.
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