Agilent Technologies 8960 Series 10, Справочное руководство

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S:\Hp8960\E1960A GSM Mobile Test Application\A.04 Release\Reference_Manual\Chapters\conf_meas.fm
Measurement Related Configuration
Figure 3. Amplitude Offset Transmitter Example
Receiver example
The expected power setting reflects the actual power at the device under test. This means the value displayed
for expected power does not change; however, the test set’s hardware changes internally to expect a level that
includes the offset.
If the expected power setting is 12 dBm, and then the SYSTEM:CORRECTION:SGAIN -3DB command is
sent, the expected power remains unchanged at 12 dBm to reflect the level at the device under test, but the
test set’s internal hardware changes to receive 9 dBm the actual power received at the test set’s RF IN/OUT
connector.
The following figure shows a receiver example. Input power is the combination of the expected power and
amplitude offset values.
Figure 4. Amplitude Offset Receiver Example
Agilent 8960
Transmit Power setting = –85 dBm
Amplitude offset = –3 dB
–3 dB network
(bidirectional)
DUT
Instrument Plane
Actual Power = –82 dBm DUT Plane
Actual Power = –85 dBm
When amplitude offset is non-zero, the transmit power setting reflects
the actual power at the DUT plane.
Agilent 8960
Input Power setting = 12 dBm
Amplitude offset = –3 dB
–3 dB network
(bidirectional)
DUT
Instrument Plane
Power = 9 dBm DUT Plane
Actual Power = 12 dBm
When amplitude offset is non-zero, the input power setting reflects
the actual power at the DUT plane.
Signal Flow