Agilent Technologies 8960 10 Series Reference Manual page 563

Measurement Related Configuration
Measurement Related Configuration
Amplitude Offset (RF In/Out port)
Amplitude offset is provided in order to offset RF levels at the RF IN/OUT port of the test set and represent
the power level at the device under test. The offset is the same for both transmit and receive power so the
network being compensated for must have the same gain or loss in both directions. The amplitude offset value
is found in the SYSTEM CONFIG screen, Port Configuration key, F5.
Examples
The SYSTEM:CORRECTION:STATE command turns amplitude offset on or off. When
SYSTEM:CORRECTION:STATE is on; the annunciator "Offset" will be shown on the display. see
"SYSTem:CORRection" on page 485
OUTPUT 714;"SYSTEM:CORRECTION:STATE ON" !Set amplitude offset state ON.
OUTPUT 714;"SYSTEM:CORRECTION:GAIN -3DB" !Set amplitude offset to 3 dB loss in network.
OUTPUT 714;"SYSTEM:CORRECTION:GAIN 6DB" !Set amplitude offset to 6 dB gain in network.
OUTPUT 714;"SYSTEM:CORRECTION:SGAIN -2DB" !Set amplitude offset to ON and a 2 dB loss
!in the network.
Measurements reflect the actual power at the connection to the device under test, known as the DUT plane.
The test set; cell power indicates a change to compensate for loss or gain in the network; however, the expected
power setting remains unchanged. See "CALL:POWer" on page 273 for cell power or
"RFANalyzer:EXPected:POWer[:SELected]" on page 372 for expected power details.
Transmitter example
Cell power reflects the actual power at the device under test, including any gain or loss entered as an
amplitude offset.
If the cell power setting is −85 dBm, and the SYSTEM:CORRECTION:SGAIN -3DB command is sent, the cell
power setting indicates −88 dBm, which represents the cell power at the mobile station after a 3 dB loss in the
network.
When you set Cell Power level, the test set uses the amplitude offset value to adjust the actual power so that,
power at the devise under test will match the Cell Power setting.
The following figure shows a transmitter example. Transmit power is the combination of the cell power and
the amplitude offset values.
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