Anritsu MA24106A Guia do Utilizador Página 134

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10-6 Linearity Test Operational Testing for the MA24106A
10-6 PN: 10585-00020 Rev. C PowerXpert UG
10-6 Linearity Test
The linearity correction of the MA24106A is compared to a thermal power sensor, which has very good
inherent linearity over a power range of about –20 to +10 dBm. For this reason, the MA24106A will be
compared to the thermal sensor in two ranges, keeping the power levels to the thermal sensor in the range of
–17 dBm to +5 dBm, while the power to the MA24106A will vary from about –26 dBm to about +14 dBm.
Test Procedure
1. Set up the equipment as follows (refer to Figure 10-2 for an illustration):
a. Connect the reference power sensor to the reference power meter using the appropriate cables.
b. Connect the USB cable between the personal computer with the PowerXpert application installed
and the MA24106A power sensor under test.
c. Launch the PowerXpert application.
d. Turn the power on to all of the instruments and allow them to warm up for the amount of time
specified in the instrument’s respective manuals.
e. Reset or Preset all of the instruments.
f. Configure the reference meter and sensor to measure a CW signal.
g. Perform a sensor Zero and a 1 mW reference calibration on the reference sensor and meter per the
manufacturer’s instructions.
h. Perform a low-level Zero of the MA24106A by disconnecting the sensor from the synthesizer, click
the Zero button in the PowerXpert application, and wait for the Zeroing message to close.
i. Connect the power splitter to the output of the synthesizer and connect the 10 dB attenuator to
one of the splitter outputs.
j. Connect an N(f) to K adapter to each power sensor.
k. Connect the reference sensor and adapter to the 10 dB attenuator.
l. Connect the MA24106A and adapter to the other splitter output.
m. Set the synthesizer to 50 MHz and +20 dBm.
n. Increase averaging by entering “16” in the PowerXpert application, and then click Apply above
settings.
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