Keysight N5224B, Руководство по обслуживанию

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3-32 Keysight N5224B/25B Service Guide
Tests and Adjustments
Performance Tests
3-
4. The analyzer frequency is set to the desired value.
5. The power meter correction table is set to the same frequency.
6. The output power is measured, and the value is compared to the Preset
setting.
7. This process is repeated at hundreds of frequencies across the analyzer’s
full range. The difference between the measured power and the output
setting must fall within the specified accuracy range at all points for the
test to pass.
If the Analyzer Fails this Test:
— Perform the “Source Adjustment” on page 3-46 and repeat this test.
— If the analyzer still fails this test, troubleshoot the source section of the
analyzer and then repeat this test. Refer to “Checking the Source Group” on
page 4-37 .
Source Maximum Power Output Test
Function of the Test: To confirm the maximum source output power of your
network analyzer over its full frequency range.
Specification Tested: Test Port Output–Maximum Leveled Power
Equipment Used:
— Power meter
— Power sensors
— Any necessary adapters
Description of the Test:
1. The analyzer is Preset.
2. The analyzer is set up for a CW reflection measurement on the test port to
be measured.
3. A power sensor is connected to the test port, using any necessary
adapters.
4. The analyzer frequency is set to the desired value.
5. The power meter correction table is set to the same frequency.
6. The analyzer’s output power is increased until a “Source Unleveled” error
is detected. The output power is then decreased in increments of 0.01 dB
until the error goes away. if the output power r18 dBm without
any error, the power is left at this level.
7. The power level at this point is measured and compared to the maximum
output power specification.