Keysight M937xA PXIe Service Guide 2-33
Tests, Adjustments, and Troubleshooting
Performance Tests
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
- Components for the PNAasPowerMeter
1
:
— PNA (N5241A/42A, or N5221A/22A, or E8363C/64C
2
)
— 10 dB attenuator
— 3.5 mm (-m- to -f-) test cable
- Components for calibrating the PNAasPowerMeter:
— U8485A USB Thermocouple Power Sensor (or N8485A power sensor
with N1912A/13A/14A power meter
1
)
— ECal module (N4691B)
Description of the Test
1. The PNA, with cable and 10 dB attenuator, is calibrated for use as a highly
accurate, tuned power meter. This set is referred to as PNAasPowerMeter.
2. The analyzer is Preset.
3. The analyzer is set up for a CW reflection measurement on the test port to
be measured.
4. The PNAasPowerMeter is connected to the test port.
5. The analyzer frequency is set to the desired value.
6. The PNAasPowerMeter is set to the same frequency.
7. The analyzer output power is set above its maximum output level. The
firmware will automatically set the hardware to its maximum output power.
8. The power level at this point is measured and compared to the maximum
output power specification.
9. This process is repeated at hundreds of frequencies across the full range of
the analyzer in every specified path configuration.
1. Refer to Power Measurement Receiver System (PNAasPowerMeter).
2. Refer to Get the Hardware Required for your GPIB Instruments.
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