Source unlevelled messages may appear on the ENA screen during this test, and the test may time out and abort. This does not necessarily indicate a problem with the operation of the test. The work-around is to add a 3 dB pad.
This test measures the compression at the specified maximum power level for the receivers. The test process measures two power deltas, one at the top of the receiver input power range, and another at an expected linear part of the input power range. The difference between the deltas represents the compression at the top of the power range. A negative test result indicates compression while a positive result indicates expansion. There will be a note in the report stating:
A Fail result in this test implies that Dynamic Accuracy specification cannot be guaranteed in the Compression range of the receiver.
Prior to running this test, certain settings must be set on the ENA to avoid error messages and possible test failure.
Make sure that the ENA Power Limit setting is set to OFF. Although the default state for this setting is OFF, some customers may have changed this setting. To verify that the setting is in the OFF state, on the ENA go to Power > Power and Attenuators > Offsets and Limits. From the drop-down, select OFF for all ports. Verify that the state for all ports shows as OFF.
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Source unlevelled messages may appear on the ENA screen during this test, and the test may time out and abort. This does not necessarily indicate a problem with the operation of the test. The work-around is to add a 3 dB pad. |
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Test Equipment |
Recommended Model Number |
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Power meter |
N1914A |
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Power sensor 1 |
E9304A Option H18 |
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10 dB step attenuator |
8496G Option H52 |
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Attenuator switch driver |
11713B |
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Cable, Type-N
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8120-8862 |
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Adapter, Type-N (f) to Type-N (f) |
1250-1472 |
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