Receiver Compression

(E5080A only)

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.

Settings to Check

Prior to running this test, certain settings must be set on the ENA to avoid error messages and possible test failure.

Power Limit setting

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.

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.

Required Test Equipment

Test Equipment
(DSG)1

Recommended Model Number

Power meter
(PowerMeter 1)

N1914A

Power sensor 1
(PowerSensor RF 1)

E9304A Option H18

10 dB step attenuator
(10dBStepAttenuator 1)

8496G Option H52

Attenuator switch driver
(Attenuator Driver 1)

11713B

Cable, Type-N

  • 2 required

8120-8862

Adapter, Type-N (f) to Type-N (f)

1250-1472

  1. The DSG (Device Substitution Group) is listed below the equipment description, if applicable. These devices are required to be mapped in TME to execute a test. DSGs require either GPIB communication or are important for dynamic measurement uncertainty calculations. N/A refers to required equipment that is not mapped as DSGs in TME.

Connection Setups

  • Due to the complexity of the ENA family of analyzers, only a single representative model will be shown.
  • Some images may not apply to all models.

Port 1 Source Calibration

 

Port 1 Receiver Compression

 

Port 2 Source Calibration

Port 2 Receiver Compression

 

Port 3 Receiver Compression

 

Port 4 Receiver Compression