Maximum Output Power

This test verifies that the maximum output power from the UUT meets specifications. During this test, the signal generator is set to its maximum settable output power and a measurement is performed using a power meter.

Required Test Equipment

Test Equipment

Recommended Models

Alternate Model(s)

Power Meter

N1914A9

E4419A/B (with firmware A2.09.01 or greater when using N-Series sensors)

Power Sensor (Low Frequency)

E9304A H1911

E9304A1,2
E9304A Opt H181
U8481A Opt 2001,10
U8485A Opt 2001,10

Power Sensor (Mid Frequency)
Not required for the E8663D

N8487A3
E9300A H255

8487A H843,4
8485A H844,6
N8485A6
N8485A CFT6
N8487A CFT3
N8488A3
U8485A Opt 20010,12
U8487A3,10
U8488A3,10

Power Sensor (High Frequency)
Only for E8257D Opt 567

V8486A H677,8

U8488A10
N8488A

Coaxial to V Band Adapter
Only for E8257D Opt 567

V281A8

 
  1. Not allowed for the following product configurations:
          E8257D with Option 1EU and H26;
          E8257D with Option 1EU and 532;
          E8257D with Option 1EU and 540;
          E8257N with Option 1EU;
          E8267D without Option H18, and with serial number 50420000 or greater or if retrofitted with Option 1EU;
          E8663D with Option 1EU.
    The dynamic frequency range of this sensor is insufficient for these models.
  2. Not allowed for the following product configurations:
          E8663D with Option 509;
    The dynamic frequency range of this sensor is insufficient for this model.
  3. Not allowed for the following product configurations:
          E8257D with Option 521;
          E8257D with Option 520 and 1EA;
          E8257D with Option 520 and 1EU;
    Although the dynamic power range of this sensor is insufficient for the configurations listed above, it is adequate for configurations not listed, such as E8257D with Option 532, etc.
  4. Option H84 provides reflection coefficient data
  5. Required for the following product configurations:
          E8257D with Option 521;
          E8257D with Option 520 and 1EA;
          E8257D with Option 520 and 1EU;
    The dynamic power range of this sensor is required for these models.
    Also allowed for the following product configurations:
          E8257D with Option 520;
          E8267D with Option 520
  6. Only allowed for the following product configurations:
          E8257D with Option 520 and without 1EA and 1EU;
          E8257D with Option H26;
          E8267D with Option 520
  7. Option H67 is an ANSI Z540-1 calibration for the V8486A Power Sensor with a V281A Connector Adapter (connected together).
  8. Not required if N8488A or U8488A is used.
  9. Power meter N1914A with serial numbers ranging between MY00000000—MY53040007 require Service Note 07 to be applied for measurement repeatability. Please have this service note applied or verify it was applied before using this power meter. The affected service note is: N1914A-07 Service Note.
  10. Requires power meter N1914A with USB ports. Refer to the main Required Test Equipment table.
  11. This sensor model is recommended for the Maximum Output Power tests because it can measure the true maximum output power performance up to +30 dBm. Other sensor models when permitted are adequate to verify conformance to specification, but can only measure true performance up to +20 dBm.
  12. Only allowed for the following product configurations:
          E8257D with Option 520 and without 1EA and 1EU
          E8257D with Option H26 or 532
          E8267D with Option 520 or 532

Connections and Setup Procedures

  • All test equipment requires a 30 minute warmup period to ensure accurate performance.

  • In the following test setup, cables are designated as solid lines and direct connections are designated as dashed lines.

  1. Connect all test equipment as shown.

  2. Connect GPIB cables to all GPIB-controlled test equipment.

  3. While performing this performance test, follow all instructions on the controller display.

Flexible power sensor channel assignment

This test uses flexible power sensor channel assignment and will identify the channel that a power sensor is connected to using the ability of "smart" sensors such as the N848xA, U848xA, and E930xA series to report their full model and serial number. Legacy 848x series power sensors are unable to provide their model or serial number, but their channel is identified during the sensor calibration process by identifying the channel of the sensor connected to the calibrator.

If the wrong legacy power sensor is connected to the calibrator during this process, the error can be resolved by disconnecting and reconnecting the power sensor to the power meter which will force a new calibration.

Select from the links below for connection setups depending on the power sensor selection. To expand all, click the Expand All button in the toolbar (webhelp only).

 

Power sensor calibration — standard sensor

Measurement setup — standard sensor channel A

Measurement setup — standard sensor channel B

 

 

Power sensor calibration — USB sensors

Measurement setup — USB sensor channel C

Measurement setup — USB sensor channel D

 

In Case of Difficulty

If this performance test fails, perform the following steps in order:

  1. Check the equipment setup (see above). If the setup is incorrect, make the necessary corrections and rerun the Performance Test.

  2. If this test fails with the equipment set up properly, refer to the troubleshooting section of the signal generator's service guide. If you do not have a printed copy of the service guide (Option OBW), one is available either on the CD-ROM that came with your signal generator shipment or on the Keysight Website.

  3. If you cannot correct the problem using the troubleshooting procedures in the Service Guide, obtain service from Keysight Technologies. Refer to Contacting Keysight Technologies.