V-Band Power Flatness Calibration

(E8257D with Option 567 Only)

This calibration adjusts the output power to be flat across frequencies greater than 50 GHz. Also, the accuracy of the output power is adjusted when the step attenuator is set at -5, -15, and -25 dB.

Test Equipment	Preferred Model	Alternate Model(s)
Power Meter	N1914A1	E4419B E4419A
Power Sensor	V8486A H67 (67 GHz)2

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
Option H67 is an ANSI Z540-1 calibration for the V8486A Power Sensor with a V281A Connector Adapter (connected together).

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.

Connect all test equipment as shown.
Connect GPIB cables to all GPIB-controlled test equipment.
While performing this adjustment, follow all instructions on the controller display.

Setup for Power Meter Calibration

Setup for V-Band Power Flatness Calibration

In Case of Difficulty

If this adjustment fails, perform the following steps in order:

Check the equipment setup (see above). If the setup is incorrect, make the necessary corrections and rerun the adjustment.
If this adjustment 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.
If you cannot correct the problem using the troubleshooting procedures in the Service Guide, obtain service from Keysight Technologies. Refer to Contacting Keysight Technologies.