Low Band Filter Offset Refinement Calibration

(E8257D/E8267D With Option HSM and Option 1EH Only)

The Low Band Filter Offset Refinement Calibration reruns the Low Band Filter Offset Calibration to further refine the calibration arrays after the Low Band and High Band Scan Modulator Calibration is run.

Test Equipment

Preferred Model

Alternate Model(s)

50 Ohm terminator

Depending on the DUT RF Output Connector, choose:

85138B (2.4mm)
or 909D (3.5mm)
or 909A, Opt 012 (Type N)

20 dB attenuator

 

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 adjustment, follow all instructions on the controller display.

 

Setup for Low Band Filter Offset Refinement

Connect either a 50-ohm termination, or a combination of at least 20 dB of fixed attenuation to the DUT output connector

 

In Case of Difficulty

If this adjustment 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 adjustment.

  2. If this adjustment fails with the setup properly, perform the ALC Mod Driver Bias Calibration and rerun the Adjustment.

  3. If this adjustment still fails after step 1 and step 2, 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.

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