LF Output

The LF Output provides a calibrated audio frequency signal. This adjustment calibrates the LF Output path on the Reference Board for an accurate output voltage.

During this adjustment, the source LF Output is connected to a DVM. One of the two internal modulators on the Reference Board is set for a 1 kHz, 1V-peak sinewave. The internal path is switched so that the modulator output is routed to the LF Output. A DVM reading is taken, the DAC is set to the new value, the LF Output voltage is measured to verify the adjustment, and calibration data is stored.

Required Test Equipment

Test Equipment

Recommended Model

Alternate Model

Digital Multimeter

3458A Opt 002

34470A

Connections and Setup Procedures
  • All test equipment requires a 30 minute warmup period to ensure accurate performance.
  • In the following adjustment 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.

 

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 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.