Invoking Zauto

  1. Run the Setup utility.
    1. Verify the setup information to make sure Zauto calibrations are accurate.

      For an automatic siggen, use the Antenna utility to verify that the siggen is setting the correct values.

    2. For magnetron systems, check/adjust the STALO and signal generator frequencies:
      • Set switch 2 to the A position to run the normal receiver signal into the burst channel.
      • Use RVP TTY ps command to plot burst frequency spectrum. Turn off AFC while you are there.
      • Set siggen frequency to an appropriate level.
      • Adjust siggen frequency until it reads out the correct IF frequency (often 30 MHz) to within 100 KHz. Alternately use MFC to adjust the STALO frequency. It is worth checking that you are not off by a multiple of 18 MHz, or on the wrong side lobe of the transmitter.
    3. Exit Setup.
  2. In the command line, type: zauto&

    If needed, use one of the following options:

    Option Description
    -burst_pwr
    -BW_is_invPW Optional parameters for the –cal option.
    -cal Performs an automatic calibration without displaying the zauto menu. The results are saved to the calibration file, unless there is a value outside the tolerance range. This option is available only with an automatic siggen.
    -debug Use this to debug Zauto.

    -demo

    -demo2

    		 Runs the utility without the signal processor, for testing and demonstration purposes.
    -pol H or V Forces polarization to horizontal or vertical in Zauto startup.
    -pw_idx 1 - 4 Select the pulse width index used for defining the pulse width for automatic calibration.
    -display display_name
  3. For magnetron systems, when you are done with Zauto, recheck the frequency for drift.