Internal Self-Calibration

The WTS instrument can perform internal self-calibration to maintain the specified accuracy over time and temperature drift of the RF components.

Because the virtual instruments share hardware, the execution of self-calibration called on one virtual instrument from one client can impact all other virtual instruments used by other clients. You must consider how a self-calibration call will affect other virtual instruments. Self-calibration takes time and in a running production environment, there may be a time advantage to performing self-calibration only when necessary.

Execution of self-calibration can be forced or conditional.
  • Forced self-calibration—Self-calibration executes when the client sends *CAL to the WTS instrument. *CAL triggers execution of the internal self-calibration on all RF chains in the instrument.
  • Conditional self-calibration—Self-calibration executes only when necessary, based on time and temperature drift. Conditional self-calibration initiates when the instrument receives the following command: 
    CALibration:RF:INITiate
    Specify the time and temperature values for which to initiate self-calibration using the following commands: 
    CALibration:RF:AUTOmatic:TEMPerature
CALibration:RF:AUTOmatic:TIME