:CALibrate Module Commands
For Receiver modules (N1060A, N1076A/B, N1077A, or N1078A) the modules clock recovery can be calibrated to enhance measurement precision. Always remove or disable all inputs to the module before performing a calibration. The calibration that does not require any external equipment setup. Always remove or disable all inputs to the module.
A module calibration is recommended when:
- DCA-X (or DCA-M) power has been cycled
- Module has been removed and then reinserted since the last calibration
- DCA-X temperature change exceeds 5°C compared to the temperature of the last module calibration (ΔT > 5°C)
- Time since the last calibration has exceeded 10 hours
FlexPLL does not perform a module's vertical calibration. Although the DUTs output is connected to the inputs channels of an N1060A module, the signal is routed just inside the module's front panel to the clock recovery circuits. Therefore the channel path is not used and does not need to be calibrated for FlexPLL. Only the module's clock recovery path needs calibration.
To avoid corrupting module memory, do not remove or insert any module from the DCA-X during a calibration. If a message indicates that a module has corrupt contents, refer to Module Memory Recovery in FlexDCA's help.
Re-seating the module into the DCA-X may affect the electrical connections, which in turn affects the data sampling process.
Always perform a module calibration before performing a Response calibration.