Configuring the Forward Orthogonal Channel Noise Simulator (F-OCNS/OCNS)

Last updated: February 15, 2011

The F-OCNS/OCNS channel parameters are configured using the following call processing subsystem functions and commands:

CALL:OCNSource

To set the parameters using the test set's front panel, see How Do I Change Generator Information? .

Settable F-OCNS/OCNS Parameters

Walsh code.
QOF Mask ID. See CALL[:CELL[1]]:OCNSource:QOFunction:MIDentifier and QOF, QOF Mask ID and QOF Set .

Fixed F-OCNS/OCNS Parameters

F-OCNS level (calculated value based on summation of all other code channels).
OCNS_CCI_SUPPORTED is fixed at 0.
NUM_OCNS is fixed at 1.

GPIB Examples:

Setting F-OCNS Walsh code

 
OUTPUT 714;"CALL:OCNSOURCE:WALSH CODE5"

would set the F-OCNS Walsh code to 10. See CALL[:CELL[1]]:OCNSource:WALSh[:SELected] .

Querying F-OCNS level

 
OUTPUT 714;"CALL:OCNSOURCE:LEVEL?"

would query the last F-OCNS calculation. See CALL[:CELL[1]]:OCNSource:LEVel[:SELected]? .

Operating Considerations

The F-OCNS/OCNS level is a calculated value and can only be queried.

The F-OCNS value is calculated to provide a summing value that results in a total code channel value equalling 100% of cell power. If the current desired code channel levels do not allow for a valid OCNS calculation an error message will be displayed.