Diagnostic:serial[1|2|3|4]:Transmit:channel Enable | Disable; Diagnostic:serial[1|2|3|4]:Transmit:channel - HP E2261A User Manual

DIAGnostic:SERial[1|2|3|4]:TRANsmit:CHANnel ENABle | DISAble

DIAGnostic:SERial[1|2|3|4]:TRANsmit:CHANnel?

28 SCPI Command Reference
Enables or disables the UART transmitter for the specified port. Note that all
transmitters are enabled at power-on or reset. A disabled transmitter is automatically
enabled when an attempt is made to transmit data.
Returns the current status of the specified port's UART transmitter. The command
returns the string "ENAB" for enabled, or the string "DISA" for disabled.