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:COMMunicate
:SERial[n] :CONTrol
:DTR?
SYSTem:COMMunicate:SERial[ n]:CONTrol:DTR? returns the current setting
for DTR line control.
Example Checking the setting of DTR control.
SYST:COMM:SER0:CONT:DTR?
enter statement statement enters the string
"ON ", "OFF", "S TA N ", or "IB F"
:COMMunicate
:SERial[n] :CONTrol
:RTS
SYSTem:COMMunicate:SERial[ n]:CONTrol:RTS < Rts_cntrl> controls the
behavior of the Request To Send output line. RTS can be set to a static state
(ON | OFF), can operate as a modem control line (STANDard), or can be used
as a hardware handshake line (IBFull).
Parameters Parameter
Name
Parameter
Type
Range of
Values
Default
Units
rts_cntrl discrete ON| OFF| STANdard| IBFull none
Comments • The following table defines each value of rts_cntrl:
Value Definition
ON RTS line is asserted
OFF RTS Line is unasserted
STANdard RTS will be asserted when the serial interface is
ready to send output data. Data will be sent if the
connected device asserts CTS and DSR.
IBFull While the input buffer is not yet at the :STOP
threshold, RTS is asserted. When the input buffer
reaches the :STOP threshold, RTS will be
unasserted.
• DIAG:BOOT:COLD will set …RTS to ON.
• Related Commands: SYST:COMM:SER[n]:CONT:DTR,
SYST:COMM:SER[n]:PACE:THR:STARt,
SYST:COMM:SER[n]:PACE:THR:STOP
• *RST Condition: No change
Example Unasserting the RTS line.
SYST:COMM:SER0:CONT:RTS OFF
SYSTem:COMMunicate :SERial[n] :CONTrol :DTR?
7-38 System Instrument Command Reference