:COMMunicate
:SERial[n] [:RECeive]
:PACE :THReshold
:STOP
SYSTem:COMMunicate:SERial[n][:RECeive]:PACE:THReshold:STOP
< char_count> configures the input buffer level at which the specified interface
may send the XOFF character (ASCII 13
16
), de-assert the DTR line, and/or
de-assert the RTS line.
Parameters Parameter
Name
Parameter
Type
Range of
Values
Default
Units
char_count numeric 1 through 99 for built-in
1 through 8191 for E1324A
none
Comments • To determine the size of the input buffer of the serial interface you are
using, send SYST:COMM:SER[n]:PACE:THR:STOP? MAX. The
returned value will be the buffer size.
•…STOP must be set to greater than …STARt.
• The …THR:STOP command has no effect unless
…PACE:PROT XON, …CONT:DTR IBF, or …CONT:DTR IBF has
been sent.
• Related Commands: …PACE:PROT XON | NONE, …CONT:DTR,
…CONT:RTS
• *RST Condition: No change
Example Set interface to send XOFF when input buffer contains 80 characters.
SYST:COMM:SER0:PACE:THR:STOP 80
:COMMunicate
:SERial[n] [:RECeive]
:PACE :THReshold
:STOP?
SYSTem:COMMunicate:SERial[n][:RECeive]:PACE:THReshold:STOP?
[MIN | MAX] returns:
• The current stop threshold if no parameter is sent.
• The maximum allowable setting if MAX is sent.
• The minimum allowable setting if MIN is sent.
Comments • To determine the size of the input buffer of the serial interface you are
using, send SYST:COMM:SER[n]:PACE:THR:STOP? MAX. The
returned value will be the buffer size.
Example Return current stop threshold
SYST:COMM:SER0:PACE:THR:STOP?query for threshold
enter statement statement enters a numeric
value
SYSTem :COMMunicate :SERial[n] [:RECeive] :PACE :THReshold :STOP
System Instrument Command Reference 7-43
