User manual

Chapter 2 Command System RIGOL
DS4000E Programming Guide 2-233
:TRIGger:USB:SPEed
Syntax
:TRIGger:USB:SPEed <value>
:TRIGger:USB:SPEed?
Description
Sets or queries the signal rate of USB trigger.
Parameter
Name
Type
Range
Default
<value>
Discrete
{LOW|FULL}
LOW
Return Format
The query returns LOW or FULL.
:TRIGger:USB:WHEN
Syntax
:TRIGger:USB:WHEN <cond>
:TRIGger:USB:WHEN?
Description
Sets or queries the trigger condition of USB trigger.
Parameter
Name Type Range Default
<cond> Discrete {SOP|EOP|RC|SUSPend|EXITsuspend} SOP
Remarks
 SOP: indicates Start of Packet. The oscilloscope triggers at the sync bit of SOP.
 EOP: indicates End of Packet. The oscilloscope triggers at the end of the SEO portion of EOP.
 RC: indicates Reset Complete. The oscilloscope triggers when SEO is greater than 10 ms.
 SUSPend: indicates Enter Suspend. The oscilloscope triggers when the idle time of the bus is greater
than 3 ms.
 EXITsuspend: indicates Exit Suspend. The oscilloscope triggers when the bus exits from the idle state
for more than 10 ms.
Return Format
The query returns SOP, EOP, RC, SUSP, or EXIT.