Connect-Tek USB-2 Spécifications Page 54

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Command Groups
Table 2-30: Status and Error Commands (cont.)
Command
Description
*ESE Sets or returns the bits in the Event Status
Enable Register
*ESR? Returns the contents of the Standard Event
Status Register
EVENT? Returns event code from the event queue
EVMsg? Returns event code, message from the event
queue
EVQty? Return number of events in the event queue
*OPC Generates the operation complete message
in the standard event status register when all
pending operations are nished
Or returns "1" when all current operations
are nished
*PSC Sets or returns the power on status ag
*PUD Sets or returns a string of protected user data
*RST Resets the oscilloscope to factory default
settings
*SRE Sets or returns the bits in the Service
Request Enable Register
*STB? Returns the contents of the Status By te
Register
*WAI Prevents the oscilloscope from executing
further commands until all pending
operations nish
Trigger Command G roup
Use the commands in the Trigger Command Group to control all aspects of
triggering for t he oscilloscope. There is one trigger: A. You can perform edge,
pulse width, logic, video, runt, transition (rise/fall time), setup & hold and bus
triggering using the A trigger.
Example command sequences that show different triggers and searches are
available. (See page E-1, Search and Trigger Command Sequence Examples.).
Edge Trigger
Edge triggering lets you display a waveform at or n ear the point where the signal
passes through a voltage level of your choosing.
To set up an edge trigger, set the A trigger type to
EDGe using the command
TRIGger:A:TYPe. Then use the commands TRIGger:A:EDGE:COUPling,
TRIGger:A:EDGE:SLOpe,andTRIGger:A:EDGE:SOUrce You can
2-38 MSO2000B, DPO2000B, MSO2000 and DPO2000 Series Oscilloscopes Programmer Manual
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