Command Groups
Search Commands (cont.)
Command Description
SEARCH:SEARCH<x>:TRIGger:A:
SETHold:THReshold:REF<x>
Sets or returns the trigger search setup and
hold threshold for the selected reference
waveform
SEARCH:SEARCH<x>:TRIGger:A{:
TRANsition|:RISEFall}:DELTatime
Sets or returns the transition time setting for
an transition search
SEARCH:SEARCH<x>:TRIGger:A{:
TRANsition|:RISEFall}:POLarity
Sets or returns the polarity setting for an
transition search
SEARCH:SEARCH<x>:TRIGger:A{:
TRANsition|:RISEFall}:SOUrce
Sets or returns the source setting for an
transition search
SEARCH:SEARCH<x>:TRIGger:A{:
TRANsition|:RISEFall}:WHEn
Sets or returns the condition setting for an
transition search
SEARCH:SEARCH<x>:TRIGger:A:TYPe Sets or returns the trigger type setting for a
search
SEARCH:SEARCH<x>:TRIGger:A:
UPPerthreshold:CH<x>
Setsor returns the waveform upper threshold
level for all channel waveform searches
SEARCH:SEARCH<x>:TRIGger:A:
UPPerthreshold:MATH
Setsor returns the waveform upper threshold
level for all math waveform searches
SEARCH:SEARCH<x>:TRIGger:A:
UPPerthreshold:REF<x>
Setsor returns the waveform upper threshold
level for all reference waveform searches
Status and Error Command Group

Use the commands in the Status and Error Command Group to determine the

status of the oscilloscope and control events.

Several commands and queries used with the oscilloscope are common to all

IEEE488.2 compliant devices. The IEEE Std 488.2-1987 defines these commands

and queries. The common commands begin with an asterisk (*) character.

Table 2-30: Status and Error Commands

Command Description
ALLEv? Returns all events and their messages
BUSY? Returns oscilloscope status
*CLS Clears status
DESE Sets or returns the bits in the Device Event
Status Enable Register
*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

MSO4000 and DPO4000 Series Programmer Manual 2-47