MDO3000 Programmer Manual.pdf - 第104页
Command Groups T able 2-39: Search Commands (cont.) Command Description SEARCH:SEARCH<x>:TRIGger:A:SETHold:CLOCk: THReshold This command speci fi es the clock threshold setting for an setup/hold search SEARCH:SEARCH…
Command Groups
Table 2-39: Search Commands (cont.)
Command Description
SEARCH:SEARCH<x>:TRIGger:A:LOWerthreshold:
RF_FREQuency
This command specifies the threshold for RF Frequency vs.
Time trace searches. For runt and transition searches, this
level is the lower threshold. For other search types, this is
the single threshold. This command is used together with
SEARCH:SEARCH<x>:TRIGger:A:LOGIc:INPut:RF_FREQuency
to search for an instance when the waveform goes higher or lower
than the specified threshold.
SEARCH:SEARCH<x>:TRIGger:A:LOWerthreshold:
RF_PHASe
This command specifies the lower threshold, in degrees, for
searching the RF Phase vs. Time waveform. For runt and transition
searches, this l evel is the lower threshold. For other search types,
this is the single threshold. This command is used together with
SEARCH:SEARCH<x>:TRIGger:A:LOGIc:INPut:RF_PHASe to
search for an instance when the waveform goes higher or lower
than the specified threshold.
SEARCH:SEARCH<x>:TRIGger:A:PULSE Width:HIGHLimit This command specifies the upper limit, i n seconds,
when searching the record for pulses whose widths are
within or outside of a specified range of two values. (Use
SEARCH:SEARCH<x>:TRIGger:A:PULSEWidth:LOWLimit to
specify the lower limit of the range.)
SEARCH:SEARCH<x>:TRIGger:A:PULSE Width:LOWLimit This command specifies the lower limit, in seconds, when
searching the record for pulses whose w idths are within
or outside of a specified range of two values. (Use
SEARCH:SEARCH<x>:TRIGger:A:PULSEWidth:HIGHLimit to
specify the upper limit of the range.)
SEARCH:SEARCH<x>:TRIGger:A:PULSE Width:POLarity This command specifies the polarity for a pulse search
SEARCH:SEARCH<x>:TRIGger:A:PULSEWidth:SOUrce This command specifies the source waveform for a pulse search
SEARCH:SEARCH<x>:TRIGger:A:PULSEWidth:WHEn This command specifi es to search the waveform record for
pulses w ith a width (duration) that is less than, greater than,
equal to, or unequal to a specifi ed value (set using SEARCH:
SEARCH<x>:TRIGger:A:PULSEWidth:WIDth), OR whose w idths
fall outside of or within a specified range of two values (set using
SEARCH:SEARCH<x>:TRIGger:A:PULSEWidth:LOWLimit and
SEARCH:SEARCH<x>:TRIGger:A:PULSEWidth:HIGHLimit).
SEARCH:SEARCH<x>:TRIGger:A:PULSEWidth:WIDth This command specifies the w idth setting to use, in seconds,
when searching the waveform record for pulses of a certain width
(duration).
SEARCH:SEARCH<x>:TRIGger:A:RUNT:POLarity This command specifies the polarity setting for a runt search
SEARCH:SEARCH<x>:TRIGger:A:RUNT:SOUrce This command specifies the source setting for a runt search
SEARCH:SEARCH<x>:TRIGger:A:RUNT:WHEn This command specifies the condition setting for a runt search
SEARCH:SEARCH<x>:TRIGger:A:RUNT:WIDth This command specifies the width setting for a runt search
SEARCH:SEARCH<x>:TRIGger:A:SETH old:CLOCk:EDGE This command specifies the c lock slope setting for a setup/hold
search
SEARCH:SEARCH<x>:TRIGger:A:SETH old:CLOCk:SOUrce This command specifies the clock source setting for an setup/hold
search
MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual 2-73
Command Groups
Table 2-39: Search Commands (cont.)
Command Description
SEARCH:SEARCH<x>:TRIGger:A:SETHold:CLOCk:
THReshold
This command specifies the clock threshold setting for an setup/hold
search
SEARCH:SEARCH<x>:TRIGger:A:SETHold:DATa:SOUrce This command specifies the data source setting for an setup/hold
search
SEARCH:SEARCH<x>:TRIGger:A:SETHold:DATa:
THReshold
This command specifies the data threshold setting for an setup/hold
search
SEARCH:SEARCH<x>:TRIGger:A:SETHold:HOLD Time This command specifies the hold time setting for an setup/hold
search
SEARCH:SEARCH<x>:TRIGger:A:SETHold:SETTime This command specifies the setup time setting for an setup/hold
search
SEARCH:SEARCH<x>:TRIGger:A:SETHold:THReshold{:
MATH|:MATH1}
This command specifies the search setup and hold threshold for
the math waveform
SEARCH:SEARCH<x>:TRIGger:A:SETHold:THReshold:
REF<x>
This command specifies the search setup and hold threshold for
the selected r eference w aveform
SEARCH:SEARCH<x>:TRIGger:A:TIMEOut:POLarity
When searching using the
TIMEOut search type, this commands
specifies the polarity to be used.
SEARCH:SEARCH<x>:TRIGger:A:TIMEOut:S OU rce
When searching using the
TIMEOut search type, this command
specifies the source.
SEARCH:SEARC H<x >:T R IGger:A:TIMEOut:TIMe
When searching using the
TIMEOut search type, this command
specifies the timeout time, i n seconds.
SEARCH:SEARCH<x>:TRIGger:A{:TRANsition|:RISEFall}:
DELTatime
This command specifies the transition time setting for an transition
search
SEARCH:SEARCH<x>:TRIGger:A{:TRANsition|:RISEFall}:
POLarity
This command specifies the polarity setting for a transition search
SEARCH:SEARCH<x>:TRIGger:A{:TRANsition|:RISEFall}:
SOUrce
This command specifies the source setting for a transition search
SEARCH:SEARCH<x>:TRIGger:A{:TRANsition|:RISEFall}:
WHEn
This command specifies the condition setting for a transition search
SEARCH:SEARCH<x>:TRIGger:A:TYPe This command specifies the search type, ie.
EDGe|PULSEWidth|SETHold|RUNt|TRANsition|LOGIc|TIMEOut|BUS.
SEARCH:SEARCH<x>:TRIGger:A:UPPerthreshold:CH<x> This command specifi es the waveform upper threshold level for
all channel waveform searches.
SEARCH:SEARCH<x>:TRIGger:A:UPPerthreshold:MATH This command specifies the waveform upper threshold level for all
math waveform searches.
SEARCH:SEARCH<x>:TRIGger:A:UPPerthreshold:REF<x> This command specifies the waveform upper threshold l evel for all
reference waveform searches.
SEARCH:SEARCH<x>:TRIGger:A:UPPerthreshold:
RF_AMPlitude
For a runt or transition search using the RF Amplitude vs. Time
trace, this command specifies the upper threshold to be used by
the search engine.
2-74 MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual
Command Groups
Table 2-39: Search Commands (cont.)
Command Description
SEARCH:SEARCH<x>:TRIGger:A:UPPerthreshold:
RF_FREQuency
For a runt or transition search using the RF Frequency vs. Time
trace, this command specifies the upper threshold to be used by
the search engine.
SEARCH:SEARCH<x>:TRIGger:A:UPPerthreshold:
RF_PHASe
This command specifies the upper threshold to be used by the
search engine when performing a runt or transition search using
the RF Phase vs. Time trace.
Status and Error C om mand 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 2-40: Status and E rror Commands
Comma
nd
Description
ALLE
v?
Returns all events and their messages
BUSY
?
Returns oscilloscope status
*CL
S
Cle
ars status
DES
E
Thi
s command specifies the bits in the Device Event Status Enable Register
*E
SE
Th
is command specifies the bits in the Event Status Enable R egister
*
ESR?
R
eturns the contents of the Standard Event Status Register
E
VENT?
R
eturns 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 m essage in the standard event status register when all
pending operations are finished
Or returns "1" when all current operations are finished
*OPT? Returns a comma-separated list of installed options (not to be confused with
application modules) as an arbitrary ASCII string.
*PSC This command specifies the power on status flag
*PUD This command specifies a string of protected user data
*RST Resets the o scilloscope to factory default settings
*SRE This command specifies the bits in the Service Request Enable Register
*STB? Returns the contents of the Status Byte Register
*WAI Prevents the oscilloscope from executing further commands until all pending operations
finish
MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual 2-75