MDO3000 Programmer Manual.pdf - 第951页

Commands Listed in Alphabetical Order TRIGger:B:BY Selects or returns whether the B trigger occurs after a specified number of e vents or a specified period of time after the A trigger . Group Tr i g g e r Syntax TRIGger:B…

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Commands Listed in Alphabetical Order
Syntax
TRIGger:A:VID
eo{:SYNC|:FIELD}
{ODD|EVEN|ALLFields|ALLLines|NUMERic}
TRIGger:A:VIDeo{:SYNC|:FIELD}?
A
rguments
ODD argument sets the oscilloscope to trigger on interlaced video odd fields.
EVEN argument sets the oscilloscope to trigger on interlaced video even fields.
ALLFields argument sets the oscilloscope to trigger on all fields.
ALLLines argument sets the oscilloscope to trigger on all video lines.
NUMERic argument sets the oscilloscope to trigger on the video signal line
specified by the TRIGger:A:VIDeo:LINE command.
Examples
TRIGGER:A:VIDEO:FIELD EVEN sets the A video trigger so that it will trigger
on even fields.
TRIGGER:A:VIDEO:FIELD? might return :TRIGGER:A:VIDEO:FIELD
ALLFIELDS
indicating that the A video will trigger on all video fields.
TRIGger:B
Sets the B trigger level to 50% of minimum and maximum. The query form
of this command returns the B trigger parameters. This command is similar to
selecting B Event (Delayed) Trigger Setup from the Trigger menu and then
viewing the current setups.
Group
Trigger
Syntax
TRIGger:B SETLevel
TRIGger:B?
Related Commands
TRIGger:A
Arguments
SETLevel sets the B trigger level to 50% of MIN and MAX.
Examples
TRIGGER:B SETLEVEL sets the B trigger level to 50% of MIN and MAX.
TRIGGER:B? might return the following B trigger parameters:
:TRIGGER:B:STATE 0;TYPE EDGE; LEVEL -220.0000E-3;BY
TIME;EDGE:SOURCE CH1;SLOPE RISE;CO UPLING DC; :TRIGGER:B:TIM E
16.0000E-9;EVENTS:COUNT 2
2-920 MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual
Commands Listed in Alphabetical Order
TRIGger:B:BY
Selects or returns whether the B trigger occurs after a specified number of events
or a specified period of time after the A trigger.
Group
Trigger
Syntax
TRIGger:B:BY {EVENTS|TI Me}
TRIGger:B:BY?
Related Commands
TRIGger:B:EVENTS:COUNt, TRIGger:B:TIMe,,
Arguments
EVENTS sets the B trigger to take place following a set number of trigger
events after the A trigger occurs. The number of events is specified by
TRIGger:B:
EVENTS:COUNt.
TIMe sets the B trigger to occur a set time after the A trigger event. The time
period is specified by TRIGger:B:
TIMe.
Examples
TRIGGER:B:BY TIME sets the B trigger to occur at a set time after the A trigger
event.
TRIGGER:B:BY? might return :TRIGGER:B:BY EVENTS indicating that the B
trigger takes place following a set number of trigger events after the A trigger
occurs.
TRIGger:B:EDGE? (Query Only)
Returns the source, slope, and coupling for B trigger.
Group
Trigger
Syntax
TRIGger:B:EDGE?
Related Commands
TRIGger:B:EDGE:COUPling,
TRIGger:B:EDGE:SLOpe,
TRIGger:B:EDGE:SOUrce
Examples
TRIGGER:B:EDGE? might return :TRIGGER:B:EDGE:SOURCE CH1; SLOP E
RISE;COUPLING DC
MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual 2-921
Commands Listed in Alphabetical Order
TRIGger:B:ED
GE:COUPling
This command specifies the type of coupling for the B edge trigger.
Group
Trigger
Syntax
TRIGger:B:EDGE:COUPling {DC|HFRej|LFRej|NOISErej}
TRIGger:B:EDGE:COUPling?
Related Commands
TRIGger:B:EDGE?
Arguments
DC selects DC trigger coupling.
HFRej selects high-frequency reject coupling.
LFRej selects low-frequency reject coupling.
NOISErej selects DC low sensitivity.
Examples
TRIGGER:B:EDGE:COUPLING DC selects DC for the B trigger coupling.
TRIGGER:B:EDGE:COUPLING? might return : TRIGGER:B:EDGE:COUPLING
HFR
which indicates that the B trigger type is set to high-frequency reject coupling.
TRIGger:B:EDGE:SLOpe
This command specifies the slope for the B trigger.
Group
Trigger
Syntax
TRIGger:B:EDGE:SLOpe {RISe|FALL}
TRIGger:B:EDGE:SLOpe?
Related Commands
TRIGger:B:EDGE?
Arguments
RISe triggers on the rising or positive edge of a signal.
FALL triggers on the falling or negative edge of a signal.
Examples
TRIGGER:B:EDGE:SLOPE FALL sets the B edge trigger to occur on the falling
slope.
2-922 MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual