MDO3000 Programmer Manual.pdf - 第953页

Commands Listed in Alphabetical Order TRIGGER:B:EDG E:SLOPE? might return :TRIGGE R:B:EDGE:SLOPE RISE indicating that the B edge trigger occurs on the rising slope. TRIGger:B:EDGE:SOUrce This command s pecifies the source…

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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
Commands Listed in Alphabetical Order
TRIGGER:B:EDG
E:SLOPE?
might return :TRIGGER:B:EDGE:SLOPE RISE
indicating that the B edge trigger occurs on the rising slope.
TRIGger:B:EDGE:SOUrce
This command specifies the source for the B trigger.
Group
Trigger
Syntax
TRIGger:B:EDGE:SOUrce {CH1|CH2|CH3|CH4|AUX|LINE|RF}
TRIGger:B:EDGE:SOUrce?
Related Commands
TRIGger:B:EDGE?
Arguments
CH1–4 specifies an analog channel as the B trigger source.
AUX specifies an external trigger using the Aux In connector located on the
front panel of the oscilloscope as the B trigger source. (For MSO/DPO 4000B
series models, MDO4000C series models without an RF option, and 2-channel
MDO3000 models only.)
LINE specifies the AC power line as the B trigger source.
RF specifies to use the internal RF power level as the source. (MDO4000/B/C
models only). Also requires installation of an MDO4TRIG application module.)
Examples
TRIGGER:B:EDGE:SOURCE CH4 sets channel 4 as the input source for the B
trigger.
TRIGGER:B:EDGE:SOURCE? might return :TRI GGER:B:EDGE:SOURCE CH1
indicating that the current input source for the B trigger is channel 1.
TRIGger:B:EVENTS? (Query Only)
Returns the current B trigger events parameter.
Group
Trigger
Syntax
TRIGger:B:EVENTS?
Related Commands
TRIGger:B:EVENTS:COUNt
MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual 2-923
Commands Listed in Alphabetical Order
Examples
TRIGGER:B:EVE
NTS?
might return
:TRIGGER:B:EVENTS:COUNT 2
indicating that 2 events must occur before the B trigger occurs.
TRIGger:B:EVENTS:COUNt
This command specifies the number of events that must occur before the B trigger
(when TRIG:DELay:BY is set to EVENTS).
Group
Trigger
Syntax
TRIGger:B:EVENTS:COUNt <NR1>
TRIGger:B:EVENTS:COUNt?
Related Commands
TRIGger:B:EVENTS?
Arguments
<NR1> is the number of B trigger events, which can range from 1 to 10,000,000.
Examples
TRIGGER:B:EVENTS:COUNT 4 specifies that the B trigger will occur four trigger
events after the A trigger.
TRIGGER:B:EVENTS:COUNT? might return :TRIGGER:B:EVENTS:COUNT 2
indicating that two events must occur after the A trigger before the B trigg
er
can occur.
TRIGger:B:LEVel
This co
mmand specifies the level for the B trigger.
Group
Trigger
Syntax
TRIGger:B:LEVel {TTL|<NR3>}
TRIGger:B:LEVel?
Related Commands
TRIGger:B, TRIGger:B:EDGE:SOUrce
Arguments
TTL specifies a preset TTL high level of 1.4 V.
<NR3> is a floating point number that specifies the B trigger level, in volts.
2-924 MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual