MDO3000 Programmer Manual.pdf - 第955页

Commands Listed in Alphabetical Order Examples TRIGGER:B:LEV EL TTL sets the B trigger level to 1.4 V . TRIGGER:B:LEV EL? might return :TRI GGER:B:LEVEL 173.0000E-03 indicating that the B trigger level i s currently set …

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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
Commands Listed in Alphabetical Order
Examples
TRIGGER:B:LEV
EL TTL
sets the B trigger level to 1.4 V.
TRIGGER:B:LEVEL? might return :TRIGGER:B:LEVEL 173.0000E-03
indicating that the B trigger level is currently set at 173 mV.
TRIGger:B:LEVel:CH<x>
This command specifies the B trigger level for channel <x>, where x is the
channel number. Each Channel can have an independent Level.
Group
Trigger
Syntax
TRIGger:B:LEVel:CH<x> {ECL|TTL|<NR3>}
TRIGger:B:LEVel:CH<
x>?
Arguments
ECL specifies a preset ECL high level of –1.3V.
TTL specifies a preset TTL high level of 1.4V.
<NR3> is a floating point number that specifies the trigger level in user units
(usually volts).
Examples
TRIGGER:B:LEVEL:CH2? might return :TRIGGER:B:LEVEL:CH2
1.3000E+00
indicating that the B edge trigger is set to 1.3 V for channel 2.
TRIGGER:B:LEVEL:CH3 TTL sets the B edge trigger to TTL high level for
channel 3.
TRIGger:B:LEVel:D<x>
This command specifies the B trigger level for digital channel <x>, where x isthe
channel number. Each chann
el can have an independent level.
NOTE. MDO3000 models only have two digital threshold contro ls: one for digital
channels D0 - D7, and the other for D8 - D15. Digital channel trigger levels
cannot be set independently for these models. Changing one digital channel’s
threshold l evel changes all of the channels’ levels in the same set.
Group
Trigger
Syntax
TRIGger:B:LEVel:D<x> {ECL|TTL|<NR3>}
TRIGger:B:LEVel:D<x>?
MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual 2-925
Commands Listed in Alphabetical Order
Arguments
ECL specifies a p
reset ECL high level of –1.3V.
TTL specifies a preset TTL high level of 1.4V.
<NR3> is a floating point number that specifies the trigger level in user units
(usually volts).
TRIGger:B:LOWerthreshold:CH<x>
This command specifies the B trigger lower threshold for the channel <x>, where
x is the channel number. Each channel can have an independent level. Used in
runt and transition triggers as the lower threshold. Used for all other trigger types
as the single level/threshold.
Group
Trigger
Syntax
TRIGger:B:LOWerthreshold:CH<x> {ECL|TTL|<NR3>}
TRIGger:B:LOWerthreshold:CH<x>?
Arguments
ECL specifies a preset ECL high level of –1.3V.
TTL specifies a preset TTL high level of 1.4V.
<NR3> is a floating point number that specifies the threshold level, in volts.
TRIGger:B:LOWerthreshold:D<x>
Sets or queries the lower threshold for the digital channel selected. Each channel
can have an independent level. Used in runt and transition triggers as the lower
threshold. Used for all other trigger types as the single level/threshold.
NOTE. MDO3000 models only have two di
gital threshold controls: one for digital
channels D0 - D7, and the other for D8 - D15. Digital channel trigger levels
cannot be set independently for these models. Changing one digital channel’s
threshold level changes all of the channels’ levels in the same set.
Group
Trigger
Syntax
TRIGger:B:LOWerthreshold:D<x> {<NR3>|ECL|TTL}
TRIGger:B:LOWerthreshold:D<x>?
2-926 MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual