Commands Listed in Alphabetical Order
TRIGger:A:LO
Werthreshold:D<x>
Sets the lower threshold for the digital channel selected. Each channel canhave
an independent level. Used in runt and transition as the lower threshold. Used for
all other tri
gger types as the single level/threshold.
NOTE. MDO3000 models only have two digital threshold controls: one for digital
channels D0 - D7, and the o ther 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:A:LOWerthreshold:D<x> {<NR3>|ECL|TTL}
TRIGger:A:LOWerthreshold:D<x>?
Arguments
<NR3> is a floating point number that specifies the threshold voltage, in volts.
ECL specifies a preset ECL high level of –1.3V.
TTL specifies a preset TTL high level of 1.4V.
Examples
TRIGGER:A:LOWERTHRESHOLD:D1 0.5 sets the lower threshold to 0.5 volts.
TRIGGER:A:LOWERTHRESHOLD:D1? might return
TRIGGER:A:LOWERTHRESHOLD:D1 -1.3000 indicating the lower threshold
is set to -1.3 volts.
TRIGger:A:LOWerthreshold:RF
This command specifies the lower threshold when using the internal RF power
level for a RUNT trigger, or the single threshold in the cases of the PULSE and
TIMEOUT triggers.
To specify the upper threshold for the internal RF power level for the RUNT
trigger type, use the command TRIGger:A:UPPerthreshold:RF. To choose the
RUNT trigger type, use the command TRIGger:A:PULse:CLAss.
Conditions
MDO4000/B/C models only. Also requires installation of an MDO4TRIG
application module.
Group
Trigger
MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual 2-889
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