MDO3000 Programmer Manual.pdf - 第924页

Commands Listed in A lphabetical Order LINE specifies A C line voltage as the trigger source. D0-D15 specifies a digital channel as the trigger source. RF specifies the internal RF power leve l as the trigger source. (MDO40…

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Commands Listed in Alphabetical Order
TRIGger:A:PUL
SEWidth:LOWLimit 100.0E-9
TRIGger:A:PULSEWidth:HIGHLimit 110.0E-9
TRIGger:A:PULSEWidth:WHEn OUTside
TRIGger:A:PULSEWidth:POLarity
This comman
d specifies the polarity for a pulse width trigger.
Group
Trigger
Syntax
TRIGger:A:PULSEWidth:POLarity {NEGative|POSitive}
TRIGger:A:PULSEWidth:POLarity?
Arguments
NEGative specifies a negative pulse.
POSitive specifies a positive pulse.
Examples
TRIGGER:A:PULSEWIDTH:POLARITY NEGATIVE sets the pulse polarity to
negative.
TRIGGER:A:PULSEWIDTH:POLARITY? might return
:TRIGGER:A:WIDTH:POLARITY POSITIVE indicating a positive pulse.
TRIGger:A:PULSEWidth:SOUrce
This command specifies the source waveform for a pulse width trigger.
Group
Trigger
Syntax
TRIGger:A:PULSEWidth:SOUrce
{CH1|CH2|CH3|CH4|LINE|AUX|D0|D1|D2|D3|D4|D5|D6|D7|D8|D9|
D10|D11|D12|D13|D14|D15|RF}
TRIGger:A:PULSEWidth:SOUrce?
Arguments
CH1–CH4 specifies an analog input channel as the pulse-width trigger source.
AUX specifies an external trigger using the Aux In connector located on the front
panel of the oscilloscope. (For MSO/DPO 4000B series models, MDO4000C
series models without an RF option, and 2-channel MDO3000 models only.)
MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual 2-893
Commands Listed in Alphabetical Order
LINE specifies A
C line voltage as the trigger source.
D0-D15 specifies a digital channel as the trigger source.
RF specifies the internal RF power level as the trigger source. (MDO4000/B
models and MDO4000C models with option SA3 or SA6 installed only. Also
requires installation of an MDO4TRIG application module.)
Examples
TRIGGER:A:PULSEWIDTH:SOURCE CH1 sets channel 1 as the pulse width source.
TRIGGER:A:PULSEWIDTH:SOURCE? might return :TRIGGER:A:PULSEWIDTH:
SOURCE CH1
indicating that channel 1 is the pulse width trigger source.
TRIGger:A:PULSEWidth:WHEn
This command specifies to trigger when a pulse is detected with a width (duration)
that is less than, greater than, equal to, or unequal to a specified value (setusing
TRIGger:A:PULSEWidth:WIDth), OR whose width falls outside of or within a
specified range of two values (set using TRIGger:A:PULSEWidth:LOWLimit and
TRIGger:A:PULSEWidth:HIGHLimit).
Group
Trigger
Syntax
TRIGger:A:PULSEWidth:WHEn
{LESSthan|MOREthan|EQual|UNEQual|WIThin|OUTside}
TRIGger:A:PULSEWidth:WHEn?
Related Commands
TRIGger:A:PULSEWidth:WIDth
TRIGger:A:PULSEWidth:LOWLimit
TRIGger:A:PULSEWidth:HIGHLimit
TRIGger:A:PULSEWidth:SOUrce
Arguments
LESSthan causes a trigger when a pulse is detected with a width less than the
time set by the TRIGger:A:PULSEWidth:WIDth command.
MOREthan causes a trigger when a pulse is detected with a width greater than the
time set by the TRIGger:A:PULSEWidth:WIDth command.
EQual causes a trigger when a pulse is detected with a width equal to the time
period specified in TRIGger:A:PULSEWidth:WIDth within a ±5% tolerance.
UNEQual causes a trigger when a pulse is detected with a width greater than or less
than (but not equal) the time period specified in TRIGger:A:PULSEWidth:WIDth
within a ±5% tolerance.
2-894 MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual
Commands Listed in Alphabetical Order
WIThin causes a
trigger when a pulse is detected that is within a range set by
two values.
OUTside cause
s a trigger when a pulse is detected that is outside of a range set
by two values.
Examples
TRIGGER:A:PULSEWIDTH:WHEN LESSTHAN 2.0000E-9 causes the
oscilloscope to trigger when a pulse is detected that is shorter than 2 ns.
TRIGGER:A:PULSEWIDTH:WHEN? might return :TR IGGER:A:PULSEWIDTH:
WHEN GR EATER THAN 2.0000E-9
indicating that a trigger will be caused when
a pulse is detected great
er than 2 ns.
To trigger on pulses with durations (widths) that fall outside of the range of 100
nanoseconds to 110 nano
seconds:
TRIGger:A:PULSEWidth:LOWLimit 100.0E-9
TRIGger:A:PULSEWidth:HIGHLimit 110.0E-9
TRIGger:A:PULSEWidth:WHEn OUTside
TRIGger:A:PULSEWidth:WIDth
This command specifies the pulse width (duration), in seconds, for triggering
on pulses whose wid
ths are greater than, less than, equal to, or not equal to the
specified value.
Group
Trigger
Syntax
TRIGger:A:PULSEWidth:WIDth <NR3>
TRIGger:A:PULSEWidth:WIDth?
Related Commands
TRIGger:A:PULSEWidth:WHEn
Arguments
<NR3> is a floating point number that specifies the pulse width in seconds.
Examples
TRIGGER:A:PULSEWIDTH:WIDTH 5.0E-6 sets the pulse width to 5 µs.
TRIGGER:A:PULSEWIDTH:WIDTH? might return :TRIGGER:A:PULSEWIDTH:
WIDTH 2 .0000E-9
indicating that the pulse width is set to 2 ns.
MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual 2-895