MDO3000 Programmer Manual.pdf - 第914页

Commands Listed in A lphabetical Order TRIGger:A:LO GIc:INPut:RF This command specifies the logic level to use when the internal RF power leve li s the source for a logic pattern trigger . Conditions MDO4000/B and MDO4000…

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Commands Listed in Alphabetical Order
Arguments
RISe specifies t
o trigger on the rising or positive edge of a signal.
FALL specifies to trigger on the falling or negative edge of a signal.
TRIGger:A:LOGIc:INPut:CLOCk:SOUrce
This command specifies the channel to use as the clock source. The clock can
be selected as
NONE. A selection of None implies pattern trigger. Any other
selection implies state trigger.
Group
Trigger
Syntax
TRIGger:A:LOGIc:INPut:CLOCk:SOUrce {CH1|CH2|CH3|CH4|
D0|D1|D2|D3|D4|D5|D6|D7|D8|D9|D10|D11|D12|D13|D14|D15|RF|NON E}
TRIGger:A:LOGIc:INPut:CLOCk:SOUrce?
Arguments
CH1–CH4 specifies an analog channel as the clock source.
D0–D15 specifies a digital channel as the clock source. (MSO/MDO4000/B models
only as well as MDO3000 and MDO400C models with option MDO3MSO or
MDO4MSO installed.)
RF specifies the internal RF power level as the clock source. (MDO4000/B/C
models only. Also requires installation of an MDO4TRIG application module.)
NONE specifies a Pattern trigger.
TRIGger:A:LOGIc:INPut:D<x>
This command specifies the logic pattern for a trigger on digital channel <x>,
where x is the channel number.
Group
Trigger
Syntax
TRIGger:A:LOGIc:INPut:D<x> {HIGH|LOW|X}
TRIGger:A:LOGIc:INPut:D<x>?
Arguments
High specifies the logic high state.
Low specifies the logic low state.
X specifies a "don't c
are" state.
MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual 2-883
Commands Listed in Alphabetical Order
TRIGger:A:LO
GIc:INPut:RF
This command specifies the logic level to use when the internal RF power levelis
the source for a logic pattern trigger.
Conditions
MDO4000/B and MDO4000C with option SA3 or SA6 only. Also requires
installation of an MDO4TRIG application module.
Group
Trigger
Syntax
TRIGger:A:LOGIc:INPut:RF {HIGH|LOW|X}
TRIGger:A:LOGIc:INPut:RF?
Related Commands
TRIGger:A:LOGIc:THReshold:RF,TRIGger:A:LOGIc:FUNCtion,
TRIGger:A:LOGIc:PATtern:WHEn
Arguments
HIGH specifies to trigger on a high logic level.
LOW specifies to trigger on a low logic level.
X specifies a “don't care” condition.
Examples
TRIGger:A:LOGIc:INPut:RF HIGH spec
ifies to trigger on a high logic level
when the internal RF power level is the source for a logic pattern trigger.
TRIGger:A:LOGIc:INPut:RF? might r
eturn X, indicating that it doesn’t matter
whether the logic level is high or low.
TRIGger:A:LOGIc:PATtern? (Query Only)
Returns the conditions used for generating an A logic pattern trigger, with respect
to the defined input pattern, and identifies the time that the selected pattern may
be true and still generate the trigger.
Group
Trigger
Syntax
TRIGger:A:LOGIc:PATtern?
Examples
TRIGGER:A:LOGIC:PATTERN? might return
:TRIGGER:A:LOGIC:PATTERN:INPUT:CH1 HIGH;CH2
LOW;CH3 X;CH4 X;:TRIGGER:A:LOGIC:P ATTERN:WHEN
2-884 MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual
Commands Listed in Alphabetical Order
LESSTHAN;WHEN
:LESSLIMIT 16.0000E-9;LIM IT
16.0000E-9;:TRIGGER:A:LOGIC:PATTERN:DELTATIME 16.0000E-9
TRIGger:A:LOGIc:PATtern:DELTatime
This command specifies the pattern trigger delta time value. The time value is
used as part of the pattern trigger condition to determine if the duration ofalogic
pattern meets the specified time constraints.
Group
Trigger
Syntax
TRIGger:A:LOGIc:PATtern:DELTatime <NR3>
TRIGger:A:LOGIc:PATtern:DELTatime?
Arguments
<NR3> is a floating point value with exponent that sets the pattern trigger time
value. This argument has a range of 39.6E–9 (39.6 ns) to 10.0E0 (10 s), in
increments of 13.2 ns. Values that are not an increment of 13.2 ns are roundedto
the nearest correct value.
Examples
TRIGGER:A:LOGIC:PATTERN:DELTATIME 71.28E-8 sets the pattern trigger
delta time value to 712.8 ns.
TRIGger:A:LOGIc:PATtern:WHEn
This command specifies the pattern logic condition on which to trigger the
oscilloscope.
Group
Trigger
Syntax
TRIGger:A:LOGIc:PATtern:WHEn
{TRUe|FALSe|LESSthan|MOREthan|EQual|UNEQual}
TRIGger:A:LOGIc:PATtern:WHEn?
Arguments
TRUE triggers the oscilloscope when the pattern becomes true.
FALSE triggers the oscilloscope when the pattern becomes false.
LESSTHAN triggers the oscilloscope when the input pattern is true for a time period
less than the time period specified in
TRIGGER:A:LOGIC:PATTERN:DELTATIME.
MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual 2-885