MDO3000 Programmer Manual.pdf - 第904页

Commands Listed in A lphabetical Order Group T rigger Syntax TRIGger:A:BUS :SOUrce {B1| B2|B3|B4} TRIGger:A:BUS :SOUrce? Arguments B1 s pecifies the Bus 1 sour ce. B2 s pecifies the Bus 2 sour ce. B3 s pecifies the Bus 3 so…

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Commands Listed in Alphabetical Order
Arguments
ANY
indicates any of the token types.
SOF indicates a SOF (start-of-frame) token type
OUT indicates an OUT token type.
IN indicates an IN token type.
SETUP indicates a SETUP token type.
Examples
TRIGGER:A:BUS:B1:USB:TOKENTYPE SETUP sets the token type to SETUP.
TRIGGER:A:BUS:B1:USB:TOKENTYPE? might return
:TRIGGER:A:BUS:B1:USB:TOKENTYPE SOF if the token type is SOF.
TRIGger:A:BUS:SOUrce
This command specifies the source for a serial or parallel bus trigger, with the
appropriate application module installed.
Conditions
For I
2
C or SPI bus signals, install the DPO4EMBD application module,
except for MDO3000 models, which require MDO3EMBD.
For RS-232, RS-422, RS-485, or UART bus signals, install the DPO4COMP
module, except for MDO3000 models, which require MDO3COMP.
For I
2
S, Left Justified (LJ), Right Justified (RJ), or TDM bus signals, install
the DPO4AUDIO module, except for MDO3000 models, which require
MDO3AUDIO.
For CAN or LIN bus signals, install the DPO4AUTO or DPO4AUTOMAX
module, except for MDO3000 models, which require MDO3AUTO.
For FlexRay bus signals, install the DPO4AUTOMAX module, except for
MDO3000 models, which require MDO3FLEX.
For Ethernet signals on the MDO4000/B/C and MSO4000B and DPO4000B,
install the DPO4ENET module. Note that ≥350 MHz bandwidth models
are recommended for 100BASE-TX.
For MIL-STD-1553 bus signals, install the DPO4AERO module, except for
MDO3000 models, which require MDO3AERO.
For USB bus signals, install the DPO4USB module, except for
MDO3000 models, which require MDO3USB. Note that 1 GHz bandwidth
models are recommended for high-speed (HS) USB.
A table is available listing the commands enabled by each application module.
(See page H-1, List of Beta Commands and Features.)
MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual 2-873
Commands Listed in Alphabetical Order
Group
Trigger
Syntax
TRIGger:A:BUS:SOUrce {B1|B2|B3|B4}
TRIGger:A:BUS:SOUrce?
Arguments
B1 specifies the Bus 1 source.
B2 specifies the Bus 2 source.
B3 specifies the Bus 3 source.
B4 specifies the Bus 4 source.
TRIGger:A:EDGE? (Query Only)
Returns the trigger source, coupling, and slope for the A edge trigger.
Group
Trigger
Syntax
TRIGger:A:EDGE?
Related Commands
TRIGger:A:LOGIc?
Examples
TRIGGER:A:EDGE? might return :TRIGGER:A:EDGE:SOURCE CH1;COUPLING
DC; SLO PE RISE
indicating the trigger source, coupling, and slope for the A
edge trigger.
TRIGger:A:EDGE:COUPling
This command specifies the type of coupling for the A edge trigger.
Group
Trigger
Syntax
TRIGger:A:EDGE:COUPling {AC|DC|HFRej|LFRej|NOISErej}
TRIGger:A:EDGE:COUPling?
Related Commands
TRIGger:A:EDGE:SOUrce,
TRIGger:A:EDGE:SLOpe
2-874 MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual
Commands Listed in Alphabetical Order
Arguments
AC specifies AC t
rigger coupling,
DC specifies DC trigger coupling, which passes all input signals to the trigger
circuitry.
HFRej specifies high-frequency rejection coupling, which attenuates signals
above 50 kHz before passing the signals to the trigger circuitry.
LFRej specifies low-freque
ncy rejection coupling, which attenuates signals below
50 kHz before passing the signals to the trigger circuitry.
NOISErej specifies noise-rejection coupling, which provides stable triggering
by increasing the trigger hysteresis. Increased hysteresis reduces the trigger
sensitivity to noise but may require greater trigger signal amplitude.
Examples
TRIGGER:A:EDGE:COUPLING DC sets the A edge trigger coupling to DC.
TRIGGER:A:EDGE:COUPLING? might return :TRIGGER:A:EDGE:COUPLING
DC
indicating that the A edge trigger coupling is set to DC.
TRIGger:A:EDGE:SLOpe
This command specifies the slope for the A edge trigger: rising, falling or either.
NOTE. A series of example command s equences showing different searches and
triggers is included as an appendix. (See page F-1, Search and Trigger Command
Sequence Examples.)
Group
Trigger
Syntax
TRIGger:A:EDGE:SLOpe {RISe|FALL|EITHer}
TRIGger:A:EDGE:SLOpe?
Related Commands
TRIGger:A:EDGE:SOUrce,
TRIGger:A:EDGE:COUPling
Arguments
RISe specifies to trigger on the rising or positive edge of a signal.
FALL specifies to trigger on the falling or negative edge of a signal.
EITHer specifies to trigger on either the rising or falling edge of a signal.
Examples
TRIGGER:A:EDGE:SLOPERISE sets the A edge trigger slope to positive, which
triggers on the rising edge of the signal.
MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual 2-875