MDO3000 Programmer Manual.pdf - 第110页

Command Groups Bus, Video and RF application modules A table is avail able that lists all commands enabled by each application module (See page H-1, List of Beta Commands and Featur es .) For I 2 C or SPI b us signals, i…

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Command Groups
To set up a video
trigger, set the A trigger type to
VIDeo using the
command TRIGger:A:TYPe.ThenuseTRIGger:A:VIDeo:SOUrce,
TRIGger:A:VIDeo:STANdard,TRIGger:A:VIDeo:CUSTom{:FORMat|:TYPe},
and related commands.
Sequence Trigger
Sequence triggering occurs when both the A and B triggers are used in edge
triggering. Using an MDO4000/B/C oscilloscope with an MDO4TRIG application
module installed, you can use the RF power level as a source in a sequence trigger.
To set up a sequence trigger, first set up an edge trigger for the A channel as
above. Then use TRIGger:B:EDGE:COUPling, TRIGger:B:EDGE:SLOpe,and
TRIGger:B:EDGE:SOUrce.
Trigg ering on the RF Power
Level (MDO4000/B/C Series
Models Only)
The MDO4000/B/C allows you to trigger on a change in the RF power level
as a source for Edge triggering. This enables your oscilloscope to trigger
as the RF power envelope passes through a specific power level. Using an
MDO4000/B/C model with an MDO4TRIG application module installed, the RF
power
level can also be used as a source for pulse width, timeout, runt, logic and
sequence (A and B) triggers.
To do t
his, use TRIGger:A:PULSEWidth:SOUrce, TRIGger:A:TIMEOut:
SOUrce, TRIGger:A:RUNT:SOUrce, TRIGger:A:LOWerthreshold:RF,
TRIGger:A:UPPerthreshold:RF, TRIGger:A:LOGIc:INPut:CLOCk:SOUrce,
TRIGger:A:LOGIc:INPut:RF, TRIGger:A:LOGIc:THReshold:RF,etc.
The RF power level being triggered on is the total power acquired within the
band, not just the current span.
MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual 2-79
Command Groups
Bus, Video and RF
application modules
A table is avail
able that lists all commands enabled by each application module
(See page H-1, List of Beta Commands and Features.)
For I
2
C or SPI b
us 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, exc
ept for MDO3000 models, which require MDO3COMP.
For I
2
S, Left Justified (LJ), Right Justified (RJ), or TDM bus signals, install
the DPO4AU
DIO module, except for MDO3000 models, which require
MDO3AUDIO.
For CAN, C
AN FD, 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, when tested with the MDO4000/B/C and
MSO/DPO4000B, install the DPO4ENET module. Note that ≥350 MHz
bandwidth models are recommended for 100BASE-TX.
For MIL-STD-1553 or ARINC429 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.
For video signals, install the DPO4VID module, except for the
MDO3000 models, which do not require a module.
For RF signals (MDO4000/B/C Series only), install the MDO4TRIG module.
Table 2-41: Trigger Commands
C
ommand
Description
TRIGger
Forces a trigger event to occur
TRIGger:A Sets A trigger level to 50% or returns current A trigger parameters
TRIGger:A:BANDW idth:RF :HIGH? Returns the high end of the power level trigger bandwidth range as an NR3
valueinhertz.
TRIGger:A:BANDW idth:RF :LOW ? Returns the low end of the power level trigger bandwidth range as an NR3
valueinhertz.
TRIGger:A:BUS This command specifies the bus type to trigger on.
TRIGger:A:BUS:B<x>:ARINC429A:CONDition This command sets the condition to use when triggering on a ARINC429 bus
signal (word start, label, matching data, word end, or error).
TRIGger:A:BUS:B<x>:ARINC429A:DATA:HIVALue This command specifies the high value to use when triggering on a ARINC429
bus data field.
2-80 MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual
Command Groups
Table 2-41: Trigger Commands (cont.)
Command
Description
TRIGger:A:BUS:B<x>:ARINC429A:DATA:
QUALifier
This command sets the qualifier (<, >, =, <=, >=, not =, in range, out of range)
to use when triggering on a ARINC429 bus data field.
TRIGger:A:BUS:B<x>:ARINC429A:DATA:VALue This command specifies the low value to use when triggering on a ARINC429
bus data field.
TRIGger:A:BUS:B<x>:ARINC429A:ERRTYPE This command specifies the error type to use when triggering on a ARINC429
bus signal.
TRIGger:A:BUS:B<x>:ARINC429A:LABel:
HIVALue
This command specifies the high value to use when triggering on a ARINC429
bus label field.
TRIGger:A:BUS:B<x>:ARINC429A:LABel:
QUALifier
This command sets the qualifier (<, >, =, <=, >=, not =, in range, out of range)
to use when triggering on a ARINC429 bus label field.
TRIGger:A:BUS:B<x>:ARINC429A:LABel:VALue This command specifies the low value to use when triggering on a ARINC429
bus label field.
TRIGger:A:BUS:B<x>:ARINC429A:SDI This command specifies the SDI portion of the packet data to be used when
triggering on ARINC429 bus data.
TRIGger:A:BUS:B<x>:ARINC429A:SSM This command specifies the SSM portion of the packet data to be used when
triggering on a ARINC429 bus data.
TRIGger:A:BUS:B <x>:AUDio:CONDition This command sets the condition (start of frame o r matching data) to be used
when triggering on an audio bus signal.
TRIGger:A:BUS:B<x>:AUDio:DATa:HIVALue
This command sets the upper word value to be used when triggering on an
audio bus signal.
TRIGger:A:BUS:B <x >:AUD io:D ATa:OFFSet This command sets the data offset value to be used when triggering on an
audio bus signal.
TRIGger:A:BUS:B <x >:AUD io:D ATa:QUALifier This command sets the qualifier (<, >, =, <=, >=, not =, in range, out of range)
to be used when triggering on an audio bus signal.
TRIGger:A:BUS:B<x>:AUDio:DATa:VALue
This command sets the lower word value to be used when triggering on an
audio bus signal.
TRIGger:A:BUS:B <x>:AUDio:DATa:WORD This command sets the alignment of the data (left, right or either) to be used to
trigger on an audio bus signal.
TRIGger:A:BUS:B <x>:CAN:CONDition This command sets the condition (start of frame, frame type, identifier,
matching data, end of frame, missing ACK field, bit-stuffing error, form error,
any error, CAN FD BRS bit, or CAN FD ESI bit) to be used when triggering
on a CAN bus signal.
TRIGger:A:BUS:B <x >:CAN:DATa:DIRection This command sets the data direction (read, write or “nocare”) to be used to
search on a CAN bus signal.
TRIGger:A:BUS:B <x >:CAN:DATa:OFFSet This command specifies the data offset for CAN data triggering
TRIGger:A:BUS:B <x >:CAN :DATa:QU ALifier This command sets the qualifier (<, >, =, not =, <=) to be used when triggering
on a CAN bus signal.
TRIGger:A:BUS:B <x>:CAN:DATa:SIZe This command sets the length of the data string, in bytes, to be used when
triggering on a C AN bus signal.
TRIGger:A:BUS:B<x>:CAN:DATa:VALue
This command sets the binary data value to be used when triggering o n a
CAN bus signal.
MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual 2-81