Command Groups
Runt triggerin
g lets you trigger on a pulse amplitude that crosses one threshold
but fails to cross a second threshold before recrossing the first.
To set up a runt
trigger, first set the trigger type to
PULSe using the
command TRIGger:A:TYPe. Then select
RUNt using the command
TRIGger:A:PULse:CLAss.ThenuseTRIGger:A:RUNT:SOUr ce,
TRIGger:A:RUNT:WIDth, TRIGger:A:RUNT:WHEn, TRIGger:A:
UPPerthreshold:CH<x> and related commands. You can set the threshold
voltage levels using TRIGger:A:LEVel:AUXin, TRIGger:A:LEVel:CH<x>,or
TRIGger:A
:LEVel:D<x>.
Transition Trigger
Transition triggering (also called rise/fall time, and once known as slew rate)
causes a trigger on pulse edges that traverse between two thresholds at a rate faster
than or s
lower than the specified time.
To set up a transition trigger, first set the trigger type to
PULSe using the command
TRIGge
r:A:TYPe.Thenselect
TRANsition using the command TRIGger:
A:PULse:CLAss.ThenuseTRIGger:A{:TRANsition|:RISEFall}:SOUrce,
TRIGger:A{:TRANsition|:RISEFall}:DELTatime and related commands.
You can set the threshold voltage levels using TRIGger:A:LEVel:AUXin,
TRIGger:A:LEVel:CH<x>,orTRIGger:A:LEVel:D<x>.
Bus Trigger
Bus triggering can be performed if you have one or more appropriate application
modules installed (see below for application module list).
To set up a bus trigger, set the A trigger type to
BUS using the command
TRIGger:A:TYPe. Specify which bus (1-4) to trigger on using
TRIGger:A:BUS:SOUrce. Set the bus type (i.e., parallel, I
2
C, etc. using the
command TRIGger:A:BUS. Then set the appropriate trigger criteria according to
b
us type (using TRIGger:A:BUS:B<x>:LIN:CONDition,etc.)
Video T rigger
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,, and rela t ed commands.
Serial bus application
modules
A table is available that lists all commands enabled by each application module
(See page D-1, Application M odule-enabled Commands.)
For I
2
C or SPI buses, install the DPO2EMBD application module.
For RS-232, RS-422, RS-485, or UART buses, install the DPO2COMP
module.
For CAN or LIN buses, install the DPO2AUTO module.
2-40 MSO2000B, DPO2000B, MSO2000 and DPO2000 Series Oscilloscopes Programmer Manual