MDO3000 Programmer Manual.pdf - 第945页

Commands Listed in Alphabetical Order TRIGger:A:VI Deo:HOLDoff:FIELD This command sets the video trigger holdoff, in terms of video fields, to use for triggering on video signals. Conditions This command requires a DPO 4V…

100%1 / 1158
Commands Listed in Alphabetical Order
Group
Trigger
Syntax
TRIGger:A:VIDeo:CUSTom:LINEPeriod <NR3>
TRIGger:A:VIDeo:CUSTom:LINEPeriod?
Arguments
<NR3> is the custom video line period.
Examples
TRIGGER:A:VIDEO:CUSTOM:LINEPERIOD 50.5E-6 sets the video line period
to 50.5 μs.
TRIGGER:A:VIDEO:CUSTOM:LINEPERIOD? might return
TRIGGER:A:VIDEO:CUSTOM:LINEPERIOD 63.5600E-6 indicating
the video line period is set to 63.56 μs.
TRIGger:A:VIDeo:CUSTom:SYNCInterval
This command sets the sync interval for the standard under test to use for
triggering on video signals. This is only required for BiLevel Custom. To use
this command, you must also set the video standard to
BILevelcustom (using
TRIGger:A:VIDeo:STANdard).
Conditions
This command requires a DPO4VID application module to use any standard
besides NTSc, PAL, or SECAM, except for MDO3000 models, which do not
require an application module.
Group
Trigger
Syntax
TRIGger:A:VIDeo:CUSTom:SYNCInterval <NR3>
TRIGger:A:VIDeo:CUSTom:SYNCInterval?
Arguments
<NR3> is the sync interval.
Examples
TRIGGER:A:VIDEO:CUSTOM:SYNCINTERVAL 4.0E-6 sets the sync interval is
set to 4.0 μs.
TRIGGER:A:VIDEO:CUSTOM:SYNCINTERVAL? might return
TRIGGER:A:VIDEO:CUSTOM:SYNCINTERVAL 4.7200E-6 indicating the sync
interval is set to 4.72 μs.
2-914 MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual
Commands Listed in Alphabetical Order
TRIGger:A:VI
Deo:HOLDoff:FIELD
This command sets the video trigger holdoff, in terms of video fields, to use for
triggering on video signals.
Conditions
This command requires a DPO4VID application module to use any standard
besides NTSc, PAL, or SECAM, except for MDO3000 models, which do not
require an
application module.
Group
Trigger
Syntax
TRIGger:A:VIDeo:HOLDoff:FIELD <NR3>
TRIGger:A:VIDeo:HOLDoff:FIELD?
Arguments
<NR3> argument is a real number from 0.0 to 8.5 in increments of 0.5. The
argument sets the number of fields that the oscilloscope waits before rearming
the video trigger.
Examples
TRIGGER:A:VIDEO:HOLDOFF:FIELD? might return
:TRIGger:A:VIDeo:HOLdoff:FIELD 5 indicating that the oscilloscope is set
to wait 5 video fields before rearming the trigger.
TRIGGER:A:VIDEO:HOLDOFF:FIELD 4.5 sets the oscilloscope to wait 4.5 video
fields before rearming the trigger.
TRIGger:A:VIDeo:LINE
This command lets you set the specific video line number to be used for triggering
on a video signal. You must also use the TRIGger:A:VIDeo{:SYNC|:FIELD}
command to specify
NUMERic as the video field to use.
Conditions
This command requires a DPO4VID application module to use any standard
besides NTSc, PAL, or SECAM, except for MDO3000 models, which do not
require an application module.
Group
Trigger
Syntax
TRIGger:A:VIDeo:LINE <NR1>
TRIGger:A:VIDeo:LINE?
Related Commands
TRIGger:A:VIDeo{:SYNC|:FIELD}
MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual 2-915
Commands Listed in Alphabetical Order
Arguments
<NR1> argument
is an integer that sets the video line number on which the
oscilloscope triggers. The following table lists the valid choices, depending on the
active video standard.
Video Standa
rd
Line Number R
ange
525/NTSC
1–525
625/PAL
1–625
SECAM
1–625
The following HDTV and custom standards become available with installation of
a DPO4VID application module:
Video Sta
ndard
Line Numb
er Range
480 1–525
576 1–625
720 1–750
875 1–875
1080 1–1125
Bilevel Cus tom
4–3000
Trilevel Custom
4–300
0
Examples
TRIGGER:A:VIDEO:LINE 23 sets the oscilloscope to trigger on the line 23.
TRIGGER:A:VIDEO:LINE ? might return :TRIGger:A:VIDeo:LINE 10
indicating that the oscilloscope is set to trigger on line 10.
TRIGger:A:VIDeo:POLarity
This command sets the polar
ity to use for triggering on video signals.
Conditions
This command requires a DPO4VID application modul
e to use any standard
besides NTSc, PAL, or SECAM, except for MDO3000 models, which do not
require an application module.
Group
Trigger
Syntax
TRIGger:A:VIDeo:POLarity {NEGative|POSitive}
TRIGger:A:VIDeo:POLarity?
2-916 MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual