MDO3000 Programmer Manual.pdf - 第933页

Commands Listed in Alphabetical Order TRIGGER:A:SET HOLD:DATA:THRESH OLD? might re turn :TRIGGER:A:SE THOLD:DATA:THRES HOLD 1.2000E +00 indicating that 1.2 V is the c urrent data voltage level for the s etup and h old tr…

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Commands Listed in Alphabetical Order
TRIGger:A:SET
Hold:DATa:SOUrce?
Related Commands
TRIGger:A:SETHold:CLOCk:SOUrce
Arguments
CH1–CH4 specifies an analog input channel as the data source for the setup and
hold trigger.
D0–D15 specifies a digital channel as the source. (MSO/MDO4000/B models
only as well as MDO3000 and MDO400C models with option MDO3MSO or
MDO4MSO installed.)
AUX specifies an external trigger using the Aux In connector located on the front
panel of the oscilloscope. (For MSO/DPO 4000B series models, MDO4000C
series models without an RF option, and 2-channel MDO3000 models only.)
Examples
TRIGGER:A:SETHOLD:DATA:SOURCE CH1 sets channel 1 as the data source
for the setup and hold trigger.
TRIGGER:A:SETHOLD:DATA:SOURCE CH1,D0,D15 specifies Ch1, D0 and D15
as three data sources for the setup/hold trigger.
TRIGGER:A:SETHOLD:DATA:SOURCE? might return
:TRIGGER:A:LOGIC:SETHOLD:DATA:SOURCE CH1,D0,D15 indicating that
channel 1, digital channel 0, and digital channel 15 are the current data sources for
the setup and hold trigger.
TRIGger:A:SETHold:DATa:THReshold
This command specifies the data voltage threshold for setup and hold trigger.
Group
Trigger
Syntax
TRIGger:A:SETHold:DATa:THReshold {<NR3>|TTL}
TRIGger:A:SETHold:DATa:THReshold?
Arguments
TTL specifies the preset TTL high level of 1.4 V.
<NR3> is a floating point number that specifies the setup and hold data level,
in volts.
Examples
TRIGGER:A:SETHOLD:DATA:THRESHOLD TTL specifies the preset high level of
1.4 V as the current data voltage level for the setup and hold trigger.
2-902 MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual
Commands Listed in Alphabetical Order
TRIGGER:A:SET
HOLD:DATA:THRESHOLD?
might return
:TRIGGER:A:SETHOLD:DATA:THRESHOLD 1.2000E+00 indicating
that 1.2 V is the current data voltage level for the setup and hold trigger.
TRIGger:A:S
ETHold:HOLDTime
This command specifies the hold time for setup and hold violation triggering.
Group
Trigger
Syntax
TRIGger:A:SETHold:HOLDTime <NR3>
TRIGger:A:SETHold:HOLDTime?
Arguments
<NR3> is a floating point number that specifies the hold time setting, in seconds.
Positive values for hold time occur after the clock edge. Negative values oc
cur
before the clock edge.
Examples
TRIGGER:A:SETHOLD:HOLDTIME 3.0E-3 sets the hold time for the setup and
hold trigger to 3 ms.
TRIGGER:A:SETHOLD:HOLDTIME? might return
:TRIGGER:A:SETHOLD:HOLDTIME 2.0000E-09 indicating that the current
hold time for the setup and hold trigger is 2 ns.
TRIGger:A:SETHold:SETTime
This command specifies the setup time for setup and hold violation triggering.
Group
Trigger
Syntax
TRIGger:A:SETHold:SETTime <NR3>
TRIGger:A:SETHold:SETTime?
Arguments
<NR3> is a floating point number that specifies the setup time for setup and hold
viol
ation triggering.
Examples
TRIGGER:A:SETHOLD:SETTIME 3.0E-6 specifies that the current setup time for
setup and hold trigger is 3 µs.
MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual 2-903
Commands Listed in Alphabetical Order
TRIGGER:A:SET
HOLD:SETTIME?
might return
:TRIGGER:A:LOGIC:SETHOLD:SETTIME 2.0000E-09 indicating that the
current setup time for setup and hold trigger is 2 ns.
TRIGger:A:S
ETHold:THReshold:CH<x>
This command specifies the threshold for the analog channel <x>. x can be 1–4.
All trigger types using the channel are affected.
Group
Trigger
Syntax
TRIGger:A:SETHold:THReshold:CH<x> {<NR3>|ECL|TTL}
TRIGger:A:SETHold:THReshold:CH<x>?
Arguments
<NR3> is a floating point number that specifies the threshold voltage, in volts.
ECL specifies a preset ECL high level of –1.3V.
TTL specifies a preset TTL high level of 1.4V.
Examples
TRIGGER:A:SETHOLD:THRESHOLD:CH1 1.5 sets the channel 1 threshold
to 1.5 volts.
TRIGGER:A:SETHOLD:THRESHOLD:CH1? might return
TRIGGER:A:SETHOLD:THRESHOLD:CH1 0.0E+0 indicating the
channel 1 threshold is set to 0.0 volts.
TRIGger:A:SETHold:THReshold:D<x>
This command sets the threshold for the specified digital channel. <x> can beD0
- D15. All trigger types using the digital channel are affected.
NOTE. MDO3000 models only have two digital threshold controls: o ne for d igital
channels D0 - D7, and the other for D8 - D15. Digital channel trigger l
evels
cannot be set independently for these models. Changing one digital channel’s
threshold level changes all of the channels’ levels in the same set.
Group
Trigger
Syntax
TRIGger:A:SETHold:THReshold:D<x> {<NR3>|ECL|TTL}
TRIGger:A:SETHold:THReshold:D<x>?
2-904 MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual