MDO3000 Programmer Manual.pdf - 第475页

Commands Listed in Alphabetical Order Syntax MEASUrement:M ETHod {Aut o|H IStogram|MINMax } MEASUrement:M ETHod? Related Commands MEASUrement:REFLevel:PERCent:HIGH , MEASUrement:REFLevel:PERCent:LOW , MEASUrement:REFLeve…

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Commands Listed in Alphabetical Order
Unit string Description
"s" seconds
"unk" unknown
Examples
MEASUREMENT:MEAS1:UNITS? might return :MEASUREMENT:MEAS1:UNIts %
indicating units for measurement 1 are set to percent.
MEASUrement:MEAS<x>:VALue? (Query Only)
Returns a calculate value for the measurement specified by <x>, which ranges
from 1 through 8 (only 4 in MDO3000 models).
NOTE. This is the same value as displayed on-screen. If measurement statistics
are enabled, a new value is calculated with every waveform. In addition, this
value is updated approximately every 1/3 second. If you are acquiring a long
acquisition record, the oscilloscope may take longer to update.
Group
Measurement
Syntax
MEASUrement:MEAS<x>:VALue?
Related Commands
MEASUrement:MEAS<x>:UNIts?,
*ESR?,
ALLEv?
Examples
MEASUREMENT:MEAS1:VALUE? might return : MEASUREMENT:MEAS1:VALue
2.8740E-06
. If the measurement has an error or warning associated with it,
then an item is added to the error queue. The error can be checked for with the
*ESR? and ALLEv? commands.
MEASUrement:METHod
This command specifies the method used to calculate the 0% and 100% reference
level.
Group
Measurement
2-444 MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual
Commands Listed in Alphabetical Order
Syntax
MEASUrement:M
ETHod {Aut o|HIStogram|MINMax}
MEASUrement:METHod?
Related Commands
MEASUrement:REFLevel:PERCent:HIGH,
MEASUrement:REFLevel:PERCent:LOW,
MEASUrement:REFLevel:PERCent:MID<x>,
Arguments
Auto selects the best method for each data set.
HIStogram sets the high and low waveform levels statistically using a histogram
algorithm.
MINMax uses the highest and lowest values of the waveform record. This selection
is best for examining waveforms with no large, flat portions of a common value
,
such as sine waves and triangle waves.
Examples
MEASUREMENT:METHOD? might return :MEASUREMENT: METHOD MINMAX
indicating that the reference levels are set to MIN and MAX.
MEASUrement:REFLevel? (Query Only)
Returns the current reference level parameters.
Group
Measurement
Syntax
MEASUrement:REFLevel?
Examples
MEASUREMENT:REFLEVEL? might return these reference
level settings
:MEASUREMENT:REFLEVEL:METHOD
PERCENT;ABSOLUTE:HIGH 0.0000;LOW 0. 0000;MID1 0.0000 ;MID2
0.0000;:MEASUREMENT:REFLEVEL:PERCENT:HIGH 90.0000;LOW
10.0000;MID1 50.0000 ;MID2 50.0000
MEASUrement:REFLevel:ABSolute:HIGH
This command specifies the high reference level, and is the upper reference level
when MEASUrement:REFLevel:METHod is set to Absolute. This command
affects the results of rise and fall measurements.
MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual 2-445
Commands Listed in Alphabetical Order
NOTE. this comm
and affects the associated reference level parameter for all
MEASurements:IMMed and the four periodic measurements.
Group
Measurement
Syntax
MEASUrement:REFLevel:ABSolute:HIGH <NR3>
MEASUrement:REFLevel:ABSolute:HIGH?
Related Commands
MEASUrement:REFLevel:METHod,
MEASUrement:IMMed:TYPe,
MEASUrement:MEAS<x>:TYPe
Arguments
<NR3> is a floating point number that specifies the high reference level, in volts.
The default is 0.0 V.
Examples
MEASUREMENT:REFLEVEL:ABSOLUTE:HIGH 1.71 sets the high reference level
to 1.71 V.
MEASUREMENT:REFLEVEL:ABSOLUTE:HIGH? might return
:MEASUREMENT:REFLEVEL:ABSOLUTE:HIGH 1.7100E+00 indicating that the
absolute high reference level is set to 1.71 V.
MEASUrement:REFLevel:ABSolute:LOW
This command specifies the low reference level, and is the lower reference level
when MEASUrement:REFLevel:METHod is set to Absolute.
NOTE. this command affects the associated reference level parameter for all
MEASurements:IMMed and the four periodic measurements.
Group
Measurement
Syntax
MEASUrement:REFLevel:ABSolute:LOW <NR3>
MEASUrement:REFLevel:ABSolute:LOW?
Related Commands
MEASUrement:REFLevel:METHod,
MEASUrement:IMMed:TYPe,
MEASUrement:MEAS<x>:TYPe
2-446 MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual