Tektronix MSO54, Руководство программиста

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Commands listed in alphabetical order
interpolated midpoint of the recovered unit interval. This measurement is made
on each non-transition bit in the record.
TOP
is the most common data value above the midpoint of the waveform. This
measurement can be made across the entire record, or on each cycle in the record.
UNITINTERVAL
(Unit Interval) is the time difference between two successive bits.
This measurement is made on each bit in the record.
VDIFFXOVR
(Differential Crossover) is the voltage level of a differential signal
pair at the crossover points. This measurement is made at each crossover point
in the record.
WIDTH
(Eye Width) is the minimum horizontal eye opening at the user speci fi ed
reference level. This measurement is made across the entire record.
WIDTHBER
(Eye Width@BER) is the predicted horizontal eye opening that will
be violated with a probability equal to the bit error rate. This measurement is
made across the entire record.
Examples
MEASUREMENT:MEAS2:TYPE FREQUENCY
de fi nes measurement 2 as a
measurement of the frequency of a waveform.
MEASUREMENT:MEAS1:TYPE?
might return
:MEASUREMENT:MEAS1:TYPE RMS
,
indicating that measurement 1 is de fi ned to measure the RMS value of a waveform.
MEASUrement:MEAS<x>:WINDOWLENgth
This command sets or queries the window length for the measurement. The
measurement number is speci
fi ed by x.
Group Measurement
Syntax
MEASUrement:MEAS<x>:WINDOWLENgth <NR3>
MEASUrement:MEAS<x>:WINDOWLENgth?
Arguments
<NR3>
is the value for the window length.
Examples
MEASUrement:MEAS1:WINDOWLENgth 10
sets the window length to 10.
MEASUrement:MEAS1:WINDOWLENgth?
might return
:MEASUREMENT:MEAS1:WINDOWLENGTH 10.0000
indicating the
window length is 10.
2-494 MSO54, MSO56, MSO58, MSO58LP Programmer