Technical data

Measure Commands 24
Agilent Infiniium 90000 Series Oscilloscopes Programmer's Reference 569
:MEASure:RISetime
Command :MEASure:RISetime [<source>]
The :MEASure:RISetime command measures the rise time of the first
displayed edge by measuring the time at the lower threshold of the rising
edge, measuring the time at the upper threshold of the rising edge, then
calculating the rise time with the following algorithm:
Rise time = time at upper threshold point - time at lower threshold point.
To make this measurement requires 4 or more sample points on the rising
edge of the waveform.
Sources are specified with the :MEASure:SOURce command or with the
optional parameter following the RISetime command. With standard
thresholds selected, the lower threshold is at the 10% point and the upper
threshold is at the 90% point on the rising edge.
<source> {CHANnel<N> | FUNCtion<N> | WMEMory<N> | CLOCk | MTRend |
MSPectrum | EQUalized}
MTRend and MSPectrum sources are only available if the oscilloscope has
the EZJIT option installed and the feature is enabled.
The CLOCk source is only available if the oscilloscope has the High Speed
Serial option installed and the feature is enabled.
The EQUalized source is only available if the oscilloscope has the High
Speed Serial option and the Serial Data Equalization option installed and
the features are enabled. This command uses the Feed- Forward Equalized
(FFE) signal as the source.
<N> CHANnel<N> is an integer, 1 - 4.
FUNCtion<N> and WMEMory<N> are:
An integer, 1 - 4, representing the selected function or waveform memory.
Example This example measures the rise time of the channel 1 waveform.
myScope.WriteString ":MEASURE:RISETIME CHANNEL1"
Query :MEASure:RISetime?[<source>]
The :MEASure:RISetime? query returns the rise time of the specified
source.
Returned Format
[:MEASure:RISetime] <value>[,<result_state>]<NL>
<value> Rise time in seconds.