Technical data

638 Agilent Infiniium 90000 Series Oscilloscopes Programmer's Reference
24 Measure Commands
:MEASure:VTOP
Command :MEASure:VTOP [<source>]
The :MEASure:VTOP command measures the statistical top of the selected
source waveform. Sources are specified with the :MEASure:SOURce
command or with the optional parameter following the :MEASure:VTOP
command.
<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 voltage at the top of the waveform.
myScope.WriteString ":MEASURE:VTOP CHANNEL1"
Query :MEASure:VTOP? [<source>]
The :MEASure:VTOP? query returns the measured voltage at the top of the
specified source.
Returned Format
[:MEASure:VTOP] <value>[,<result_state>]<NL>
<value> Voltage at the top of the waveform.
<result_state> If SENDvalid is ON, the result state is returned with the measurement
result. See the :MEASure:RESults table in this chapter for a list of the
result states.
Example This example places the value of the voltage at the top of the waveform in
the numeric variable, varValue, then prints the contents of the variable to
the computer's screen.
myScope.WriteString ":SYSTEM:HEADER OFF" ' Response headers off.
myScope.WriteString ":MEASURE:VTOP? CHANNEL1"
varValue = myScope.ReadNumber
Debug.Print FormatNumber(varValue, 0)