Measure:noise - Agilent Technologies Infiniium 90000 Series Programmer's Manual

25
Measure Commands

:MEASure:NOISe

Command
This command is only available when the EZJIT Complete software is installed.
N O T E
:MEASure:NOISe <source>, {VOLT | UNITamp}, {ZERO | ONE | BOTH}
The :MEASure:NOISe command adds a Noise measurement to the
oscilloscope display.
The parameters specify the input source to be measured, the units (in
volts or unit amplitude), and whether "zeros", "ones", or both "zeros" and
"ones" should be measured.
This command is the equivalent of adding a noise measurement via
Measure > Data > Noise in the front panel user interface.
<source>
{CHANnel<N> | FUNCtion<F> | WMEMory<N> | EQUalized}
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>
In CHANnel<N> and WMEMory<N>, N is an integer, 1- 4, representing the
selected channel or waveform memory.
<F> FUNCtion<F> is an integer, 1- 16.
Example
This example adds a "ones" Noise measurement on channel 1, in volt units,
to the oscilloscope display. The measurement results appear in the
Measurements tab.
myScope.WriteString ":MEASure:NOISe CHANnel1,VOLT,ONE"
Query
:MEASure:NOISe? <source>, {VOLT | UNIT}, {ZERO | ONE | BOTH}
The :MEASure:NOISe? query returns the measured noise value.
Returned Format
[:MEAS:NOIS] <measured_value><NL>
<measured_valu
The measured "zeros", "ones", or both noise value in volts or unit
e> amplitude.
Example
This example places the measurement result in the varMeasuredNoise
variable.
myScope.WriteString ":SYSTem:HEADer OFF"
myScope.WriteString ":MEASure:NOISe? CHANnel1,VOLT,ONE"
varMeasuredNoise = myScope.ReadNumber
Debug.Print FormatNumber(varMeasuredNoise, 0)
580 Agilent Infiniium 90000 Series Oscilloscopes Programmer's Reference
' Response headers off.