Agilent Technologies Infiniium 90000 Q-Series, Programmer'S Manual

Page: 587 / 1186

Measure Commands
25
Agilent Infiniium 90000 Series Oscilloscopes Programmer's Reference 587
:MEASure:NOISe:RN
Command
:MEASure:NOISe:RN {ON, <RNrms Zero>, <RNrms One> | OFF}
The :MEASure:NOISe:RN command can specify a known amount of random
noise. When used, the remaining amount of the total noise measured is
reported as periodic interference (PI).
This command is used in situations when crosstalk aggressors influence
the random noise measured on a signal. If the random noise on a signal is
measured without the aggressor signal crosstalk, this known amount of
random noise can be specified when measuring the noise again with the
crosstalk aggressors.
• ON — Enables a specified amount of random noise.
• <RNrms Zero> — The known amount of "zeros" random noise.
• <RNrms One> — The known amount of "ones" random noise.
• OFF — Disables the specification of random noise amounts.
Specified amounts of "ones" and "zeros" random noise is shown in the
noise measurement results (see
page 581 ) as "RN(rms specified)".
Example
This example specifies 100
μ
V of known "zeros" random noise and 200
μ
V
of known "ones" random noise.
myScope.WriteString ":MEAS:NOISE:RN ON, 100e-6, 200e-6"
Query
:MEASure:NOISe:RN?
The :MEASure:NOISe:RN? query returns the specified RN settings.
Returned Format
[:MEASure:NOISe:RN] {ON, <RNrms Zero>, <RNrms One> | OFF}<NL>
Example
This example places the specified RN settings in the
strKnownRandomNoise variable and displays it on the computer's screen.
myScope.WriteString ":SYSTem:HEADer OFF" ' Response headers off.
myScope.WriteString ":MEASure:NOISe:RN?"
strKnownRandomNoise = myScope.ReadString
Debug.Print strKnownRandomNoise
N O T E
This command is only available when the EZJIT Complete software is installed.