Agilent Technologies 8614 B Series User Manual page 85

The auto measure function uses trace A to perform the measurement. Since the auto measure
function can alter the instrument state, we recommend that this operation be performed before a
measurement sequence is started.
Auto Measure Setup panel allows you to modify the auto measure span and the vertical scale,
tune to the wavelength indicated by the marker, and optimize the sensitivity.
Span selects the wavelength span for viewing the signal located by the auto measure function. If
auto is specified, the span is set wide enough to display most of the signal. If a particular span is
desired, deselect auto and put the desired span in the nm dialog box. The default selection for
span is auto.
N o t e If the span is set too narrow, the auto measure operation may not complete successfully. If this
happens a warning message is displayed.
Scale/Div selection sets the vertical scale to be used after performing the auto measure function.
If auto is specified, the measurement function sets the vertical scale to a value based on the
dynamic range of the signal. If a particular vertical scale is desired, deselect auto and put the
desired dB/div in the dB dialog box. The default selection for dB/div is auto.
AutoMeas at Marker turns the auto measure marker on or off. Selecting the on state for auto
measure at marker causes the auto measure function to perform its operation at the wavelength
of the active marker. This allows you to measure a signal other than the largest one found in a full
span sweep. The default selection for auto measure at marker is off.
Optimize Sensitivity, when turned on, causes the auto measure function to set the sensitivity so
the resulting measurement has a minimal amount of noise. It does this by finding the minimum in
the measurement trace and comparing this value to the known sensitivity of the instrument at
that wavelength. Sensitivity is then reduced until the signal is close to this minimum sensitivity or
the sweep time becomes too long. The Optimize Sensitivity function is useful when viewing high
dynamic range signals. The drawback to turning this function
longer sweep time to get better sensitivity. The default selection for Optimize Sensitivity is
N o t e None of the Automeasure Setup parameters are affected by the front-panel Preset key. They are
not saved as part of the measurement setup.
Key Path
Related Functions
Remote Commands
Auto Meas
Auto Align
DISPlay[:WINDow[1]]:TRACe:ALL[:SCALe][:AUTO]
DISPlay[:WINDow[1]]:TRACe:X{:SCALe]:AUTO:SPAN
DISPlay[:WINDow[1]]:TRACe:Y{:SCALe]:AUTO:PDIVision
DISPlay[:WINDow[1]]:TRACe:ALL[:SCALe][:AUTO]:MARKer OFF|ON|0|1
Function Reference
Auto Meas
is that it generally requires a
ON
.
OFF
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