Multitone Analyzer Main Menu - Tektronix VM700T User Manual

VM700T Option 40/41/42 Audio Measurements User Manual

Multitone Analyzer Main Menu

Change
View
change the display to view input signal levels (the default
mode), view differences between left and right inputs, and view
left or right channel distortion and noise components of the
signal (see Figure 2–14).
Set Input
Range
most closely matches the amplitude range of the input signal.
The VM700T digitizes an audio signal measured in a selectable
92 dB window over a total range of 132 dB.
The input ranges of the left and right channels may be
configured independently with the
the best range for the applied signal level.
NOTE. Use care when selecting AUTO for setting the input range. If varying
signals, such as voice, are applied to the Audio option, the attenuators
constantly switch ranges as they attempt to select an appropriate measurement
window for a constantly varying input signal.
Set Ref
Level
two soft key selections:
frequency listed.
rotating the knob. The soft key legend displays the level you
set.
Limits:
ON/OFF
limits. The limits are set in the configuration files during setup
of the VM700T Option 40 for operation.
NOTE. When you disable the audio signal input limits, the audio input signal is
not checked against the limits they may have been selected during configuration.
Rescale Rescale readjusts the vertical scale to make all of the plot
visible on the display.
displays four soft key selections that let you
enables you to select the range window that
soft keys. In Auto, the range window is adjusted to find
selects the signal reference level menu with
shows the signal level at the reference
lets you set the reference level, in dBu, by
enables or disables the Multitone signal input
Operating Basics
or
(the default) and
2–25