Audio Spectrum Main Menu - Tektronix VM700T User Manual

Operating Basics
2–10

Audio Spectrum Main Menu

Average Num
averaging. The Average Num range is 1–256; the default value
is 10. To change the Average Num value, touch the
soft key to highlight it, rotate the knob until the selected
time constant appears, then press the
again.
Special Setup
Change
Channel
right input channels. To change the displayed input channel,
touch the
the soft key for the desired display channel. After selecting the
input channel, you may press the Menu button twice to
redisplay the Audio Spectrum measurement soft keys.
NOTE. The VM700T can display distorted or incorrect signal information if the
input range window is not matched to the input signal. When the input range
window and the input signal are not matched, the VM700T clips the input signal
to the range of the window and displays the clipped signal.
Cursors
them to mark display features. The numerical display shows the
peak-to-peak signal level at each cursor's frequency location,
and the level difference between them. When both cursors are
turned on, the numerical display also shows the noise area
between the cursors. The cursor submenu permits positioning
and selection of the cursors.
High Res:
OFF/ON
resolution mode is off (the default), the VM700T displays
24 kHz of the selected channel's audio spectrum. When high
resolution mode is on, the VM700T displays a 3 kHz window
of the 24 kHz display (see Figure 2–7). The position of the
window in the 24 kHz spectrum can be adjusted by rotating the
control knob.
NOTE. Filter selection is not available in High Res mode.
VM700T Option 40/41/42 Audio Measurements User Manual
specifies the time constant to be used for
accesses the two measurement setup soft keys:
and
switches the display between the left and
soft key to highlight it, then touch
places two cursors on the display and lets you position
selects view resolution. When high
soft key
.