Figure 2-6: The Audio Spectrum Menu Tree - Tektronix VM700T User Manual

VM700T Option 40/41/42 Audio Measurements User Manual
This display plots frequency on the x-axis and signal level in dBu on the y-axis.
You can configure the audio input signal level with the
key (see the Set Input Range explanation on page 2–12 for more information).
Figure 2–6 shows the menu tree for the Audio Spectrum measurement functions.
Audio
Spectrum
Average Special
Num n Setup
Touch Softkey,
then turn knob
to set n
Cursor 1
On
Filter
Set Input
Selection
Range
CCIR
468.4
a Right
Left
Range: [A–E] Range: [A–E]
a
Digitizing window choices are displayed under Set Input Range with a choice of five windows as
follows:
The VM 700T will digitize audio in a 92 dB window
within a total input range of 132 dB.
There are five input range windows:
range A: –62 to +30 dBu
range B: –72 to +20 dBu
range C: –82 to +10 dBu
range D: –92 to 0 dBu
range E: –102 to –10 dBu
Figure 2–6: The Audio Spectrum menu tree
Change
Cursors
Channel
Cursor 2 Cursor 1
On Active
C
A–
Message
Weighting
Harmonics
Set Input
Range of 60 Hz
AUTO
a
Range
Operating Basics
View
High Res:
Harmonics
OFF/ON
Touch Softkey,
Cursor 2
then turn knob
Active
to move cursor
Nearest
Peak
Harmonics Har. of:
of 50 Hz nn Hz Spectrum
View Spectrum and
View Harmonics
toggles between the
two display types.
soft
Rescale
View
2–9