NTi Audio Acoustilyzer AL1 - Manual (Page 45)

44 45
X-Axis: Linear scale showing, from left to right, the start frequency, the
frequency range and the end frequency within 92 bins. Includes zooming
functionality.
Y-Axis: The scaling of the Y-axis can be adjusted manually.
• Select the displayed upper value of Y-axis and press the enter key.
• Use the up/down keys to scroll the displayed level along the Y-axis
and the left/right keys zoom in/out the Y-axis, e.g. to alter the display
resolution.
How to measure:
• Select the FFT function. The cursor
readout shows the maximum level
automatically.
• Select the cursor readout field and
confirm with enter. A frame flashes
around the readout data.
• Read out other values using the left or
right arrow keys.
Zoom in/out to cursor position
• Select the cursor readout field.
• Use the lower arrow key to zoom in up
to a 0.7 Hz frequency resolution and the
upper arrow key to zoom out.
• Move the X-axis with left/right key
press.
Zoom in/out with quick X-axis shifting
• Select the X-axis frequency range field
• The zoom in/out functionality refers to
the displayed center frequency.
• Use the left/right arrow key for quick left/
right shifting of the X-axis.