4.1
Structure
The picture shows the display and operating area of the device.
Display
One can find the following information on the screen:
headphone OFF
frequency filter
being used
The currently measured volume level is displayed as a dimensionless numerical value lying be-
tween 1 - 99.
The bar shown also reflects the current volume level. The arrow below the bar marks the last
measured value stored.
I/O button
pressing on it for a longer period of time = switches the device On / Off
pressing on it for a shorter period of time = starts/ stops the current measurement procedure; the
headphones are switched to activated / muted at the same time
Filter button
Selection of a frequency setting in 3 stages (LOW / HIGH / ALL)
4.2
Feeler rod
The tracing tip can be detached from the device. You can unscrew it (a right-hand thread) if
necessary and exchange it for another measuring head or mount the extension bar provided.
ENGLISH
current volume level
13