Pinpointing Cable Faults in “Digiphone” Mode
27
4.2.1.2
Adjusting the Measurement Settings
By pressing the knob, you can at any time switch from the
measurement screen
to the
menu screen
with the most important measurement settings:
In this menu you can perform the following measurement settings:
Menu
item Description
BNR
Activates/deactivates Background Noise Reduction (BNR).
Background noise reduction is used to make it easier to detect acoustic pulses
in environments with a lot of interference. Often it is not possible to distinguish
background noise caused by rain or traffic, for example, from the actual signal
and this makes acoustic pinpointing more difficult.
Activates/deactivates the volume limiter.
If this function is activated, the volume is limited to a maximum of 84 dB(A).
When the volume limiter is being used, acoustic amplification should
not be set too high!
Excessive amplification, requiring the automatic limiter to constantly
intervene, will attenuate the flashover noise. The background noise, on
the other hand, would become more dominant as it is also amplified.
Filter settings (see next page)
Summary of Contents for digiPHONE+2
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