Pinpointing Cable Faults in “Digiphone” Mode
26
Menu
item Description
F1
|
F2
Using this menu item, the following functions can be assigned to the two
function keys of the indicator unit:
The device can be muted / unmuted by pressing the function key.
Each press of the function key switches between the available filter
settings (see page 27).
BNR
The Background Noise Reduction (see page 27) can be
activated/deactivated by pressing the function key.
By pressing the function key, the manual setting of the trigger
sensitivity
for electromagnetic pulses
can be activated/deactivated.
Since the electromagnetic triggering indicator is located on the left side
of the display, this function can only be assigned to function key
F1
.
By pressing the function key, the manual setting of the trigger
sensitivity
for acoustic pulses
can be activated/deactivated.
Since the acoustic triggering indicator is located on the right side of the
display, this function can only be assigned to function key
F2
.
Sets the display language.
Sets the measuring unit.
The time difference between the arrival of the magnetic pulse and the flashover
noise
−
i.e. the distance to the fault
−
can be shown either directly (in
milliseconds) or converted into a unit of length (metres or feet).
To convert time to distance a constant (mean) propagation speed is
taken as the basis. However, because the actual ground conditions and
hence the sound propagation speed vary greatly, the distances
calculated can also differ from the real values to various degrees. The
distances displayed can therefore only be considered as guides!
Restores the factory settings.
Summary of Contents for digiPHONE+2
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