User's Manual

Additional measuring functions
63
7.2.4 Recording a noise directly (in Professional mode only)
The “Direct recording” function of a Log N-3 logger enables you to listen in on the
current noise in a pipe without using additional equipment (sensor rod microphone or
similar).
If “Direct recording” is performed with a logger already installed, you do not even have to
open the shaft to listen to the pipe.
With this function, the logger creates a three-second recording of the current noise in
the pipe. This audio file is then immediately sent to the Commander where it can be
replayed. The pipe noise can thus be tracked almost in real time.
You can perform “Direct recording” with any logger already installed, if it is programmed
in “Lift&Shift” or “Patrol” group mode and if it is within its programmed “Wireless on”
time. (Unfortunately, the system will not allow loggers in “Network” group mode to be
used for this.)
However, you can also use a logger that has not been installed yet. The logger does not
have to be programmed after being switched on. It can simply remain in configuration
mode instead (see page 14).
To record a noise directly, a logger must be switched on, installed on the pipe and
located within the wireless range of the Commander. The distance is preferably between
1 and 10 m.
Proceed as follows to record the pipe noise directly:
Step Description
1
Select the symbol in the main menu and the Direct recording button
in the next view.
Result: The loggers in the workgroup are listed in the next view.
2
If necessary, you can call up another logger group using the drop-down list at
the very top of the screen.
3
Select the table and then the logger for recording the current noise.
4 Apply the Start recording button.
Result: The ID and comment of the logger to perform the recording are shown
once again in the next view. The Commander and the logger are connected.
The noise recording and following transfer of the audio file to the Commander
take place automatically. A bar shows the progress.
After the data has been transferred successfully, the menu for playing back
audio files opens automatically on the Commander’s screen (see page 61).
Introduction
Requirements
Procedure