Threshold level
The threshold value (Level) can be set with
1 dB steps in the range from 24 dB to 136 dB
in sound mode and from 1 mm/s
2
(60 dB) to
10 km/s
2
(200 dB) in vibration mode.
Pre and post trigger logging
In the Pre Trigger position, you can define the number of logger results which will be registered in the file before
fulfilment of the first trigger condition. This number can be set in the range 0..50.
In the Post Trigger position, you can define the number of logger results which will be registered in the file after
fulfilment of the last trigger condition. This number can be set in the range 0..200.
Periods of logging the logger results before
and after fulfilment of the trigger condition can
be calculated by multiplying the value set up
in the Pre or Post positions by the value set
up in the Logger Step position (path: <Menu>
/ Measurement / Logging / Logger Setup). The
result of this calculation is presented in the
same line for the Pre and Post parameters in
the format 0m00s.
These parameters can perform double role. Firstly, when you wish to collect data right after or before the event
that caused logger trigger. Secondly, when it is necessary to have continuous logging, but the source is
oscillating near the threshold level. The extension of the registration window allows you to avoid the effect of
pulsation.
4.4.5 Setting markers – Marker Setup
Marker is used to mark (or highlight) special events during the measurement such as "airplane flight" and is
nothing but an indication of the beginning and end of the block of logger results in which the event occurred. In
case of point markers, there is no start and end of the marker, but only one record in the logger file. Markers are
activated in the result presentation views by pressing the arrow keys.
The Marker Setup screen allows you to
assign a specific name for each marker, select
its type (normal or Point) and define markers
for triggering wave recording (Trig column).
Name edition is performed in the text editor
screen after pressing the â–º key together with
<Alt>.
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