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SVANTEK 977W User Manual
5.4.4 Setting the logger trigger parameters
– Logger Trigger
The
Logger Trigger
parameters influence
the way the measurement results are saved
in the logger. It is a context sub-list in which:
the trigger can be switched off or its type
selected (
Trigger
), the source of the
triggering
signal
can
be
determined
(
Source
),
it’s level can be selected (
Level
),
as well as the number of the results saved in
the logger before the fulfilment of the
triggering condition (
Pre
) and the number of
the results saved in the logger after the
fulfilment of the triggering condition (
Post
)
defined.
<ENT>
Trigger disabling
The logger triggering of the measurements (
Trigger
) can be switched off using
the
◄ or ► push-button. The triggering is switched on if the
Level +
or
Level
–
mode is selected.
Level type trigger
If the triggering signal is greater than the selected in
Level +
or less than
Level -
, the logger contains:
the measurement results recorded directly before the fulfilment of the
triggering condition; time of the recording can be calculated by multiplying the
value set in the
Pre
position by the time period taken from the
Logger Step
(
path: <Menu> / Measurement / Logging / Logger Setup
);
all measurement results up to the moment the triggering signal falls below the
Level
;
the results recorded directly after the fulfilment of the triggering condition; time
of the recording can be calculated by multiplying the value set in the
Post
by
the period taken from the
Logger Step
(
path: <Menu> / Measurement /
Logging / Logger Setup
).
Note:
When logger is waiting for the level trigger the “trigger level”
icon appears alternatively with the „curve” icon.
or
Source of the triggering signal
When the
Level Meter
mode is chosen only one measured result can be used as a source of the triggering signal
in the logger, namely the output signal from the RMS detector coming from the first profile which is denoted here
as
Leq(1)
for the SLM Mode or
RMS(1)
for the VLM Mode. This position does not become active (it is shown
greyed out) and the text stated here remains unchanged. After pressing the
▼
push-button, the
Source
line is
skipped.
Level of the triggering signal
The level of the triggering signal for logging
(
Level
) can be set with 1 dB steps in the range
from 24 dB to 136 dB in sound modes and from
1mm/s
2
(60 dB) to 10 km/s
2
(200 dB) in vibration
modes.
The
Level
value of the triggering signal
for the logger refers to the instantaneous value of
