SVAN 948 USER MANUAL
4 - 33
In the case when the
SLOPE +
is selected, the measurement starts when the arising signal will
pass the level determined in the
LEVEL
. The measurement is stopped when the conditions set in the
MEASURE SETUP
sub-list are fulfilled, after pressing the
<START / STOP>
push-button or after
receiving remotely the proper control code.
In the case when the
SLOPE -
is selected, the measurement starts when the falling down signal will
pass the level determined in the
LEVEL
.
Notice:
In
VLM
mode only one available, so-called “triggering signal” is the signal coming
from the
RMS
detector of the first channel.
The view of the displays in the TRIGGER SETUP sub-list
(path: MENU / INPUT / TRIGGER SETUP)
with the
LEVEL modes selected
In the case when the
LEVEL +
is selected, in each second of the measurement the triggering
condition is checked; the measurement is registered only when the signal has the greater level then this
determined in the
LEVEL
and in the other case the measurement result is skipped.
In the case when the
LEVEL -
is selected, in each second of the measurement the triggering
condition is checked; the measurement is registered only when the signal has the lower level then this
determined in the
LEVEL
and in the other case the measurement result is skipped.
The view of the displays in the TRIGGER SETUP sub-list
(path: MENU / INPUT / TRIGGER SETUP)
with the
BUFFER mode selected
After the selection of the
BUFFER
mode the
PRE/POST
text appears on the display. This mode of
triggering influences the way the measurement results are registered in the buffer, namely: if the triggering
signal is greater then the selected
LEVEL
, the following results are saved in the buffer:
•
registered directly before the fulfilment of the triggering condition; time of the registration can be
calculated by multiplying the value set in the
PRE TRIGGER
by the step taken from the
BUFFER STEP
(the
MEASURE SETUP
sub-list);
•
all measurement results up to the moment the triggering signal falls down the
LEVEL
;
•
the results registered directly after the fulfilment of the triggering condition; time of the registration can
be calculated by multiplying the value set in the
POST TRIGGER
by the step taken from the
BUFFER STEP
.
Selection of the triggering signal in SLM - SOURCE
It is assumed that in the sound level meter mode there are three triggering signal available:
VECT,
VEC/SND, MAX
.
Summary of Contents for SVAN 948
Page 1: ...SVAN 948 SOUND AND VIBRATION DATA LOGGER USER S MANUAL SVANTEK Sp z o o WARSAW June 2004...
Page 19: ...SVAN 948 USER MANUAL 2 6 The view of the rear panel of the SVAN 948 instrument in 1 1 scale...
Page 25: ...SVAN 948 USER MANUAL 3 6 Control diagram of the INPUT list...
Page 28: ...SVAN 948 USER MANUAL 3 9 Control diagram of the DISPLAY list...
Page 30: ...SVAN 948 USER MANUAL 3 11 Control diagram of the FILE list...
Page 32: ...SVAN 948 USER MANUAL 3 13 Control diagram of the AUX FUNCTION list...
Page 36: ...SVAN 948 USER MANUAL 3 17...
Page 37: ...SVAN 948 USER MANUAL 3 18 Control diagram of the SETUP list...
