SVAN 948 USER MANUAL
4 - 49
4.4.2. 1/1 OCTAVE analyser of vibration signal
In order to select the instrument’s acoustic mode the user has to enter the
CHANNELS SETUP
list
by pressing the
<MENU>
push-button, selecting by means of the
<
>
,
<
>
(or
<
>
,
<
>
) push-buttons
the
INPUT
text and pressing the
<ENTER>
, and then enter the
CHANNELS SETUP
the same way like in
previous and chose number of
CHANNEL
to configuration. In the
MODE
sub-list the user can select the
kind of input signal which has to be measured or analysed by the instrument. In the case of acoustic
signals the
VIBRATION METER
option should be selected Then by pressing
<
>
,
<
>
push-buttons
user has to change
VIBR.
mode and press the
<ENTER>
push-button, which closes the
MODE
sub-list.
The
MODE
sub-list is closed ignoring any changes made in it, after pressing in any time the
<ESC>
push-
button.
a)
b)
c)
The view of the displays in the CHANNEL x
(path: MENU / INPUT)
list
with the CHANNEL x text selected (a);
the SOUND METER mode selected (b) and the VIBR. METER mode selected (c)
In
1/1 OCTAVE
analysis the spectrum is available in parallel to the
VLM
operation. All 15 digital
pass-band filters (with the centre frequencies from 16 kHz down to 1 Hz; in base-two system) are working
in the real time with the
linear RMS detector
displayed in the
SPECTRUM
sub-list of the
1/3 OCTAVE SETUP
. In order to inform the user about the working mode of the instrument, in one profile
and
3 PROFILES
modes of result’s presentation the
doted line
are used for the indication that the
instrument
do not work in
the
VLM
mode. In the
VLM
mode the continuous lines are used.
The view of the displays in one profile and 3 PROFILES result’s presentation mode with the doted lines
indicating that the instrument do not work in the VLM mode
Note:
The
TOTAL
RMS result is measured with the
HP
weighting filter and takes no account
of the
VLM
profile settings. The
spectra are always linearly averaged
. Thus, the
TOTAL
value from
1/1 OCTAVE
analysis can differ from those obtained in the
VLM
profiles (if the
RMS INTEGRATION
is set
to
EXPONENTIAL
).
In order to change the mode of the measurement results presentation the user has to press the
<
>
or
<
>
push-buttons. The following modes are available:
One profile
,
3 PROFILES
,
SPECTRUM
and
PLOT
.
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...
