Svantek Shawcity SVAN 977C, User Manual

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53 SVAN 977C User Manual
The Format parameter defines the format of
the wave file header: PCM or Extensible .
The Audio Sampling parameter defines the
sampling frequency of the wave recording:
12kHz , 24kHz or 48kHz .
►
The Bits Per Sample parameter defines the
number of bits recorded per sample: 16 or
24 .
The Filter parameter defines the weighting
filter during event signal recording: A , B , C ,
Z , U , AU or HP for the sound signal and HP
only for the vibration signal.
The Signal Gain parameter defines the gain of the recorded signal, when 16
bits per sample is selected: 0dB
…
40dB .
The File Name parameter defines the name
of the wave file.
You can edit this name in the editor screen,
which is opened with the
◄ / ► key.
►
Wave Trigger
When Trigger on Marker is switched on, a wave recording will start by initiation
of one of the markers. Markers for triggering are defined in the Markers Setup
screen.
The Trigger parameter defines additional wave recording trigger, which can be
disabled ( Off ) or enabled by selecting the trigger type: Slope + , Slope - ,
Level + , Level
–
, External , Integr. Period and Int. Period Split .
Slope trigger
The Slope+ / Slope- trigger starts a signal recording on condition: rising/falling
value of the measured result ( Source ) averaged over the Trigger Period
passes above/below the threshold value ( Level ).
After pressing the <Start> key the instrument checks the trigger condition with steps, defined by the
Trigger Period parameter, and if condition is met starts the signal recording. Recording will last
Recording Time (unless the measurement is stopped earlier), and during this time the instrument continues to
check the trigger condition with the Trigger Period step. If next trigger condition is met during Recording Time
(provided that Trigger Period is shorter than Recording Time ) the instrument triggers recording again, so it will
continue from this moment by additional Recording Time and so on. If during next recording time there are no
triggers, recording will be stopped after the last trigger plus Recording Time . Several WAV files can be created
during one measurement.