Svantek SV 977D User Manual

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SV 977D User Manual
Note: When a signal recording is waiting for the level trigger the
“level” icon appears alternatively with the „wave” icon.
or
External trigger
When External is selected, recording starts from the external signal on the I/O
socket. In this case, it is necessary to set up the I/O Mode parameter as
Digital In (path: <Menu> / Instrument / Multifunction I/O).
After triggering, recording will last Recording Time (unless the measurement
is stopped earlier) and if during this time new external trigger appears the
instrument will prolong recording for another Recording Time.
Integr. Period trigger
When the Integr. Period trigger is selected, recording is triggering every time
the measurement starts and lasts Recording Time (unless the measurement
is stopped earlier). If the triggering condition appears during recording (when
Integration Period is shorter than Recording Time) from this moment the
recording will continue for another Recording Time and so on.
Int. Period Split trigger
When the Int. Period Split trigger is selected, recording is triggering every time
the measurement starts and ending after the Integration Period time, e.g. the
recording time is equal to the Integration Period time. In this case the
instrument creates a WAV file for every measurement cycle.
Note: When a signal recording is waiting for the External,
Integration Period or Integration Period Split trigger the “trigger”
icon appears alternatively with the „wave” icon.
Source result
Only one measured result can be used as a trigger source (Source) for checking the trigger condition in the
Level Meter mode, namely the instantaneous RMS from the first profile (with appropriate filter and detector),
which is denoted here as Leq(1) in the sound mode and RMS(1) in the vibration mode. This position cannot be
changed.
This result averaged for the Trigger Period is compared with the Level value with the step defined by the
Trigger Period.
Threshold level
The threshold (Level) can be set with 1 dB
steps in the range from 24 dB to 136 dB in the
sound mode and from 1 mm/s
2
(60 dB) to
10 km/s
2
(200 dB) in the vibration mode.
Checking the trigger condition
The Trigger Period parameter defines the time interval of checking the trigger
conditions. This parameter can be set as: Log. Step (same as Logger Step
value), 0.5ms, 100.0ms and 1s.
The Recording Time parameter defines the time of signal recording after every
trigger. The available values can be selected from 1s to 8h or Inf (recording will
last until measurement stop).

Svantek SV 977D Specifications

General

Brand	Svantek
Model	SV 977D
Category	Measuring Instruments
Language	English