71
SVANTEK 977W User Manual
Digital output function of the I/O socket
The
Function
position enables the user to set the function of the digital output
of the
I/O
instrument’s socket. The socket can be used as the source of the
trigger pulse (
Trigger Pulse
) which starts the measurement in another “slave
instrument” linked to the “master instrument” or the alarm signal, which
appears there after fulfilling certain measurement conditions (
Alarm Pulse
).
Polarisation of the digital output signal
The
Polarisation
position enables the user to select which polarisation of the
signal (negative or positive) will be applied to the output trigger pulse.
Active level for the alarm pulse generation
The
Active Level
position enables the user to select which level of the signal
should be treated as a valid one (“negative” or “positive” logic):
Low
or
High
.
Source signal for the alarm pulse generation
The
Source
position enables the user to select the level of which
measurement result should be checked. If the measured result level is greater
than selected alarm level (
Alarm Level
), the instrument will generate alarm
signal on the
I/O
socket. The measurement results from the first profile:
Peak(1)
,
Spl(1)
,
Max(1)
or
Leq(1)
can be used for the purpose described
above.
Alarm source type
The
Source Type
position enables the user to select the type of alarm
source). Available types are:
Current
and
Periodic
.
In case of
Current
, the alarm pulse will be generated all time when the
instantaneous result of the function selected in the
Source
position (measured
with 1 second step) is over the
Alarm Level
value.
In case of
Periodic
, the alarm pulse will be generated all time when the result
of the function selected in the
Source
position and measured with the
integration period step, is over the
Alarm Level
value.
Alarm level
The
Alarm Level
position
enables the user to set the level of the result to be
monitored during the measurements. If the result is greater than the alarm
level, the instrument will generate the alarm signal in the selected logic. The
available levels are within the range [30.0 dB, 140 dB] in Sound mode and
[60.0 dB, 180 dB] in Vibration mode.
