67
Preparations
Sensitivity setting
This setting determines the correlation between input signal voltage and
signal units. How the values are to be set for each signal unit is explained
below.
mV/(m/s
2
)
Set the voltage sensitivity of the accelerometer.
Example: For PV-90I rated for 0.44 mV/(m/s
2
), the
setting should be “0.44”.
dB
Set the microphone sensitivity level (dB re. 1 V/Pa), or
level range (full-scale value) of sound level meter or
vibration level meter.
Microphone
Example: For UC-53A rated for -28 dB and used
together with NH-22, the transmission
loss is taken as -0.8 dB and the setting
should therefore be “-28.8”.
Sound level meter
Set to full-scale value of level range
Example: 80 dB
Vibration level meter
Set to full-scale value of level range
Example: 80 dB
EU
Set how many volts of the sensor signal voltage corre-
spond to one unit of the physical quantity.
Example: For a tachometer rated for 1 V/1000 rpm,
the setting should be “1.00E-03”.
Summary of Contents for DA-21
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