Rion NA-42, Инструкция по эксплуатации

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22
Preparations
Note
When the 0.1 dB readout resolution has been chosen
with menu 3, the sensitivity setting range extends
to fi rst decimal place. When the 0.01 dB readout
resolution has been chosen, the sensitivity setting
range extends to second decimal place.
If the sensitivity has been set with second decimal
place and the readout resolution is then switched
back to 0.1 dB, the second decimal place sensitivity
setting still remains active until changed.
4. Press the SENS key on the front panel to return to the measurement
screen.
5. Set the level range according to the sensitivity setting, as shown in
the table below.
* The preamplifi er gain setting of 20 dB is available only when the
UC-34P (UC-34, NH-34) is connected.
6. Press the CAL key to activate the calibration mode. Measurement
parameters are automatically set to C weighting and FAST.
0 dB / 20 dB
0 dB
20 dB *
-19.99 to -10.00 60 70 80 100 110 120 130
-29.99 to -20.00 70 80 90 110 120 130 140
-39.99 to -30.00 80 90
100
120 130
140
150
-49.99 to -40.00
90 100 110 130 140 150 160
-59.99 to -50.00
100 110 120 140 150 160 170
-69.99 to -60.00 110 120 130 150 160 170 180
-19.99 to -10.00
40 50 60 80 90 100
-29.99 to -20.00 50 60 70 90 100 110
90
100
110
120
130
140
70
80
Conditions
sensitivity (dB)
Microphone
Level range (dB)
Preamplifier gain
When the preamplifier power supply voltage is set
to ±45 V, only the underlined settings are available
and the LEVEL RANGE keys are disabled.
When the preamplifier power supply voltage
is set to ±12 V, choose this level range.