38
Measurement
Level Range Setting
Setting procedure
Use the LEVEL RANGE keys to select an appropriate setting, where the
OVER or UNDER indication does not appear in normal operation.
If the input signal level is too high for the selected range, the indication OVER
appears. In this condition, correct measurement is not possible.
Available level range settings
The available level range settings depend on the preamplifi er gain, microphone
sensitivity, and preamplifi er power supply setting.
* The 20 dB setting for the preamplifi er gain is available only when
the UC-34P (UC-34, NH-34) is used.
0 dB
20 dB*
-19.99 to -10.00
60
70
80
90
100
110
120
130
-29.99 to -20.00
70
80
90
100
110
120
130
140
-39.99 to -30.00
80
90
100
110
120
130
140
150
-49.99 to -40.00
90
100
110
120
130
140
150
160
-59.99 to -50.00
100
110
120
130
140
150
160
170
-69.99 to -60.00
110
120
130
140
150
160
170
180
-19.99 to -10.00
40
50
60
70
80
90
100
-29.99 to -20.00
50
60
70
80
90
100
110
Conditions
Preamplifier gain
0 dB/20 dB
Level range (dB)
Microphone
sensitivity
(dB)
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, these level
range settings are available.
Summary of Contents for NA-42
Page 2: ......
Page 10: ...viii...
Page 113: ...103 Technical Reference Main menu screen Measurement screen...
Page 122: ...No 32342 06 12 Printed in Japan...
