Rion NL-42A, Инструкция по эксплуатации, Страница: 91 / 154

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Measurement
2. Press the MENU/ENTER key and select the frequency weighting
characteristic on the menu list screen. For normal sound level
measurements, select the “A” setting.
When Z is selected, the sound pressure level from 10 Hz to 20 kHz
is measured with fl at characteristics.
When C is selected, the sound pressure level from 31.5 Hz to 8 kHz
is measured with fl at characteristics.
The frequency weighting characteristic can be set even on the
measurement setting screen in the menu list screen.
To set the frequency weighting characteristics for the sub channel,
use the measurement setting screen in the menu list screen.
3. Select the time weighting characteristics on the menu list screen. For
normal sound level measurements, select the “F(Fast)” setting.
When performing measurements in compliance with IEC or another
standard, set the frequency weighting and time weighting characteristics
as required by that standard.
The time weighting characteristic can be set even on the measurement
setting screen in the menu list screen.
To set the time weighting characteristics for the sub channel, use the
measurement setting screen in the menu list screen.
4. Select [Display] on the menu list screen and set the upper and lower
limit of the bar graph. The upper and lower limit of the bar graph
can be set even on the measurement screen. If the “OUTPUT OVER”
indicators appear frequently, change the limit of bar graph setting.
5. The level indication shows the currently measured sound level (sound
pressure level). The reading is updated once every second.
The PAUSE/CONT key can be used to pause and resume the updating
of level indication. The bar graph indication will be updated also
during pause. In the pause condition, a pause symbol ( ) appears on
the display, and the indicator LED fl ashes blue.