Center 390, Инструкция по эксплуатации, Страница: 8 / 20

Sound Level Meter
6
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8 MAX/MIN
button:
Press button to enter the maximum and minimum recording mode.
Under this mode, the maximum value and minimum value will be stored and
automatically updated in the memory simultaneously.
Pressing the button will display the “ ” symbol and the Maximum
value on the display. Pressing button again will display the “ ”
symbol indicator and the Minimum value on the display.
Pressing button again will cause the maximum and minimum indicators
to blink together. Which means the meter is under maximum and minimum
recording mode. The value displays on the screen is the present value.
To exit the maximum and minimum mode, press and hold button down
until the “ ” symbol is disappears.
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9
Back light button:
Press it to turn on the LCD backlight, making it easier to read in dark
environment.
Press it again to turn OFF backlight. The backlight will turn itself off
automatically after 30 seconds.
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10
A/C button:
Sets frequency weighting to A or C.
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11
FAST/SLOW button:
Sets the time weighting to Fast or Slow.
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12
Microphone:
1/2 inch Electret Condenser microphone.
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13
CAL potentiometer:
Calibration control, for level calibration adjustment.
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14
Connection to a Computer:
The PC jack signal output is a 9600 bps N 8 1 serial interface. Using the
accessory RS-232/USB interface cable.