b) To exit the memory record function, just press the
" REC " button > 2 seconds at least. The display will
revert to the current reading.
4-7 LCD Backlight ON/OFF
After power ON, the " LCD Backlight " will light
automatically. During the measurement, press the
" POWER Button " ( 3-2, Fig. 1 ) once will turn off the
" LCD Backlight ".
Press the " POWER Button " once again will turn ON the
" LCD Backlight " again.
4-8 Time check
During the measurement, press the
" Time Button " ( 3-5, Fig. 1 ) once display will show
Year/Month/Date, Hour/Minute/Second and sampling time
information.
4-9 4-20 mA output
Connect another mA meter into the SOUND LEVER DATA
RECORDER ( 3-18 Fig1 4-20 mA Output Terminal) socket ,the
recorder will be output 4-20 mA analog signal .
Note : Accuracy : ± (0.5 % + 0.05mA)( 23 ± 5
℃
)
at 30 - 80 dB range (
≦
30 dB = 4.00 mA out ,
≧
80 dB = 20.00 mA out )
at 50 - 100 dB range (
≦
50 dB = 4.00 mA out ,
≧
100 dB = 20.00 mA out )
at 80 - 130 dB range (
≦
80 dB = 4.00 mA out ,
≧
130 dB = 20.00 mA out )
at Auto range (
≦
30 dB = 4.00 mA out ,
≧
130 dB = 20.00 mA out )
Remark:
*
When power use AC to DC adapter, the 4-20 mA will output.
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