SOUND LEVEL METER
2
III. SPECIFICATIONS
Standard applied : IEC651 Type2, ANSI S1.4 Type2.
Frequency range : 31.5Hz ~ 8KHz
Measuring level range : 30 ~ 130dB
Frequency weighting : A / C
Microphone : 1/2 inch electret condenser microphone
Display : LCD
Digital display : 4 digits
Resolution: 0.1dB
Display Update: 0.5 sec.
Analog display : 50 segment bargraph
Resolution : 1dB
Display Update : 100 mS
Time weighting : FAST ( 125mS ), SLOW ( 1 sec. )
Level ranges : Lo : 30 – 80 dB
Med : 50 – 100 dB
Hi
: 80 – 130 dB
Auto : 30 – 130 dB
Accuracy : ±1.5dB ( under reference conditions @ 94dB, 1KHz )
Dynamic range : 50 dB
Alarm function : “OVER” is when input is more than upper limit of range.
“ UNDER ” is when input is Less than lower limit of range.
MAX/MIN hold : Hold readings the Maximum and Minimum Value.
AC output : 1 Vrms at FS ( full scale ).
Output impedance : Approx. 100Ω
FS: means the upper limit of each level range.
DC output : 10mV / dB , output impedance approx. 1KΩ
Power supply : One 9V battery, 006P or IEC 6F22 or NEDA 1604.
Power life : About 50hrs ( alkaline battery )
AC adapter : Voltage 9 VDC ( 8-15VDC Max )
Supply current : > 30mADC Socket : pin → Ground
Casing → Positive External Diameter → 3.5mm
Internal Diameter → 1.35mm
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