Center 2250, Инструкция по эксплуатации, Страница: 5 / 16

3
SOUND LEVEL METER
Display : LCD
Digital display : 4 digits
Resolution: 0.1dB
Display Updata: 0.5 sec.
Time weighting : FAST ( 125mS ), SLOW ( 1 sec. )
Level ranges : Lo: 30 - 80 dB
Med: 50 - 100 dB
Hi: 80 – 130 dB
Accuracy :
±
1.5dB ( under reference conditions )
Dynamic range : 50 dB
Alarm function : “ OVER ” is show when input is more than
upper limit of range.
“ UNDER ” is show 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. 50
Ω
FS: means the upper limit of each level
range.
DC output : 10mV / dB , output impedance approx. 100
Ω
Power supply : One 9V battery, 006P or IEC 6F22 or NEDA
1604.
Power life : About 50hrs ( alkaline Battery )