Galaxy Audio CHECK MATE CM-140 - Manual (Page 4)

III. Specifications
Standard Applied: IEC651 Type2, ANSI S1.4 Type2.
Frequency Range: 31.5Hz to 8KHz
Measuring Level Range: 32dB to 130dB
Frequency Weighting: A / C
Microphone: 1/2-inch electret condenser microphone
Display: LCD
Digital Display: 4 digit
Resolution: 0.1dB
Display Update: 0.5 sec.
Time Weighting: FAST (125mS), SLOW (1 sec.)
Level Ranges: Lo: 32 dB to 80 dB
Med: 50 dB to 100 dB
Hi: 80 dB to 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.
q Display with 0.1dB steps on a 4-digit LCD.
q Two equivalent weighted sound pressure levels, A and
C.
q AC signal output is available from standard 3.5mm
coaxial socket suitable for a frequency analyzer, level
recorder, FFT analyzer, graphic recorder, etc.
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CM-140 SPL METER