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2. SPECIFICATIONS
Circuit
Display
Measurement
Range
Resolution
Function
Accuracy
(23 ± 5
)
℃
Custom one-chip of microprocessor LSI
circuit.
LCD size : 52 mm x 38 mm
LCD with green backlight ( ON/OFF ).
30 - 130 dB.
0.1 dB.
dB ( A & C frequency weighting ),
Time weighting ( Fast, Slow ),
Peak hold, Data hold
Record ( Max., Min. ).
Characteristics of " A " frequency
weighting network meet IEC 61672
class 2.
Under 94 dB input signal, the accuracy
are :
31.5 Hz ± 3.5 dB
63 Hz ± 2.5 dB
125 Hz ± 2.0 dB
250 Hz ± 1.9 dB
500 Hz ± 1.9 dB
1 K Hz ± 1.4 dB
2 K Hz ± 2.6 dB
4 K Hz ± 3.6 dB
8 K Hz ± 5.6 dB
Remark :
The above spec. are tested under the
environment RF Field Strength less
than 3 V/M & frequency less than 30
MHz only.
2
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