4
•
Frequency for acoustic testing:
8000Hz
.
•
Warm-up time:
≦
2min
•
Sampling interval:
Bar graph indication → 125 ms approx.
Numeric indication → 1 sec approx.
•
Data record capacity:
Data can be stored in the memory.
Max. 32000 data can be stored.
Max. 255 blocks can be split.
Display LCD
•
Display screens
:
4 digit numerical indication of sound level, from 30.0 to 130.0dB with 0.1dB
resolution.
Bar-graph indication of current sound level with 1dB resolution.
Sound level range indicator: 30–90dB, 40–100dB, 50–110dB, 60–120dB or
70–130dB in five ranges.
Time display; year – month – day and hour: minute: second.
•
Display update rate:
1 second
•
Display first indication:
Depends on the condition the instrument when it was last
turned off.
•
Warning indications:
Out-of-range indications:
OVER displayed at upper limit of the range
UNDER displayed at lower limit of the range
Outputs
•
AC output
(using selected frequency weighting)
Output voltage:
1Vrms (at full-scale of the range)
Output impedance:
5k
Ω
Load impedance:
≧
1M
Ω
•
DC output
Output voltage:
10mV/dB
Output impedance:
5k
Ω
Load impedance:
≧
1M
Ω
•
I/O connector:
Sound level meter control from and data output to a computer (RS232)
Clock:
Real–time (with calendar)
Power requirements
•
Qty 4 x 1.5V IEC R6P (size “AA”) manganese super heavy duty batteries or
equivalent.
•
Battery life
: Approx. 50 hours
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