| Accuracy |
ANSI S1.4 & S1.43 Type 2, IEC 61672-1, 2002-5 |
| Frequency Weightings |
A, & C |
| Time Weightings |
Slow, Fast, Impulse |
| Microphone Type |
¼" Electret Mic in standard ½" fixed housing |
| Measurement Range |
30 to 100 dB
60 to 130 dB |
| Noise Floor (A weighted dB) |
< 33 |
| Dynamic Span on Single Range (dB) |
70 dB |
| Displayed Parameters Always Available on All User Available Screens |
Instantaneous level - Lp
Maximum level - Lmx
Time average value - Leq or Lavg |
| Display |
Type: 128 x 128 dot matrix LCD screen including real time analog bar graph |
| Resolution numeric (dB) - 0.1 |
| Resolution graphical (dB) - 1 |
| Update Rate for Display |
0.5 seconds |
| Displayed Time Span for Time History Chart |
Last 1 or 5 |
| Calibration Method |
Automatically recognized by meter |
| Signal Detected when Calibrator Placed Over Microphone at 1 kHZ Frequency |
Calibration level set to 114.0 or 94.0 dB |
| External Power Option |
Yes with CMC51 cable via USB socket |
| Analog Outputs |
AC and optional DC via 2.5 mm jack socket |
| AC Output Characteristics |
About 0.85V RMS FSD output on selected sound level measurement range. Minimum load impedance 22kΩ |
| DC Output Characteristics |
0 to 1.3 VDC for FSD on selected range. Output corresponds to selected frequency and time weighting. 2kΩ output impedance |
| Digital Output |
USB 2.0 format of instantaneous sound level via "mini A" USB |
| Digital Output Characteristics |
Instantaneous SPL output, software required, as per selected frequency and time weighting |
| Temperature Range |
32 - 104ºF, Class 2 |
| Effect of Humidity |
Less than ±0.5 dB over the range of 30 to 90% RH non condensing |
| Operating Pressure Range |
650 to 1080 mbar |
| Batteries |
3 x AA alkaline or rechargeable types |
| Battery Life |
Up to 35 hours |
| Dimensions |
2.8 x 8.3 x 1.2" |
| Weight |
8.8 ounces |
| Operator Controls |
Buttons for power On/Off and 2 x context sensitive menu selection plus initial configuration screen |