Accuracy | ANSI S1.4 and IEC 61672 type 2 |
Total measurement range (dB) | 30 to 130 |
Dynamic span on single range (dB) | 70 |
Number of measurement ranges - 2 ranges (Low and High dB) | (30-100 & 60-130) |
Noise floor (A weighted dB) | <33 |
Frequency weightings | A and C |
Time weightings | Slow. Fast and Impulse |
Displayed parameters available on all user screens | Instantaneous level - Lp Maximum level - Lmx Time avg. value - Leq, Lavg |
Reset of maximum and average level by user | Yes - with non-decaying max hold |
Display type | 128 x 128 dot matrix LCD digital includinq real-time analoq bar qraph scale |
Display resolution - numeric (dB) | 0.1 |
Display resolution-graphical (dB) | 1 |
Update rate for display (seconds) | 0.5 |
Displayed time span for time history chart (minutes) | 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 without the need for user adjustment |
External power option (5 Vdc) | Yes with CMC51 cable via USB socket |
Analog outputs | AC (and optional DC) via 2.5 mm jack socket |
AC output characteristics - (Provided for DAT tape / PC wav file recording or headphone applications) | Approx 0.85V RMS FSD output on selected sound level measurement range. Minimum load impedance 22k£i. |
DC output characteristics - (Provided at time of order as option for connection to chart recorder or pc data logging system) | 0 to 1,3V DC for FSD on selected range. Output corresponds to selected frequency and time weighting. 2kfi Output impedance |
Digital output | USB 2.0 format of instantaneous sound level via 'mini A' USB socket (also powers meter) |
Digital output characteristics -(value output once per second) | Instantaneous SPL output (software required) as per selected frequency and time weightings. |
Memory storage in up to 100 separate runs + date and time from internal real time clock (242S246) | 419,000 samples maximum with up to 65,000 per individual run |