Specifications - Extech Instruments 407744 User Manual

Specifications

Output signals
Output signal accuracy
(@ 23±5°C)
Output signal frequency
Accuracy of output signal frequency
Compatible microphones size
Total Harmonic Distortion (THD)
Operating temperature
Power supply
Power consumption
Battery check
Dimensions
Weight
Standards meets
Standards
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407744: 94dB
407766: 94dB and 114dB
407744: ± 0.5dB;
407766: ± 0.5dB (94dB), ±0.8dB (114dB)
1 KHz sine wave
± 5%
0.5" microphones
<2%@94dB (407744 and 407766)
<5%@114dB (407766)
0 to 50°C (32 to 122°F)
Two (2) 9V batteries
Approx. 10mA DC
Status LED
50 x 145mm (2.0" diameter x 5.7" length)
340g (0.75 lbs.)
IEC 60942 1997-11 class 2
Meets IEC 60942 1997-11 class 2
4 407744 & 407766-en-GB_v5.4 11/17