Output Noise
We use a Class 1
Bruel & Kjaer 2250-L G4 sound analyzer equipped with a Type 4955a microphone. It features a weighted dynamic range that starts at below 6 dBA and goes up to 110 dBA. All tests are conducted inside a hemi-anechoic chamber at 25–28 °C ambient, and the test subject is placed a meter away from the sound analyzer.
Output Noise Comparison Graphs
The following graphs show the output noise of the DS620slim and compare it to that of other units we have tested in the past.