The Klark Teknik model DN6000 is a Real Time Audio Spectrum Analyser in just 2U of rack space. Incorporating the latest in real time DSP technology, the DN6000 is more than just a frequency spectrum and reverberation time analyser. As a measuring instrument, it is designed to conform to the Type 1 requirements of IEC 804 and IEC 651 Standard Specifications for integrating-averaging sound level meters. The DN6000 remains, however, a cost effective and easy to use tool built to withstand a life on the road.
The DN6000 can perform real time 1/3 and 1/6 octave spectrum analysis via mic or line inputs, displaying the spectrum of the input signal as a series of columns, each representing the level at an ISO centre frequency. Recommended microphones include the Klark Teknik model 6051 or, for greater accuracy, the Bruel & Kjaer model 4006. While the full analysis is displayed on a large, bright LCD display, a red numerical LED display gives a constant read out of the signal level, either over all or at a user selected frequency. This can be easily read from a considerable distance under adverse lighting conditions. The display can be frozen at any time at the touch of a button. 32 non-volatile memories are provided for data storage, and new data can add to or replace the old. The DN6000 can generate sine wave or band limited pink noise test signals, gated or swept. The test signal can be muted at the touch of a button, independent of the ongoing analysis.
The display range is adjustable from 64dB to 6dB, giving a display resolution of 1 to 10 pixels per dB. The display response time is adjustable from 20 seconds to 10 milliseconds, giving an update rate of .05 to 100Hz. The maximum input level is adjustable from 70 to 140dB SPL or -30 to +40dBu. Input signals can overshoot the maximum input level by 12dB before affecting the measurement accuracy at other frequencies.
In Time mode, the DN6000 can perform RT60 (reverberation time), Leq (equivalent SPL) and Let (equivalent sound dose) measurements. RT60 measurements can analyse a room’s reverberant field for a maximum of 30 seconds using internal or external test signals. Leq and Let data can include up to 180 individual measurements, each up to 1 hour long. 16 non-volatile memories are provided in Time mode, independent of those in Frequency mode. Current data and memories can be printed out in graphic or table form via the built in parallel printer port.