For analysis of more demanding monitoring situations the NL-18 offers 1/3 and 1/1 octave bands. It also offers noise profiling, rapidly storing noise data which it displays on its second screen. Simple to use, the NL-18 has 4 visible 'user' buttons which offer straightforward start/stop operation based on pre-set options.

• Fast data-logging
• Dual display screen
• Continuous time-history trace
• 1/1 and 1/3 octave bands
• Direct print-out