B. spl/leq logging – NTi Audio Minilyzer ML1 User Manual

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By exceeding the primary indicator range four overload arrows

replacing the dBL

reading and no reading below is shown (see

Fig. 13). Select the right arrow below RNGE and press enter to

change to the next higher bargraph range. In case signal clipping

has occurred the term OVL is flashing above the RNGE field as long

as this peak, is significant influencing the integrating sound pressure

level reading. For example an SPL peak for 0.1 sec. will have effects

to the L

reading for several seconds but it’s contribution can be

neglected after ten minutes.

b. SPL/LEQ Logging

The Minilyzer together with the optional MiniLINK USB PC interface

enables the data logging of all test results.

Note:

The logging function is a free add-on to the

MiniLINK, available after the registration of your test

instrument

The Minilyzer can record the SPL/LEQ curve flow, e.g. during an

event, for many hours. The results can then be loaded to a PC and

visualized as a level diagram using e.g. Microsoft Excel.

The stored results remain within the Minilyzer memory even in the

event of a battery failure during the recording session.

Fig 3.5 SPL Logging Start

Start SPL/LEQ logging

After the ML1 is successfully

registered, you will find

the additional "LOG AS ...“

function in the LEVEL SPL

memory menu. This feature

enables you to record the

following test results:
• Actual SPL and LEQ

value

• LEQ Overload
• At each recording interval:

SPL averaged, minimum

and maximum

Measurement Functions