Norsonic Nor1212, Instruction Manual

8 

Assembling 

Adjust the height of the microphone preamplifier assembly to be a 
slightly higher than the centre of the windscreen, see figure 3.1. 
(Approximately 11 cm). Tighten the fastening nut just enough so that the 
preamplifier will not move by its own weight as the microphone will be 
automatically located to the right position as the two halves are screwed 
together and it is important that the force used is minimal to prevent 
damage to the microphone grid. Accurate adjustment of the height of the 
microphone is very important to maintain the specification for the 
frequency response. Carefully screw on the upper part; this will press the 
microphone downward so the top of the microphone grid is placed 
accurately at the opening for the acoustic ports. Now carefully remove the 
upper part in order not to alter the height of the microphone.  Now tighten 
the fastening nut using hand force only and do not over-tighten.  

The purpose of the base screw is threefold: 

Important!

Follow the mounting instructions 
carefully; otherwise, the 
microphone may be harmed! 

• 

It is a base for mounting the microphone system on a mast or 
tripod. 

• 

It closes the main body, but has a water drain to let any 
condensate escape. 

Figure 3.2 The desiccator TA202 
is placed between the microphone 
and the preamplifier. 

• 

It forms a tension relief for the cable. 

Press the microphone cable slightly towards the preamplifier and mount 
the base crew at the lower end of the main body. 

After mounting of the upper protection part, the outdoor microphone unit 
will be ready for use. However, we recommend that you test the unit 
together with the measuring instrument by applying a calibrator before 
the upper part is mounted. 

3.3 

Mounting on a mast 

The outdoor microphone assembly may easily be mounted on a 
supporting mast that has a mounting stud suitable for connection to the 
Nor1212. The dimensions are given in the section dealing with the 
specification and are those commonly used on tripods for cameras.