B&K 2250 Light Instrukcja Użytkownika Pobierz pdf (Strona 21)

CHAPTER 2

Assembling Your Analyzer

To Connect:

1) Gently screw Microphone Type 4950 onto Preamplifier ZC-0032 (see items 1 and 2 in

Fig.2.1).

2) Insert the male plug of the preamplifier into the top socket of the Hand-held Analyzer (see

item 17 in Fig.2.1) and push gently until it snaps into position.

To Disconnect:

1) To remove the preamplifier and microphone, grip the locking collar firmly and slide

back, to remove the preamplifier and microphone combination from 2250 Light.

Mounting the Windscreen

For short outdoor noise measurements (or indoor measurements exposed to air movement),

mount Windscreen UA-0237 onto the microphone and preamplifier combination.

Mounting 2250 Light onto the Tripod Extension Stem and Tripod

Mount 2250 Light onto the Tripod Extension Stem UA-1651 and Small Tripod UA-0801, as

follows:

1) Screw Tripod Extension Stem UA-1651 onto the threaded stud of the ball-joint on Small

Tripod UA-0801. Secure the ball-joint in a roughly vertical position (that is, in-line with

the tripod) until ready to follow the instructions in step 4).

2) Screw the Extension Stem UA-1651 into the 2250 Light, using the threaded socket

situated on the underside of 2250 Light, at the back, (see item 18 in Fig.2.1).

3) Set Small Tripod UA-0801 (including 2250 Light) in the required position, and adjust it to

the required height. Ensure that one of the three legs is pointing in roughly the same

direction as your 2250 Light needs to point. (We will refer to this leg as the front leg.)

4) Position the extension stem at an angle of 45

° to the horizontal and vertically in-line with

the front leg of the tripod – this is to ensure the whole setup is stable.

Note: The procedure is the same if Tripod UA-0587 is used instead of Small Tripod UA-0801.

Once you have carried out these instructions, you are ready to start measuring, see Chapter 3.

2.5.3 Alternative Measurement Method (Extended Microphone)

The measurement microphone can be placed a distance from 2250 Light by connecting an

extension cable and fitting the microphone to a microphone holder. 2250 Light should be set up

using the following assembly instructions. This is to ensure that the accessories have limited

acoustical influence on the instrument during measurement. All the components described

below are shown in Fig.2.1 and Fig.2.4.

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B&K 2250 Light Instrukcja Użytkownika Strona 21