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CHAPTER 5

Calibration

light will indicate a fast flashing red and an error description will appear in the Status

Field.

Hint: If the microphone is separated from the analyzer using a microphone extension

cable then place the analyzer so it can be seen from the location of the microphone. Start

the calibration process (select the Calibration screen and tap the button on the

screen), then go to the microphone and fit the Calibrator onto the microphone, switch on

the Calibrator and monitor the traffic light on the the analyzer, as discussed previously.

8) Once you have completed the calibration, tap the button and remove the calibrator.

It will automatically switch off after a few seconds.

5.3.2 Calibration Settings

Select the Details tab on the Calibration screen to view the calibration details (Fig.5.2).

Fig.5.2

Calibration details screen

This screen displays the following information:

• Details of the last calibration: date, sensitivity, deviation from last calibration and

deviation from initial calibration

• The connected transducer: type and serial number

Note: You select a new transducer by tapping on the Main Menu icon and selecting

Setup, followed by Input)

• Max. Input Level: The maximum sinusoidal input level to be measured without overload

indication

•A Calibration History link, which is provided to enable you to view a history of transducer

and calibration settings, see below

The calibration settings can be adjusted as follows:

• Calibrator: Select between Type 4231 and a custom calibrator

• Calibration Level: Enter the specific level of your custom calibrator. If you are using,

Type 4231, calibrator level is automatically detected, (shown as Auto detect)

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B&K 2250 Light Bedienungsanleitung Seite 65