B&K 2250 Light Manual do Utilizador descarregar pdf (Página 132)

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Hand-held Analyzer Types 2250 and 2270 – User Manual

9) Under Markers you can specify the names of the five available markers. The markers are

predefined as follows:

• Marker 1: ‘Exclude’ – can be controlled by pressing the Back-erase pushbutton

• Marker 2: ‘Manual’ – can be controlled by pressing the Manual Event pushbutton

• Marker 3: ‘Level’ – can be controlled by the Level Trigger detection

• Marker 4: ‘Marker 4’

• Marker 5: ‘Marker 5’

• Marker 6: ‘Sound’ – is set when recording signal (typically sound) – requires Signal

Recording Software BZ-7226

All markers can be controlled by the stylus in the Profile display.

You can set a Pre-marker Time between 0 and 5 seconds. This will start markers 1, 2 or 3

the set number of pre-marker seconds before the point where the Back-erase pushbutton,

the Manual Event pushbutton, or the Level Trigger, respectively, are pressed. See section

11.3.2.

10) Under the Level Trigger parameters, choose the settings for triggering the number 3

marker ‘Level’, for starting a signal recording and for sending an SMS or e-mail – see

section 8.4 and Chapter 12:

•Set Level Trigger Control to On to enable the level trigger facility or Off to disable the

facility

•Set Trigger Parameter to the parameter you want to monitor, for example, L

Aeq

– see

Appendix A for the total list of parameters

•Set Start Slope to Rising if you want to start when the Trigger Parameter exceeds

Start Level (and stop when it goes below Stop Level) or to Falling if you want to start

when the Trigger Parameter goes below Start Level (and stop when it exceeds Stop

Level)

•Set Start Duration for the number of seconds the Trigger Parameter must fulfil the

trigger condition before the trigger point is acknowledged

•Set Stop Duration for the number of seconds the Trigger Parameter doesn’t fulfil the

trigger condition anymore to acknowledge the end point of the trigger (see the

relationship between the trigger parameters in Fig.11.2)

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B&K 2250 Light Manual do Utilizador Página 132