Comparator Output Operation - Extech Instruments 407790A User Manual

Real time octave band analyzer

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3.6 Comparator Output Operation

The comparator output is an open collector output that can be used to control external

equipment.

1. Press the MENU button to enter the menu list screen.



2. Use the

ON/OFF setting.



3. Press the



4. Press the

then press  button. (Setting range 25 to 130dB, 1 - dB steps)

5. Follow the above steps to select "2). Comparator Band". Set the band to desired level then

press  button. (MAIN AP/31.5Hz/63Hz/...8kHz or 1/3 octave bands).

6. Press the MENU button to return to the measurement screen.



buttons to select "J). Comparator" then press  button to display the



buttons to select "ON" then press  button.



buttons again to select "1). Comparator Level". Set the desired level

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