Extech Instruments 407790A User Manual page 20

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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 button to enter the menu list screen.
-
+
2. Use the / buttons
ON/OFF setting.
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+
3. Press the / buttons
-
+
4. Press the buttons again to select 1). Comparator Level
then press button. (Setting range 25 to 130dB, 1 - dB steps)
5. Follow the above steps to select 2). Comparator Band
press button
6. Press the button to return to the measurement screen.
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J). Comparator then press button to display the
ON then press button.
et the band to desired level then
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AP
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et the desired level
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