System Blue connector S1 3-4 ?
#2
Jumpers 1-2 and 3-4 provide voltage for the E-Input.

Jumper 1-2 is for sending 5v and jumper 3-4 is for sending 3.3v VDD.

VDD actually comes from the voltage regulator IC501.

Should leave those jumpers as configured.

Jumper 5-6 is removable if you want to add an optional on/off switch.
Kevin McCormick KB0UOI
Macomb, IL USA
Stations: 1539
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Messages In This Thread
RE: System Blue connector S1 3-4 ? - by kevinmcc - 2016-09-07, 23:28
RE: System Blue connector S1 3-4 ? - by cutty - 2016-09-08, 18:38
RE: System Blue connector S1 3-4 ? - by Tobi - 2016-09-09, 08:45



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