RED2 Pinout Diagram

Vertical Connector (top to bottom

 -V
: -4v DC (capable of providing ~ 50mA)
+V: +4v DC (capable of providing ~ 50mA)
Impedance Analyzer  (not released)
Impedance Analyzer  (not released)
GND : analog ground
Speaker - : Audio Out 
Speaker + : Audio Out
GND : analog ground
Phones R : Audio Out Right Channel
Phones L : Audio Out Left Channel
GND : analog ground
AWG2 : Arbitrary Waveform Generator Channel 2 (Same as FG 2)
GND : analog ground
AWG1 : Arbitrary Waveform Generator Channel 1 (Same as FG 1)

A2-  : Analog Channel 2 Input (- side of differential front end)
GND : analog ground
A2+ : Analog Channel 2 Input (+ side of differential front end)
A1-  : Analog Channel 1 Input (- side of differential front end)
GND : analog ground
A1+ : Analog Channel 1 Input (+ side of differential front end)
 
Please Note: all GND (analog ground) connections are common
 

Horizontal Connector (left to right)
 
Digital I/O 1 - 16 : Digital Input/Output Pins (Software selectable for input or output)
PWM1 : Pulse Width Modulation Channel 1 
PWM2 : Pulse Width Modulation Channel 2
3.3V :  +3.3v DC (used for the digital portion of the board)
DGND : digital ground
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