
Appendix 3: PIN Assignments
Socket
Connector
Pin 1
Pin 2
Pin 3
Mains
Live
Neutral
Earth
Headphone x 2;
Insert x 2; Bone
Ground
Signal
Talkback; Patient
Response
Ground
DC Bias
Signal
Ext. CD
Ground
CD2
CD1
Talk Forward
Ground
DC Bias
Signal
Monitor
Ground
Right
Left
FF x 2
Ground
Signal
USB A x 4 (Host)
USB B (Device
1. +5V DC
1. +5V DC
2. Data -
2. Data -
3. Data +
3. Data +
4. Ground
4. Ground
LAN Ethernet
Not Supported