Standard Horizon HX751 Service Manual page 13

TX: 1.2 V
TX: 1.9 V
RX: 4.5 V
RX: 3.0 V
TX: 0 V
RX: 4.5 V
TX: 4.4 V
RX: 4.8 V
TX: 5.0 V
RX: 0 V
TX: 5.0 V
RX: 0 V
TX: 0 V
RX: 7.3 V
TX: 7.4 V
RX: 6.7 V
TX: 0 V
RX: 2.4 V
3.4 V
HX760S
BU-1 "Installed": 3.3 V
BU-1 "Removed": 0 V
HX760S
Bluetooth "Linked": 3.5 V
Bluetooth "Unlinked": 0 V
3.5 V
HX760S
7.4 V Bluetooth "ON": 2.2 V
TX: 1.8 V
RX: 5.0 V
DIMMER "3": 4.4 V
TX: 5.0 V
RX: 2.1 V
TX: 0 V
TX: 0 V
RX: 3.5 V
RX: 3.7 V
TX: 3.6 V
RX: 0 V
DIMMER "3": 0.4 V
2.1 V
4.1 V
1.8 V
4.1 V
0 V
2.1 V
1.7 V
1.5 V
0.6 V
TX: 3.5 V
RX: 0 V
3.5 V
TX: 0 V
RX: 3.5 V
0.9 V
1.8 V
2.8V
3.3 V
2.0 V
TX: 4.3 V
TX: 3.4 V
RX: 0 V
RX: 1.3 V
TX: 0.6 V
RX: 2.9 V
2.8 V
RX SIGNAL "NON": 1.2 V
RX SIGNAL "40 dBµ": 0.5 V
TX: 2.7 V
RX: 1.7 V TX: 2.1 V
RX: 0.1 V
1.7 V
PITCH "ON": 3.5 V
PITCH "OFF": 0 V
6.7 V
2.7 V
3.5 V
MAIN Unit
Circuit Diagram
TX: 1.7 V
RX: 0 V
TX: 0.8 V
TX: 2.4 V RX: 0 V
RX: 0 V
TX: 0 V
RX: 2.3 V
TX: 0 V
RX: 0.6 V
TX: 0 V
TX: 0 V
TX: 0 V RX: 4.2 V
RX: 1.9 V
RX: 4.6 V
TX: 0 V
RX: 4.9 V
TX: 0 V
RX: 1.4 V
RX SIGNAL "NON": 0.6 V
RX SIGNAL "40 dBµ": 1.9 V
TX: 0 V
RX: 4.9 V
3.4 V
5.0 V
3.5 V
2.2 V
2.8 V
0 V
5.4 V
4.0 V
TX: 4.8 V
RX: 0 V
13