User manual
REI2 
User manual 
Doc: R2U_2_1079_002_E 
Version: 1.07.9 
Page 
12 of 64 
2.2. Back 
SUPPLY
ANALOG I/O DIGITAL I/O
RADIO
COMPUTER
A
COMPUTER
B
DISPLAY
BOARD
REI 2
NET
START LAP STOP AUX
TIMING
INPUTS
LINKPOD
POWER
1
2
3
4
5
6
7
8
9
10
11
12
13
15
16
14
Fig. 5 – Back (connectors) 
2.3. Connectors 
1. On/Off Switch 
2. Power 
3.  Analogue inputs for the connection of sensors with analogue outputs, such as the sensors for air 
temperature/humidity and snow temperature 
4.  Digital input output for connection to devices with digital command (e.g. MicroSem signal 
light) or unblocking devices 
5.  Input for LinkGate Decoder and DecRadio connection 
6.  Serial I/O ‘A’ for computer connection 
7.  Seriale I/O ‘B’ for computer connection. The two connections can supply and receive different 
data simultaneously 
8. Connection for displayboards 
9.  Connection for REI2 NET network – a number of REI2 operators collaborate at the same event 
10. Start line input 
11. Lap line input 
12. Stop line input 
13. Aux line input 
14. Grounds 
15. Lines: input (duplicated) of the main lines 
16. Connection for LinkPod system 










