Use the pinout to connect to terminals on the RTI-12305.

JR1 and XP3

JR1 is an 8-position Molex Ultra-Fit™ connector. XP3 is an 8-blade Universal Power Module (UPM). XP3 is in the standard position with pinout for fully compatible rear I/O.

Figure 2. JR1 and XP3 Pinouts


Table 1. JR1 and XP3 Pin Mapping
JR1 Pin JR1 Signal XP3 Pin Description
8 V1+ H Positive Voltage 1
4 V1- G Negative Voltage 1
7 V2+ F Positive Voltage 2
3 V2- E Negative Voltage 2
6 V3+ D Positive Voltage 3
2 V3- C Negative Voltage 3
5 V4+ B Positive Voltage 4
1 V4- A Negative Voltage 4

JR2 and XP2

JR2 is an HD44 connector. XP2 is a 110-pin Hard Metric type A connector. XP2 is in the standard position with pinout for fully compatible rear I/O.

Figure 3. JR2 and XP2 Pinouts


Table 2. JR2 and XP2 Pin Mapping
JR2 Pin XP2 Signal JR2 Pin XP2 Signal JR2 Pin XP2 Signal
44 P3.3+ 30 P3.2- 15 P3.2+
43 P3.3- 29 P3.1- 14 P3.1+
42 GND 28 P3.0- 13 P3.0+
41 GND 27 NC 12 NC
40 P2.3+ 26 P2.2- 11 P2.2+
39 P2.3- 25 P2.1- 10 P2.1+
38 NC 24 P2.0- 9 P2.0+
37 NC 23 NC 8 NC
36 P1.3+ 22 P1.2- 7 P1.2+
35 P1.3- 21 P1.1- 6 P1.1+
34 GND 20 P1.0- 5 P1.0+
33 GND 19 NC 4 NC
32 P0.3+ 18 P0.2- 3 P0.2+
31 P0.3- 17 P0.1- 2 P0.1+
— — 16 P0.0- 1 P0.0+
Table 3. XP2 Input/Output Pin Assignments
Row a b c d e
1 P0.0+ P0.0- NC P0.1+ P0.1-
2 P0.2+ P0.2- NC P0.3+ P0.3-
3 GND GND GND GND GND
4 P1.0+ P1.0- NC P1.1+ P1.1-
5 P1.2+ P1.2- NC P1.3+ P1.3-
6 GND GND GND GND GND
7 P2.0+ P2.0- NC P2.1+ P2.1-
8 P2.2+ P2.2- NC P2.3+ P2.3-
9 GND GND GND GND GND
10 P3.0+ P3.0- NC P3.1+ P3.1-