Appendix A - Pinout Info | LabJack Public Support Documentation

X1-X5 are standard DB37 connector headers.
J1-J5 are alternate, OEM pin headers that appear next to the DB37 connectors X1-X5; a 40-pin (2x20) 0.1" spacing header will fit.
X1 (or J1) is used to interface the LabJack. X2-X5 (or J2-J5) provide access to 80 multiplexed analog input channels, FIO, DAC, VM+, VM-, and MIO lines.
The pin layout for the X1-X5 headers are shown in Diagram 1 and Tables A2.1-A2.5 below.
The pin layout for headers J1-J5 are shown in Diagram 2 and Tables A1.1-A1.5 below. The OEM headers J1-J5 have the 1 and 2 pin positions labeled on the MUX80-OEM board.

Table A1.1 OEM Pin-out for J type connector (2x20 Header .1 in) J1

1	GND	2	GND	3	PIN20 (10μA)
4	PIN2 (200μA)	5	FIO7	6	FIO6
7	FIO5	8	FIO4	9	FIO3
10	FIO2	11	FIO1	12	FIO0
13	MIO0/CIO0	14	MIO1/CIO1	15	MIO2/CIO2
16	PGND	17	Vs	18	Vm-
19	Vm+	20	PGND	21	DAC1
22	DAC0	23	AGND	24	AIN13
25	AIN12	26	AIN11	27	AIN10
28	AIN9	29	AIN8	30	AIN7
31	AIN6	32	AIN5	33	AIN4
34	AIN3	35	AIN2	36	AIN1
37	AIN0	38	GND	39	GND
40	GND

Table A1.2 OEM Pin-out for J type connector (2x20 Header .1 in) J2

1	GND	2	GND	3	PIN20 (10μA)
4	PIN2 (200μA)	5	FIO7	6	FIO6
7	FIO5	8	FIO4	9	FIO3
10	FIO2	11	FIO1	12	FIO0
13	MIO0/CIO0	14	MIO1/CIO1	15	MIO2/CIO2
16	GND	17	Vs	18	Vmux-
19	Vmux+	20	GND	21	DAC1
22	DAC0	23	AGND	24	N/C
25	N/C	26	AIN127	27	AIN126
28	AIN125	29	AIN124	30	AIN123
31	AIN122	32	AIN121	33	AIN120
34	AIN3	35	AIN2	36	AIN1
37	AIN0	38	GND	39	GND
40	GND

Table A1.3 OEM Pin-out for J type connector (2x20 Header .1 in) J3

1	GND	2	GND	3	N/C
4	N/C	5	AIN71	6	AIN70
7	AIN69	8	AIN68	9	AIN67
10	AIN66	11	AIN65	12	AIN64
13	N/C	14	N/C	15	N/C
16	GND	17	Vs	18	Vmux-
19	Vmux+	20	GND	21	AIN63
22	AIN62	23	AGND	24	AIN61
25	AIN60	26	AIN59	27	AIN58
28	AIN57	29	AIN56	30	AIN55
31	AIN54	32	AIN53	33	AIN52
34	AIN51	35	AIN50	36	AIN49
37	AIN48	38	GND	39	GND
40	GND

Table A1.4 OEM Pin-out for J type connector (2x20 Header .1 in) J4

1	GND	2	GND	3	N/C
4	N/C	5	AIN95	6	AIN94
7	AIN93	8	AIN92	9	AIN91
10	AIN90	11	AIN89	12	AIN88
13	N/C	14	N/C	15	N/C
16	GND	17	Vs	18	Vmux-
19	Vmux+	20	GND	21	AIN87
22	AIN86	23	AGND	24	AIN85
25	AIN84	26	AIN83	27	AIN82
28	AIN81	29	AIN80	30	AIN79
31	AIN78	32	AIN77	33	AIN76
34	AIN75	35	AIN74	36	AIN73
37	AIN72	38	GND	39	GND
40	GND

Table A1.5 OEM Pin-out for J type connector (2x20 Header .1 in) J5

1	GND	2	GND	3	N/C
4	N/C	5	AIN119	6	AIN118
7	AIN117	8	AIN116	9	AIN115
10	AIN114	11	AIN113	12	AIN112
13	N/C	14	N/C	15	N/C
16	GND	17	Vs	18	Vmux-
19	Vmux+	20	GND	21	AIN111
22	AIN110	23	AGND	24	AIN109
25	AIN108	26	AIN107	27	AIN106
28	AIN105	29	AIN104	30	AIN103
31	AIN102	32	AIN101	33	AIN100
34	AIN99	35	AIN98	36	AIN97
37	AIN96	38	GND	39	GND
40	GND

Table A2.1 OEM Pin-out for X type connectors (Dsub 37 Female) X1

1	GND	14	AIN9	27	Vs
2	PIN2 (200μA)	15	AIN7	28	Vm+
3	FIO6	16	AIN5	29	DAC1
4	FIO4	17	AIN3	30	AGND
5	FIO2	18	AIN1	31	AIN12
6	FIO0	19	GND	32	AIN10
7	MIO1/CIO1	20	PIN20 (10μA)	33	AIN8
8	PGND	21	FIO7	34	AIN6
9	Vm-	22	FIO5	35	AIN4
10	PGND	23	FIO3	36	AIN2
11	DAC0	24	FIO1	37	AIN0
12	AIN13	25	MIO0/CIO0
13	AIN11	26	MIO2/CIO2

Table A2.2 OEM Pin-out for X type connectors (Dsub 37 Female) X2

1	GND	14	AIN125	27	Vs
2	PIN2 (200μA)	15	AIN123	28	Vmux+
3	FIO6	16	AIN121	29	DAC1
4	FIO4	17	AIN3	30	AGND
5	FIO2	18	AIN1	31	N/C
6	FIO0	19	GND	32	AIN126
7	MIO1/CIO1	20	PIN20 (10μA)	33	AIN124
8	GND	21	FIO7	34	AIN122
9	Vmux-	22	FIO5	35	AIN120
10	GND	23	FIO3	36	AIN2
11	DAC0	24	FIO1	37	AIN0
12	N/C	25	MIO0/CIO0
13	AIN127	26	MIO2/CIO2

Table A2.3 OEM Pin-out for X type connectors (Dsub 37 Female) X3

1	GND	14	AIN57	27	Vs
2	N/C	15	AIN55	28	Vmux+
3	AIN70	16	AIN53	29	AIN63
4	AIN68	17	AIN51	30	AGND
5	AIN66	18	AIN49	31	AIN60
6	AIN64	19	GND	32	AIN58
7	N/C	20	N/C	33	AIN56
8	GND	21	AIN71	34	AIN54
9	Vmux-	22	AIN69	35	AIN52
10	GND	23	AIN67	36	AIN50
11	AIN62	24	AIN65	37	AIN48
12	AIN61	25	N/C
13	AIN59	26	N/C

Table A2.4 OEM Pin-out for X type connectors (Dsub 37 Female) X4

1	GND	14	AIN81	27	Vs
2	N/C	15	AIN79	28	Vmux+
3	AIN94	16	AIN77	29	AIN87
4	AIN92	17	AIN75	30	AGND
5	AIN90	18	AIN73	31	AIN84
6	AIN88	19	GND	32	AIN82
7	N/C	20	N/C	33	AIN80
8	GND	21	AIN95	34	AIN78
9	Vmux-	22	AIN93	35	AIN76
10	GND	23	AIN91	36	AIN74
11	AIN86	24	AIN89	37	AIN72
12	AIN85	25	N/C
13	AIN83	26	N/C

Table A2.5 OEM Pin-out for X type connectors (Dsub 37 Female) X5

1	GND	14	AIN105	27	Vs
2	N/C	15	AIN103	28	Vmux+
3	AIN118	16	AIN101	29	AIN111
4	AIN116	17	AIN99	30	AGND
5	AIN114	18	AIN97	31	AIN108
6	AIN112	19	GND	32	AIN106
7	N/C	20	N/C	33	AIN104
8	GND	21	AIN119	34	AIN102
9	Vmux-	22	AIN117	35	AIN100
10	GND	23	AIN115	36	AIN98
11	AIN110	24	AIN113	37	AIN96
12	AIN109	25	N/C
13	AIN107	26	N/C

^PGND

The Mux80 PCB has two ground planes: the main ground plane, which all Mux80 I/O and most GND pins should reference, and a special ground plane called PGND for certain noisy Mux80 components. PGND only appears on pins 8 and 10 on X1, or pins 16 and 20 on J1. There is no path between PGND and Mux80 GND when the Mux80 is unconnected. When Mux80 X1 or J1 is connected to a LabJack, both PGND and Mux80 GND should be connected to the LabJack ground plane.