Card Type	Data Acquisition
I/O Options	Solid-state relay, high-speed parallel, low-speed parallel
Data Bus	N/A

CONNECTIONS
Function	Label	Function	Label
PBX-721 header	CN1	Power terminals (see pinout below)	SC1
I/O channel 1 (see pinout below)	CN2	Terminals for channels 1 & 2 (see pinout below)	SC2
I/O channel 2 (see pinout below)	CN3	Terminals for channels 1 & 3 (see pinout below)	SC3
I/O channel 3 (see pinout below)	CN4

CN2-CN4 PINOUT
Function	Pin	Function	Pin
Bit 0	1	Bit 0	14
Bit 1	2	Bit 1	15
Bit 2	3	Bit 2	16
Bit 3	4	Bit 3	17
Bit 4	5	Bit 4	18
Bit 5	6	Bit 5	19
Bit 6	7	Bit 6	20
Bit 7	8	Bit 7	21
Not used	9	Not used	22
Not used	10	Not used	23
Not used	11	Not used	24
Not used	12	Not used	25
Not used	13	Not used	26

SC1 PINOUT
Function	Screw	Function	Screw
AC or +VDC in	1	Power ground	3
AC or -VDC in	2

SC2 PINOUT
Function	Screw	Function	Screw
Channel 1 bit 0	1	Channel 1 bit 6	7
Channel 1 bit 1	2	Channel 1 bit 7	8
Channel 1 bit 2	3	Channel 3 bit 0	9
Channel 1 bit 3	4	Channel 3 bit 1	10
Channel 1 bit 4	5	Channel 3 bit 2	11
Channel 1 bit 5	6	Channel 3 bit 3	12

SC3 PINOUT
Function	Screw	Function	Screw
Channel 2 bit 0	1	Channel 2 bit 6	7
Channel 2 bit 1	2	Channel 2 bit 7	8
Channel 2 bit 2	3	Channel 3 bit 4	9
Channel 2 bit 3	4	Channel 3 bit 5	10
Channel 2 bit 4	5	Channel 3 bit 6	11
Channel 2 bit 5	6	Channel 3 bit 7	12