Card Type	Data acquisition
Chipset	Unidentified
I/O Options	Relay outputs (4)
Data Bus	XDI module

CONNECTIONS
Function	Label	Function	Label
XDI to second XO-SRA4 or XO-SRD4 card	J1	Bit 4 fuse	F4
XDI header input	J2	Test/storage fuse	F5
Bit 1 fuse	F1	Test/storage fuse	F6
Bit 2 fuse	F2	Signal outputs (see pinout below)	SC1
Bit 3 fuse	F3

SC1 PINOUT
Function	Screw	Function	Screw
Bit 1 output	1	Bit 3 output	5
Bit 1 output	2	Bit 3 output	6
Bit 2 output	3	Bit 4 output	7
Bit 2 output	4	Bit 4 output	8

USER CONFIGURABLE SETTINGS
Setting	Label	Position
Card is Least Significant Nibble	JP1	Pins 2 & 3 closed
Card is Most Significant Nibble	JP1	Pins 1 & 2 closed
Output channels initialized to low state	JP2	Pins 1 & 2 closed
Output channels initialized to high state	JP2	Pins 2 & 3 closed
Note:When a second XO-SRx4 card is connected via J1, one card must be set to the Most Significant Nibble and the other to the Least Significant Nibble.

DIAGNOSTIC LED(S)
LED	Color	Status	Condition
L1	Unidentified	On	Bit 1 is high
L1	Unidentified	Off	Bit 1 is low
L2	Unidentified	On	Bit 2 is high
L2	Unidentified	Off	Bit 2 is low
L3	Unidentified	On	Bit 3 is high
L3	Unidentified	Off	Bit 3 is low
L4	Unidentified	On	Bit 4 is high
L4	Unidentified	Off	Bit 4 is low
L5	Unidentified	On	Fuse in F5 is good
L5	Unidentified	Off	Fuse in F5 is bad
L6	Unidentified	On	Fuse in F6 is good
L6	Unidentified	Off	Fuse in F6 is bad

MISCELLANEOUS TECHNICAL NOTES

This card is an expansion module for Acqutek Corporation’s data acquisition cards. See other documents from this manufacturer for more information.