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4-3
Figure 4-2. Main I/O Connector on a DAS-801 or DAS-802 Board
You attach an STC-37 screw terminal connector directly to the main
I/O connector on the DAS-800 Series board. You attach an STA-08 or
STA-08PGA screw terminal accessory or an EXP-16, EXP-16/A, or
EXP-GP expansion board to the main I/O connector on the DAS-800
Series board using either a C-1800 or S-1800 cable. The C-1800 is the
unshielded version of the cable; the S-1800 is the shielded version of
the cable.
Attaching an STC-37 Screw Terminal Connector
The screw terminals on the STC-37 screw terminal connector allow you
to connect field wiring to a DAS-800 Series board. The screw terminals
are labeled from 1 to 37 and correspond directly to the functions of the
pins on the main I/O connector on the board. For example, since pin 24
is assigned to the external clock source, use screw terminal 24 to attach
a hardware external clock. Refer to Appendix B for a complete list of
pin assignments.
IN0
−
Pin 19
IN1
−
Pin 18
IN2
−
Pin 17
IN3
−
Pin 16
IN4
−
Pin 15
IN5
−
Pin 14
IN6
−
Pin 13
IN7
−
Pin 12
DIG COM Pin 11
OP4
Pin 10
OP3
Pin 9
OP2
Pin 8
OP1
Pin 7
OUT2
Pin 6
OUT1/CCLK
Pin 5
CLK1
Pin 4
OUT0
Pin 3
CLK0
Pin 2
+12 V
Pin 1
Pin 37
IN0+
Pin 36
IN1+
Pin 35
IN2+
Pin 34
IN3+
Pin 33
IN4+
Pin 32
IN5+
Pin 31
IN6+
Pin 30
IN7+
Pin 29
+5 V
Pin 28
DIG COM
Pin 27
IP3
Pin 26
IP2
Pin 25
IP1/TRIG
Pin 24
INT_IN/XCLK
Pin 23
GATE2
Pin 22
GATE1
Pin 21
GATE0
Pin 20
−
12 V
Top of Board (Rear View)