National Instruments SCB-68 - Page 83

Chapter D SCB-68 Circuit Diagrams
SCB-68 Shielded Connector Block User Manual D-2 ni.com
Figure D-2. Cold-Junction Compensation Circuitry
Figure D-3. Digital Trigger Circuitry
ACH0
(I/O Pin 68)
S5
CJC Not Used
CJC Used
R38
Q1
+5V
C3
(0.1 µF)
C5
(1
µF)
R23
+5V
R5
ACH8
Screw Terminal
S4
ACH8
(I/O Pin 34)
RSE CJC
or Non-MIO
DIFF CJC
AI
AI
AI
AIGND
RC13
+
User Configurable
R22
+5V
ACH0
Screw Terminal
AIGND
RC12
+
User Configurable
R4
RC1
PFI0/TRIG1
(I/O Pin 11)
R1
DGND
(I/O Pin 44)
PFI0/TRIG1 Screw Terminal
DGND Screw Terminal