National Instruments SC-2040 - Manual (Page 35)

Theory of Operation Chapter 4
SC-2040 User Manual 4-2 © National Instruments Corporation
T/H T/H
Input
Protection
Input
Protection
+ -
Inst. Amp
+ -
Inst. Amp Gains Gains
• • •
• • • • •
• • •
• • •
A A
68-Pin I/O Connector
50-Pin Breakout Connector
ACH0 ACH7
PFI7 PFI2
(T
rack/Hold Signal)
+5 V
+15 V -15 V
Power-On LED
External +5 V
Power Converter
(External T
rigger)
External T
rack/Hold
T
rigger
CH7+ CH7- CH0- CH0+
Figure 4-1. SC-2040 Block Diagram