Theory Of Operation; Functional Overview; Figure 1-1. Scxi-1126 Block Diagram - National Instruments SCXI-1126 User Manual

Chapter 1 Installing and Configuring the SCXI-1126

Theory of Operation

Functional Overview

Comparator with
Input Protection
Threshold and
Hysteresis
(8-bit
Resolution)
Comparator with
Input Protection
Threshold and
Hysteresis
(8-bit
Resolution)
Comparator with
Input Protection
Threshold and
Hysteresis
(8-bit
Resolution)
SCXI-1126 User Manual
For easy signal attachment to the SCXI-1126, you can use a terminal block
to connect such signal connection options as screw terminals and BNC
connectors.
With the SCXI-1126, the SCXI chassis can serve as a fast-scanning signal
conditioner for laboratory testing, production testing, and industrial
process monitoring.
Detailed specifications of the SCXI-1126 are listed in Appendix A,
Specifications.
This section contains a functional overview of the SCXI-1126 module and
explains the operation of each functional unit making up the SCXI-1126.
The block diagram in Figure 1-1 illustrates the key functional components
of the SCXI-1126.
Frequency to
Optical Isolation
Voltage
Conversion
Range/Filter
Optical Isolation
Settings
Frequency to
Optical Isolation
Voltage
Conversion
Range/Filter
Optical Isolation
Settings
Frequency to
Optical Isolation
Voltage
Conversion
Range/Filter
Optical Isolation
Settings
8:1 Analog
Multiplexer
Analog Bus
Switch

Figure 1-1. SCXI-1126 Block Diagram

1-2
CH0+
Buffer
CH0–
CH1+
CH1–
CH7+
CH7–
AOGND
Multiplexer
OUTREF
Scan Clock
Digital
Interface and
Control
Calibration
EEPROM
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