National Instruments NI PXIe-6672 Determining Sources and Destinations

Chapter 3 Hardware Overview

Figure 3-4 provides a more detailed view of the Selection Circuitry

referenced in Figure 3-3.

Figure 3-4. Signal Selection Circuitry Diagram

Determining Sources and Destinations

All signal routing operations can be characterized by a source (input) and

a destination. In addition, synchronous routing operations must also define

a third signal known as the synchronization clock. Refer to the Choosing

the Type of Routing section for more information on synchronous versus

asynchronous routing.

PFI<0..5>

PXI_TRIG<0..7>

PXI_STAR<0..16>

Software Trigger

GND

CLK

CLK/N

CLK/M

SYNCHRONIZATION

CLOCKS

SOURCE

DESTINATION

CLKIN*

* CLKIN only valid for PXI_STAR

Contents

Main Page Important Information Warranty Copyright Trademarks Patents Contents Page About This Manual Conventions National Instruments Documentation Related Documentation Introduction What You Need to Get Started Unpacking Software Programming Choices Safety Information Page Installing and Configuring Installing the Software Installing the Hardware Configuring the Module Page Figure 3-1. Functional Overview of the NI PXIe-6672 NI PXIe-6672 Front Panel Figure 3-2 shows the connectors and LEDs on the front panel of the NIPXIe-66 72. 5 Figure 3-2. NI PXIe-6672 Front Panel 1 2 3 4 Access LED Active LED Connectors Hardware Features Page Clock Generation Direct Digital Synthesis (DDS) PXI_CLK10 and TCXO Routing Signals Figure 3-3. High-Level Schematic of NI PXIe-6672 SignalRouting Architecture Determining Sources and Destinations Using Front Panel PFIs As Inputs Using Front Panel PFIs As Outputs Using the PXI Triggers Using the PXI Star Triggers Choosing the Type of Routing Asynchronous Routing Synchronous Routing Generating a Single Pulse (Global Software Trigger) Using the PXI_CLK10 PLL Page Calibration Factory Calibration TCXO Frequency PXI_CLK10 Phase DDS Start Trigger Phase Page A Specifications CLKIN Characteristics CLKOUT Characteristics PFI <0..5> Input Characteristics Output Characteristics PXI_STAR Trigger Characteristics PXI Trigger Characteristics TCXO Characteristics DDS Characteristics Physical Power Requirements Environment Operating Environment Storage Environment Shock and Vibration Safety Electromagnetic Compatibility CE Compliance Environmental Management Waste Electrical and Electronic Equipment (WEEE) RoHS B Technical Support and Professional Services Page Glossary Symbols A B C D Page Page P S T V Index A B C D E F G H I N O P R S T