National Instruments NI PCI-6110, NI PCI-6111 - page 35

Chapter 4 Connecting Signals

© National Instruments Corporation 4-5 NI PCI-6110/6111 User Manual

PFI2/CONVERT* DGND Input

Output

PFI2/Convert—As an input, this is a PFI.

As an output, this is the CONVERT* signal.

Ahigh-to-low edge on CONVERT* indicates that an

A/D conversion is occurring.

PFI3/GPCTR1_SOURCE DGND Input

Output

PFI3/Counter 1 Source—As an input, this is a P FI.

As an output, this is the GPCTR1_SOURCE signal. This

signal reflects the actual source connecte d to the

general-purpose counter 1.

PFI4/GPCTR1_GATE DGND Input

Output

PFI4/Counter 1 Gate—As an input, this is a PFI.

As an output, this is the GPCTR1_GATE signal. This

signal reflects the actual gate signal connected to the

general-purpose counter 1.

GPCTR1_OUT DGND Output Counter 1 Output—This output is from the

general-purpose counter 1 output.

PFI5/UPDATE* DGND Input

Output

PFI5/Update—As an input, this is a PFI.

As an output, this is the UPDATE* signal. A high-to-low

edge on UPDATE* indicates that the AO primary group

is being updated.

PFI6/WFTRIG DGND Input

Output

PFI6/Waveform Trigger—As an input, this is a PFI.

As an output, this is the WFTRIG signal. In tim ed

AOsequences, a low-to-high transition indicates the

initiation of the waveform generation.

PFI7/STARTSCAN DGND Input

Output

PFI7/Start of Scan—As an input, this is a PFI.

As an output, this is the STARTSCAN signal. This pin

pulses once at the start of each AI scan in the interval

scan. Alow-to-high transition indicates the start of the

scan.

PFI8/GPCTR0_SOURCE DGND Input

Output

PFI8/Counter 0 Source—As an input, this is a P FI.

As an output, this is the GPCTR0_SOURCE signal. This

signal reflects the actual source connecte d to the

general-purpose counter 0.

PFI9/GPCTR0_GATE DGND Input

Output

PFI9/Counter 0 Gate—As an input, this is a PFI.

As an output, this is the GPCTR0_GATE signal. This

signal reflects the actual gate signal connected to the

general-purpose counter 0.

Table 4-2. Signal Descriptions for I/O Connector Pins (Continued)

Signal Name Reference Direction Description

Contents

Main Page Important Information Warranty Copyright Trademarks Patents Compliance FCC/Canada Radio Frequency Interference Compliance Determining FCC Class FCC/DOC Warnings Class A Contents Chapter 4 Connecting Signals Page About This Manual Conventions National Instruments Documentation Related Documentation Introduction About the NI PCI-6110/6111 What You Need to Get Started Software Programming Choices NI-DAQ National Instruments ADE Software Optional Equipment Custom Cabling Unpacking Safety Information Page Page Installing and Configuring the NI PCI-6110/6111 Installing the Software Installing the Hardware Configuring the Device National Instruments Corporation 3-1 NI PCI-6110/6111 User Manual Hardware Overview DAQ - STC RTSI Bus Figure 3-1. NI PCI-6110 Block Diagram I/O Connector Analog Input Input Mode Note The inputs are differential only in the sense that the ground loops are broken. The I/O Connector RTSI Bus Input Polarity and Input Range Considerations for Selecting Input Ranges Input Coupling Analog Output Analog Trigger Figure 3-3. Analog Trigger Block Diagram for the NI PCI-6110 Figure 3-4. Analog Trigger Block Diagram for the NI PCI-6111 Page Page Digital I/O Timing Signal Routing Page Programmable Function Inputs Device and RTSI Clocks RTSI Triggers Connecting Signals I/O Connector Figure 4-1. 68-Pin I/O Connector Pin Assignment for the NI PCI-6110/6111 Figure 4-2. 50-Pin Connector Pin Assignments for the NI PCI-61 10/6111 I/O Connector Signal Descriptions Table 4-2. Signal Descriptions for I/O Connector Pins Page Page Table 4-3. I/O Signal Summary for the NI PCI-6110/6111 Table 4-3. I/O Signal Summary for the NI PCI-6110/6111 (Continued) Connecting Analog Input Signals Types of Signal Sources Floating Signal Sources Ground-Referenced Signal Sources Differential Measurements Differential Connection Considerations Differential Connections for Ground-Referenced Signal Sources Figure 4-4. Differential Input Connections for G round-Referenced Signals Differential Connections for Nonreferenced or Floating Signal Sources Common-Mode Signal Rejection Considerations Working Voltage Range Analog Output Signal Connections Digital I/O Signal Connections Power Connections Timing Connections Programmable Function Input Connections DAQ Timing Connections TRIG1 Signal TRIG2 Signal Page STARTSCAN Signal Page CONVERT* Signal AIGATE Signal SISOURCE Signal SCANCLK Signal EXTSTROBE* Signal Waveform Generation Timing Connections WFTRIG Signal UPDATE* Signal UISOURCE Signal General-Purpose Timing Signal Connections GPCTR0_SOURCE Signal GPCTR0_GATE Signal GPCTR0_OUT Signal GPCTR0_UP_DOWN Signal GPCTR1_SOURCE Signal GPCTR1_GATE Signal GPCTR1_OUT Signal GPCTR1_UP_DOWN Signal Page FREQ_OUT Signal Field Wiring Considerations Page Calibration Loading Calibration Constants Self-Calibration External Calibration A Specifications Analog Input Input Characteristics Accuracy Information Transfer Characteristics Amplifier Characteristics Dynamic Characteristics Stability Analog Output Output Characteristics Transfer Characteristics Voltage Output Dynamic Characteristics Stability Digital I/O Timing I/O General-Purpose Up/Down Counter/Timers Frequency Scaler Triggers Analog Trigger Digital Trigger External Input for Digital or Analog Trigger (PFI0/TRIG1) Page Environmental Safety Electromagnetic Compatibility CE Compliance Page Figure B-1. 68-Pin Connector Pin Assignment for the NI PCI-611 0/6111 Figure B-2. 50-Pin Connector Pin Assignment for the NI PCI-611 0/6111 C Common Questions General Information Installing and Configuring Analog Input and Output Timing and Digital I/O Page Page D Technical Support and Professional Services Page Glossary Numbers/Symbols A B C D E F G H I K L M N O P Page R S T U V W Index Symbols Numerics A B C D E F G H I K L M N O Q R S T U V W