National Instruments NI PCI-6110, NI PCI-6111 - page 90

Appendix C Common Questions

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

Do the counter/timer applications that I wrote previously work with

the DAQ-STC?

If you are using NI-DAQ with LabVIEW, some applications that were built

using the CTR VIs still run. However, there are many differences between

the counters of the NI PCI-6110/6111 and those of other devices: the

counter numbers are different, timebase selections are different, and the

DAQ-STC counters are 24-bit counters (unlike the 16-bit counters on

devices without the DAQ-STC).

If you are using NI-DAQ or Measurement Studio, the counter/timer

applications that you wrote previously do not work with the DAQ-STC.

You must use the GPCTR functions because ICTR and CTR functions do

not work with the DAQ-STC. The GPCTR functions have the same

capabilities as the ICTR and CTR functions, plus more, but you must first

rewrite the application using GPCTR function calls.

I’m using one of the general-purpose counter/timers on the

NIPCI -6110/6111, but I do not see the counter/timer output on

theI/O connector. What am I doing wrong?

If you are using NI-DAQ or LabWindows/CVI, you must configure the

output line to output the signal to the I/O connector. Use the

Select_Signal call in NI-DAQ to configure the output line. By default,

all timing I/O lines except EXTSTROBE* are high-impedance.

What are the PFIs and how do I configure these lines?

PFIs are Programmable Function Inputs. These lines serve as connections

to almost all internal timing signals.

If you are using NI-DAQ or LabWindows/CVI, use the Select_Signal

function to route internal signals to the I/O connector, route external signals

to internal timing sources, or tie internal timing signals together.

If you are using NI-DAQ with LabVIEW and you want to connect external

signal sources to the PFI lines, you can use AI Clock Config, AI Trigger

Config, AO Clock Config, AO Trigger and Gate Config, and Counter Set

Attribute advanced-level VIs to indicate which function the connected

signal serves. Use the Route Signal VI to enable the PFI lines to output

internal signals.

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