National Instruments 6023E, 6024E, 6025E

Chapter4 SignalConnections

©NationalInstruments Corporation 4-37 6023E/6024E/6025EUser Manual

deassertedtoff after the last conversion in the scan is initiated. This output is

setto high impedance at startup.

Figures 4-25 and 4-26 showthe input and outp ut timing requirements for

the STARTSCANsignal.

Figure4-25. STARTSCANInput Signal Timing

Figure4-26. STARTSCANOutput Signal Timing

The CONVERT*pulses are masked off until the device generates the

STARTSCANsignal.If you are using internally g enerated conversions,the

firstCONVERT* appears when the onboard sample interval counter

reacheszero. If you select an external CONVERT*, the first external pulse

afterSTARTSCAN generates a conversion. Separate theSTARTSCAN

pulses byat least one scan period.

Rising-Edge

Polarity

Falling-Edge

Polarity

tw=10 ns minimum

tw=50-100 ns

a. Start of Scan

toff

toff= 10 ns minimum

StartPulse

CONVERT*

STARTSCAN

b. Scan in Progress, Two Conversions per Scan

Contents

Main Page Important Information Warranty Copyright Trademarks WARNINGREGARDING USE OF NATIONAL INSTRUMENTS PRODUCTS Contents Chapter 4 Signal Connections Page Figures Tables About This Manual Conventions Used in This Manual Related Documentation Introduction Features of the 6023E, 6024E, and 6025E Using PXI with CompactPCI What You Need to Get Started Software Programming Choices National Instruments Application Software NI-DAQ Driver Software Optional Equipment Page Installation and Configuration Software Installation Unpacking Hardware Installation Hardware Configuration NationalInstruments Corporation 3-1 6023E/6024E/6025EUser Manual Hardware Overview DAQ- STC PCI Connector for PCI-602X, PXI Connector for PXI-6025E Figure3-1. PCI-6023E, PCI-6024E, PCI-6025E, and PXI-6025E Block Diagram I/O Connector Analog Input Input Mode DAQ-PCMCIA DAC0 DAC1 Input Range Dithering Chapter3 HardwareOverview NationalInstruments Corporation 3-5 6023E/6024E/6025EUser Manual Figure3-3. Dithering Multichannel Scanning Considerations a. Dither disabled; no averaging b. Dither disabled; average of 50 acquisitions c. Dither enabled; no averaging d. Dither enabled; average of 50 acquisitions a. Dither disabled; no averaging b. Dither disabled; average of 50 acquisitions Analog Output Analog Output Glitch Digital I/O Timing Signal Routing Programmable Function Inputs Device and RTSI Clocks RTSI Triggers Figure3-5. PCIRTSI Bus Signal Connection Page Signal Connections I/O Connector assignmentsof the optional 50- and68-pin connectors. A signal description follows the figures. Figure4-1. I/O Connector Pin Assignment for the 6023E/6024E Chapter4 SignalConnections Figure4-2. I/OConnector Pin Assignment for the 6025E NationalInstruments Corporation 4-3 6023E/6024E/6025EUser Manual Table4-2 shows the I/O connector signal descriptions for the 6023E, 6024E, and 6025E. Table4-2. I/OConnector Signal Descriptions Table4-2. I/OConnector Signal Descriptions (Continued) Table4-2. I/O Connector Signal Descriptions (Continued) Table4-3 shows the I/O signal summary for the 6023E, 6024E, and 6025E. Table4-3. I/OSignal Summary Analog Input Signal Overview Types of Signal Sources Floating Signal Sources Ground-Referenced Signal Sources Analog Input Modes - Analog Input Signal Connections Chapter4 SignalConnections Figure4-4. Summary of Analog Input Connections 6023E/6024E/6025EUser Manual 4-12 ni.com Differential Connection Considerations (DIFF Input Configuration) Differential Connections for Ground-Referenced Signal Sources Figure4-5. DifferentialInput Connections for Ground-Referenced Signals Differential Connections for Nonreferenced or Floating Signal Sources Figure 4-6 shows how to connect a floating signal source to a channel configured in DIFF input mode. Figure4-6. DifferentialInput Connections for Nonreferenced Signals Page Single-Ended Connection Considerations Single-Ended Connections for Floating Signal Sources (RSE Configuration) Single-Ended Connections for Grounded Signal Sources (NRSE Configuration) Common-Mode Signal Rejection Considerations Analog Output Signal Connections Digital I/O Signal Connections All Devices Page Programmable Peripheral Interface (PPI) Port C Pin Assignments Power-up State Changing DIO Power-up State to Pulled Low Timing Specifications Page Mode 1 Input Timing Mode 1 Output Timing Mode 2 Bidirectional Timing Power Connections Timing Connections Programmable Function Input Connections DAQ Timing Connections SCANCLK Signal EXTSTROBE* Signal TRIG1 Signal TRIG2 Signal STARTSCANSignal Page CONVERT* Signal AIGATESignal SISOURCE Signal Waveform Generation Timing Connections WFTRIGSignal 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 Calibration Loading Calibration Constants Self-Calibration External Calibration Other Considerations A Specifications PCI and PXI Buses Analog Input Input Characteristics Page Amplifier Characteristics Analog Output Output Characteristics Page Voltage Output Digital I/O DIO<0..7> PA<0..7>,PB<0..7>,PC<0..7> Timing I/O Page Operating Environment Storage Environment PCMCIA Bus Analog Input Input Characteristics Page Amplifier Characteristics Analog Output Output Characteristics Voltage Output Digital I/O DIO<0..7> Timing I/O Triggers Digital Trigger Calibration Power Requirement Page B Custom Cabling and Optional Connectors Custom Cabling Optional Connectors Figure B-1 showsthe pin assignments for the 68-Pin E Series connector. FigureB-1. 68-Pin E Series Connector Pin Assignments Figure B-2 showsthe pin assignmen tsf ort he 68-pin extendeddigi tal input connector. FigureB-2. 68-PinExtended Digital Input Connector Pin Assignments Figure B-3 showsthe pin assignments for the 50-pin E Series connector. ACH8 ACH9 ACH10 ACH11 Figure B-4 showsthe pin assignmen tsf ort he 50-pin extendeddigi tal input connector. FigureB-4. 50-PinExtended Digital Input Connector Pin Assignments C Common Questions General Information Installation and Configuration Analog Input and Output Timing and Digital I/O Page Page D Technical Support Resources Web Support NI Developer Zone Customer Education System Integration Worldwide Support Glossary Numbers/Symbols A B C D E F G H I K L M N O P Q R S T U V Page Index Numbers A B C D E F G H I L M N O P Q R S Page T U V W