Measurement Computing Data Translation DT3034 User Manual
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Measurement Computing Data Translation DT3034 User Manual

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  • Page 1 sales@artisantg.com artisantg.com (217) 352-9330 | Visit our website - Click HERE...
  • Page 2 Title Page UM-22359-M DT3034 User’s Manual...
  • Page 3 Other product and company names mentioned herein are trademarks or trade names of their respective compa © 2011 Measurement Computing Corporation. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form by any means, electronic, mechanical, by photocopying, recording, or otherwise without the prior written permission of Measurement Computing Corporation.
  • Page 4 Page Radio and Television Interference This equipment has been tested and found to comply with CISPR EN55022 Class A and EN61000-6-1 requirements and also with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment.

  • Page 6: Table Of Contents

    Table of Contents Table of Contents About this Manual ........... . . 11 Intended Audience.
  • Page 7 Contents Connecting Differential Voltage Inputs ........46 Connecting Current Loop Inputs .
  • Page 8 Contents Analog Threshold Trigger ......... . . 80 Trigger Acquisition Modes .
  • Page 9 Contents Repetitive One-Shot ..........107 Synchronizing A/D and D/A Subsystems .
  • Page 10 Contents Appendix A: Specifications ..........141 Analog Input Specifications .
  • Page 11 Contents...

  • Page 12: About This Manual

    About this Manual This manual describes how to set up and install the following components: • DT3034 software • DT3034 board • DT3034 Device Driver • DT740 screw terminal panel It describes how to wire signals to the board and how to verify the board’s operation using the Quick DataAcq application.

  • Page 13: Conventions Used In This Manual

    About this Manual • Chapter “Verifying the Operation of a DT3034 Board,” describes how to verify the operation of a DT3034 board with the Quick DataAcq application • Chapter “Principles of Operation,” describes all of the board’s features and how to use them in your application.

  • Page 14: Where To Get Help

    About this Manual • DTx-EZ Getting Started Manual (UM-15428). This manual, available from Data Translation, describes how to use the ActiveX controls provided in DTx-EZ to access the capabilities of Data Translation data acquisition boards in Microsoft® Visual Basic or Visual C++. •...
  • Page 15 About this Manual...

  • Page 16: Chapter 1: Overview

    Overview Features ..............Supported Software .

  • Page 17: Features

    Chapter 1 Features Table 1 lists the key features of the DT3034 board. Table 1: Key Features of the DT3034 Board Feature Specification Analog Input Channels 32 single-ended or 16 differential Analog I/O Resolution 16-bits A/D Throughput 500 kSamples/s Analog Output Channels D/A Throughput 200 kSamples/s Output FIFO...
  • Page 18 Overview • Two dynamic, high-speed digital output lines; useful for synchronizing and controlling external equipment, these dynamic digital output lines are programmable as part of the analog input subsystem using the DataAcq SDK • Programmable gate types • Programmable pulse output polarities (output types) and duty cycles •...

  • Page 19: Supported Software

    Chapter 1 Supported Software The following software is available for use with the DT3034 boards and on the Data Acquisition OMNI CD: • DT3034 Device Driver – The device driver is installed automatically when you install the software from the Data Acquisition OMNI CD. You need the device driver to use the DT3034 board with any of the supported software packages or utilities.

  • Page 20: Accessories

    Overview Accessories The following optional accessories are available for a DT3034 board: • DT740 screw terminal panel – Screw terminal panel with two connectors to accommodate the analog I/O, digital I/O, and counter/timer signals provided by the DT3034 board. • EP307 cable – A 1-meter, twisted-pair, shielded cable that connects the 50-pin analog I/O connector (J1) on the DT3034 board to the J1 connector on the DT740 screw terminal panel.

  • Page 21: Getting Started Procedure

    Chapter 1 Getting Started Procedure The flow diagram shown in Figure 1 illustrates the steps needed to get started using a DT3034 board. This diagram is repeated in each getting started chapter; the shaded area in the diagram shows you where you are in the getting started procedure. Install the Board and Load the Device Driver (see Chapter 2...

  • Page 22: Part 1: Getting Started

    Part 1: Getting Started...

  • Page 24: Chapter 2: Installing The Board And Loading The Device Driver

    Installing the Board and Loading the Device Driver Unpacking ..............Setting up the Computer .
  • Page 25 Chapter 2 Install the Board and Load the Device Driver (this chapter) Attach and Configure the Screw Terminal Panel (see Chapter 3 starting on page Wire Signals (see Chapter 4 starting on page Verify the Operation of the Board (see Chapter 5 starting on page...

  • Page 26: Unpacking

    Installing the Board and Loading the Device Driver Unpacking Open the shipping box and remove the wrapped DT3034 board. CAUTION: Keep the board in its protective antistatic bag until you are ready to install it; this minimizes the likelihood of electrostatic damage. Verify that the following items are present: •...

  • Page 27: Setting Up The Computer

    Chapter 2 Setting up the Computer CAUTION: To prevent electrostatic damage that can occur when handling electronic equipment, use a ground strap or similar device when performing this installation procedure. To set up the computer, do the following: 1. Install the software from the Data Acquisition OMNI CD or Data Translation web site. Note: If you are using Windows 7, you must install the device driver before installing the board in the computer.

  • Page 28: Setting Up Expansion Slots

    Installing the Board and Loading the Device Driver Setting up Expansion Slots Once you have set up the computer, set up the expansion slots as follows: 1. Select a 32-bit or 64-bit PCI expansion slot. PCI slots are shorter than ISA or EISA slots and are usually white or ivory. Commonly, three PCI slots (one of which may be a shared ISA/PCI slot) are available.

  • Page 29: Removing The Board For Handling

    Chapter 2 Removing the Board for Handling To remove the board for handling, follow these steps: 1. Discharge any static electricity by holding the wrapped board in one hand while placing your other hand firmly on a metal portion of the computer chassis. 2.

  • Page 30: Inserting The Dt3034 Board Into The Computer

    Installing the Board and Loading the Device Driver Inserting the DT3034 Board into the Computer Once you have set up the expansion slots, do the following to insert the DT3034 board into the computer: 1. Position the board so that the cable connectors are facing the rear of the computer, as shown in Figure Rear of Computer...

  • Page 31: Loading The Device Driver

    Chapter 2 Loading the Device Driver To load the DT3034 device driver in: • Windows XP, follow the steps on page • Windows Vista, follow the steps on page • Windows 7, follow the steps on page Windows XP Once you have installed the software from the Data Acquisition OMNI CD, installed a DT3034 board, and powered up the host computer, the New Hardware Found dialog box appears.

  • Page 32: Windows Vista

    Installing the Board and Loading the Device Driver Windows Vista Once you have installed the software from the Data Acquisition OMNI CD, installed a DT3034 board, and powered up the host computer, the New Hardware Found dialog box appears. Do the following to load the device driver in Windows Vista: 1.
  • Page 33 Chapter 2...

  • Page 34: Chapter 3: Attaching And Configuring A Screw Terminal Panel

    Attaching and Configuring a Screw Terminal Panel Attaching the DT740 Screw Terminal Panel ........Configuring the DT740 Screw Terminal Panel.
  • Page 35 Chapter 3 Install the Board and Load the Device Driver (see Chapter 2 starting on page Attach and Configure the Screw Terminal Panel (this chapter) Wire Signals (see Chapter 4 starting on page Verify the Operation of the Board (see Chapter 5 starting on page...

  • Page 36: Attaching The Dt740 Screw Terminal Panel

    Attaching and Configuring a Screw Terminal Panel Attaching the DT740 Screw Terminal Panel If you are using the DT3034 board, you first need to attach the DT740 screw terminal panel to the board before you can wire signals. Connector J1 on the screw terminal panel brings out all of the analog signals from connector J1 on the board;...

  • Page 37: Configuring The Dt740 Screw Terminal Panel

    Chapter 3 Configuring the DT740 Screw Terminal Panel This section describes how to locate and configure the jumpers and resistors on the DT740 screw terminal panel for use with a DT3034 board. Figure 4 shows the layout of the DT740 screw terminal panel, and shows the location of the jumper and resistors.

  • Page 38: Configuring Resistors R1 To R16 - Bias Return

    Attaching and Configuring a Screw Terminal Panel Configuring Resistors R1 to R16 - Bias Return Resistor locations R1 to R16 connect the low side of analog input channels to analog ground. These resistor locations are typically used when connecting differential inputs to analog input channels 0 to 15, where R1 corresponds to analog input channel 0, and R16 corresponds to analog input channel 15.
  • Page 39 Chapter 3...

  • Page 40: Chapter 4: Wiring Signals

    Wiring Signals Preparing to Wire to a Screw Terminal Panel........Screw Terminal Assignments .
  • Page 41 Chapter 4 Install the Board and Load the Device Driver (see Chapter 2 starting on page Attach and Configure the Screw Terminal Panel (see Chapter 3 starting on page Wire Signals (this chapter) Verify the Operation of the Board (see Chapter 5 starting on page...

  • Page 42: Preparing To Wire To A Screw Terminal Panel

    Wiring Signals Preparing to Wire to a Screw Terminal Panel This section describes wiring recommendations when connecting signals to a DT3034 board and screw terminal panel. Wiring Recommendations • Follow standard ESD procedures when wiring signals to the board. • Use individually shielded twisted-pair wire (size 14 to 26 AWG) when using a DT3034 board in highly noisy electrical environments.

  • Page 43: Screw Terminal Assignments

    Chapter 4 Screw Terminal Assignments Screw terminals TB1 to TB56 on the DT740 screw terminal panel correspond to the analog I/O channels from the DT3034 board. Screw terminals TB57 to TB112 on the DT740 screw terminal panel correspond to the digital I/O signals from the DT3034 board. Screw terminals TB37 (+15 V) and TB39 (15 V) on the DT740 screw terminal panel are available for low-current signal conditioning applications.
  • Page 44 Wiring Signals Table 2: Screw Terminal Assignments for Connector J1 on the DT740 Screw Terminal Panel J1 Pin Signal Description J1 Pin Signal Description Analog Input 00 Analog Input 08/00 Return Analog Input 01 Analog Input 09/01 Return Analog Input 02 Analog Input 10/02 Return Analog Input 03 Analog Input 11/03 Return...
  • Page 45 Chapter 4 Table 3: Screw Terminal Assignments for Connector J2 on the DT740 Screw Terminal Panel J2 Pin Signal Description J2 Pin SIgnal Description 51, 52 Digital Ground User Clock Input 0 User Counter Output 0 External Gate 0 Digital Ground User Clock Input 1 User Counter Output 1 External Gate 1...

  • Page 46: Connecting Analog Input Signals

    Wiring Signals Connecting Analog Input Signals The DT740 screw terminal panel supports both voltage and current loop inputs. You can connect analog input voltage signals to the screw terminal panels in the following configurations: • Single-ended – Choose this configuration when you want to measure high-level signals, noise is not significant, the source of the input is close to the screw terminal panel, and all the input signals are referred to the same common ground.

  • Page 47: Connecting Pseudo-Differential Voltage Inputs

    Chapter 4 Connecting Pseudo-Differential Voltage Inputs Figure 6 shows how to connect pseudo-differential voltage inputs to the DT740 screw terminal panel. DT740 Panel Signal Source  TB33 Vsource Analog In 0 TB34 Analog In 1  Vsource Remove Jumper W1 to use Amp Low as a remote ground sense.
  • Page 48 Wiring Signals Analog In 0 TB34 DT740 Panel Floating Signal Analog In 0 Source Return  You can use resistor R1 to connect the low side of Analog Ground channel 0 to analog ground. Bridge Analog In 0 TB34 DT740 Panel Analog In 0 Return...
  • Page 49 Chapter 4 DT740 Panel Analog In 0 TB34 Grounded Signal Analog In 0 Source Return  Signal Source Ground V Analog Ground Resistor R1 should be installed for bias return in case the external ground is floating. Figure 8: Connecting Differential Voltage Inputs from a Grounded Signal Source to the DT740 (Shown for Channel 0)

  • Page 50: Connecting Current Loop Inputs

    Wiring Signals Connecting Current Loop Inputs Figure 9 shows how to connect a current loop input to the DT740 screw terminal panel. DT740 Panel 4 to 20 mA Analog Input 0 TB50 TB51 Analog Input 0 Return Analog Ground Analog Shield Use current shunt resistor R17 to convert current ...

  • Page 51: Connecting Analog Output Signals

    Chapter 4 Connecting Analog Output Signals Figure 10 shows how to connect analog output voltage signals to the DT740 screw terminal panel. DT740 Panel Analog Output 0 TB41 TB42 Load TB51 Analog Output 0 Return Analog Shield Figure 10: Connecting Analog Output Voltages to the DT740 (Shown for Channel 0)

  • Page 52: Connecting Digital I/O Signals

    Wiring Signals Connecting Digital I/O Signals Figure 11 shows how to connect digital input signals to the DT740 screw terminal panel. DT740 Panel Digital I/O Bank A 0 TB89 TB90 TTL Inputs Digital I/O Bank A 1 TB105 Digital Shield Figure 11: Connecting Digital Inputs to the DT740 (Shown for Lines 0 and 1, Bank A) Figure 12...

  • Page 53: Connecting Counter/Timer Signals

    Chapter 4 Connecting Counter/Timer Signals The DT3034 board with the DT740 screw terminal panel provides counter/timers that you can use for the following operations: • Event counting • Frequency measurement • Pulse output (rate generation, one-shot, and repetitive one-shot) This section describes how to connect counter/timer signals to perform these operations. Refer to page 96 for more information on using the counter/timers.
  • Page 54 Wiring Signals User Clock Input 0 TB58 TB60 Signal Source TB61 TB83 Digital Ground DT740 Panel TB108 Digital Shield In this example, a software gate is used to start the event counting operation. Figure 14: Connecting Event Counting Applications to the DT740 (Shown for Clock Input 0 without an External Gate) User Counter...

  • Page 55: Connecting Frequency Measurement Signals

    Chapter 4 Connecting Frequency Measurement Signals One way to measure frequency is to connect a pulse of a known duration (such as a one-shot output of another user counter) to the external gate input, as shown in Figure 16. In this configuration, the frequency of the clock input is the number of counts divided by the period of the external gate input.

  • Page 56: Connecting Pulse Output Signals

    Wiring Signals Connecting Pulse Output Signals Figure Figure 18, and Figure 19 show examples of connecting pulse output applications to the DT740 screw terminal panel. Other combinations of signals can be used. User Counter Output 0 TB59 TB60 Heater TB61 Controller Digital Ground TB83...
  • Page 57 Chapter 4 User Digital Ground TB57 Counter TB58 Output 0 User Clock Input 0 TB59 TB60 Signal Source TB61 TB62 User Clock Input 1 External DT740 Panel Gating Switch Gate 0 Digital Ground TB108 Digital Shield Note that you can also internally cascade counters using software;...
  • Page 58 Verifyin g the Operation of a DT3034 Board Running the Quick DataAcq Application......... Testing Single-Value Analog Input .
  • Page 59 Chapter 5 Install the Board and Load the Device Driver (see Chapter 2 starting on page Attach and Configure the Screw Terminal Panel (see Chapter 3 starting on page Wire Signals (see Chapter 4 starting on page Verify the Operation of the Board (this chapter) You can verify the operation of a DT3034 board using the Quick DataAcq application.

  • Page 60: Chapter 5: Verifying The Operation Of A Dt3034 Board

    Verifying the Operation of a DT3034 Board Running the Quick DataAcq Application The Quick DataAcq application is installed automatically when you install the driver software. To run the Quick DataAcq application, do the following: 1. If you have not already done so, power up your computer and any attached peripherals. 2.

  • Page 61: Testing Single-Value Analog Input

    Chapter 5 Testing Single-Value Analog Input To verify that the board can read a single analog input value, do the following: 1. Connect a voltage source, such as a function generator, to analog input channel 0 (differential mode) on the DT3034 board. Refer to page 46 for an example of how to connect a differential analog input.

  • Page 62: Testing Single-Value Analog Output

    Verifying the Operation of a DT3034 Board Testing Single-Value Analog Output To verify that the board can output a single analog output value, do the following: 1. Connect an oscilloscope or voltmeter to DAC0 on the board. Refer to page 50 for an example of how to connect analog output signals.

  • Page 63: Testing Continuous Analog Input

    Chapter 5 Testing Continuous Analog Input To verify that the board can perform a continuous analog input operation, do the following: 1. Connect known voltage sources, such as the outputs of a function generator, to analog input channels 0 and 1 on the DT3034 board (using the differential configuration). Refer to page 46 for an example of how to connect a differential analog input.

  • Page 64: Testing Single-Value Digital Input

    Verifying the Operation of a DT3034 Board Testing Single-Value Digital Input To verify that the board can read a single digital input value, do the following: 1. Connect a digital input to digital input line 0 of port A on the DT3034 board. Refer to page for an example of how to connect a digital input.

  • Page 65: Testing Single-Value Digital Output

    Chapter 5 Testing Single-Value Digital Output To verify that the board can output a single digital output value, do the following: 1. Connect a digital output to digital output line 0 of port B on the DT3034 board. Refer to page 51 for an example of how to connect a digital output.

  • Page 66: Testing Frequency Measurement

    Verifying the Operation of a DT3034 Board Testing Frequency Measurement To verify that the board can perform a frequency measurement operation, do the following: 1. Wire an external clock source to counter/timer 0 on the DT3034 board. Refer to page 54 for an example of how to connect a an external clock for a frequency measurement operation.

  • Page 67: Testing Pulse Output

    Chapter 5 Testing Pulse Output To verify that the board can perform a pulse output operation, do the following: 1. Connect a scope to counter/timer 0 on the DT3034 board. Refer to page 55 for an example of how to connect a scope (a pulse output) to counter/timer 0. Note: The Quick DataAcq application works only with counter/timer 0.

  • Page 68: Part 2: Using Your Board

    Part 2: Using Your Board...

  • Page 70: Chapter 6: Principles Of Operation

    Principles of Operation Analog Input Features ............Analog Output Features .
  • Page 71 Chapter 6 This chapter describes the analog input, analog output, digital I/O, counter/timer, and synchronous features of the DT3034 board. To frame the discussions, refer to the block diagram shown in Figure 20. Note that bold entries indicate signals you can access. A/D Trig A/D Trig Out Trigger/Clock...

  • Page 72: Analog Input Features

    Principles of Operation Analog Input Features This section describes the features of the analog input (A/D) subsystem, including the following: • Analog input resolution • Analog input channels • Input ranges and gains • A/D sample clock sources • Analog input conversion modes •...

  • Page 73: Specifying One Or More Channels

    Chapter 6 Specifying One or More Channels DT3034 boards can read data from one or more analog input channels using an analog input channel list. You can group the channels in the list sequentially (either starting with 0 or with any other analog input channel), or randomly.
  • Page 74 Principles of Operation Two dynamic digital output lines are provided: 0 and 1. These lines are set to a value of 0 on power up; a reset does not affect the values of the dynamic digital output lines. Note that these lines are provided in addition to the other 16 digital I/O lines;...

  • Page 75: Input Ranges And Gains

    Chapter 6 Input Ranges and Gains Each channel on the DT3034 board can measure unipolar and bipolar analog input signals. A unipolar signal is always positive (0 to 10 V on DT3034 boards), while a bipolar signal extends between the negative and positive peak values (±10 V on DT3034 boards). Through software, specify the range as 0 to 10 V for unipolar signals or10 V to +10 V for bipolar signals.

  • Page 76: Internal A/D Sample Clock

    Principles of Operation The A/D sample clock paces the acquisition of each channel in the channel list; this clock is also called the A/D pacer clock. Note: If you enter digital I/O channel 32 in the channel list, the A/D sample clock (internal or external) also paces the acquisition of the 16 digital input lines.

  • Page 77: Analog Input Conversion Modes

    Chapter 6 Analog Input Conversion Modes DT3034 boards support the following conversion modes: • Single-value operations are the simplest to use but offer the least flexibility and efficiency. Use software to specify the range, gain, and analog input channel (among other parameters);...

  • Page 78: Triggered Scan Mode

    Principles of Operation Note: An A/D Trigger Out signal is provided for your use. This signal is high when the A/D subsystem is waiting for a trigger and low when a trigger occurs. In continuously-paced scan mode, this signal goes low when the trigger occurs and stays low until you stop the operation.

  • Page 79: Externally-Retriggered Scan Mode

    Chapter 6 To select software-retriggered scan mode, use software to specify the following parameters: • The dataflow as Continuous, ContinuousPreTrigger, or ContinuousPrePostTrigger, • Triggered scan mode usage as enabled. • The retrigger source as Software. • The number of times to scan per trigger or retrigger (also called the multiscan count). •...

  • Page 80: Triggers

    Principles of Operation To select externally-retriggered scan mode, use software to specify the following parameters: • The dataflow as Continuous. • Triggered scan mode as enabled. • The retrigger source as an external digital (TTL) trigger. • The number of times to scan per trigger or retrigger (also called the multiscan count). Note: If you are using an external trigger source as the initial trigger and want to retrigger externally, specify the same trigger source as the retrigger.

  • Page 81: External Digital (Ttl) Trigger

    Chapter 6 External Digital (TTL) Trigger For analog input operations, an external digital trigger event occurs when the DT3034 board detects either a rising or falling edge on the External A/D TTL Trigger input signal connected to screw terminal 77 on the DT740 screw terminal panel. The trigger signal is TTL-compatible. Using software, specify the trigger source as an external, positive digital (TTL) trigger for a rising-edge digital trigger (OL_TRG_EXTERN for DataAcq SDK users) or an external, negative digital (TTL) trigger for a falling-edge digital trigger (OL_TRG_EXTRA for DataAcq...
  • Page 82 Principles of Operation Trigger Acquisition Modes DT3034 boards can acquire data in post-trigger mode, pre-trigger mode, or about-trigger mode. These trigger acquisition modes are described in more detail in the following subsections. Post-Trigger Acquisition Use post-trigger acquisition mode when you want to acquire data when a post-trigger or retrigger, if using triggered scan mode, occurs.
  • Page 83 Chapter 6 Figure 23 illustrates the same example using triggered scan mode (either a software or external retrigger source). The multiscan count is 2 indicating that the channel list will be scanned twice per trigger or retrigger. In this example, post-trigger analog input data is acquired on each clock pulse of the A/D sample clock until the channel list has been scanned twice;...
  • Page 84 Principles of Operation If you are using software-retriggered scan mode and the post-trigger event has not occurred, the board continues to acquire pre-trigger data using the Triggered Scan Counter to clock the operation. When the post-trigger event occurs, the operation stops. Refer to page 77 for more information on software-retriggered scan mode.
  • Page 85 Chapter 6 About-Trigger Acquisition Use about-trigger acquisition mode when you want to acquire data both before and after a specific external event occurs. This operation is equivalent to doing both a pre-trigger and a post-trigger acquisition. Using software, specify the following parameters: •...
  • Page 86 Principles of Operation Chan 0 Chan 0 Chan 0 Chan 0 Chan 0 Chan 0 Chan 1 Chan 1 Chan 1 Chan 1 Chan 1 Chan 1 . . . Sample Clock Pre-trigger data acquired Post-trigger data acquired Pre-trigger event occurs Post-trigger event occurs Figure 26: Continuous About-Trigger Mode Figure 27...
  • Page 87 Chapter 6 Using flags internally, the board determines whether the acquired samples are pre-trigger or post-trigger samples. These flags are not transferred to the host computer. The host computer can read the register on the board to determine where the post-trigger data starts. Note that the host computer cannot read data directly from the board;...
  • Page 88 Principles of Operation Analog Output Features Two analog output (D/A) subsystems are provided on DT3034 boards. The first D/A subsystem contains the majority of analog output features. The second is dedicated to threshold triggering only (refer to page 89 for more information on analog threshold triggering).
  • Page 89 Chapter 6 Specifying One or More Channels You can specify one or two analog output channels in the analog output channel list, either starting with DAC 0 or with DAC 1. Values are output simultaneously to the entries in the channel list. Output Ranges and Gains Each DAC on the DT3034 board can output bipolar analog output signals in the range of ±10 V.
  • Page 90 Principles of Operation Connect an external D/A output clock to screw terminal 74 on the DT740 screw terminal panel. Conversions start on the falling edge of the external D/A output clock signal. Using software, specify the clock source as external. For DT3034 boards, the clock frequency is always equal to the frequency of the external D/A output clock input signal that you connect to the board through the screw terminal panel.
  • Page 91 Chapter 6 • One of the analog input channels after gain is applied. Using software, specify the trigger source as either a positive threshold trigger or a negative threshold trigger. Using software, specify the analog input channel used as the analog threshold trigger as the first channel in the analog input channel list;...
  • Page 92 Principles of Operation When it detects a trigger, the board outputs the values in the output FIFO to the DACs at the same time. Even samples (0, 2, 4, and so on) are written to entry 0 in the channel list; odd samples (1, 3, 5, and so on) are written to entry 1 in the channel list.
  • Page 93 Chapter 6 The conversion rate is determined by the frequency of the D/A output clock. The maximum throughput rate in this mode is 500 kHz (500 kSamples/s) in 100 mV steps or 200 kHz (200 kSamples/s) in full-scale steps. Refer to page 88 for more information on the D/A output clock.
  • Page 94 Principles of Operation Error Conditions DT3034 boards can report an output FIFO underflow error to the host computer. This error indicates that the analog output data was not being transferred fast enough across the PCI bus from the host computer to the output FIFO on the board. If the D/A output clock occurs while the output FIFO is empty, an error is not reported since the most likely cause is that the host computer has no more data to output;...
  • Page 95 Chapter 6 Digital I/O Features This section describes the following features of the digital I/O subsystem: • Digital I/O lines • Digital I/O resolution • Digital I/O operation modes Digital I/O Lines DT3034 boards support 16 digital I/O lines through the digital input (DIN) and output (DOUT) subsystems;...
  • Page 96 Principles of Operation • Continuous digital input takes full advantage of the capabilities of the DT3034 boards. In this mode, you enter all 16 digital input lines as channel 32 of the analog input channel list using software. This mode is programmed through the A/D subsystem. Using this mode, you can specify a clock source, scan mode, trigger source, trigger acquisition mode, and buffer for the digital input operation.
  • Page 97 Chapter 6 Counter/Timer Features The counter/timer circuitry on the board provides the clocking circuitry used by the A/D and D/A subsystems as well as several user counter/timer features. This section describes the following user counter/timer features: • Units • C/T clock sources •...
  • Page 98 Principles of Operation Internal C/T Clock The internal C/T clock uses a 20 MHz time base. Counter/timer operations start on the rising edge of the clock input signal. Through software, specify the clock source as internal and the frequency at which to pace the counter/timer operation (this is the frequency of the clock output signal).
  • Page 99 Chapter 6 Through software, specify the clock source as internal and the frequency at which to pace the counter/timer operation (this is the frequency of the clock output signal). The maximum frequency that you can specify for the clock output signal is 10 MHz. For a 32-bit cascaded counter, the minimum frequency that you can specify for the clock output signal is 0.00465 Hz, which corresponds to a rate of once every 215 seconds.
  • Page 100 Principles of Operation Table 6: Gate Input Signals Counter/Timer Screw Terminal on the DT740 TB60 TB64 TB68 TB72 Pulse Output Types and Duty Cycles DT3034 boards can output pulses from each counter/timer. Table 7 lists the screw terminals that correspond to the pulse output signals of each counter/timer. Table 7: Pulse Output Signals Counter/Timer Screw Terminal on the DT740...
  • Page 101 Chapter 6 Active Pulse Width high pulse low pulse Total Pulse Period Figure 29: Example of a Low-to-High Pulse Output Type Counter/Timer Operation Modes DT3034 boards support the following counter/timer operation modes: • Event counting • Frequency measurement • Rate generation •...
  • Page 102 Principles of Operation DT740 Screw Terminal User Clock Input 0 TB58 TB60 Signal Source TB61 TB83 Digital Ground External Gating Switch Gate 0 Digital Ground TB108 Digital Shield Figure 30: Connecting Event Counting Signals (Shown for Clock Input 0 and External Gate 0) Figure 31 shows an example of an event counting operation.
  • Page 103 Chapter 6 Frequency Measurement Use frequency measurement mode to measure the frequency of the signal from counter’s associated clock input source over a specified duration. In this mode, use an external C/T clock source; refer to page 96 for more information on the external C/T clock source. Connect a pulse of a known duration (such as a one-shot output of another user counter) to the external gate input, as shown in Figure...
  • Page 104 Principles of Operation Figure 33 shows an example of a frequency measurement operation. In this example, three events are counted during a duration of 300 ms. The frequency, then, is 10 Hz, since 10 Hz = 3/(.3 s). 3 Events Counted External C/T Clock Input Signal...
  • Page 105 Chapter 6 DT740 Screw Terminal Panel User Counter Input 0 User Counter Output 0 TB59 Heater TB61 Controller Digital Ground TB83 Signal Source Digital Ground Figure 34: Connecting Rate Generation Signals (Shown for Counter Output 0; a Software Gate is Used) Figure 35 shows an example of an enabled rate generation operation using an external C/T clock source with an input frequency of 4 kHz, a clock divider of 4, a low-to-high pulse type,...
  • Page 106 Principles of Operation Continuous Pulse Output Operation Starts External C/T Clock Input Signal (4 kHz) Pulse Output 25% duty cycle Signal Figure 36: Example of Rate Generation Mode with a 25% Duty Cycle One-Shot Use one-shot mode to generate a single pulse output signal from the counter when the operation is triggered (determined by the gate input signal).
  • Page 107 Chapter 6 DT740 Screw Terminal Panel User Counter Output 0 TB59 TB60 Heater TB61 Controller Digital Ground TB83 External Gating Switch Gate 0 Digital Ground Figure 37: Connecting One-Shot Signals (Shown for Counter Output 0 and Gate 0) Figure 38 shows an example of a one-shot operation using an external gate input (rising edge), a clock output frequency of 1 kHz (pulse period of 1 ms), and a low-to-high pulse type.
  • Page 108 Principles of Operation Repetitive One-Shot Use repetitive one-shot mode to generate a pulse output signal each time the board detects a trigger (determined by the gate input signal). You can use this mode to clean up a poor clock input signal by changing its pulse width, then outputting it. In repetitive one-shot mode, the internal C/T clock source is more useful than an external C/T clock source;...
  • Page 109 Chapter 6 Synchronizing A/D and D/A Subsystems You can synchronize the operation of the A/D and D/A subsystems providing that they are not performing single-value operations. Refer to page 76 page 90 for more information on single-value operations. You can synchronize the A/D and D/A subsystems in two ways: by synchronizing the triggers and by synchronizing the clocks.
  • Page 110 Principles of Operation Synchronizing the Clocks You can synchronize the clocks of the A/D and D/A subsystems as follows: • Internal Sample Clocks – Using software, specify the clock source as the internal A/D sample clock for the A/D subsystem and the internal D/A output clock for the D/A subsystem.
  • Page 111 Chapter 6...
  • Page 112 Supported Device Driver Capabilities Data Flow and Operation Options..........Buffering .
  • Page 113 Chapter 7 The DT3034 Device Driver provides support for the analog input (A/D), analog output (D/A), digital input (DIN), digital output (DOUT), and counter/timer (C/T) subsystems. For information on how to configure the device driver, refer to page Table 8: DT3034 Subsystems DT3034 DOUT QUAD...

  • Page 114: Supported Device Driver Capabilities

    Supported Device Driver Capabilities Data Flow and Operation Options Table 9: DT3034 Data Flow and Operation Options DT3034 DOUT QUAD Single-Value Operation Support SupportsSingleValue Simultaneous Single-Value Output Operations SupportsSetSingleValues Continuous Operation Support SupportsContinuous Continuous Operation until Trigger SupportsContinuousPreTrigger Continuous Operation before & after Trigger SupportsContinuousPrePostTrigger Waveform Operations Using FIFO Only SupportsWaveformModeOnly...

  • Page 115: Buffering

    Chapter 7 Buffering Table 10: DT3034 Buffering Options DT3034 DOUT QUAD Buffer Support SupportsBuffering Single Buffer Wrap Mode Support SupportsWrapSingle Inprocess Buffer Flush Support SupportsInProcessFlush a. The data from the DT3034 board is transferred to the host in 64 byte segments; therefore, the number of valid samples that can be moved is always a multiple of 64.

  • Page 116: Channels

    Supported Device Driver Capabilities Data Encoding Table 12: DT3034 Data Encoding Options DT3034 DOUT QUAD Binary Encoding Support SupportsBinaryEncoding Twos Complement Support SupportsTwosCompEncoding Returns Floating-Point Values ReturnsFloats Channels Table 13: DT3034 Channel Options DT3034 DOUT QUAD Number of Channels NumberOfChannels SE Support SupportsSingleEnded SE Channels...

  • Page 117: Gain

    Chapter 7 Gain Table 14: DT3034 Gain Options DT3034 DOUT QUAD Programmable Gain Support SupportsProgrammableGain Number of Gains NumberOfSupportedGains Gains Available SupportedGains 1, 2, 4, 8 1 Ranges Table 15: DT3034 Range Options DT3034 DOUT QUAD Number of Voltage Ranges NumberOfRanges Available Ranges ±10 V,...

  • Page 118: Thermocouple And Rtd Support

    Supported Device Driver Capabilities Thermocouple and RTD Support Table 17: DT3034 Thermocouple and RTD Support Options DT3034 DIN DOUT C/T QUAD Thermocouple Support SupportsThernocouple RTD Support SupportsRTD Resistance Support ReturnsOhms Voltage Converted to Temperature in Hardware SupportsTemperatureDataInStream Supported Thermocouple Types ThermocoupleType Supported RTD Types RTDType...

  • Page 119: Triggers

    Chapter 7 Triggers Table 19: DT3034 Trigger Options DT3034 DOUT QUAD Software Trigger Support SupportsSoftwareTrigger External Positive TTL Trigger Support SupportsPosExternalTTLTrigger External Negative TTL Trigger Support SupportsNegExternalTTLTrigger External Positive TTL Trigger Support for Single-Value Operations SupportsSvPosExternalTTLTrigger External Negative TTL Trigger Support for Single-Value Operations SupportsSvNegExternalTTLTrigger Positive Threshold Trigger Support...

  • Page 120: Clocks

    Supported Device Driver Capabilities Clocks Table 20: DT3034 Clock Options DT3034 DOUT QUAD Internal Clock Support SupportsInternalClock External Clock Support SupportsExternalClock Simultaneous Input/Output on a Single Clock Signal SupportsSimultaneousClocking Base Clock Frequency BaseClockFrequency 20 MHz 20 MHz 0 20 MHz 0 Maximum Clock Divider MaxExtClockDivider 65536...

  • Page 121: Counter/Timers

    Chapter 7 Counter/Timers Table 21: DT3034 Counter/Timer Options DT3034 DOUT QUAD Cascading Support SupportsCascading Event Count Mode Support SupportsCount Generate Rate Mode Support SupportsRateGenerate One-Shot Mode Support SupportsOneShot Repetitive One-Shot Mode Support SupportsOneShotRepeat Up/Down Counting Mode Support SupportsUpDown Edge-to-Edge Measurement Mode Support SupportsMeasure Continuous Edge-to-Edge Measurement Mode Support...
  • Page 122 Supported Device Driver Capabilities Table 21: DT3034 Counter/Timer Options (cont.) DT3034 DOUT QUAD Gate-Rising Edge Type SupportsGateRising Interrupt-Driven Operations SupportsInterrupt a. For one-shot and repetitive one-shot operations, the pulse width is set automatically to 100%. b. High-edge and low-edge are supported for one-shot and repetitive one-shot modes. High-level and low-level are supported for event counting and rate generation modes.
  • Page 123 Chapter 7...
  • Page 124 Calibration Calibrating the Analog Input Subsystem ........Calibrating the Analog Output Subsystem .
  • Page 125 Chapter 8 The DT3034 boards are calibrated at the factory and should not require calibration for initial use. We recommend that you check and, if necessary, readjust the calibration of the analog input and analog output circuitry on the DT3034 boards every six months. The DT3034 Calibration Utility is provided for calibrating DT3034 boards.
  • Page 126 Calibration Calibrating the Analog Input Subsystem This section describes how to configure the DT740 screw terminal panel for an internal or external reference, and how to use the DT3034 Calibration Utility to calibrate the analog input subsystem of the board. Choosing a Calibration Reference To calibrate the analog input circuitry, you can use either of the following references: •...
  • Page 127 Chapter 8 Signal DT740 Screw Terminal Analog Input 1 Analog Input 1 Return Analog Ground TB34 Follow the instructions on page 127. Configuring for an External Reference To calibrate the analog input circuitry using an external +9.3750 V reference, do the following: 1.
  • Page 128 Calibration 5. Follow the instructions on page 127. Note: If you have a version of the board without the -PBF (lead-free) designator, this potentiometer is labelled R4. 6. Click Quit when you are finished. Once you have finished this procedure, continue with “Calibrating the Analog Output Subsystem”...
  • Page 129 Chapter 8 4. In the Reference Source box, select the reference that you are using (Internal or External; Internal is the default). 5. In the Auto Calibration box, click Go. The bipolar (zero and full-scale) and unipolar (zero and full-scale) ranges are automatically calibrated, and the calibration values are displayed.
  • Page 130 Calibration 13. Click the increment or decrement arrows in the Manual Adjustment box until the display reads just above 0 V, then use the decrement arrow until the first value of 0 V is displayed (within 0.0005 V). 14. In the Range box, select PGH Zero. 15.
  • Page 131 Chapter 8 Calibrating the Analog Output Subsystem This section describes how to configure the DT740 screw terminal panel for an internal or external meter, and how to use the DT3034 Calibration Utility to calibrate the analog output subsystems of the board. Choosing a Calibration Meter To calibrate the analog output circuitry, you can use either of the following meters: •...
  • Page 132 Calibration 2. Connect Analog Out Return to Analog In 3 Return. Signal DT740 Screw Terminal Analog Output 1+ Return TB44 Analog Input 3 Return Follow the instructions on page 132. Configuring for an External Meter To calibrate DAC0 using an external voltage meter, do the following: 1.
  • Page 133 Chapter 8 Using the DT3034 Calibration Utility Once the DT3034 Calibration Utility is running and you have connected the required calibration signals to the DT740 screw terminal panel, do the following to calibrate the analog output subsystem on the DT3034 board: 1.
  • Page 134 Calibration Note: If you want to check the values for intermediate ranges, select Display Values in the Mode box and select any of the available ranges; the range is then displayed. You cannot calibrate intermediate ranges. 16. Click Quit when you are finished calibrating the analog output circuitry. Once you have finished this procedure, the analog output circuitry is calibrated.
  • Page 135 Chapter 8...
  • Page 136 Troubleshooting General Checklist ............Technical Support .
  • Page 137 Chapter 9 General Checklist Should you experience problems using the DT3034 board, follow these steps: 1. Read all the documentation provided for your product. Make sure that you have added any “Read This First” information to your manual and that you have used this information.
  • Page 138 Troubleshooting Table 22: Troubleshooting Problems (cont.) Symptom Possible Cause Possible Solution Computer does not Board is not seated properly. Check that the slot in which your DT3034 board is boot. located is a PCI slot, that the board is correctly seated in the slot, and that the board is secured in the slot with a screw.
  • Page 139 Chapter 9 Technical Support If you have difficulty using a DT3034 board, Data Translation’s Technical Support Department is available to provide technical assistance. To request technical support, go to our web site at http://www.mccdaq.com and click on the Support link. When requesting technical support, be prepared to provide the following information: •...
  • Page 140 An RMA # must be obtained from Application Engineering in advance of sending any product back to Measurement Computing. Customers outside the USA must contact their local distributor for a return procedure. Calibration certificates for most analog models can be obtained for a...
  • Page 141 Chapter 9...
  • Page 142 Specifications Analog Input Specifications ........... Analog Output Specifications.

  • Page 143: Analog Input Specifications

    Appendix A Analog Input Specifications Table 23 lists the specifications for the A/D subsystem on the DT3034 board. Table 23: A/D Subsystem Specifications Feature DT3034 Specifications Number of analog input channels Single-ended/ pseudo-differential: Differential: Number of gains 4 (1, 2, 4, 8) Resolution 16 bits Data encoding...
  • Page 144 Specifications Table 23: A/D Subsystem Specifications (cont.) Feature DT3034 Specifications Effective number of bits @ 1 kHz sine wave, 2 channels: 14.4 bits typical (at 150 kS/s aggregate rate) 10 kHz sine wave, 2 channels: 14.2 bits typical (at 150 kS/s aggregate rate) sine wave, 2 channels: 13.5 bits typical (at 150 kS/s aggregate rate with sine wave of 20 kHz)
  • Page 145 Appendix A Table 23: A/D Subsystem Specifications (cont.) Feature DT3034 Specifications A/D sample clock output signal Output driver: – Output driver high voltage: 2.0 V minimum (IOH = 15 mA); – 2.4 V minimum (IOH = 3 mA) Output driver low voltage: 0.5 V maximum (IOL = 24 mA);...

  • Page 146: Specifications

    Specifications Analog Output Specifications Table 24 lists the specifications for the D/A subsystem on the DT3034 board. Table 24: D/A Subsystem Specifications Feature DT3034 Specifications Number of analog output channels 2 (voltage output) Resolution 16 bits Data encoding (input) Offset binary Nonlinearity (integral) ±4.0 LSB Differential linearity...
  • Page 147 Appendix A Table 24: D/A Subsystem Specifications (cont.) Feature DT3034 Specifications External D/A digital (TTL) trigger Input type: Schmitt trigger, edge sensitive Input load: 1 HCT14 (TTL) High-level input voltage: 2.0 V minimum Low-level input voltage: 0.8 V maximum Hysteresis: 0.4 V (minimum);...

  • Page 148: Digital I/O Specifications

    Specifications Digital I/O Specifications Table 25 lists the specifications for the DIN/DOUT subsystems on the DT3034 boards. Table 25: DIN/DOUT Subsystem Specifications Feature Specifications Number of lines 16 (bidirectional) Number of ports 2 (8 bits each) Termination 47 k resistor pullup to +3.3 V; 33 series resistor Inputs Input type:...

  • Page 149: Counter/Timer Specifications

    Appendix A Counter/Timer Specifications Table 26 lists the specifications for the C/T subsystems on the DT3034 boards. Table 26: C/T Subsystem Specifications Feature Specifications Number of counter/timers Clock Inputs Input type: Schmitt trigger, rising-edge sensitive Input load: 1 HCT14 (TTL) High-level input voltage: 2.0 V minimum Low-level input voltage:...

  • Page 150: Power, Physical, And Environmental Specifications

    Specifications Power, Physical, and Environmental Specifications Table 27 lists the power, physical, and environmental specifications for the DT3034 boards. Table 27: Power, Physical, and Environmental Specifications Feature Specifications Power +5 V (±0.25 V) 1.5 A nominal 5 V not used +12 V 0.12 A nominal 12 V...

  • Page 151: Connector Specifications

    Appendix A Connector Specifications Table 28 lists the connector specifications for the DT3034 boards and corresponding cables. Table 28: Connector Specifications for the DT3034 Board Feature Specifications 50-Pin Connector Plug for cable: AMP/Tyco 5787131-1 Cable shell kit: AMP/Tyco 787133-1 Cable wire: AMP/Tyco 57506-1 Receptacle for board: AMP/Tyco 6658751-1...

  • Page 152: Regulatory Specifications

    Specifications Regulatory Specifications Table 29 lists the regulatory specifications for the DT3034 boards. Table 29: Regulatory Specifications Feature Specifications Emissions (EMI) FCC Part 15, EN55022:1994 + A1:1995 + A2:1997 VCCI, AS/NZS 3548 Class A Immunity EN61000-6-1:2001 RoHS (EU Directive 2002/95/EG) Compliant (as of July 1st, 2006)
  • Page 153 Appendix A...
  • Page 154 Connector Pin Assignments...
  • Page 155 Appendix B Connector J1 on the DT3034 Board Table 30 lists the pin assignments of connector J1 on the DT3034 board. Table 30: Connector J1 Pin Assignments on the DT3034 Board Signal Description Signal Description +5 V Ref_Out Reserved Reserved Analog Output 1+ 15 V output Analog Output 0+...
  • Page 156 Connector Pin Assignments Table 30: Connector J1 Pin Assignments on the DT3034 Board (cont.) Signal Description Signal Description Analog Input 13/ Analog Input 12/ Analog Input 05 Return Analog Input 04 Return Analog Input 11/ Analog Input 10/ Analog Input 03 Return Analog Input 02 Return Analog Input 09/ Analog Input 08/...
  • Page 157 Appendix B Connector J2 on the DT3034 Board Table 31 lists the pin assignments of connector J2 on the DT3034 boards. Table 31: Connector J2 Pin Assignments on the DT3034 Board Signal Description Signal Description + 5 V Output + 5 V Output Reserved A/D Sample Clock Output A/D Trigger Output...
  • Page 158 Connector Pin Assignments Table 31: Connector J2 Pin Assignments on the DT3034 Board (cont.) Signal Description Signal Description Digital I/O Bank A 6 Digital I/O Bank A 5 Digital I/O Bank A 4 Digital Ground Digital Ground Digital Ground Reserved Reserved Shield Ground Analog Trigger Return...
  • Page 159 Appendix B Screw Terminal Assignments for the DT740 Table 32 lists the screw terminal assignments for connector J1 on the DT740 screw terminal panel. Table 32: Pin Assignments for Connector J1 on the DT740 J1 Pin Signal Description J1 Pin Signal Description Analog Input 00 Analog Input 08/00 Return...
  • Page 160 Connector Pin Assignments Table 33 lists the screw terminal assignments for connector J2 on the DT740 screw terminal panel. Table 33: Screw Terminal Assignments for Connector J2 on the DT740 J2 Pin Signal Description J2 Pin Signal Description 51, 52 Digital Ground User Clock Input 0 User Counter Output 0...
  • Page 161 Appendix B Table 33: Screw Terminal Assignments for Connector J2 on the DT740 (cont.) J2 Pin Signal Description J2 Pin Signal Description Analog Trigger Digital Shield Ground Reserved Reserved 35, 36 Digital Ground 1, 2 +5 V Out...
  • Page 162 Using Your Own Screw Terminal Panel Analog Inputs ............. . . Analog Outputs .
  • Page 163 Appendix C Data acquisition boards can perform only as well as the input connections and signal integrity you provide. If you choose not to use the DT740 screw terminal panel, considerations must be given as to how the signals interact in the real world as well as how they interact with each other.

  • Page 164: Using Your Own Screw Terminal Panel

    Using Your Own Screw Terminal Panel Analog Inputs Typical data acquisition boards have three different types of analog input configurations that you can use: • Single-ended • Pseudo-differential • Differential Single-Ended Inputs With single-ended inputs, you have the maximum number of inputs but have the worst-case noise immunity without external signal conditioning.
  • Page 165 Appendix C Differential Inputs Differential inputs offer the maximum noise rejection at the expense of half your total channel count. For the best results, shielded twisted pairs are a must. The shield must connect at one end so that ground currents do not travel over the shield. In low-level voltage applications, differential inputs reduce problems not only due to electrostatic and magnetic noise, but due to cross-talk and thermal errors.

  • Page 166: Analog Outputs

    Using Your Own Screw Terminal Panel Analog Outputs Most data acquisition boards have a minimum of two analog output channels, with a resolution of 12 to 16 bits (even though the accuracy may be less). On all Data Translation boards, we ensure that the analog outputs do not break into a high frequency oscillation with high capacitance loads that may be experienced with long cables.

  • Page 167: Digital Inputs And Counter/Timer Inputs

    Appendix C Digital Inputs and Counter/Timer Inputs TTL-type inputs must have current limiting so that circuitry is not damaged when power is removed. On all Data Translation PCI boards, current limiting is used to prevent damage in this fault condition. On high-speed clock inputs, a ground that is located in the connector next to the clock must be connected as a twisted pair with the high-speed clock input.

  • Page 168: Digital Outputs

    Using Your Own Screw Terminal Panel Digital Outputs If you are using the high drive capability of any of the PCI boards, ensure that the load is returned to the digital ground provided in the connector next to the outputs. If just eight of the digital outputs are switching 16 mA per output, then 128 mA of current flows.

  • Page 169: Cabling Information

    Appendix C Cabling Information If you are building your own screw terminal panel and/or cable, refer to Appendix A connector specifications.
  • Page 170 Index Index error conditions gains A/D Over Sample error output ranges A/D sample clock resolution external single-value operations internal specifications A/D subsystem trigger sources specifications analog threshold trigger A/D Trigger Out signal analog input channel about-trigger acquisition mode external abrupt stop application wiring analog input connecting analog outputs...
  • Page 171 Index C/T subsystem connecting signals specifications analog outputs cables counter/timer signals EP307 current loop analog inputs EP308 differential analog inputs cabling information digital I/O signals calibrating the board event counting signals analog input subsystem externally cascaded counter/timers analog output subsystem pseudo-differential analog inputs running the utility pulse output signals...
  • Page 172 Index high-edge gate type DIN and DOUT high-level gate type device driver high-to-low output pulse differential channels internal gate type differential inputs low-edge gate type digital event trigger low-level gate type digital I/O features low-to-high output pulse lines one-shot mode operation modes operation modes resolution...
  • Page 173 Index low-level D/A output none (software) external clock divider rising edge maximum generating continuous pulses minimum external digital trigger analog input help, online analog output high-edge gate type external negative digital trigger high-level gate type external positive digital trigger high-to-low pulse output externally-retriggered scan mode Host Block Overflow error hysteresis...
  • Page 174 Index loading the device driver externally-retriggered scan mode Windows 7 frequency measurement Windows Vista one-shot pulse output Windows XP rate generation logic-high level gate type repetitive one-shot pulse output logic-low level gate type single-value analog input low-edge gate type single-value analog output low-level gate type single-value digital I/O low-to-high pulse output...
  • Page 175 Index software-retriggered screw terminal panel Quick DataAcq continuous analog input operations selecting expansion slots frequency measurement operations setting up the computer pulse output operations simultaneous start list running single buffer wrap mode single-value analog input operations single-ended channels single-value analog output operations number of single-value digital input operations single-ended inputs...
  • Page 176 Index SupportsBuffering trigger acquisition modes SupportsCascading about-trigger SupportsChannelListInhibit post-trigger SupportsContinuous pre-trigger SupportsContinuousPrePostTrigger trigger sources SupportsContinuousPreTrigger analog input channel SupportsCount analog threshold trigger SupportsDifferential external digital (TTL) trigger SupportsDigitalEventTrigger software trigger SupportsExternalClock triggered scan SupportsGateHighEdge number of scans per trigger SupportsGateHighLevel retrigger frequency SupportsGateLowEdge Triggered Scan Counter...
  • Page 177 Index wiring recommendations, when using your own screw terminal panel wiring signals analog outputs counter/timer signals current loop analog inputs differential analog inputs digital I/O signals event counting signals externally cascaded counter/timers pseudo-differential analog inputs pulse output signals single-ended analog inputs writing programs in C/C++ Visual Basic...

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