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  • Page 1 (217) 352-9330 | Click HERE Find the Keithley DAS-1802HC at our website:...
  • Page 2 DAS-1800HC Series User’s Guide A G R E A T E R M E A S U R E O F C O N F I D E N C E Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 3 Hardware Keithley Instruments, Inc. warrants that, for a period of one (1) year from the date of shipment (3 years for Models 2000, 2001, 2002, 2010 and 2700), the Keithley Hardware product will be free from defects in materials or workmanship. This warranty will be honored provided the defect has not been caused by use of the Keithley Hardware not in accordance with the instructions for the product.
  • Page 4 EXCEPT FOR THE EXPRESS WARRANTIES ABOVE KEITHLEY DISCLAIMS ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION, ALL IMPLIED WARRANTIES OF MERCHANT- ABILITY AND FITNESS FOR A PARTICULAR PURPOSE. KEITHLEY DISCLAIMS ALL WARRANTIES WITH RESPECT TO THE OTHER HARDWARE AND OTHER SOFTWARE.
  • Page 5 DAS-1800HC Series User’s Guide Revision F - August 2000 Part Number: 77150 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 6 All other brand and product names are trademarks or registered trademarks of their respective companies. Copyright © Keithley Instruments, Inc., 1999, 1995, 1994, 1993. All rights reserved. Reproduction or adaptation of any part of this documentation beyond that permitted by Section 117 of the 1979 United States Copyright Act without permission of the Copyright owner is unlawful.
  • Page 7 Keithley products are designed for use with electrical signals that are rated Installation Category I and Installation Category II, as described in the International Electrotechnical Commission (IEC) Standard IEC 60664. Most mea- surement, control, and data I/O signals are Installation Category I and must not be directly connected to mains voltage or to voltage sources with high transient over-voltages.
  • Page 8 (Note that selected parts should be purchased only through Keithley Instruments to maintain accuracy and functionality of the product.) If you are unsure about the applicability of a replacement component, call a Keithley Instruments office for information.
  • Page 9: Table Of Contents

    Table of Contents Preface Overview Supporting Software ........1-2 Accessories .
  • Page 10 Installing the Software ....... . . 3-2 Installing the DAS-1800HC Series Standard Software Package .
  • Page 11 Troubleshooting Problem Isolation ........7-1 Using the DriverLINX Event Viewer .
  • Page 12 Index List of Figures Figure 2-1. Block Diagram of DAS-1800HC Series Board . . . 2-2 Figure 2-2. Timing of Conversion Modes for a Queue of Channels 4 to 7 ....2-10 Figure 2-3.
  • Page 13 Figure 6-1. Potentiometers and Test Points on the DAS-1800HC Series Boards ....6-2 Figure B-1. Pin Assignments for the Main I/O Connector of DAS-1800HC Series Boards ....B-2 Figure B-2.
  • Page 14 List of Tables Table 2-1. DAS-1801HC Gains and Ranges for Unipolar and Bipolar Modes ....2-4 Table 2-2. DAS-1802HC Gains and Ranges for Unipolar and Bipolar Modes ....2-4 Table 2-3.
  • Page 15: Preface

    DAS-1802HC board, it refers to the two models collectively as the DAS-1800HC Series boards. This guide focuses primarily on describing the DAS-1800HC Series boards and their capabilities, setting up the boards and their associated software, making typical hookups, and operating the DriverLINX software.
  • Page 16 This section also contains instructions for obtaining technical support. Appendix A lists the specifications for DAS-1800HC Series boards. Appendix B lists the pin assignments for the main I/O connectors of DAS-1800HC Series boards and for the four 37-pin accessory connectors of the STA-1800HC and CONN-1800HC accessories.
  • Page 17: Overview

    Overview The DAS-1800HC Series boards are high-performance data acquisition boards that operate with DriverLINX software that requires: an IBM PC or compatible AT (386 or Pentium CPU) with a minimum of 2 MB of memory at least one CD ROM drive, one fixed disk drive, and one floppy disk drive Microsoft Windows 95/98, or Windows NT 4.0 or higher...
  • Page 18: Supporting Software

    For more information on these features, refer to the functional description in Section 2. Supporting Software The following software is available for operating DAS-1800HC Series boards: DAS-1800HC Series standard software package — Shipped with DAS-1800HC Series boards. Includes DriverLINX for Microsoft...
  • Page 19: Accessories

    Series boards: STA-1800HC is a screw terminal accessory. This accessory connects to the DAS-1800HC Series main I/O connector through a CAB-1800 cable to bring all the I/O signals out to labeled screw terminals for easy access. Refer to Section 4 for connections.
  • Page 20 CONN-1800HC is a connector panel. This accessory connects to the DAS-1800HC Series main I/O connector through a CAB-1800 Series cable to provide a 4-connector interface for SSH-8s, MB modules, or custom hookups. STP-100 is a screw terminal panel. This accessory provides general-purpose screw-terminal connections in a compact form factor.
  • Page 21: Functional Description

    Functional Description This section describes features of the following DAS-1800HC Series board components: the analog input, the analog output, and the digital I/O. These descriptions are offered to familiarize you with the operating options and to enable you to make the best use of your board. The block diagram in Figure 2-1 represents both the DAS-1801HC and the DAS-1802HC.
  • Page 22 Local Control Bus Functional Description Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 23: Analog Input Features

    Analog Input Features The analog input section of a DAS-1800HC Series board multiplexes all the active input channels (up to 64 single-ended or 32 differential) down to a single, 12-bit sampling ADC (analog-to-digital converter). Other features of this section include software-configurable input modes, a channel-gain queue, data conversion modes, data transfer modes, and trigger and gate control.
  • Page 24: Channel-Gain Selection

    Each of the 64 queue positions holds your choice of a channel number and a corresponding gain. You can enter multiple channels sequentially or non-sequentially and with the same or different gain codes. Available gains and input ranges for both DAS-1800HC Series boards are listed in the following subsection. Gains and Ranges The available gains and their corresponding input ranges are listed in Table 2-1 for the DAS-1801HC and Table 2-2 for the DAS-1802HC.
  • Page 25: Maximum Achievable Throughput Rates

    Maximum Achievable Throughput Rates Because you can change input ranges on a per-channel basis, throughput is likely to drop if you group channels with varying gains in sequence. The drop occurs because the channels with low-level inputs (magnitude of 100mV or less) are slower than those with high-level inputs and because the channels with low-level inputs must drive out the residual signals left by the high-level inputs.
  • Page 26: Table 2-3. Throughput For Channel-To-Channel Sampling In Bipolar Mode With Fixed Gain

    noise is amplified and digitized. As a result, you must carry out the measurement of low-level signals carefully to minimize noise effects. Low-level transducers are best used with signal conditioning. Always use the ±20mV, 0 to 20mV, ±100mV, and 0 to 100mV ranges with the differential input mode.
  • Page 27: Table 2-4. Throughput For Channel-To-Channel Sampling In Unipolar Mode With Fixed Gain

    The throughput for channel-to-channel sampling with fixed gain in unipolar mode (0.024% maximum error) is as shown in Table 2-4. Table 2-4. Throughput for Channel-to-Channel Sampling in Unipolar Mode with Fixed Gain DAS-1801HC Range DAS-1802HC Range Throughput — 0 to 10.0V 312.5 ksamples/s 0 to 5.00V 0 to 5.00V...
  • Page 28: Table 2-6. Maximum Throughput For Das-1801Hc

    The maximum throughput for a DAS-1801HC, operating in unipolar mode and having less than 1 LSB of error when driven from an ideal voltage source, is as shown in Table 2-6. Table 2-6. Maximum Throughput for DAS-1801HC in Unipolar Mode Maximum Throughput To 0 to 5V To 0 to 1.0V...
  • Page 29: Data Conversion Modes

    From 0 to 1.25V Data Conversion Modes DAS-1800HC Series boards support two modes of data conversion: paced and burst. The conversion rate for each of these two modes is controlled by its own clock: the pacer clock for paced mode and the burst mode conversion clock for burst mode.
  • Page 30: Clock Sources

    Figure 2-2. Timing of Conversion Modes for a Queue of Channels 4 to 7 Clock Sources DAS-1800HC Series boards provide two clocks: a pacer clock and a burst mode conversion clock. In paced mode, the pacer clock works alone to time interrupt-mode and DMA-mode operations, as shown in Figure 2-2.
  • Page 31: Pacer Clock

    In paced mode, the pacer clock determines the conversion rate. The following clock sources are available for paced mode conversions on DAS-1800HC Series boards: Software — DAS-1800HC Series boards allow you to acquire single samples under program control. Hardware (internal clock source) — The internal pace clock source uses the onboard 82C54 counter/timer and a crystal-controlled 5MHz time base.
  • Page 32: Burst Mode Conversion Clock

    Triggers A trigger starts an analog input operation. The polarity of external triggers in the DAS-1800HC Series boards is software-selectable. You can use one of the following trigger sources to start an analog input operation: Internal — When you enable the analog input operation, conversions begin immediately.
  • Page 33: Figure 2-3. Enabling Conversions With Software Triggering/Gating And With Internal

    External Digital — Connect the digital trigger to the digital input DI1 pin (B40) of the 100-pin connector, J1. Trigger types are as follows: – Positive-edge trigger - Triggering occurs on the rising edge of the trigger signal. – Negative-edge trigger - Triggering occurs on the falling edge of the trigger signal.
  • Page 34: Pre-Trigger Acquisition

    Trigger occurs (on positive edge) TGIN input Conversions begin with TGOUT output external source (programmed for negative edge) External clock source Internal clock source count idle state count count count Conversions begin with internal clock source Figure 2-4. Enabling Conversions with a Hardware Trigger Pre-Trigger Acquisition In pre-trigger acquisition, the data of interest appears before a specific digital trigger.
  • Page 35: Post-Trigger Acquisition

    Post-Trigger Acquisition In post-trigger acquisition, the data of interest appears after a specific event. Acquisition starts on an internal, analog, or digital trigger and continues until a specified number of samples has been acquired or until the operation is stopped by software. Gates A gate in the active state allows conversions to proceed.
  • Page 36: Data Transfer Modes

    2nd conversion Figure 2-5. Hardware Gate Data Transfer Modes You can transfer data from the DAS-1800HC Series boards to the computer using the following data transfer modes: Interrupt — You can program the board to generate an interrupt for events such as FIFO Half Full or FIFO Not Empty . FIFO Half Full occurs after the FIFO accumulates 512 12-bit samples for transfer to computer memory.
  • Page 37: Analog Output Features

    CPU and at high-transfer rates makes DMA an attractive method for transferring data in data acquisition systems. DAS-1800HC Series boards use DMA channels 5, 6, and 7 to perform single- or dual-channel DMA transfers of A/D data from the board to memory.
  • Page 38: Digital I/O Features

    Digital I/O Features DAS-1800HC Series boards contain four digital inputs (DI0 to DI3) and eight digital outputs (DO0 to DO7). Logic 1 on an I/O line indicates that the input/output is high (greater than 2.0V); logic 0 on an I/O line indicates that the input/output is low (less than 0.8V).
  • Page 39: Using Digital Control Signal Tgout

    Using Digital Control Signal TGOUT When using the onboard pacer clock only, you can use the trigger/gate output (TGOUT) signal to synchronize other DAS-1800HC Series boards or to trigger or gate user-specific events as follows: When using digital control signal TGIN as a trigger, as shown in Figure 2-7a, note that TGOUT does not retrigger and thus cannot be used with about-trigger acquisitions.
  • Page 40: Using Digital Control Signal Ssho

    TGIN 200ns typical remains active until conversions are TGOUT a. TGIN as a Trigger disabled by software TGIN 200ns typical TGOUT b. TGIN as a Gate software enables software disables conversions conversions Internal Trigger/Gate < 1µs TGOUT c. Internal Trigger/Gate Figure 2-7.
  • Page 41: Assigning An Interrupt

    SSHO as a converter clock output signal. SSHO becomes active only when software enables A/D conversions. The timing for SSHO generation when the DAS-1800HC Series boards are not used for SSH hardware control is shown in Figure 2-8. active edge...
  • Page 42: Power

    Power DAS-1800HC Series boards use the +5V and the +12V provided by your computer. An onboard DC/DC converter develops ±15V at a maximum current draw of 30mA for external use. In addition to the ±15V, the DAS-1800HC Series boards supply the +5V from the computer to a pin on the main I/O connector.
  • Page 43: Setup And Installation

    Setup and Installation This section describes inspection, software installation, configuration, and hardware installation for the DAS-1800HC Series boards. Read this section before you attempt to install and use your DAS-1800HC Series board. Unwrapping and Inspecting Your Board Remove the wrapped board from its outer shipping carton and proceed as follows: 1.
  • Page 44: Installing The Software

    5. When satisfied with the inspection, proceed with the software and hardware setup instructions. DAS-1800HC Series boards are factory calibrated and require no Note: further adjustment prior to installation. If at a later time you decide to re-calibrate the board, refer to Section 6 for instructions.
  • Page 45: Selecting The Driverlinx Components To Install

    5. Determine whether your DAS-1800HC board can use your computer’s free resources. 6. Set any jumpers/switches to configure your DAS-1800HC board to use your computer’s free resources. 7. Set any other jumpers/switches to configure your DAS-1800HC board the way you want it to operate. Make a note of the switch and jumper settings in order to configure the board using DriverLINX.
  • Page 46 6. Open the manuals appropriate to the DAS-1800 installation and read them before installing your DAS-1800 board or configuring DriverLINX: Installation and Configuration Appendix F: Configuration and Implementation Notes—for Keithley DAS-1800. DriverLINX Technical Reference Manual DriverLINX Analog I/O Programming Guide DriverLINX Digital I/O Programming Guide DriverLINX Counter/Timer Programming Guide Appendix, I/O Port, Interrupt, and DMA Channel Usage Other manuals appropriate to your installation.
  • Page 47: Setting The Base Address

    The base address switch is preset at the factory for a hexadecimal value of 300 (768 decimal). If this address appears to conflict with the address of another device in the computer (including other DAS-1800HC Series boards), you must reset the base address switch.
  • Page 48: Installing The Board

    Installing or removing a board while power is on can damage Caution: your computer. Use the following steps to install a DAS-1800HC Series board in an accessory slot of your computer: 1. Turn off power to the computer and all attached equipment.
  • Page 49: Table 3-1. I/O Address Map (000H To 3Ffh)

    Table 3-1 lists I/O addresses commonly used by IBM PC/XT, AT, and compatible computers. Determine an even boundary of eight I/O addresses within the range of 000H to 3F8H that are not being used by another resource in your system (including another DAS-1800 Series board), and set the switches to the appropriate base address.
  • Page 50 DriverLINX. Refer to the DriverLINX Appendix F: Configuration and Implementation Notes— Keithley DAS-1800 manual. After you have successfully installed the DAS-1800HC Series board in your computer, start Windows. Run “Learn DriverLINX” (LearnDL.exe) from the DriverLINX program group to tell DriverLINX how you configured your DAS-1800HC Series...
  • Page 51 1. Start Windows as you normally would and select the Program Manager window. 2. Either select the “Learn DriverLINX” icon created when you installed DriverLINX or enter “<drive>:/DRVLNX/LEARNDL” in the Command Line edit box. The Command Line edit box is activated by selecting the Run...
  • Page 52 You are now ready to make I/O connections. Refer to Section 4 for descriptions of common I/O accessories and connections for DAS-1800HC Series boards. 3-10 Setup and Installation Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 53: Cabling And Wiring

    Pin assignments for the main I/O connector of a STA-1800HC are a mirror image of those for the 100-pin, main I/O connector of a DAS-1800HC Series board, as shown in Figure 4-1 and Figure 4-2. Attaching an STA-1800HC Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 54: Figure 4-1. Pin Assignments For The Main I/O Connector Of The Das-1800Hc Series Boards

    DOSTB DGND DGND DGND DGND DAS-1800HC Series Board I/O Connector Figure 4-1. Pin Assignments for the Main I/O Connector of the DAS-1800HC Series Boards Cabling and Wiring Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 55: Figure 4-2. Pin Assignments For The Main I/O Connector Of The Sta-1800Hc

    B Side A Side AGND AGND CH00 HI CH16 HI CH00 LO/ CH32 HI CH16 LO/CH48 HI CH01 HI CH17 HI CH01 LO/CH33 HI CH17 LO/CH49 HI CH02 HI CH18 HI CH02 LO/ CH34 HI CH18 LO/CH50 HI CH03 HI CH19 HI CH03 LO/CH35 HI CH19 LO/CH51 HI...
  • Page 56: Figure 4-3. Cabling And Connections For Attaching An

    Use a CAB-1800 Series cable to connect an STA-1800HC and DAS-1800HC Series board together as shown in Figure 4-3. DAS-1800HC Series Board STA-1800HC Figure 4-3. Cabling and Connections for Attaching an STA-1800HC The CAB-1800 Series of cables includes the following models: CAB-1800 —...
  • Page 57: Attaching The Cjc Circuit Of An Sta-1800Hc

    Attaching the CJC Circuit of an STA-1800HC The STA-1800HC contains a CJC circuit that develops a voltage directly proportional to the temperature of the STA-1800HC screw-terminal blocks. At 0˚C, the CJC circuit output is 0V; the output changes at the rate of 10mV per ˚C.
  • Page 58: Attaching A Conn-1800Hc

    Attaching a CONN-1800HC The CONN-1800HC connector panel is an interface for cabling SSH-8s and MB modules to DAS-1800HC Series boards. You can also use the CONN-1800HC for custom hookups. This accessory is essentially an STA-1800HC without screw terminals or CJC circuit. Components are as...
  • Page 59: Attaching An Ssh-8

    Attaching an SSH-8 The SSH-8 is a simultaneous-sample-and-hold accessory. This accessory can serve as a front-end analog interface for DAS-1800HC Series boards when connected through an STA-1800HC or a CONN-1800HC. Note that the attached SSH-8 accessories must be set as slaves. Attach the SSH-8 accessories to the STA-1800HC or CONN-1800HC as shown in Figure 4-7.
  • Page 60: Attaching Mb01 Backplanes

    Attaching MB01 Backplanes Use an STA-1800HC or a CONN-1800HC to connect MB01 backplanes to a DAS-1800HC Series board, as shown in Figure 4-8. For details of the MB modules, refer to the MB Series User’s Guide . C-16MB1 MB01 Cable...
  • Page 61: Attaching An Stp-100

    Attaching an STP-100 The STP-100 screw terminal accessory is an interface for I/O connections to DAS-1800HC Series boards. Use a CAB-1800 Series cable to connect the STP-100 and DAS-1800HC Series boards together as shown in Figure 4-9. Pin assignments for screw terminals of the STP-100 are the same as those for the main I/O connector on the STA-1800HC (see Figure 4-2 on page 4-3).
  • Page 62: Connecting Signals

    32 differential inputs or 64 separate signal sources to 64 single-ended inputs. DAS-1800HC Series boards contain separate grounds for analog and digital signals. An analog ground (AGND) is for analog signals and analog power; a digital ground (DGND) is for digital signals and other power-supply returns.
  • Page 63: Additional Precautions

    Minimize noise from crosstalk and induced-voltage pickup in the flat cables and screw-terminal accessories by using shielded cable. Connect the shield to AGND and the inner conductors to Channel LO and HI. Channel LO and AGND should have a DC return (or connection) at some point;...
  • Page 64: Connecting A Signal To A Single-Ended Analog Input

    DAS-1800HC Series Board Signal Source AGND Figure 4-10. Connections for Wiring a Signal Source to a DAS-1800HC Series Board Configured for Single-Ended Inputs Note: When you wire signals to the analog input channels, you are advised to wire all unused channels to AGND. This action prevents the input amplifiers from saturating, and it ensures the accuracy of your data.
  • Page 65: Figure 4-11. Three Types Of Connections For Wiring A Signal

    The resistance of the bias return resistor must be greater than 1000 R In the lower circuit, bias current return is inherently provided by the source. The circuit requires no bias resistors. Channel n High Channel n Low Signal DAS-1800HC Series Board Source AGND Where R > 100Ω = 2000 R...
  • Page 66: Avoiding Ground Loops With Differential Inputs

    Avoiding Ground Loops with Differential Inputs Frequently, the signal-source ground and the DAS-1800HC Series board ground are not at the same voltage level because of the distances between equipment wiring and the building wiring. This difference is referred to as...
  • Page 67: Connecting Analog Output Signals

    Connecting Analog Output Signals DAS-1800HC Series boards have outputs for each of the two DACs. Refer to Table A-2 in Appendix A for voltages, current limits, and other loading information. Make your connections to the DAC output terminals through corresponding screw terminals of an STA-1800HC or STP-100.
  • Page 68: Connecting And Synchronizing Multiple Boards

    XPCLK — is the external pacer clock input, described in the next section and in “Clock Sources” on page 2-10. Use the digital-input terminal DI0/XPCLK for connecting this signal. DOSTB — is the digital output strobe, described in “Using Digital Control Signal DOSTB”...
  • Page 69 In Scheme 1, you connect the trigger/gate inputs of the three boards together and supply the trigger or gate input. A/D conversions on each board start 400 ±100ns from the active edge of the trigger input. All conversions start within 100 ±100ns of each other from board to board. When using scheme 1, you can use the onboard pacer clock or an external pacer clock.
  • Page 70: Testing The Board

    Testing the Board This section describes how to use DriverLINX to test functions of DAS-1800HC Series boards. DriverLINX Analog I/O Panel The DriverLINX Analog I/O Panel is an application that demonstrates analog input/output using DriverLINX. With the Analog I/O Panel you can: Analyze analog signals using the two-channel Oscilloscope.
  • Page 71: Test Panel Application

    5. Select the Logical Device you want to operate by dragging the pointer in the Device Selection section. The Analog I/O Panel displays the Scope, Meter, SST, and Level control tabs, depending on the capabilities of your DAS-1800HC board. 6. The Scope uses two analog input channels referred to as ChA and ChB.
  • Page 72: Calibration

    Potentiometers and Test Points Figure 6-1 shows the locations of the potentiometers and test points involved with the calibration of a DAS-1800HC Series board. The potentiometers are labeled R5 to R8, R12 and R13, R15 and R16, and R20. The test points are TP1 to TP5. The calibration utility, described in the next section, directs you to these components and explains what to do with them during the calibration process.
  • Page 73: Driverlinx Calibration Utility

    A/D Status Base Address Switch Figure 6-1. Potentiometers and Test Points on the DAS-1800HC Series Boards DriverLINX Calibration Utility DriverLINX Calibration Utility will guide you through the calibration procedure. Before calibration, specify the following parameters in the setup panel to get the correct instructions: Logical Device —...
  • Page 74: Troubleshooting

    7-6 for information on how to contact an applications engineer. Problem Isolation If you encounter a problem with a DAS-1800HC Series board, use the instructions in this section to isolate the cause of the problem before calling Keithley.
  • Page 75: Device Initialization Error Messages

    Device Initialization Error Messages During device initialization, DriverLINX performs a thorough test of all possible subsystems on the DAS-1800HC Series board as well as the computer interface. If DriverLINX detects any problems or unexpected responses, it reports an error message to help isolate the problem. The device initialization error messages fall into three basic categories: “Device not found”...
  • Page 76: Identifying Symptoms And Possible Causes

    Identifying Symptoms and Possible Causes Use the troubleshooting information in Table 7-1 to try to isolate the problem. Table 7-1 lists general symptoms and possible solutions for problems with DAS-1800HC Series boards. Table 7-1. Troubleshooting Information Symptom Possible Cause Possible Solution...
  • Page 77 Check wiring to screw terminal. Another system resource is using Reconfigure the base address of the specified base address. the DAS-1800HC Series board; refer to page 3-5 for more information. Check the I/O assignments of other system resources and reconfigure, if necessary.
  • Page 78: Testing The Board And Host Computer

    Table 7-1, continue with the next two sections to further isolate the problem. Testing the Board and Host Computer To isolate the problem to the DAS-1800HC Series board or to the host computer, use the following steps: Caution: Removing a board with the power ON can cause damage to your board and/or computer.
  • Page 79: Testing The Accessory Slot And I/O Connections

    Series board that you know is functional. To test the computer accessory slot and the I/O connections, follow these steps: 1. Remove computer power again, and install a DAS-1800HC Series board that you know is functional. Do not make any I/O connections.
  • Page 80 An applications engineer will help you diagnose and resolve your problem over the telephone. Please make sure that you have the following information available before you call: DAS-1800HC Series Model ___________________ Board Configuration Serial # ___________________ Revision code ___________________ Base address setting...
  • Page 81 If you are submitting your equipment for repair under warranty, you must include the invoice number and date of purchase. To enable Keithley to respond as quickly as possible, you must include the RMA number on the outside of the package.
  • Page 82: Specifications

    Specifications Tables A-1 to A-4 list specifications for the DAS-1800HC Series boards. Table A-1. Analog Input Specifications Feature DAS-1801HC DAS-1802HC Number of channels Software-selectable as 32 differential or 64 single-ended Input mode Software-selectable as unipolar or bipolar Resolution 12-bit (1 part in 4096) Data format 16-bit 2’s complement, right-justified...
  • Page 83 Table A-1. Analog Input Specifications (cont.) Feature DAS-1801HC DAS-1802HC Temperature coefficient of accuracy (includes ADC) Offset • Bipolar: ±20µV/˚C ±(12µV/˚C ÷ gain) maximum • Unipolar: ±20µV/˚C ±(14µV/˚C ÷ gain) maximum Gain • ±20 ppm/˚C for gain < 50 • ±30 ppm/˚C for gain = 50 •...
  • Page 84 Table A-1. Analog Input Specifications (cont.) Feature DAS-1801HC DAS-1802HC Noise • p-p = 1, rms = 0.1 for gain = 1 • p-p = 1, rms = 0.1 for gain = 1 Bipolar electrical noise • p-p = 1, rms = 0.1 for gain = 5 •...
  • Page 85 Table A-2. Analog Output Specifications Attribute DAS-1800HC Series Boards Resolution 12-bit (one part in 4096 or 224 ppm) Data format Right justified, offset binary Range ±10.00V Linearity ± LSB typical; ± LSB max. Integral ±1 LSB Differential Output current drive ±5mA max.
  • Page 86 Table A-4. Power Supply Specifications Feature DAS-1800HC Series Boards +5VDC input 430mA typical; 870mA maximum +12VDC input 400mA typical; 550mA maximum Maximum current available 30mA at the ±15V outputs Maximum current available 1.0A at the +5V output Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 87: Connector Pin Assignments

    50: bank A and bank B. All are female connectors. The STA-1800HC, STP-100 and CONN-1800HC connectors are a mirror image of the DAS-1800HC Series board connector. Figure B-1 shows pin assignments for the main I/O connector of DAS-1800HC Series boards;...
  • Page 88: Figure B-1. Pin Assignments For The Main I/O Connector Of Das-1800Hc Series Boards

    TGOUT DOSTB DGND DGND DGND DGND DAS-1800HC Series Board I/O Connector Figure B-1. Pin Assignments for the Main I/O Connector of DAS-1800HC Series Boards Connector Pin Assignments Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 89: Figure B-2. Pin Assignments For The Main I/O Connectors Of The Sta-1800Hc, Stp-100, And Conn-1800Hc

    B Side A Side AGND AGND CH00 HI CH16 HI CH00 LO/ CH32 HI CH16 LO/CH48 HI CH01 HI CH17 HI CH01 LO/CH33 HI CH17 LO/CH49 HI CH02 HI CH18 HI CH02 LO/ CH34 HI CH18 LO/CH50 HI CH03 HI CH19 HI CH03 LO/CH35 HI CH19 LO/CH51 HI...
  • Page 90: Sta-1800Hc And Conn-1800Hc 37-Pin D Connectors

    STA-1800HC and CONN-1800HC 37-Pin D Connectors The STA-1800HC and CONN-1800HC each contain four 37-pin, male, D connectors: J1, J2, J3, and J4. Pin layouts and assignments for these connectors are shown in Figure B-3, Figure B-4, Figure B-5, and Figure B-6.
  • Page 91: Figure B-5. Connector J3

    01 - +5V SSHO - 20 02 - TGOUT NC - 21 03 - DO7 DO6 - 22 04 - DO5 DO4 - 23 05 - DI3 DI2 - 24 06 - DI1/TGIN DI0/XPCLK - 25 07 - DGND NC - 26 08 - NC DAC1 - 27 09 - DAC0...
  • Page 92: Driverlinx Configuration Notes

    Counter/Timer Subsystem — describes some of DriverLINX counter/timer functions. Configuration The following section describes detailed information about how DriverLINX implements features of the Keithley DAS-1800HC A/D boards. Configuration Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 93: Model

    In this section, “DAS-1800HC” refers to all models in the Note: DAS-1800HC Series. “DAS-1801” refers to the models with low range analog input, while “DAS-1802” refers to the models with high range analog input. A suffix, such as “HC,” designates models with certain features.
  • Page 94: Address

    The default address used by all DAS-1800 boards is 768 decimal or 0 × 300 hex. If you have more the one Keithley board or another peripheral card at the same address, you will have to change the DIP switch settings for the device address on the board.
  • Page 95: Ai Irq

    AI IRQ You must select an interrupt request level to support IRQ or DMA mode data transfer. Valid IRQ levels are: 3, 5, 7, 10, 11, or 15. Two devices can share interrupt lines only if not used simultaneously. AI DMA 1, AO DMA 1 You must select DMA and IRQ levels to support DMA mode data transfer for analog input.
  • Page 96: Number Of Exp-1800S

    Number of EXP-1800s You can expand the number of single-ended analog input channels connected to your DAS-1800 board by using one to sixteen EXP-1800 expansion boards. Each EXP-1800 is a 1-to-16 multiplexer that replaces one onboard channel with sixteen expansion channels. Configure your DriverLINX Logical Device to use the additional channels by entering the number of EXP-1800s here.
  • Page 97: Implementation Notes

    Device Only the DAS-1800AO boards support DMA transfer of data for Analog Output tasks. The following table summarizes the operations implemented for each of the supported modes of the DriverLINX subsystem using the Keithley DAS-1800 boards. DriverLINX Configuration Notes Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 98: Table C-2. Allowed Operations And Events For Supported Subsystem Modes

    Table C-2. Allowed Operations and Events for Supported Subsystem Modes Subsystem Events Mode Operation Timing Start Stop Analog Input Polled Start rate, dig, null cmd, dig, null null, TC, dig Interrupt Start, Stop, Status rate, dig cmd, dig cmd, TC, dig Start, Stop, Status rate, dig cmd, dig...
  • Page 99: Analog Input Subsystem

    The following list explains the Event abbreviations in the preceding table: null — Null or None Event when a Service Request doesn’t require an event. cmd — Command Event when DriverLINX starts or stops a task on software command. TC — Terminal Count Event when DriverLINX processes all data buffers once.
  • Page 100: Internal Clocking

    Internal Clocking Specify internal clocking using a Rate Timing Event as a rate generator (RATEGEN) on Logical Channel 0 with an internal source. For hardware independence, the application may specify the clock channel using the symbolic constant, DEFAULTTIMER, which always uses the Logical Channel assigned by hardware for analog input.
  • Page 101: External Clocking

    External Clocking Specify external clocking using a Rate Timing Event on channel 0 with an external clock source specified. For hardware-independence, you can specify the hardware external clock channel by the symbolic constant, DI_EXTCLK. Connect the external clock source to XPCLK [44]. The hardware external clocking feature of the DAS-1800 supports positive or negative active edge clocking.
  • Page 102: Analog Input Multiplexer

    Select BURST mode for the Timing Event and set the onCount to 0. This represents zero time between sampling each channel (simultaneous sampling). Refer to the appropriate hardware user’s manual for cabling requirements. Analog Input Multiplexer The EXP-1800 Input Multiplexers can expand the number of physical channels to 256 single-ended analog input channels.
  • Page 103: Table C-3. Table Of Logical Channel Numbers For Eight External Exp-1800 Multiplexers

    To determine the DriverLINX Logical Channel number for an EXP-1800 Multiplexer channel, use the following formula or refer to the following table. Note that DriverLINX uses a 0-based numbering scheme for all analog input channels and “a/d chan” refers to the native physical channel on a DAS-1800 where you attached the mux.
  • Page 104: Data Coding

    Table C-3. Table of Logical Channel Numbers for Eight External EXP-1800 Multiplexers (cont.) Native Chan etc. Mux # Input Chan # Data Coding The DAS-1800 converts the analog input signal data and returns its value in an integer format. For bipolar mode, the hardware returns A/D data as 2’s complement in the range of -2048 to 2047 for 12-bit and -32768 to 32767 for 16-bit A/Ds.
  • Page 105: Table C-4. Input Voltage And A/D Binary Value

    Table C-4. Input Voltage and A/D Binary Value Input Voltage A/D Binary Value -10.0V -2048 0.0V 0 +0.00488V 1 +9.99512V 2047 For a 12-bit A/D at a gain of 1 in the 0 to +10V range (unipolar mode), the voltage resolution would be: ----------- - 2.44mV 4096...
  • Page 106: A/D Conversion Delay

    Table C-6. Input Voltage and A/D Binary Value Input Voltage A/D Binary Value -100.0mV -2048 0.0V 48.8µV 2046 +99.9512mV 2047 A/D Conversion Delay The maximum A/D conversion delay is 833 seconds (13 min, 53 sec) or a minimum sampling rate of 0.0012Hz with a 5MHz master clock input frequency.
  • Page 107 The DAS-1800AO models offer two channels of multiplying 12-bit D/A converters that support DMA mode of data transfer at continuous output rates of up to 500kHz. A 2K sample FIFO buffer allows continuous, gap-free data transfer for data buffers larger than 2K. Alternatively, for data buffers smaller than 2K samples, the AO task can “free-run”...
  • Page 108: Analog Output Initialization

    Analog Output Initialization By default, the Analog Output subsystem loads zero into both D/A channels forcing the initial output voltage to zero. You can specify a different initial output voltage using the DriverLINX Configuration Control Panel. Internal Clocking Specify internal clocking using a Rate Timing Event as a rate generator (RATEGEN) on Logical Channel 0 (channel 1 for DAS-1800AO) with an internal source.
  • Page 109: External Clocking

    Although both SRs share the same clock source, they are otherwise logically independent of each other. Your application must manage and respond to each Service Request separately. If the AI task terminates before the AO task, the AO task will still be logically active, but the clock will be send timing pulses to the AO task until the next AI task starts.
  • Page 110: Data Coding

    Data Coding The output range of each D/A channel is fixed at ±10V for all DAS-1800 boards except the DAS-1800AO which has two software programmable ranges; ±5V and ±10V. The DAS-1800HC uses split binary data coding for the two 12-bit D/A channels.
  • Page 111: D/A Conversion Delay

    Table C-7. Binary Values and D/A Voltage Binary Value D/A Output Voltage -2048 -5.0000V 0 0.0000V 1 +2.4414mV +2047 +4.9976V D/A Conversion Delay The DAS-1800HC and the other DAS-1800 models cannot support direct hardware timing of D/A output. D/A conversions are timed using either software polling of the analog input counter/timer or interrupts from A/D end-of-conversion signal.
  • Page 112: D/A Data Lost

    The D/A conversion delay to output a periodic waveform with a given number of samples per period is simple to determine. For example, the conversion delay for a 200Hz wave with 100 samples/cycle is ----------------------- - --------------- - frequency 200Hz D/A conversion delay ----------------------------- 50ms...
  • Page 113: Digital Input Initialization

    You can use the external multiplexer outputs MUX4-7 as pseudo digital outputs for applications requiring more than four digital outputs. Since the channel/gain QRAM controls the state of these outputs, changes to the state of these lines during active analog input tasks is not pos0sible as it is for DO 0-3.
  • Page 114: Digital I/O Data Lost

    Digital I/O Data Lost The hardware cannot detect Digital I/O data overruns so DriverLINX does not send the DL_DATALOST message when digital overruns occur. Counter/Timer Subsystem The DAS-1800 uses an Intel 8254 Programmable Interval Timer that consists of three internal 16-bit counters, Counter 0, Counter 1, and Counter 2.
  • Page 115 Index AI IRQ setting in DriverLINX C-4 allowed operations in DriverLINX C-7 analog Numerics input section 2-3 2’s complement 2-3, A-1 output 2-17 82C54 counter/timer 2-11 output signals, connecting 4-15 analog input multiplexer input programming in DriverLINX C-11 analog input subsystem programming in DriverLINX C-8 analog output initialization A/D channels...
  • Page 116 differential input 4-12 digital control signal C/C++ DOSTB 4-16 function libraries for programming in 1-2 SSHO 4-15 cable TGIN 4-15 C-16MB1 1-4, 4-8 TGOUT 4-15 C-1800 1-4, 4-7 XPCLK 4-16 CAB-1800 Series 1-4, 4-4, 4-6, 4-9 digital control signals 4-15 red wire marker 4-4 digital I/O signals 4-15 calibration...
  • Page 117 data coding documentation input programming in DriverLINX C-13 for DriverLINX installation 3-3 output programming in DriverLINX installing in DriverLINX 3-4 C-19 DOSTB data conversion modes 2-9 connecting 4-16 data transfer modes 2-16 using 2-18 DC/DC converter 2-22 DriverLINX default analog I/O panel base address 3-5 description 1-3 Delphi...
  • Page 118 2-18 external gating high-level 2-5 input programming in DriverLINX C-10 low-level 2-5 external triggering installing input programming in DriverLINX C-10 DAS-1800HC Series board 3-6 output programming in DriverLINX interfaces C-18 for DriverLINX installation 3-3 internal clock source 2-11 internal clocking...
  • Page 119 MB Series modules 1-4 CONN-1800HC connectors J1 to J4 B-4 MB01 backplane 1-4, 4-8 CONN-1800HC main I/O connector B-3 MB01 backplanes, attaching 4-8 DAS-1800HC Series main I/O connector mode burst 2-9 main I/O connector B-2 data acquisition supported in STA-1800HC connectors J1 to J4 B-4...
  • Page 120 1-2 XPCLK 2-18 test points 6-1 signal-conditioning modules 1-4 TGIN signals connecting 4-15 DAS-1800HC Series main I/O connector using 2-18, 2-19 TGOUT STA-1800HC main I/O connector 4-3 connecting 4-15 simultaneous sample and hold using 2-19...
  • Page 121 timing relationships, paced and burst 2-10 transducer use 2-6 Visual Basic trigger function libraries for programming in 1-2 acquisition volt meter about-trigger 2-14 in analog I/O panel 5-1 post-trigger 2-15 voltage output pre-trigger 2-14 using analog I/O panel 5-1 external digital 2-13 internal 2-12 Turbo Paxcal function libraries for programming in 1-2...
  • Page 122 Specifications are subject to change without notice. All Keithley trademarks and trade names are the property of Keithley Instruments, Inc. All other trademarks and trade names are the property of their respective companies. Keithley Instruments, Inc. 28775 Aurora Road • Cleveland, Ohio 44139 • 440-248-0400 • Fax: 440-248-6168 1-888-KEITHLEY (534-8453) •...

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