PC-CARD-DAS16/12AO Analog I/O and Digital I/O Board User’s Guide Document Revision 1, April, 2007 © Copyright 2007, Measurement Computing Corporation
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Table of Contents Preface About this User's Guide .......................................................................................................................7 What you will learn from this user's guide .........................................................................................................7 Conventions in this user's guide .........................................................................................................................7 Where to find more information....
PC-CARD-DAS16/12AO User's Guide Power consumption ..........................................................................................................................................24 Miscellaneous ...................................................................................................................................................24 Environmental ..............................................................................................................................................
Preface About this User's Guide What you will learn from this user's guide This user's guide explains how to install, configure, and use the PC-CARD-DAS16/12AO so that you get the most out of its analog I/O, digital I/O and counter features. This user's guide also refers you to related documents available on our web site, and to technical support resources.
Chapter 1 Introducing the PC-CARD-DAS16/12AO Overview: PC-CARD-DAS16/12AO features The PC-CARD-DAS16/12AO is a data acquisition and control board for IBM PC compatible computers with PCMCIA type II slots. The PC-CARD-DAS16/12AO provides 16 single-ended or 8 differential analog inputs, 12-bit A/D resolution, two analog outputs, four digital I/O lines, and three 16-bit down counters. The analog input range is fully programmable in one of four bipolar ranges.
PC-CARD-DAS16/12AO User's Guide Introducing the PC-CARD-DAS16/12AO Software features For information on the features of InstaCal and the other software included with your PC-CARDDAS16/12AO, refer to the Quick Start Guide that shipped with your device. The Quick Start Guide is also available in PDF at www.mccdaq.com/PDFmanuals/DAQ-Software-Quick-Start.pdf. Check www.mccdaq.com/download.htm for the latest software version.
Chapter 2 Installing the PC-CARD-DAS16/12AO What comes with your PC-CARD-DAS16/12AO shipment? The following items are shipped with the PC-CARD-DAS16/12AO. Hardware PC-CARD-DAS16/12AO Additional documentation In addition to this hardware user's guide, you should also receive the Quick Start Guide (available in PDF at www.mccdaq.com/PDFmanuals/DAQ-Software-Quick-Start.pdf).
PC-CARD-DAS16/12AO User's Guide Installing the PC-CARD-DAS16/12AO Unpacking the PC-CARD-DAS16/12AO As with any electronic device, you should take care while handling to avoid damage from static electricity. Before removing the PC-CARD-DAS16/12AO from its packaging, ground yourself using a wrist strap or by simply touching the computer chassis or other grounded object to eliminate any stored static charge.
PC-CARD-DAS16/12AO User's Guide Installing the PC-CARD-DAS16/12AO 2. Select the Hardware tab and click on the Device Manager button. 3. Verify that "PCMCIA adapters" is listed in the Device Manager. If you don’t find this entry, or if the properties for the adapter indicate "this device is not working," you need to install or update your PCMCIA adapter drivers. o If the PCMCIA adapter is not listed, use the Add New Hardware Wizard to install PCMCIA support.
PC-CARD-DAS16/12AO User's Guide Installing the PC-CARD-DAS16/12AO Cabling Measurement Computing offers two cables for connecting the PC-CARD-DAS16/12AO to a screw-type terminal board or other signal conditioning interface board: The CPCC-50F-39 cable: 39 inches (990 mm) long; compatible with standard 50-pin screw terminal products. The CPCC-50M-4 cable: four-inch long adapter cable; required when using a C50FF-x series cable.
PC-CARD-DAS16/12AO User's Guide Installing the PC-CARD-DAS16/12AO Caution! Do not exceed the input specifications. There are no socketed or user serviceable parts in a PCCARD-DAS16/12AO. Check the specifications and input voltages before connecting any signals. CPCC-50F-39 49 50 50 Key 1 Dot 1 2 50-pin micro connector. Connect to the I/O connector on the PC-CARD with the dot facing UP. 50-pin female IDC connector. Figure 6.
PC-CARD-DAS16/12AO User's Guide Installing the PC-CARD-DAS16/12AO C50FF-x 2 1 50 49 The red stripe identifies pin # 1 50-pin female IDC connector 2 1 50 49 50-pin female IDC connector Figure 8. C50FF-x cable Details on the C50FF-x cable are available on our web site at www.mccdaq.com/cbicatalog/cbiproduct.asp?dept_id=104&pf_id=136.
Chapter 3 Programming and Developing Applications After following the installation instructions in Chapter 2, your board should now be installed and ready for use. In general there may be no correspondence among registers for different boards. Software written at the register-level for other models does not function correctly with your board. Programming languages Measurement Computing’s Universal Library provides access to board functions from a variety of Windows programming languages.
Chapter 4 Functional Details The 12-bit A/D converter provides a resolution of 1/4096 parts of full scale. The smallest reading of full scale (1 part in 4096) is called a Least Significant Bit (LSB). Four bipolar and four unipolar ranges may be set by software. These are: Analog input ranges Bipolar Unipolar Range Resolution Range Resolution ±10 V ±5 V ±2.5 V ±1.25 V 4.88 mV 2.44 mV 1.22 mV 0.61 mV 0 to 10 V 0 to 5 V 0 to 2.5 V 0 to 1.25 V 2.44 mV 1.22 mV 0.
PC-CARD-DAS16/12AO User's Guide Functional Details Triggering and transfer A trigger begins an acquisition/transfer cycle. There are three ways to trigger a PC-CARD-DAS16/12AO: programmable pacer, software, or external. The trigger source selection is programmable. The programmable pacer is the product of two 16-bit counters dividing a 10 MHz or 1 MHz pulse derived from a 10 MHz crystal oscillator which can be used to trigger any number of paced conversions.
PC-CARD-DAS16/12AO User's Guide Functional Details Control Register BASE + 6h TRGPOL TRGSEL TRGCLR CLK2 CTR1 10K 5 GATE 1/10 1/10 Counter 1 39 CRT1 CLK 40 CTR1 GATE 5 10K OUT 41 CTR1 OUT 47 A/D INTERNAL PACER OUT CLK 0 CLK 1 GATE 10 MHz OSC CLK Counter 2 Counter 3 OUT OUT GATE Trigger Logic TS1 A/D Convert CLock 1 TS0 A/D PACER GATE 45 A/D EXTERNAL TRIGGER Control register BASE + 4h 0 3 2 MUX 1 0 44 Trigger Logic S/W CONVERT Figure 9.
Chapter 5 Specifications Typical for 25 °C unless otherwise specified. Specifications in italic text are guaranteed by design. Analog input Table 1. Analog input specifications A/D converter type Resolution Number of channels Input ranges A/D pacing (software programmable) A/D trigger sources A/D triggering modes A/D gate sources Burst mode Data transfer A/D conversion time Calibrated throughput Calibration ADS7804 12 bits 16 single-ended / 8 differential, software selectable ±10 V, ±5 V, ±2.5 V, ±1.
PC-CARD-DAS16/12AO User's Guide Specifications Table 3. Calibrated accuracy specifications (Note 1) Range Gain Error Offset Error DLE All ranges ±1.0 max ±1.0 max ±1.0 max ILE (Note 1) ±1.0 max Note 1: These are the intrinsic specifications of the ADC. Software calibration may introduce a small additional amount of linearity error. As shown in Table 3, total board error is a combination of gain, offset, differential linearity and integral linearity error.
PC-CARD-DAS16/12AO User's Guide Specifications Analog output section Table 6. Analog output specifications D/A converter type Resolution Number of channels Configuration Output Range D/A pacing Data transfer Throughput LTC1446 12 bits 2 Voltage output, single-ended ±10 V, ±5 V. Software selectable. Selected range applies to both channels. Software Programmed I/O System dependent. Using the Universal Library programmed output function (cbAout) in a loop in Visual Basic, a typical update rate of 5.
PC-CARD-DAS16/12AO User's Guide Specifications Digital input/output Table 9. DIO specifications Digital type Number of I/O Configuration Input low voltage Input high voltage Output low voltage (IOL = 4 mA) Output high voltage (IOH = -4 mA) Absolute maximum input voltage Power-up / reset state FPGA 4 One port, programmable 4 input / 4 output 0.8 V max 2.0 V min 0.32 V max 3.86 V min -0.5 V , +5.5 V Input mode (high impedance) Interrupt Table 10.
PC-CARD-DAS16/12AO User's Guide Specifications Frequency accuracy 50 ppm Note 2: If you are not driving the gate of User Counter 1, it is strongly recommended that it be connected to +5V (VDD). Power consumption Table 12. Power consumption specifications +5V quiescent 85 mA typical, 125 mA max Miscellaneous Table 13.
PC-CARD-DAS16/12AO User's Guide Specifications Table 17.
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