Measurement-computing CIO-DAS16/M1/16 User Manual

CIO-DAS16/M1/16High Speed Analog Inputs & Digital I/OUser’s GuideRevision 4November, 2000

3.5 DIGITAL I/O CONNECTORA second connector at the rear of the board contains signals from an 82C55. These 24 bits of digital I/O are availablefor o

such scheme would be low speed and therefore store data to disk, obviating the need to use DT-Connect to store dataon a memory board.Please see the da

4 SOFTWARE There are three common methods for generating software for the CIO-DAS16/M1/16. These are: Writing customsoftware using our Universal

5 REGISTER MAP 5.1 DAS16/M1/16 REGISTER MAPTable 5-1. DAS16/M1/16 Register Descriptions8255 Control RegisterNone. No 8255 Read-backBASE+403h8255 Por

READOn read, the 16-bit ADC value is presented in 'left-justified' format, with the most-significant ADC bit at position#15; the least s

WRITEDO0DO1DO2DO3Not UsedNot UsedNot UsedNot Used01324567All of the four bits are latched TTL outputs.The WRITE to this register also clears external

INT4:1 - Interrupt selectionTable 5-2. Interrupt Coding151111140111Not Available1011120011111101100101Not Available1001Not Available000171110601105101

5.7 BURST LENGTH, EXTERNAL TRIGGER, CTR0/TRG0BASE ADDRESS +Ah Example, 30Ah, 778 DecimalREAD/WRITETRG0CTR0TRGSELTRGPOLBL0BL1BL2BL301234567BL3:0 - Bu

RCG - Residual Counter Gate. 0 = disabled, 1 = enabled. The Residual Counter Gate gates Counter 0 'on' to allow thesoftware to count the re

6.9.4 8254 CONTROL REGISTER BASE + Fh Example, 30Fh, 783 decimalWRITE ONLYD1D2D3D4D5D6D7D801324567The control register is used to set the operating Mo

LIFETIME WARRANTYEvery hardware product manufactured by Measurement Computing Corp. is warranted against defects inmaterials or workmanship for the li

Table 5-5. 82C55 Registers Configure 82C55 None. No read back on 82C55BASE + 403Port C OutputPort C InputBASE + 402Port B OutputPort B InputBASE + 40

7 SPECIFICATIONS Analog input sectionA/D converter type Datel ADS-30356 SubrangingResolution 16 bitsProgrammable ranges ±5V, ±2.5V, ±1.25V, ±.625V,

Input High 2.0 volts min, 5.5 volts absolute maxInput Low 0.8 volts max, −0.5 volts absolute minInterrupts Programmable levels 2 to 7, 10 to12, 14, 15

EnvironmentalOperating temperature range 0 to 60°CStorage temperature range −40 to 100°CHumidity 0 to 90% non-condensingPower consumption+5V: Operatin

For your notes.20

EC Declaration of ConformityWe, Measurement Computing Corp., declare under sole responsibility that the product:DescriptionPart NumberHigh speed analo

Measurement Computing Corporation16 Commerce Boulevard,Middleboro, MA 02346(508) 946-5100Fax: (508) 946-9500E-mail: [email protected].

Table of Contents177 SPECIFICATIONS ...166 CALIBRATION AND TEST ...

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1 INTRODUCTIONCIO-DAS16/M1/16 sets the standard for high speed, 16-bit data acquisition boards for ISA bus compatible computers.The board provides 8

3 SIGNAL CONNECTIONS There are two connectors on the CIO-DAS16/M1/16. The 37-pin connector which extends through the mounting plateand extends o

3.2 ANALOG INPUTSConnect analog inputs to the board as shown in the following sections. Pay close attention to cabling and groundingof the shield. F

3.3.3 GROUNDED SIGNAL SOURCEA grounded signal source is defined as having the signal low referenced to chassis ground. If an instrument has onlytwo po

3.3.5 AVOID GROUND LOOPSFigure 3-4 shows the wrong way to connect a shielded cable. It creates a ground loop. Any current flowing betweengrounds can i