Measurement-computing CIO-DAS16 User Manual

CIO-DAS16 CIO-DAS16/FUSER’S MANUALRevision 8October, 2000

A BP-37 will bring the signals to a backplate with a 37 pin male connectormounted in it.A standard C37FF-2 may be run alongside the analog connector t

FLOATING DIFFERENTIALA floating differential input is two wires from the signal source and a10K ground reference resistor installed at the CIO-DAS16 i

2.3 ANALOG OUTPUTSAnalog outputs are voltage outputs which can be connected to any device which will record, display or be controlled by avoltage.The

3 ANALOG CONNECTIONS 3.1 ANALOG INPUTSAlthough complete coverage of this topic is well beyond the scope of this manual, the following section prov

Differential InputsDifferential inputs measure the voltage between two distinct input signals. Within a certain range (referred to as thecommon mode r

Before moving on to the discussion of grounding and isolation, it is important to explain the concepts of common mode,and common mode range (CM Range)

If both AC and DC readings are 0.00 volts, you may have a system with common grounds. However, since voltmeterswill average out high frequency signals

change your system grounding configuration or add isolation signal conditioning. (Please look at our ISO-RACK andISO-5B-series products to add electr

3.3.1 Common Ground / Single-Ended InputsSingle-ended is the recommended configuration for common ground connections. However, if some of your inputs

3.3.3 Common Mode Voltage < +/-10V/Single-Ended Inputs This is not a recommended configuration. In fact, the phrase common mode has no meaning in a

LIFETIME WARRANTYEvery hardware product manufactured by Measurement Computing Corp. is warranted against defects in materials or workmanship forthe li

3.3.5 Common Mode Voltage > +/-10V The CIO-DAS16/F will not directly monitor signals with common mode voltages greater than +/-10V. You will eith

3.3.7 Isolated Grounds / Differential InputsOptimum performance with isolated signal sources is assured with the use of the differential input setting

4 CIO-DAS16 CONTROL & DATA REGISTERS 4.1 INTRODUCTIONThe CIO-DAS16 is controlled and monitored by writing to and reading from 20 consecutive 8

Table 4-2. Register SummaryConfigure 8255None - No read back on 8255BASE + 19Port C OutputPort C InputBASE + 18Port B OutputPort B Input BASE + 17Port

BASE ADDRESS +1A/D8A/D7A/D6A/D5A/D4A/D3A/D 2A/D1MSB01234567A Read-only register.On read, the most significant A/D byte is read.4.3 CHANNEL MUX SCAN LI

READ:The signals present at the inputs are read as one byte, the digital input data being contained in the four least significantbits. The pins 25 (d

D/A 1 REGISTERSBASE ADDRESS +6XXXXD/A12D/A11D/A10D/A901234567BASE ADDRESS +7 D/A8D/A7D/A6D/A5D/A4D/A3D/A2D/A101234567WRITE ONLY:Each 12-bit D/A ou

4.7 DMA, INTERRUPT & TRIGGER CONTROLBASE ADDRESS + 9TS0TS1DMADon’t CareIR1IR2IR4INTE01234567A read and write register.READ OR WRITE:INTE = 1, Inte

When TRIG0 = 0, the external trigger at pin 25 has no effect on the GATEs of counter 1 and 2. See Figure 4-1 for a block diagram of the Pacer Clock lo

82C54 COUNTER 2 DATABASE ADDRESS +14D0D1D2D3D4D5D6D701234567The three 82C54 counter/timer data registers may be written to and read from. Because eac

285 SPECIFICATIONS ...25 4.11 24-LINE DIGITAL I/O REGISTERS...

Port C may be used as one 8-bit port of either input or output, or it may be split into two 4-bit ports which can beindependently input or output. Th

The two groups of ports, group A and group B, may be independently programmed in one of several modes. The mostcommonly used mode is mode 0, input /

5 SPECIFICATIONS Power consumption+5V: 780 mA typical, 975 mA max+12V: 20 mA typical, 25 mA max-12V: 27 mA typical, 34 mA maxAnalog input secti

Analog OutputD/A converter type MX7548Resolution 12 bitsNumber of channels 2Output Ranges 0 to 5V using on-board reference, ±10V range using external

Counter sectionCounter type 82C54Configuration 82C54 device. 3 down-counters, 16 bits eachCounter 0 - Independent user counterSource: Internal 100 kHz

EC Declaration of ConformityWe, Measurement Computing Corp., declare under sole responsibility that the product:DescriptionPart NumberCIO-DAS16/Fto wh

Measurement Computing Corporation16 Commerce Boulevard,Middleboro, Massachusetts 02346(508) 946-5100Fax: (508) 946-9500E-mail: info@measurementcomputi

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1 INSTALLATION Before you open your computer and install the board, install and run InstaCal™, the installation, calibration and testutility inclu

1.3 DMA LEVEL SELECTWhat kind of computer are you installing the board in? If it is an old XT then there are only two DMA levels availableand level 3

1.6 D/A CONVERTER REFERENCE JUMPER BLOCKThere is a jumper block with 10 pins (2 rows of 5 each) located top center on the board. This block allows yo

Table 1-1. Range Select Switch Positions SEE EQUATION0.5 < USER < 20LLLLR0.244mV / bit0 to 1V+/- 0.5V10RLLRL0.488mV / bit0 to 2 V+/- 1V5RLRLL1.2

2 SIGNAL CONNECTION 2.1 CONNECTOR DIAGRAMThe CIO-DAS16 analog connector is a 37-pin, D-type connector accessible from the rear of the PC through t