Measurement-computing CIO-DAS16/M1 Manuel d'utilisateur

CIO-DAS16/M1User’s ManualRevision 4May, 2000

6Figure 3-2. Cable Shield Grounding3.2.5 Floating Signal SourceA floating signal source is defined as the low signal having no reference to earth gro

7Figure 3-4. Wrong Way to Connect a Signal3.3 DIGITAL OUTPUTS & INPUTSAll the digital outputs and inputs on the CIO-DAS16/M1 are TTL level. TTL i

8expansion backplate. If you need compatibility with this product, we recommend that you purchase theBP40-37 cable when using the digital connector, P

9Figure 3-6. 40-Pin Digital Connector (P5) Pin Out39 NC37 CLK035 GATE033 OUT031 CLK129 GATE127 OUT125 CLK223 GATE221 OUT219 PORT B017 PORT B

104. REGISTER ARCHITECTURE4.1 DATA TRANSFERSThe CIO-DAS16/M1 bus interface is a PC/AT bus interface. A/D data can be transferred via REP-INSW(high sp

11For the programmer who wants to write to the C/G memory directly, this means that you must arrange theC/G scan as follows:Order to Execute Channel/G

124.5 DT-CONNECTThe DT-Connect connector (P4) at the top of the CIO-DAS16/M1 board is included primarily for usewith the MEGA-FIFO huge sample buffer

13Table 4-2. Bit WeightsBIT POSITION DECIMAL VALUE HEX VALUE01 112 224 438 8416 10532 20664 407 128 8To write control or data to a register, the indiv

144.6.1 A/D Data & Channel RegistersNote: Although the bus interface is 16 bits wide, only the A/D data and channel registers should be readas a 1

15IRQDATA is set according to the condition of the S1 and S0 bits of BASE + 5 register. This bit is set to 1when: S1 S0 0 0 Single A/D conversio

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16READThe signals present at the inputs are read as one byte, the most significant four bits of which are alwayszero. The pins 25 (DIN 0) and 24 (DIN

17IRQ LEVEL L2, L1 & L0: Set the PC system bus IRQ level. L2 L1 L0 SYSTEM IRQ LEVEL SELECTED 0 0 0 IRQ 10 0 0 1 IRQ 1

18A register stores the most recently written C/G memory address and this C/G element becomes theRESTART ADDRESS. Each time the restart address is rea

19 Decimal codes are for upper four bits only. In other words, this is the correct byte to write if the channelis equal to zero. Channel values can be

20Pacer Clock Data & Control Registers 8254 COUNTER 0 DATA - User accessible counter. BASE ADDRESS + C76543210D8 D7 D6 D5 D4 D3 D2 D1 8254 COUNTER

21Table 4-4. Digital I/O and Counter RegistersADDRESS READ FUNCTION WRITE FUNCTIONBASE +400h Port A Input of 82C55 #1 Port A Ou

22OUTPUT PORTSIn 82C55 mode 0 configuration, ports configured for output hold the output data written to them. Thisoutput byte can be read back by rea

23Table 4-5. 82C55 Programming CodesD4 D3 D1 D0 HEX DEC A CU B CL0 0 0 0 80 128 OUT OUT OUT OUT0 0 0 1 81 129 OUT OUT OUT IN0 0 1 0 82 130 OUT OUT IN

245. SPECIFICATIONSPower consumption+5V 1.8A typ, 2.7 A max-5V 55mA typ, 70mA max+12V 70mA typ, 91mA max-12V 60mA typ, 82mA maxAnalog input sectionA/D

25Digital Input / OutputDigital Type (Main Connector)Input: 74LS244Output: 74LS175Configuration Two dedicated ports, 4 input and 4 outputOutput Hi

iiiTable of Contents1. SOFTWARE INSTALLATION ...

26Clock input frequency 10Mhz maxHigh pulse width (clock input) 30ns minLow pulse width (clock input) 50ns minGate width high 50ns minGate width low 5

276. ELECTRONICS AND INTERFACINGThis short, simple introduction to the electronics most often needed by I/O board users covers a few keyconcepts.6.1

28For example, the CIO-DAS16 has a common mode plus signal range of 11.5 volts, common mode not toexceed 10 volts. This specification is illustrated g

29not bother to connect a volt meter to the floating input of an 82C55. It will show you nothing of meaning.In input mode the 82C55 is in a 'high

30The most convenient way to use solid state relays is to purchase a Solid State Relay Rack. A SSR Rack isa circuit board with input amplifiers to swi

31The sum of the voltage drops around a circuit is equal to the voltage drop for the entire circuit.Implied in the above is that any variation in the

32terminals (12 - 22 AWG). Designed for table top, wall or rack mounting, the board provides prototype,divider circuit, filter circuit and pull-up re

33EC Declaration of ConformityWe, Measurement Computing Corp., declare under sole responsibility that the product:CIO-DAS16/M1 analog and digital I/O

Measurement Computing Corporation 10 Commerce Way Suite 1008 Norton, Massachusetts 02766 (508) 946-5100 Fax: (508) 946-9500 E-mail: [email protected]

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11. SOFTWARE INSTALLATIONThe board has a variety of switches and jumpers to set before installing the board in your computer. Byfar the simplest way t

22.2 USER-COUNTER CLOCK/CHAINING JUMPERSThe CIO-DAS16/M1 has three counters available to the user at the digital connector, P5. (A fourthcounter is a

32.4 INSTALLING THE CIO-DAS16/M1 IN THE COMPUTER1. Turn the power off.2. Remove the cover of your computer. Please be careful not to dislodge any of

43. SIGNAL CONNECTIONS3.1 INTRODUCTIONThere are three connectors on th CIO-DAS16/M1. The 37-pin connector, P1, on the rear mounting plate isprimarily

53.2.1 Analog InputsThe CIO-DAS16/M1 has eight differential analog input channels. Each channel has a signal-high inputand a signal-low input. The mea