Measurement-computing PC104-DAS08 Manuel d'utilisateur Page 1

PC104-DAS08User’s ManualRevision 4September, 2001

2 SIGNAL CONNECTIONS 2.1 CONNECTOR DIAGRAMSThe PC104-DAS08 analog connector is a 40-pin header connector.The connector accepts female 40-pinheader

Figure 2-3. BP40-37 Adapter Cabling 2.2 ANALOG INPUTSAnalog inputs to the PC104-DAS08 are single-ended.CAUTION - PLEASE READMeasure the voltage betwe

3 REGISTER ARCHITECTURE 3.1 CONTROL & DATA REGISTERSThe PC104-DAS08 is controlled and monitored by writing to and reading from eightconsecutiv

Table 3-2. Board RegistersCounter ControlNot usedBASE + 7Load Counter 2Read Counter 2BASE + 6Load Counter 1Read Counter 1BASE + 5Load Counter 0Read Co

READOn read the most significant A/D byte is read.The A/D Bits code corresponds to the voltage on the input according to Table 4-3.Table 3-3. A/D Bit

INTE = 1 enables interrupts (positive edge triggered) onto the PC bus IRQ selectedvia the IRQ jumper on the PC104-DAS08.INTE = 0 disables the passing

The data in the counter read register, and the action taken on the data in a counterload register, is dependent upon the control code written to the c

3.7 COUNTER TIMERThe 82C54 counter timer chip can be used for event counting, frequency and pulsemeasurement and as a pacer clock for the A/D converte

counter 1 would then be wired to the interrupt input (pin 10). The slowest ratewould then be once every 17 minutes.3.8 DIGITAL INPUTThe digital input

4 SPECIFICATIONS Power Consumption+5V: 130 mA typical, 185 mA max+12V: 18 mA typical, 25 mA max−12V: 12 mA typical, 18 mA maxAnalog Input Section

Your new Measurement Computing product comes with a fantastic extra — Management committed to your satisfaction! Thank you for choosing a Measurement

Digital Input / OutputDigital Type (Main connector)Output: 74LS273Input: 74LS244Configuration 4 fixed output bits, 3 fixed input bitsNumber of ch

For Your Notes17

For Your Notes18

EC Declaration of ConformityWe, Measurement Computing Corporation, declare under sole responsibility that theproduct:DescriptionPart NumberAnalog Inpu

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154 SPECIFICATIONS ...14 3.10 TRIGGER & INTERRUPT LOGIC...14 3.9 DIGITAL OUTPUT...

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1 INSTALLATION 1.1 SOFTWARE INSTALLATIONBefore you open your computer and install the board, install and run InstaCal, theinstallation, calibratio

1.2 .1 Setting the Base Address SwitchesSelect a base address from those available in your system. The PC104-DAS08 useseight addresses.Set the switch

Table 1-1. PC I/O AddressesSERIAL PORT3F8-3FFEGA2B0-2BFFLOPPY DISK3F0-3F7PARALLEL PRINTER270-27FSERIAL PORT3E8-3EFALT BUS MOUSE23C-23FCGA3D0-3DFBUS MO

Figure 1-3. Interrupt Jumper BlockTable 1-2. IRQ AssignmentsNote: IRQ8-15 are AT onlyLPTIRQ7UNASSIGNEDIRQ15FLOPPY DISKIRQ6HARD DISKIRQ14HARD DISK (

1.2 .3 RANGE SWITCH SETTINGThe DIP switch labeled S2 controls the range (gain) settings for both bipolar ranges(±5V and ±10V), and for the unipolar r