Measurement Computing PCI-DAS08, User Manual

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Chapter 1
Introducing the PCI-DAS08
Overview: PCI-DAS08 features
This manual explains how to configure, install, and use your PCI-DAS08 board. The PCI-DAS08 is a
multifunction measurement and control board designed to operate in computers with PCI bus accessory
slots.
The PCI-DAS08 board provides the following features:
ƒ Eight single-ended 12-bit analog inputs
ƒ 12-bit A/D resolution
ƒ Sample rates of up to 40 kHz
ƒ ±5V input range
ƒ Three 16-bit counters
ƒ Seven digital I/O bits (three input, four output)
ƒ
Connector compatible with Measurement Computing’s ISA-based CIO-DAS08 board
The PCI-DAS08 board is completely plug-and-play compliant, with no switches or jumpers to set.
Configuration is controlled by your system's plug-and-play software. A functional block diagram of the
PCI-DAS08 is shown here.
PCI
Controller
BADR1
Interrupt
Boot
EEPROM
Counter 2
Clock
(33 MHz/8)
Interrupt
Control
Decode/Status
Bus
Timing
Channel Select
Output Clock2
EXT_INT
Controller FPGA and Logic
LOCAL BUS
PCI BUS (5 V, 32-BIT, 33 MHZ)
Input
Port
C
ont
ro
l Input (2:0)
Digital I/O
82C54
16-bit Counters
Input Clock2
Counter 0
Co
n
tr
o
l
Counter 1
Counter 2
Input Clock0
Gate0
Output Clock0
Input Clock1
Gate1
Output Clock1
Gate2
Output Clock2
Output
Port
Output (3:0)
ADC and MUX
Control
10 Volt
Reference
Channel Select
Gain and Offset Cal
Mux
Analog In
8 CH S.E.
Buffer
12-bit, 100 kHz
Start EOC
Buffer
BADR2
A/D
Control
Figure 1-1. PCI-DAS08 block diagram
1-1