Measurement Computing CIO-DIO48 - Manual (Page 8)

CIO-DIO48 User's Guide Installing the CIO-DIO48
Unpacking the CIO-DIO48
As with any electronic device, you should take care while handling to avoid damage from static
electricity. Before removing the CIO-DIO48 from its packaging, ground yourself using a wrist strap or by
simply touching the computer chassis or other grounded object to eliminate any stored static charge.
If any components are missing or damaged, notify Measurement Computing Corporation immediately by
phone, fax, or e-mail:
ƒ Phone: 508-946-5100 and follow the instructions for reaching Tech Support.
ƒ Fax: 508-946-9500 to the attention of Tech Support
ƒ Email:
[email protected]
Installing the software
Refer to the Quick Start Guide for instructions on installing the software on the Measurement Computing Data
Acquisition Software CD. This booklet is available in PDF at
www.mccdaq.com/PDFmanuals/DAQ-Software-
Quick-Start.pdf .
Configuring the base address switch
The CIO-DIO48 employs the PC bus for power, communications and data transfer. It draws power from the
PC, monitors the address lines and control signals, responds to its I/O address, and receives and places data on
the eight data lines.
The CIO-DIO48 has one bank of base address-select switches, and one wait-state jumper. Verify their settings
before installing the board in your computer.
Base address switch
The easiest way to set the base address is to let InstaCal show you the correct settings. However, if you are
already familiar with setting ISA base addresses, you may use the base address switch description below to
guide your base address selection.
The base address is the starting location that software writes to when communicating with the CIO-DIO48. A
set of DIP switches is used to set the base address. By placing the switch down, the CIO-DIO48 address decode
logic is instructed to respond to that address bit. A complete address is constructed by calculating the HEX or
decimal number which corresponds to all the address bits the board has been instructed to respond to.
The board is shipped with the base address set to 300 hex (see ) . Unless there is already a board in your
system that uses address 300 hex (768 decimal), leave the switches as they were set at the factory.
Figure 1
Figure 1. Base address switch
SW
A9
A8
A7
A6
A5
A4
A3 HEX
200
100
80
40
20
10
08
9 8 7 6 5 4 3
In the default configuration, addresses 9 and 8 are down, and all others are up. Address 9 = 200 hex
(512 decimal), and address 8 = 100 hex (256 decimal). When added together they equal 300 hex (768 decimal).
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