Measurement Computing Personal488 rev.3.0 For DOS & Windows 3.Xi - Manual (Page 55)

8B. Installation & Configuration II. SOFTWARE GUIDES - 8. Driver488/DRV
II-40 Personal488 User’s Manual, Rev. 3.0
allow the user to continue onto the configuration of external devices via or to view a graphic
representation of the interface card with the selected settings via .
Configuration of IEEE 488 Interfaces
The Driver488/DRV supports
two types of interfaces: IEEE
and Serial (COM). The
following Driver488/DRV
figure displays the configuration
screen of an MP488CT
IEEE 488.2 interface.
To add another IEEE interface,
select
. If you will be
using more than one interface,
refer to the final topic “Multiple
Interface Management” in this
Sub-Chapter.
Once an interface is selected,
the fields and default entries
which display in the
configuration window depend
on the device type specified.
The configuration parameters of
the interface, are as follows:
Configuration Parameters
•
Name: This field is a descriptive instrument name which is manually assigned by the user. This
must be a unique name. Typically, IEEE or COM is used.
•
IEEE Bus Address: This is the setting for the IEEE bus address of the board. It will be checked
against all the instruments on the bus for conflicts. It must be a valid address from
0 to 30 .
•
DMA: A direct memory access (DMA)
channel can be specified for use by the I/O
interface card. If DMA is to be used, select
a channel as per the hardware setting. If no
DMA is to be used, select NONE. The
NB488 does not support DMA, so the DMA
field will not display if this device type is
used. Valid settings are shown in the table.
•
Interrupt: A hardware interrupt level can
be specified to improve the efficiency of the
I/O adapter control and communication
using Driver488/DRV. For DMA operation
or any use of
OnEvent and Arm functions,
an interrupt level must be selected. Boards
may share the same interrupt level. If no
interrupt level is to be used, select NONE.
Valid interrupt levels depend on the type of
interface. Possible settings are shown in the table.
•
SysController: This field determines whether or not the IEEE 488 interface card is to be the
System Controller. The System Controller has ultimate control of the IEEE 488 bus, and the
ability of asserting the interface clear (
IFC ) and remote enable ( REN ) signals. Each IEEE 488 bus
can have only one System Controller. If the board is a peripheral, it may still take control of the
IEEE 488 bus if the Active Controller passes control to the board. The board may then control the
I/O Board Specified DMA Channel
GP488B 1, 2, 3 or none
AT488 1, 2, 3, 5, 6, 7 or none
MP488 1, 2, 3, 5, 6, 7 or none
MP488CT 1, 2, 3, 5, 6, 7 or none
NB488 Not applicable
CARD488 Not applicable
I/O Board Specified Interrupt Level
GP488B levels 2-7 or none
AT488 levels 3-7, 9-12, 14-15 or none
MP488 levels 3-7, 9-12, 14-15 or none
MP488CT levels 3-7, 9-12, 14-15 or none
NB488 level 7 for LPT1, level 5 for LPT2
CARD488 levels 3-7, 9-12, 14-15 or none