Omega OMB-PER-488/W95, Руководство пользователя

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Personal488 User's Manual For Windows 95 and Windows NT Troubleshooting 119
Troubleshooting 10
Radio Interference Problems……119
IEEE 488 Bus Errors……119
Hardware-Software Conflicts……120
Checking Hardware & Software Settings……120
Radio Interference Problems
Personal488 hardware systems generate, use and can radiate radio frequency energy, and if not
installed and not used correctly, may cause harmful interference to radio communications. However,
there is no guarantee that interference will not occur in a particular installation. If this equipment does
cause harmful interference to radio or television reception, which can be determined by turning the
equipment off and on, you the user are encouraged to try to correct the interference by one or more of
the following measures:
•
Antenna Adjustment:
Reorient or relocate the receiving antenna.
•
Spatial Separation:
Increase the separation between the equipment and receiver.
•
Circuit Separation:
Connect the equipment to an outlet on a circuit different from that to which
the receiver is connected.
Otherwise, consult the dealer of an experienced radio/television technician for help.
IEEE 488 Bus Errors
•
Connections:
Check to make sure that all of the that IEEE 488 bus cables are securely fastened to
their respective terminals, and that the IEEE 488 Standard has been met.
•
Primary Addresses:
Check to make sure that all of the IEEE 488 bus primary addresses each has a
unique value between
0
and
30
. No two interface boards or external devices should have the same
primary address within any single IEEE 488 bus system. The default IEEE 488 bus primary
address is
21
, but this may be changed if it conflicts with some other device.
•
Timeouts:
Check to make sure that the time out period is preferred over setting IEEE 488 bus
terminators. If the time out period elapses while waiting to transfer data or while waiting for
unspecified terminators, a time out error occurs.
•
Bus Terminators:
Check to make sure that the IEEE 488 bus terminators sent by the device and
the IEEE 488 bus terminators expected by the software driver, match up. Typically, these
terminators are carriage return (
CR
) and line feed (
LF
), followed by an End-Or-Identify (
EOI
).
For more information on the configuration of Driver488 software settings for IEEE 488 interfaces and
external devices, see chapter
Driver488/W95 & Driver488/WNT
on page 41.
Note:
If you make any changes to the configuration parameters – such as the Primary Address,
Timeout, and Bus Terminator – you must restart the device driver for the changes to take
effect. For Driver488/W95, close all applications using the interface board and restart your
programs. For Driver488/WNT, you can use the following commands to restart your device
driver:
net stop drvr488
and
net start drvr488
.