16-16 Troubleshooting
Writer: Karen Williams Saved by: Cheryl Love Saved date: 09/05/97 2:45 PM
Part Number: 220709-003 File name: Ch16.doc
Solving Infrared Problems
Continued
Problem Possible Cause Solution(s)
Cannot link with
another infrared-
equipped device
(continued).
Devices are placed
at too wide an angle.
Lessen the angle between
the devices. (The
maximum capture angle for
IrDA interface is 30
degrees; some target
devices may require more
direct alignment. Do not
point one port more than
15 degrees off the center
line away from the
other port.)
Cannot link with
another computer.
Interrupt request
(IRQ) conflict.
Check IRQ assignments for
conflicts, then reassign if
necessary.
Baud rate conflict. Select the same baud rate
for both computers.
# bits conflict. Select the same # bits
setting for both computers.
Stop byte conflict. Select the same stop byte
for both computers.
Parity conflict. Select the same parity
setting for both computers.
Data transmission
problem.
Direct sunlight,
energy-saving
fluorescent light, or
flashing
incandescent light is
close to the infrared
connections.
Remove the interfering
light source(s).
Move the infrared ports
closer together.
Select a slower fixed baud
rate for both devices.
Interference from
other infrared-
equipped devices.
Keep infrared-equipped
remote control units, such
as wireless headphones,
pointed away from the
infrared connection.
Dirty infrared lens. Clean the lens with a lint-
free cloth.
Distance. Verify that the devices are
not more than 1.5 feet
(.5 meter) apart.
Continued
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