Symbol MC9000-G Product Reference Manual page 405

Table 13-1. Troubleshooting the Mobile Computer (Continued)
Problem
The mobile computer cannot read
RFID tags.
The mobile computer cannot
program RFID tags.
Cause
Tag is damaged.
Tag is not programmed.
Tag type is not supported by
reader.
User is too far from tag.
Wrong tag orientation.
Reader is in a Multi-path
interference zone.
Tag is damaged.
Tag type is not supported by
reader.
Tag is locked.
User is to far from tag.
User is too close to tag.
Maintenance and Troubleshooting
Solution
Try another tag.
Program tag.
Try an appropriate tag type.
Move to within 10 feet or closer of tag (based on tag
type).
See Reading RFID Tags on page 2-39
antenna and tag orientation.
A Multi-path interference zone is a radio phenomena
caused by radio waves reflecting from other surfaces,
such as concrete floors or metal shelving, that causes
interference when the reader is at certain distances
from the tag. Moving the reader up or down, or
moving closer or further from the tag will eliminate
this interference. In general, reader motion will
enhance tag reading abilities.
Try another tag.
Try an appropriate tag type.
Try another tag.
Move the antenna to within two feet of tag (based on
tag type) but not closer than minimum write distance
of 1 foot.
The minimum write distance is 1 foot from the
antenna. Moving closer than 1 foot during programing
can damage tag and render it unreadable.
13-7
for correct