User Manual

9
Table 1. U519 Scanner LED Meanings
LED Color Status
Power ON Red ON = scanner is turned on
and receiving power from
external power supply
Activity/Error Yellow Flicker = scanner detects tag
information.
Constant Flickering with no tag
in the scanning field =
(a) Noisy environment or
possible interference,
resulting in diminished tag
reading.
(b) Loose cable or bad
connector
Transmit On Green On = Scanner is transmitting
RF signals.
connector allows the scanner to communicate with a personal computer
through the PC’s serial port. For more information on making this
connection, refer to page 13.
The upper right connector is the 25-pin test connector. For more
information on this connector, refer to Chapter 6.
U519 Manual.p65 10/27/2000, 4:35 PM9