R
EADER
H
ARDWARE
I
NSTALLATION AND
O
PERATION
C
HAPTER
2
ALR-9890 – RR Hardware Setup Guide
D
OC
. C
ONTROL
#8102
XXX
-000 R
EV
A
8
Diagnostic LEDs
The ALR-9890 - RR includes diagnostic LEDs on the face of the reader to
provide easy and convenient external indication for various operating conditions:
POWER (green)
- indicates power is applied to the reader
LINK (green)
– indicates that the reader is connected to the network
ACTIVE (green)
– indicates reader is transmitting on the network
ANT 0 – ANT 3 (green)
– indicates that the reader is transmitting power
on the specified antenna port
CPU (green)
– indicates that the CPU has booted successfully and is
running normally.
READ (green)
– indicates that the reader is receiving data from a tag
SNIFF (green)
– indicates a tag signal has been detected, though it may
not be strong enough yet to complete a transaction.
FAULT (red)
– indicates a fault condition with the reader.
Figure 4 – ALR-9890 – RR Reader Diagnostic LEDs
