SCR Engineers Ltd. T04 Manuale Utente
P a g e
4
1. Global system specifications
All units are for outdoor use, required Radio regulations according to target market &
Low voltage 24VDC regulation (except for tags which powered by internal battery).
Low voltage 24VDC regulation (except for tags which powered by internal battery).
1.1
System components
eSense Ear TAG
– Activity based tag with 2.4GhZ transceiver.
BU-500
– LD Base unit, with RS-485 network interface and 2.4GhZ transceiver.
BU-500E
– LD Base unit, with 10BASE-T/100BASE-TX Ethernet network
interface and 2.4GhZ transceiver.
1.2
TAG - BU communication overview
Tag
Tag initiate sending data
BU500
Tag
BU initiate sending messages
BU500
2
0
m
in
u
te
s
RF
Legend:
*When no ACK from tag
No retries when tag sends data