User's Manual

Elster A3/Alpha Plus Node Hardware
EkaNet Hardware Manual 3 - 7 10156-07
Eka Proprietary and Confidential
3.3 Elster A3/Alpha Plus Node Specifications
Application Specifications
Compatibility Elster A3/Alpha Plus Meter Pulse Interface
Data storage Stores 1 month of data (1 channel @ 15 min. intervals)
Data Integrity Non-volatile data storage provides extra security in the
event of communication failure or power outage
Advanced features Load profile, remote demand reset
Radio Specifications
Operating frequency 902 - 928 MHz 2.400-2.4835 GHz
Reliable data
transmission
Error detection, correction
and retransmission
Error detection, correction
and retransmission
RF output power
20 dBm
1
1. 20 dBm is the typical output power. The radio hardware is capable of producing up to
30 dBm (1W) of RF output power.
20 dBm
Data rate 76.8 Kbps 1 Mbps
Receiver sensitivity -93 dBm (@ 0.1% BER,
+25°C)
Max transmit power 20
dBm
Sensitivity -80 dBm (@
0.1% BER, +85°C)
Range (w/ omni antenna) > 400 m (1200 ft.)
25 - 50 m (75 - 150 ft.)
Outdoor > 1,000 m (3,200 ft.) Frequency hopping
spread spectrum
Indoor 75 - 150 m (225 - 490 ft.)
Mode Frequency hopping
spread spectrum
Interface Specifications
ANSI C12.18/C12.19 for the A3
Meter manufacturer proprietary protocol for the Alpha Plus