Hardware Manual
Arctic AMR Hardware Manual
Firmware Version 1.x
10
Document Version 1.1
Note!
External fuses are required for each phase line to protect the device. The fuse
with a rating not greater than 2A is recommended. All the connections to the
power connector (phase and neutral) must be connected via all-pole safety
switch.
2.2
Antenna connector
The device has an SMA (female) connector. The antenna has an SMA male
connector.
2.3
System status LEDs
The device has 5 system status LEDs. When the system is fully operational,
all LEDS should be on.
Table 2: LEDs Status
No. Legend
LED name
Description (LED ON)
1
POW
POWER
Device has AC power and it's operational
2
RUN
RUN
Device SW is running OK
3
SIG
SIGNAL
GPRS signal level is OK
4
NET
NETWORK
GPRS is registered successfully to network
5
MET
METER
Meter connected to device successfully and serial
port is polling
2.4
Serial port
The serial port connector is a 9-pin D-sub (female) connector supporting serial
speeds from 300 to 115200 bps.
Serial port signals and pin connections are listed in table 3:
Table 3: Serial Port Pin Connection
Number
Name
Explanation
1
DCD
Data Carrier Detect
2
RXD
Received Data
3
TXD
Transmitted Data
4
DTR
Data Terminal Ready. Handshake output
5
GND
Signal ground
6
DSR
DSR
7
RTS
Ready To Send. Handshake output
8
CTS
Clear To Send. Handshake input
9
RI
Ring Indicator
