6USER MANUAL ELDES ET082 V1.0
6
2.2 Main Unit, Connector, Pin & LED Functionality
2.2.1 Main Unit Functionality
GSM MODEM
GSM network 850/900/1800/1900 MHz modem
SIM CARD
SIM card slot / holder
ANT
GSM antenna SMA type connector
F1
Fuse model – miniSMDC 500mA
USB
Mini USB port
2.2.2 Connector Functionality
Labelling
Description
L1 - L4
Landline or PBX contacts (according to backup mode)
RING
RING contact
TIP
TIP contact
C1 - C3
Outputs
DC+
Positive power supply contact
COM
Negative power supply contact / Common contact
Z1 - Z3
Inputs
2.2.3 Pin Functionality
Labelling
Description
DEF
For restoring factory default settings
SET
For communication method of
Basic
mode set up
MODE
For communication method of
Basic
mode set up
JP8, JP9
For direct data transmission via PSTN with status monitoring
UART
For retreiving debug log
2.2.4 LED Functionality
Labelling
Description
INFO
Operation activity status
STATUS
Device status
GSM
GSM network strength
GSM Signal Strength Indication
GSM signal strength is indicated by
GSM
LED. To ensure the best quality of the network adjust the position of GSM antenna and
find the strongest possible signal by observing the
GSM
LED indications.
GSM LED Indication
GSM Signal Strength
Off
No connection
Flashing every 3 seconds
The connection is not reliable
Flashing every 1 second
Satisfactory
Flashing several times per second
Good
On
Excellent
