1.7.1. Specifications
1.8. Electrical Connections
RS485 Bus
The two wire RS485 bus connections are made using 20 cm CAT5 cables between the sensor
modules. The last module on the bus also has a blue termination dongle fitted.
Note: If the Analogue Output Module is fitted the termination dongle is not required.
12 VDC Power Bus
All modules inside the Dust Profiler operate from the 12VDC power. The power is supplied by a daisy
chain of black and red cables. A relay is activated by the Control Module on/off button to allow the
sensor bus to be powered.
12 VDC Power in
12
DC power is connected into the instrument at the terminal connector strip (“chock bloc”).
Features
Incorporates Telit HE910-DG
module
The Telit module handles all GSM/UMTS GPS
processing with PYTHON script
Frequency bands
GSM: 850/900/1800/1900MHz
UMTS/HSPA+: 800/850/900/1700/1900/2100MHz
Power supply
Single supply voltage 6V DC to 55V DC
connector 4 pin micro-fit 3mm
ADC and GPIO inputs
Two outputs optocouplers open collector drive 100ma
Two inputs optocouplers, 0-55v
One ADC 10 bit , 0-55V
connector 6 pin micro-fit 3mm
Communication
Modem Full RS232, connector D-Type 9pin (DB-9)
Modem USB, Connector USB Type B High retention
Antennas
GSM/UMTS GPS via SMA connectors
Mechanical Description
Weight
180g (6.35oz)
0.4 lb
Dimensions(max) L x W x H
83mm x 64mm x 34mm 3.26inch x 2.51inch x 1.33inch
Case material
Aluminium
Environmental Requirements
Operating temperature range
-20°C to +55°C
-4°F to 131°F
Ambient temperature
The module is fully functional in all the temperature range
and it fully meets the ETSI specifications.
-30°C to +70°C
-22°F to 158°F
The module is fully functional (*) in all the temperature
range. Temperatures outside of the range
–20°C to +55°C
(-4°F to 131°F) might slightly deviate from ETSI
specifications.
Humidity
5% - 85%
