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8
CHAPTER 2
Using the addSDI
More about the LED tool
Note: The solar panel can be mounted under or behind the
addSDI RTU, but be sure that the RTU does not shadow the
panel.
6.
Fasten the addSDI RTU to the top of the mast using another
pipe clamp. Adcon recommends that you perform another
connectivity test, if you can, to check the positioning of the
device.
WARNING
If you turn the fastening screws too tight, you might
damage the plugs.
7.
Attach the SDI-12 sensor to the SDI jack and the solar panel to
the POWER jack by turning the connectors fastening screws
clockwise until secured tightly.
8.
Secure access cable of the SDI-12 cable to the pole with cable
ties. To protect it from damage don't let it sit on the ground!
This completes the installation of your addSDI RTU. If the SDI-12
jack is left unused, use the attached cap, meant to protect it
against moisture and dust. Be sure to make a note of the following
information because you'll need it when you configure the device
in the software:
•
Serial number of each RTU
•
Type and address of SDI-12 sensors connected to each RTU
WARNING
The SDI-12 sensor addresses must be set prior to
attaching the sensors to the SDI-12 bus. Be sure to use unique
addresses only! There is no way to resolve address conflicts once
the sensors are attached to the SDI-12 bus.
The LED tool allows you to rapidly check the status of an addSDI
RTU. After you insert the LED tool into the POWER connector, the
unit waits for up to two seconds and then sends a broadcast frame.
If a nearby station or receiver decodes the frame, it will answer—
this may take up to 10 seconds. When an answer is received, the
LED tool lights up for about 4 seconds. A few seconds later, the
LED will light up again one or several times - once per station/
receiver that answered to its broadcast frame.
After that the LED continuously blinks briefly in 0.5 second inter-
vals to indicate that the unit is alive and that the internal battery
has enough energy to operate. If the blinking interval lengthens to
2 seconds, the battery has become undercharged (that is, under
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