2 datalogger peripheral, Datalogger peripheral – Campbell Scientific AL200 ALERT2 Encoder, Modulator, and Sensor Interface User Manual
Page 18
AL200 ALERT2 Encoder, Modulator, and Sensor Interface
•
Set the
SDI-12 Offset – (0) – This is a sensor specific value that along
with the SE1 Multiplier will be used to convert the analog output of a
sensor to an engineering unit. See Appendix H, Calculating
Multipliers and Offsets, for how to calculate multipliers and offsets.
(Note that most SDI-12 sensors do not require a multiplier or offset
except to convert units of measure.)
•
Set the
SDI-12 Tx Change – This is the threshold which a calculated
value for the SDI-12 measurement must exceed in order to trigger a
data transmission.
Sensor Data Monitoring
•
Set the
Configuration Sensor Scan Interval – This is the interval on
which sensors will be read only while you are connected to the AL200
with the Device Configuration Utility software.
After configuring the AL200 settings, click the
Apply button at the bottom of
the screen to send the changes to the device. It is a good idea to save the
configuration file for later reference.
7.1.2 Datalogger Peripheral
Main
•
Set the
Operation Mode to either ALERT2 on CS I/O, ALERT
Concentration on RS-232 or ALERT Concentration on CS I/O,
ALERT2 on RS-232 depending on what type of device the AL200
will be connected to.
ComPort
•
If the AL200 is connected to a Campbell Scientific datalogger, select
the appropriate SDC address. When using the CS I/O port, it is not
necessary to configure the RS-232 related settings.
•
If the AL200 is connected to an RS-232 device, configure the
RS-232
Baud Rate, RS-232 Parity, and RS-232 Stop Bits to match the
device.
ALERT2
These settings will be unique to a particular station and to your network.
•
Set the
Station Source Address – This is a station ID number that
must be unique within the network. This is an integer between 0 and
65,501. A database of source addresses can be found at
•
Set the
Frame Length – This is the total amount of time that all of the
stations in the network will report in. This is an integer with a
resolution of 500 ms between 500 and 43,200,000 (12 hours).
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