Campbell Scientific AL200 ALERT2 Encoder, Modulator, and Sensor Interface User Manual
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AL200 ALERT2 Encoder, Modulator, and Sensor Interface
packet. This makes it possible to trace the path that a packet took
from its beginning to its destination.
Radio Settings
The default radio settings have been chosen to work well with Campbell
Scientific’s RF320 series (Ritron DTX-L series) radios. If using a different
type of radio, consult the manufacturer and apply the changes to the following
settings.
•
Set the
Radio Power Up Mode – (On Only With Data to TX) – This
determines when the radio will be powered on.
•
Set the
Radio Warm Up – (750) – This is the amount of time, in
milliseconds, that power will be applied to the external radio prior to
data transmission.
•
Set the
Carrier Only Time – (10) – This is the amount of time, in
milliseconds, that radio will be fed an unmodulated carrier.
•
Set the
AGC Time – (25) – This is the amount of time, in
milliseconds, that the radio will be fed a tone-modulated carrier.
•
Set the
Tail Time – (5) – This is the amount of time, in milliseconds,
an unmodulated carrier will be transmitted following data
transmission.
•
Set the
Modulation Voltage – (390) – This is the peak-to-peak
voltage level of the modulated signal that will be fed to the radio.
Value is expressed in millivolts.
•
Set the
Modulation Polarity – (Normal) – This is the polarity of the
modulated signal fed to the radio.
GPS Settings
•
Last GPS Fix – This is the data and time of the last successful GPS
fix obtained by the AL200.
•
Set the
GPS Power On Interval – (30) – This is how often the GPS
receiver will be powered on and an attempt to get a GPS fix will be
made. Value is expressed in minutes.
•
Set the
GPS On Max – (5) – This is the maximum amount of time, in
minutes, that the GPS receiver will be powered on without a GPS fix
being obtained.
Sensor Input Settings
•
Set the
Self Report Interval – (43,200,000 (12 hours)) – This is how
often the AL200 will transmit non-event triggered data. Value is
expressed in seconds.
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