XLINK 500/100 Operations & Maintenance Manual page # 86
Switched Power which provides whatever voltage is powering the station, presumably 12V,
on terminal #8.
Normally, these outputs are off. Prior to making an analog measurement, the system will turn on
these outputs. After that, the system waits
Warmup
amount of time (which is expressed in
seconds) before measuring the output of the sensors. This
Warmup
time gives the sensors a
chance to power up and prepare their outputs.
If
Warmup
is set to zero, the system will not wait at all prior to measuring. The value
Warmup
should be set to depends on the analog sensor being measured.
Warmup is also used for
Digital and SDI-12
type sensors. If a such a sensor (or
a wind sensor that uses digital or SDI-12 inputs) is set up with a warmup, then
VREF and Switched Power (SWD#1) will both be turned on. If warmup is set to
zero, those output lines will not be turned on. This is different for
Analog
measurements which turn on the lines regardless whether warmup is zero.
9.3.5.
Measure Type: Battery
This type measures the voltage of the battery connection to the station. This measurement is a
useful diagnostic for tracking the performance of the battery and any solar panel or other
charging equipment.
9.3.6.
Measure Type: Wind
The Wind measure type makes it possible to do vector averages of data from wind speed and
direction sensors. The normal average function does not typically work for wind sensors because
of the circular nature of the direction measurement. The vector averages take into account the 0
to 360 degree crossover to produce accurate average.
Follow these steps to setup for Wind averages:
Step 1) Setup a measurement to measure the wind speed (see
Set measurement interval for how often you want the speed measured
Use slope/offset/equation to properly scale the speed to the desired units.
Disable logging for the data (log interval = 24:00:00)
Disable transmission of the data (TX Data Content = Exclude)
Step 2) Setup a measurement to measure the wind direction (see Connecting Prop/Vane
or Anemometer/Vane Wind Sensors)
Set measurement interval for how often you want the direction measured
Use slope/offset/equation to properly scale the direction to degrees.
Disable logging for the data (log interval = 24:00:00)
Disable transmission of the data (TX Data Content = Exclude)
Step 3) Setup measurement(s) to do the wind calculations with the desired results
Select Wind measure type
Configure the speed and direction index to the measurements setup in steps 1 and
2
Pick the desired result type.
Set the schedule interval and averaging time for the duration of the averaging.
Set the sampling interval equal to the measurement interval of the speed and
direction sensors.
