La Crosse Technology WS-3502 Operation Manual - page 8
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Note:
In both cases, it is important to respect this order of succession
since the transmitter will send an identification code which has
to be received and stored by the Base Station within the first
few minutes of operation.
After doing this, full operation of the entire Weather Station System is
ensured.
3.2.3 Cable Connection:
One further feature of the direct cable connection mentioned in Item
3.1 above is that in case of AC/DC adapter operation, power is
provided not only to the Base Station but to the Relay Transmitter as
well by just this AC/DC adapter.
Note:
System operation with cable connection while at the same time
providing power to the Base Station solely by batteries is not
recommended because of the considerably higher power
consumption. The batteries may however remain in the unit for
emergency supply in case of a power failure.
A change from cable operation to 433 MHz radio transmission
or vice versa is possible in any case since the Weather Station
will recognize this change and will automatically switch to the
appropriate operating mode.
3.3 System
Start
After inserting the batteries respectively connecting the AC/DC adapter
the LCD of the Weather Station will for a few seconds display all LCD
segments for checking.
Immediately after this, the unit will enter the so called play mode
during which for about 15 minutes all measured and received weather
data are being switched through, updated and displayed. During this
time period there will be no reception of the DCF77 time information.
Note:
The play mode phase allows the user of the Weather Station to
check all cables for correct connection and all components for
correct operation. The latter will be possible by manually turning
the wind-gauge, moving the weather-vane, etc.