User`s guide

Chapter 3 _________________________________________________________________ Operation
VAISALA________________________________________________________________________ 17
NOTE
One end of the battery is waxed to prevent leakage. Therefore, the
battery should be inserted with the waxed end down.
NOTE
You now have 15 minutes for handling the radiosonde before launch.
The radiosonde is now prepared for launch. Attach the radiosonde
unwinder to the balloon as explained in section Prepare the Balloon on
page 9.
Launch the Radiosonde
When launching the radiosonde, proceed as follows:
1. To launch the RS92 Digital Radiosonde, hold the unwinder so
that the string cannot begin to run out before release.
NOTE
When releasing the radiosonde, keep the string length between the
radiosonde and the unwinder as short as possible.
2. Immediately after the launch, check the reception of the
radiosonde frequency on the receiver. Correct the tuning if
necessary.
3. The radiosonde should be launched within 15 minutes from the
battery activation. A setup with a radar reflector between the
balloon and the unwinder should be prepared as far as possible
before activating the battery.
4. The preparation and setup procedures for special sensor
soundings with RS92 Digital Radiosonde can be found in the
appropriate manuals.
Ground Equipment
At this stage the ground equipment will ask you for surface
observation information. Please refer to your sounding equipment
manuals for further details on monitoring the sounding and
receiving/viewing sounding data.