Vaisala RS92-KL - Manual (Page 32)

User's Guide ______________________________________________________________________
30 __________________________________________________________________ M210299EN-D
8. Check from the DigiCORA® sounding software that the telemetry
link is working well. For detailed instructions on using the
sounding software, refer to the DigiCORA® User’s Guide.
The radiosonde is now prepared for launch. In order to ensure 120
minutes of flight time, the radiosonde has to be launched within 15
minutes of battery connection.
Proceed now to launch the radiosonde.
Launching the Radiosonde
The radiosonde is now ready for launch.
Attaching the Unwinder
The unwinder is used to unwind the suspension string gently and
slowly. To do this, the unwinder must be attached firmly so that it does
not rotate relative to the balloon. If the unwinder moves freely, the
suspension string unwinds too quickly, and it is possible that the
radiosonde hits the ground upon launch.
The unwinder is designed to be tied directly to the balloon.
If you cannot attach the unwinder directly to the balloon, for example
when using a radar reflector or a parachute, sounding accessories are
needed to restrict the movement of the unwinder. For instructions, refer
to section
Optional Sounding Accessories on page 18 .
Attaching the Unwinder to the Balloon
Follow these steps to attach the unwinder directly to the balloon:
1. Pass the unwinder hook through the loop created by the tied
balloon neck.