Bosch Security Systems, Inc.
Technical Manual
F.01U.196.221
Rev. 08
CHAPTER 1
Introduction
Important Safety Instructions
1.
Read these instructions.
2.
Keep these instructions.
3.
Heed all warnings.
4.
Follow all instructions.
5.
Be sure, while wearing the headset, you are still able to hear all warning tones and signals. If you cannot hear the
warning tones or signals, you may need to adjust your headset.
6.
This headset is capable of producing sound pressure levels above 100dB SPL.
7.
Refer all servicing to qualified service personnel. Servicing is required when the headset has been damaged in any
way, such as headset cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the
apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.
8.
The battery used with these headsets is a Lithium based unit. This unit must only be charged with the Telex specified
battery charger. Care should be used when transporting the battery; when not installed in a headset, battery terminals
must not contact any continuous conductive surface, as this may result in a short circuit situation.
9.
Our headsets are designed to be used with one (1) audio input module at a time.
General Description
Congratulations! You have made you first step toward a new level of excellence in headset technology. Introducing the
Ascend, the newest design in headset technology by Telex. The Ascend was designed with you, the user, in mind with its
modular design, installation options, and its multi-functionality beyond the aircraft. The modular design allows you to
interchange different modules to allow the best headset for every environment. The Ascend also can install into an aircraft
using either a dual plug cord, or an XLR connector – you decide. Finally, this headset is not just for the aircraft anymore, by
installing alternate interface modules, you can connect to a GPS, an MP3 player, or many other audio device.
