Telex Stratus 50 - Manual (Page 5)

Headset Power
The headset will operate with either 4 AA batteries or panel power from 8-32 Vdc.
Panel Power Option
An optional power cord is provided for use in negative ground electrical systems
only. Do not attempt to use with positive ground electrical systems. The power
cord is designed to connect the battery module to the aircraft power via the
cigarette lighter jack.
Page 3
Figure 3
Battery Installation
Figure 2
Panel Power Option
45 0 Locking
Power Cord
Battery Power
The battery module requires 4 AA batteries. Alkaline batteries are recommended
for best performance. Do not use nickel-cadmium/NiMH rechargeable or lithium
batteries.
1. Slide the battery door down in the direction of the arrow, then up to
rotate the battery door (Figure 3).
2. Place the batteries into the battery module as shown.
3. Slide the battery door back into place.
Cellular telephone / auxiliary audio input – see above for details
Headset Operation
1. Verify batteries are installed and headset powers on (see previous
section.) Connect panel power cord (if not using battery power.)