Logitech Wireless BH870 - Manual (Page 25)

BH870 Wireless Bluetooth® Headset User’s Guide 25
Headset State Led When Battery Level Is Good Led When Battery Level Is Low
Fully charged in cradle
Constant green
N/A
Table 5: Headset visual signals and their meanings
7.6 Battery Indicators and Recharge
Battery indicators
The headset indicates the current headset battery level, as follows:
- The headset LED indicates, among other things, its battery and charging status; see the table above for details.
- While the battery is low, you will hear an audio signal (two quick, low tones) every minute or so in the headset.
Recharging the Headset
To recharge your headset battery, place the headset into its Travel Charger and connect the charger to power.
See also 4.1 Charging the Headset.
7.7 Power Save Mode
You can choose to put the headset into power save mode. The means that the headset saves power at the expense of a slightly reduced
range.
You can enable/disable power save mode from the base touchscreen (Advanced Settings menu) and the Jabra Control Center. Power
save mode is disabled by default.
In some circumstances, you can use power save mode to improve sound quality if the sound becomes distorted. This can happen, for
example, with an active call and a call on audio-hold. To do this, enable power save mode, and then close and re-open the audio link.
You can also enable power save mode if you want to use a larger number of headsets within a given area.
See 7.11 High-capacity BH870 Headset Installations for more on density and 7.8. Staying within Range for more information about range.
Power save mode uses the Bluetooth Enhanced Data Rate (EDR) feature.
7.8 Staying within Range
The BH870 Headset supports the following maximum ranges:
- Up to 100m when talking through the USB Bluetooth Adapter
- Up to 25m when talking over Bluetooth wireless technology Class 2 (most) mobile phones
In practice, you will probably find the range to be somewhat shorter due to physical obstructions and electromagnetic interference.
Also, if your headset is in power save mode, the range is slightly reduced.
The sound in your headset will slowly deteriorate as you move farther from its Bluetooth partner; move back into range to restore sound
quality. All sound will stop if you move all the way out of range.
If you are talking through the USB Bluetooth Adapter, your call will be kept open for up to 120 seconds after you go out of range and
then disconnected. If you are talking trough a mobile phone, your call will probably be disconnected the moment you walk out of range.
After moving out of range, the headset will try to reconnect to the lost device periodically. The headset will try to reconnect every 15
seconds, up to five times, and then every 15 minutes for 5 hours. After that, it gives up to save power.
Usually, when you turn off a connected Bluetooth device while the headset is turned on, the headset will react in the same way, as if you
had simply walked out of range, as described above.
Tip: For optimal performance with a Bluetooth Class 2 mobile phone, wear the headset and your mobile phone on the same
side of your body or within line of sight of each other. In general you will get better performance when there are no ob-
structions between the headset and your mobile phone.
7.9 Microphone Noise Blackout™
The BH870 Headset features an advanced, two-microphone Noise Blackout™ system that will help ensure that your voice will be clear
and easy to understand — even when you are sitting in a crowded office or other noisy environments. It works by using a pair of
directional microphones: one facing towards your mouth and one facing away. These two signals are combined inside the headset,
which subtracts the room-noise signal from the voice signal, leaving only your voice behind when it is sent to your phone. This system
works best when the headset’s microphone is placed as close as possible to your mouth.