Charging Times And Transmitter Runtimes; Important Tips For Care And Storage Of Shure Rechargeable Batteries - Shure GLX-D User Manual

Charging Times and Transmitter Runtimes

Use the following table to determine approximate battery runtime based on the duration of charging time. Times shown are in hours and minutes. GLX-D
transmitters automatically power-off after approximately 1 hour to conserve battery life if the signal from a linked receiver is not detected.
Receiver Bay or AC Power
Source Charging
0:15
0:30
1:00
3:00
*Storage time or excessive heat will reduce maximum runtime.
Note: If receiver is powered off and remains plugged in, battery will continue charging.

Important Tips for Care and Storage of Shure Rechargeable Batteries

Proper care and storage of Shure batteries results in reliable performance and ensures a long lifetime.
• Always store batteries and transmitters at room temperature
• Ideally, batteries should be charged to approximately 40% of capacity for long-term storage
• During storage, check batteries every 6 months and recharge to 40% of capacity as needed
2.4 GHz Spectrum Overview
GLX-D operates within the 2.4GHz ISM band which is utilized by Wi-Fi, Bluetooth, and other wireless devices. The benefit of 2.4GHz is that it's a global
band that can be used anywhere in the world, license free.
Overcoming the Challenges of 2.4 GHz
The challenge of 2.4 GHz is that Wi-Fi traffic can be unpredictable. GLX-D
meets these challenges in the following ways:
• Prioritizes and transmits on the best three frequencies per channel
(choosing from a pool of six frequencies across the 2.4 GHz band)
• Seamlessly moves away from interference to backup frequencies with-
out audio interruption
• Optional GLX-D Frequency Manager improves RF reliability for systems
with more than two receivers
• Continuously scans during usage to rank all frequencies (both current
and backup frequencies)
• Antenna mounting accessories and directional antennas (available
separately) help reduce transmitter-to-antenna distance and connect to
antenna splitter
Coexisting with Wi-Fi
If you plan to use Wi-Fi during a performance, turn on Wi-Fi devices prior
to turning on GLX-D and scanning for the best channel. GLX-D detects
and avoids other Wi-Fi traffic by scanning the entire 2.4 GHz environment
and selecting the three best frequencies to transmit on. This method
avoids Wi-Fi signals and results in reliable performance for your GLX-D
wireless system.
"Bursting" Wi-Fi is harder to detect as it is periodic; however, because
GLX-D only repeats the most important information, even bursts at very
high levels don't have an effect on your audio performance.
USB Connection Transmitter
Charging Runtime
0:30 up to 1:30
1:00 up to 3:00
2:00 up to 6:00
4:00 up to 16:00*
Challenging Wireless Environments
Some environments are more difficult than others for 2.4 GHz wireless
system performance. Additionally, body absorption has a greater impact in
the 2.4 GHz spectrum compared to the UHF spectrum. The simplest solu-
tion in many cases is to reduce transmitter-to-receiver distance by placing
receivers on the stage with a clear line of sight. You can also mount anten-
nas remotely using Shure directional antennas to reduce transmitter-to-an-
tenna distance.
Challenging environments include:
• Areas with few reflective surfaces such as:
- Outdoors
- Buildings with very high ceilings
• Three or more GLXD4R receivers in use and not connected to a GLX-D
Frequency Manager
• Areas with a strong Wi-Fi presence
• 2.4 GHz systems from other manufacturers in use
Note: Unlike analog TV band wireless system which typically use the
same type of transmissions across manufacturers, all 2.4 GHz wireless
currently on the market use different variations of wireless transmission.
These differences make it more difficult to mix and match 2.4 GHz sys-
tems from multiple manufacturers, as can be done with TV band wireless
solutions.
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