9/20/17, 8*58 AM
Shure Publications | User Guides | ULX-D Dual and Quad Z16-20
Page 78 of 96
http://pubs.shure.com/guide/ULXD-DQ/en-US
transmitter, or it could be from an interfering source, such
as a television broadcast. If more than one or two of the
amber RF LEDs are still illuminated while the transmitter is
off, then that channel has too much interference, and you
should try a different channel.
The red RF LED indicates RF overload. This will usually not
cause a problem unless you are using more than one
system at the same time, in which case, it can cause
interference in the other system.
Compatibility
Perform a Scan and Sync to ensure the transmitter
and receiver are set to the same group and channel.
Look at the label on the transmitter and receiver to
make sure they are in the same band (G50, J50, L50,
etc...).
Reducing Interference
Perform a group or channel scan to find the best
open frequency. Perform a sync to transfer the
setting to the transmitter.
For multiple systems, check that all systems are set to
channels in the same group (systems in different
bands do not need to be set to the same group).
Maintain a line of sight between transmitter and
receiver antennas.
Move receiver antennas away from metal objects or
other sources of RF interference (such as CD players,
computers, digital effects, network switches, network
cables and Personal Stereo Monitor (PSM) wireless
systems).
Eliminate RF overload (see below).
Increasing Range
If the transmitter is more than 6 to 60 m (20 to 200 ft)
