Troubleshooting - Shure ULXD User Manual

Firmware
Firmware is embedded software in each component that controls functionality. Periodically, new versions of firmware are developed to incorporate additional
features and enhancements. To take advantage of design improvements, new versions of the firmware can be uploaded and installed using the Firmware Update
Manager tool available in Shure's Wireless Workbench
Perform the following steps to update the firmware for the ULXD system:
1. Download the latest firmware to WWB software:
2. Connect the receiver and computer to the same network.
3. Download the latest firmware to the receiver.
4. To transfer firmware to the transmitter, go to
5. Align the transmitter and receiver IR ports.
6. Press on the receiver to begin the download to the transmitter. IR ports must be aligned for the entire download, which can take 50 seconds or longer.
ENTER
Once the download is complete, the receiver automatically begins the firmware update, which overwrites the existing firmware.
CAUTION! Do not turn off the receiver until the update is complete.

Troubleshooting

Issue
No Sound
Faint sound or distortion
Lack of range, unwanted noise bursts, or dropouts
Cannot turn transmitter off or change frequency settings, or can't program receiver
Encryption error message
Power
Make sure that the receiver and transmitter are receiving sufficient voltage.
Use the 15 V DC power supply furnished with the ULXD4 receiver. Check the
battery indicators and replace the transmitter batteries if necessary.
Gain
Adjust the system gain on the front of the receiver. Ensure the output level
(XLR output only) on the back of the receiver corresponds to the input of the
mixing console, amplifier, or DSP.
Cables
Check that all cables and connectors are working correctly.
Interface Locks
The transmitter and the receiver can be locked to prevent accidental or unau-
thorized changes. A locked feature or button will produce the
the LCD panel.
Encryption Mismatch
Re-sync the receiver and transmitter after enabling or disabling encryption.
Radio Frequency (RF)
RF LEDs
If neither blue Diversity LED is illuminated, then the receiver is not detect-
RF
ing the presence of a transmitter.
The amber Signal Strength LEDs indicate the amount of signal being
RF
received. This signal could be from the transmitter, or it could be from an
interfering source, such as a television broadcast. If more than one or two
of the amber LEDs are still illuminated while the transmitter is off, then that
RF
channel has too much interference, and you should try a different channel.
The red LED indicates RF overload. This will usually not cause a problem
RF
unless you are using more than one system at the same time, in which case, it
can cause interference in the other system.
14
(WWB) software. Software is available for download from http://www.shure.com/wwb.
®
>
Tools Firmware Update Manager
> on the receiver.
UTILITIES TX FW UPDATE
screen on
Locked
. Click to view and download the latest versions.
Check Now
See Solution...
Power, Cables, or RF
Gain
RF
Interface locks
Encryption Mismatch
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) from the receiver an-
tenna, you may be able to increase range by doing one of the following:
• Reduce interference (see above).
• Increase transmitter RF power level.
• Use an active directional antenna, antenna distribution system, or other
antenna accessory to increase RF range.
Eliminating RF Overload
If you see the red RF LED on a receiver, try the following:
• Reduce the transmitter RF power level
• Move the transmitter further away from the receiver—at least 6 m (20 ft)
• If you are using active antennas, reduce antenna or amplifier gain.
• Use omnidirectional antennas