
11
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®(WWB) software. Software is available for download from http://www.shure.com/wwb.
Perform the following steps to update the firmware for the ULXD system:
Troubleshooting
Issue See Solution...
No Sound Power, Cables, or RF
Faint sound or distortion Gain
Lack of range, unwanted noise bursts, or dropouts RF
Cannot turn transmitter off or change frequency settings, or can't program receiver Interface locks
Encryption error message Encryption Mismatch
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
unauthorized changes. A locked feature or button will produce the Locked
screen on the LCD panel.
Encryption Mismatch
Re-sync the receiver and transmitter after enabling or disabling encryption.
Radio Frequency (RF)
RF LEDs
If neither blue RF Diversity LED is illuminated, then the receiver is not de-
tecting the presence of a transmitter.
The amber RF Signal Strength LEDs indicate the amount of signal being
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 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 prob-
lem 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) 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
1. From Shure Wireless Workbench software, open the Firmware Update
Manager: Tools > Firmware Update Manager.
2. Click Check Now to view new versions available for download.
3. Select the updates and click download.
4. Connect the receiver and computer to the same network.
5. Download the latest firmware to the receiver.
6. To upload the firmware to the transmitter, go to UTILITIES > TX FW UPDATE
on the receiver.
7. Place the transmitter on its side and align the IR ports.
8. Press ENTER 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.
Once the download is complete, the receiver automatically begins the firm-
ware update, which overwrites the existing firmware.
CAUTION! Do not turn off the receiver until the update is complete.