Setting Gain; Transmitter Input Clip; Interference Detection - Shure ULX-D Manual

Setting Gain

Adjust gain at the receiver so that the average signal levels are solid green and yellow with peaks that flicker the red overload LED. Attenuate the gain if the
signal overloads repeatedly.
Set the XLR output to line-level when possible to optimize sound system noise performance.
System Gain Control
The gain control on the receiver sets the audio signal level for the entire system. This allows adjustments to be made during a live performance. It is not nec-
essary to change the gain on the transmitter (mic offset) to optimize the gain structure. Any required changes to gain should be made from the receiver.
Adjusting Gain
ULXD4
Digital Wireless Receiver
sync
Press the ▲▼ buttons on the front of the receiv-
gain
er to incrementally adjust gain from -18 to +42 dB.
Reading the Audio Meter
Audio peaks illuminate the LEDs for 2 seconds while RMS signal
is displayed in realtime.
audio gain power
RF
(Overload) LED: Illuminates red when the internal limiter is
OL
A B
engaged, preventing digital clipping.
OL
OL

Transmitter Input Clip

The following warning displays on the receiver LCD panel when the trans-
mitter input is clipped:
To correct, attenuate the signal source. If the source
cannot be attenuated while using a bodypack transmit-
Tx OVERLOAD
ter, select
the input signal 12 dB.
RF
RF Power
Reference the following table for setting RF Power:
System
RF Power Setting
Range
1 mW 33 m (100 ft.)
10 mW 100 m (330 ft.)
20 mW 100 m (330 ft.)
Note: Using the 20 mW setting decreases the transmitter battery runtime
and reduces the number of compatible systems.
audio gain
RF
AB
control audio gain power OL
RF
A B
L
OL
ENTER OL
EXIT
SCAN
push
from the main menu to attenuate
INPUT PAD
Application
For increased channel reuse
at close distances
Typical setups
For hostile RF environments
or long-distance applications
power
audio
RF
A B
OL
Press and hold a
gain button
Mute
To mute the audio, use Shure Wireless Workbench
party control device.
Mic. Offset
Use this to compensate for signal level differences between transmitters
that share the same receiver.
Set the offset gain on a low signal level transmitter to match a louder trans-
mitter: >
Utility Mic.Offset
Note: For normal gain adjustments, use the receiver gain buttons.

Interference Detection

Interference Detection analyzes the quality of the RF signal and detects in-
terference conditions that have caused an audio signal dropout. When inter-
ference is identified, the RF LEDS illuminate red and the following warning
displays on the receiver LCD panel.
Large Gain Adjustments
gain power
or
OL ULXD4
Digital Wireless Receiver
sync
Use the control wheel in
the
AUDIO
Perform a Scan and Sync during a perfor-
mance break if the warning display persists
or the audio drops out repeatedly.
control
ENTER OL
EXIT
SCAN
push
menu
software or a third-
®
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