User`s guide

ENGLISH
14
• To Reduce Gain: Rotate the transmitter gain control counterclockwise with the sup-
plied screwdriver while you sing or speak in your normal voice. Continue rotating
the gain control until the red PEAK light on the receiver only flickers when you
sing or speak in a loud voice.
• To Return Audio Gain to the Factory Setting: Rotate the transmitter audio gain
control counterclockwise as far as it will go (T1G) or the mid position (T1, T2).
RECEIVER VOLUME ADJUSTMENT
The volume control on the front panel of the T3 and T4 receivers can be adjusted to
make the wireless system output identical to that of a cabled guitar or bass, or of a
conventional wired microphone. Adjust the receiver volume control until the
output reaches the desired level. Rotate the volume control clockwise to
increase
output. Rotate it counterclockwise to decrease output.
TIPS FOR ACHIEVING MAXIMUM PERFORMANCE
• Make sure you can always see a receiver antenna from the transmitter position.
• Keep the distance between the transmitter and the receiver antennas short.
• Extend the transmitter and receiver antennas vertically as far as possible. For
best performance, the T3 receiver antenna tip should be vertical; the T4 receiver
antennas should be pointed away from each other at a 45
° angle from vertical.
• Avoid placing the receiver antennas near metal surfaces and obstructions,
since they will seriously reduce system performance.
• To mount the receiver on a flat surface, attach the four adhesive rubber feet or
the cloth fastening strips to the bottom of the receiver.
RECEIVER SQUELCH ADJUSTMENT
The squelch control on the T3 and T4 receivers is factory preset for optimum
performance. No further adjustment is normally required. It is possible to adjust
the Squelch control setting to emphasize either signal quality or system range. Ad-
justing the Squelch control will produce the following results:
• Turning the squelch control clockwise causes the receiver to demand a higher
quality signal (less noise before muting), but
decreases operating range.
• Turning the squelch control counterclockwise allows a lower quality signal
through (more noise before muting), but increases operating range.
To return the receiver squelch control to the factory setting, rotate it to the mid-range
position (so the slot is vertical).
HOW THE SHURE NOISE SQUELCH IMPROVES SYSTEM
PERFORMANCE
Conventional squelch circuits work on the basis of received RF (radio frequency) signal
strength. However, such circuits cannot discriminate between noise and desired signals.
When the wireless system is used in an environment where lots of RF noise is present,
conventional squelch circuits can “open” unexpectedly, sending loud bursts of noise
through the receiver when the transmitter signal is weak or turned off.
Unlike conventional wireless systems, all Shure T-Series systems use a noise squelch
circuit that analyzes
signal quality instead of signal strength. A special detector monitors
the level of high frequency noise. When the transmitter signal is strong, the noise level is
low and the receiver sends audio through. When the transmitter signal is weak or absent,
the noise level is high and the squelch circuit mutes the receiver. This virtually eliminates
the possibility of annoying bursts of noise coming through your receiver.