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8
2000 Series Installation and Operation
Setting Levels (Continued)
ATW-T210a UniPak
Transmitter
®
Trimmer adjustments in the UniPak
to use microphones or instruments with different output levels.
1. For MIC: Set microphone level trim control fully clockwise
(maximum) and instrument level trim control fully counterclockwise
(minimum). Factory setting is fully clockwise (maximum).
For INSTRUMENT: Set instrument level trim control fully clockwise
(maximum) and microphone level trim control fully counterclockwise
(minimum). Factory setting is fully clockwise (maximum).
2. Set the receiver's AF Level control to its full clockwise position
(maximum). See
Figure D
3. Plug the mic or instrument into the transmitter and power up the
system.
4. For MIC: Make an initial adjustment of the mixer's level controls that
will allow audio through the system.
For INSTRUMENT: Make an initial adjustment of the instrument
amplifier input level control that will allow audio through the system.
5. For MIC: While speaking/singing into the microphone at typically
loud levels, check the AF meter levels on the receiver. If all five
meter bars are consistently illuminated and distortion is heard
through the system, it may be necessary to adjust the UniPak
transmitter audio input level. To adjust the transmitter audio input
level, gently turn the microphone level trim control counterclockwise
until the topmost receiver AF level meter bar is illuminated only on
audio peaks.
For INSTRUMENT: While playing the instrument at typically loud
levels, check the AF meter levels on the receiver. If all five meter
bars are consistently illuminated and distortion is heard through
the system, it may be necessary to adjust the UniPak transmitter
audio input level. To adjust the transmitter audio input level, gently
turn the instrument level trim control counterclockwise until the
topmost receiver AF level meter bar is illuminated only on audio
peaks.
6. For MIC: While again speaking/singing into the microphone at
typically loud levels, adjust the mixer's input trim control so the
highest sound pressure level going into the microphone causes no
input overload in the mixer, and yet permits the mixer's channel and
output level controls to operate in their "normal" range (not set too
high or too low).
For INSTRUMENT: While again playing the instrument at typically
loud levels, adjust the receiver's AF Level control so the highest
signal level causes no input overload in the instrument amplifier
and yet permits the amplifier's input level controls to operate in their
"normal" range (not set too high or too low).
Note: If the mixer cannot be adjusted to operate in its normal
range without distortion, adjust the receiver's AF Level Control (turn
counterclockwise) until the mixer/ amplifier is no longer overloaded.
transmitter
(Fig. E
) will enable you
®
on page 5.
Fig. E
– UniPak
Transmitter Open
®
Service Port
(for factory use only)
RF Power
Select Switch
Channel
Selector
Switch
Battery-keeper
Arm with
Screwdriver
attached
Receiver Squelch
The squelch control on the back panel of the receiver is preset
at the factory for best system performance (factory setting is full
counterclockwise), but can be adjusted if you must use the system in
an area with considerable RF interference. If there is interference in
the audio, and changing the channel is not an option, adjust the squelch
control so the system will receive the signal from your transmitter but
will "squelch" or eliminate the unwanted background RF noise. This
adjustment can cause a reduction in useable range of the wireless
transmitter, so set the control to the lowest position that reliably mutes
the unwanted RF signals.
Antenna
Power-on LED
Audio Input Jack
Instrument/
Microphone Level Trim
Controls
Transmitter
Door
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