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Transmitter Controls
(Refer to Figure E on page 5.)
POWER SWITCH: The Power switch controls the entire
transmitter. There is about a half-second delay after
transmitter turn-on before the receiver's Tone Lock
squelch un-mutes.
Remove the lower body cover to access the following
controls.
PAD SWITCH: The ESW-T214 offers a Pad switch with
0/–6/–12 dB positions which increases the maximum
SPL (sound pressure level) capability of the
microphone. Use the "0" (no pad) position unless very
high SPLs are encountered.
CHANNEL SWITCHES: The left channel selector switch
corresponds to the receiver's left-column channel
display number (tens); the right switch corresponds to
the receiver's right-column channel display number
(units). Always turn the transmitter off when changing
frequencies.
RF POWER / BATTERY-SAVE SWITCH: As supplied, the
switch is set in the "H" (high) position for maximum
range. Switching to the "L" (low) position increases
battery life somewhat by reducing power. (Note:
Effective range may decrease when the switch is set at
the "L" position.)
System Operation
Turn down the mixer/amplifier level before starting
up the wireless system.
Switch on the receiver. Do not switch on the
transmitter yet.
Receiver On...
The Channel Designator Display will light. If any of the
RF LEDs light up at this point, there may be RF
interference in the area. If this occurs, select another
frequency using the front-panel channel selectors.
While holding in the "Set" button, press the "Up" or
"Down" button to access the desired frequency; then
release the Set button to select the channel.
Transmitter On...
Before turning on the transmitter, use the provided
screwdriver to set the transmitter channel selector
switches (Fig. F) to the same numbers as those dis-
played on the receiver. Always turn the transmitter off
when changing frequencies. When the transmitter is
switched on and in normal operation, the receiver's RF
signal level indicators will light up from left to right. For
optimum performance at least four, and preferably five,
of the signal strength indicators should light up when
the transmitter is switched on. One of the Tuner LEDs
(A or B) also will light up when the transmitter is on,
indicating that its signal has been received and the
receiver's Tone Lock squelch circuit has opened.
Fig. F
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Setting Levels
Although Engineered Sound receivers require no level
adjustment, correct adjustment of transmitter audio
input and mixer/amplifier input and output levels is
important for optimum system performance.
The ESW-T214 handheld transmitter has a 0/–6/–12 dB
audio input Pad switch under the lower body cover. It is
factory pre-set at "0" for maximum audio input gain. If
four or five AF Level LEDs on the receiver illuminate
with maximum audio input, first try using the –6 dB
position. Extremely high audio input may require use
of the –12 dB setting. (Use the Pad switch only when
needed; excessive use will affect the maximum signal-
to-noise ratio of the system.)
1. Turn the transmitter on and power up the system.
2. Turn down the mixer's input trim control (if provided)
on the selected channel; make an initial adjustment of
the mixer channel and output level controls that will
allow audio through the system.
3. While 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 level controls to operate in
their "normal" range (not set too high or too low).
RF Interference
Please note that wireless frequencies are shared with
other radio services. According to Federal
Communications Commission regulations, "Wireless
microphone operations are unprotected from interfer-
ence from other licensed operations in the band. If any
interference is received by any Government or non-
Government operation, the wireless microphone must
cease operation..."
If you need assistance with operation or frequency
selection, please contact your dealer or the
Audio-Technica professional division. Extensive wireless
information also is available on the Audio-Technica Web
site at www.audio-technica.com.
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