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EO3 Transmitter
The EO3 transmitter is a compact
transmitter that broadcasts on one of eight
channels in the 72-76 MHz band, to any
number of EO3 wireless bodypack receivers
on the same channel. The system provides
a 300 ft. wireless operating range, and
offers these features:
Eight factory switchable channels•
Rear panel input for line level audio •
Front panel input for microphone•
Audio input gain control•
Automatic level control•
Extendible antenna•
9 volt DC input for AC-EO3 9VDC •
regulated power supply adapter provided
Power switch with red LED power •
on indicator
Audio modulation LED indicator•
Setting Up the Transmitter
Your EO3 requires minimum installation.
Simply place the transmitter on any
flat surface, connect your mixing board
to the transmitter’s back panel input
(See Connecting Audio Input below),
connect the included power supply
(as explained below), and the transmitter is
ready to broadcast to any number of EO3
receivers operating on the same channel.
Powering the Transmitter
Connect the AC adapter provided into
the 9V DC jack (1) on the back panel of the
transmitter. Plug the other end into an
AC wall socket. Press Power switch (2).
The Power On LED (3) will light.
Antenna
Extend Antenna (4) fully and position
90 degrees from top of the transmitter.
Connecting Audio Input
The Line In jack (5) on the rear panel lets you
connect the EO3 to your mixing console. This
1
/
4
” mono phone jack accepts an unbalanced
line level audio source at zero dBm nominal
signal level. If your mixer has XLR outputs
only, you will need an XLR-to-phone plug
adapter, available from most electronics
stores and music equipment stores.
Using a Microphone
The Mic jack (7) on the front panel allows
wireless cueing of on stage performers.
Important: This
1
/
4
” mono phone jack is designed
for an electret condenser microphone, and 9V DC
power is present at the input jack. If you wish to
use a conventional dynamic microphone, at least
20 dB more gain is required, and a preamp should
be used. If a preamp is used, be sure to have a
blocking capacitor (1 mfd) between the preamp
output and the EO3 mic input. If a dynamic mic
is plugged into the mic input by mistake, there
should be no damage because the current is
limited to 1.0 mA. If you have any questions,
contact Nady Customer Service (510.652.2411)
or your Nady dealer.
Audio Input Gain Adjustment
You can quickly adjust the transmitter to
obtain optimum performance with the
Input Gain control (8). The audio modulation
indicator LED, marked TX (6) will increase in
brightness as the control is turned clockwise,
and decrease in brightness as the control is
turned counterclockwise. When the “TX”
LED is flashing during transmission, the
transmitter is broadcasting properly. (If the
LED stays off continuously or barely flashes
at all, the input gain needs to be increased.
If the LED stays on continuously and does
not flash during modulation, the input is
overloading and needs to be decreased.)
You will also need to test the transmitter in
use with an EO3 receiver. This procedure is
easy to do, and is explained in the receiver
instructions, which follow.