Toa YW-3500 - Manual (Page 2)

2. GENERAL DESCRIPTION
The TOA YW-3500 is a indoor-use dipole antenna for VHF band wireless systems. It incorporates a band-
pass filter and a booster amplifier, and is equipped with an LED to check its operation.
3. INSTALLATION PRECAUTIONS
• When installing the YW-3500 in a room of a tall building, be sure to position it more than 1 m from a window
to minimize interference caused by broadcasting or commercial radio waves of external noise.
• To avoid accidental operation of channels not in use or radio interference, there must be the distance
greater than 3 m between the YW-3500 and the wireless microphone. Setting the antenna within 3 m of the
wireless microphone may cause an unselected channel to be operated or radio interference to be generated.
• When using two or more antennas, they should be spaced out 6 to
18 m apart from each other.
• Take special care when stripping the end of coaxial cable, and
when connecting the cable end of the antenna and BNC connector.
Incomplete stripping and connection deteriorates receiving
sensitivity, and increases interference caused by external noise.
• Use the coaxial cable with 75 Ω impedance.
• Do not install the YW-3500 near metal or power cables (within 30
cm from the antenna element). Failure to do so will cause the
receiving sensitivity to deteriorate.
• When installing the YW-3500, be sure the antenna element tip is
over 5 cm away from the ceiling, and over 2.4 m from the floor.
(See the figure on the right.)
4. NOMENCLATURE AND DIMENSIONAL DIAGRAM
Unit: mm
5. INSTALLATION PROCEDURES
5.1. Attach the frame to the wall.
5.1.1. If the coaxial cable is wired over the wall from the ceiling or floor
Step 1. Cut the cable outlet of the frame using cutting pliers, etc.
Step 2. Secure the frame to the wall by means of two accessory screws
with the frame outlet oriented toward the direction the cable comes
from. Draw the cable through the outlet as shown below.
Tapping screw
for wooden wall
4 x 25
Frame Cable outlet
Antenna
element
184 mm
850 mm
441 mm
68.5 mm
Over 50 mm from the ceiling
Over 2.4 m from the floor
850
44
26
197
32
68.5 90.5
Coaxial cable drawing (2 methods available)
In-use lamp
(red LED)
Base fixing screw
Antenna element
Base Frame
Cable outlet