Toa YW-4500 - Manual (Page 2)

2
2. GENERAL DESCRIPTION
The TOA YW-4500 is an indoor dipole antenna designed to be used in a UHF band wireless system. A power lamp is
provided on the unit's bottom side to indicate the power supply status (it lights when power is supplied.).
Power for the YW-4500 is supplied on a coaxial cable from the antenna connector of the WT-5800, WT-5805, WT-
4820, or WD-4800.
Cable loss can be compensated for by a built-in RF signal booster.
3. INSTALLATION PRECAUTIONS
• Avoid installing the unit in humid or dusty locations, in locations exposed to the direct sunlight, near the heaters, or in
locations generating sooty smoke or steam.
• When installing the YW-4500 in a room of a tall building, be sure to position it more than 1 m apart from a window
to minimize interference caused by external noises of radio waves.
• When using a wireless microphone, keep it 3 m or more away from the YW-4500.
Doing otherwise may cause unused other channels to operate or radio interference to occur.
• When using two or more antennas, they should be spaced out 6 to 18 m apart from each other.
• Take special care when treating coaxial cable end and when connecting the cable to the antenna and BNC
connector. Incomplete cable treatment and connection deteriorate receiving sensitivity, and increase interference
caused by external noises.
• Use the coaxial cable of 75 Ω impedance.
4. NOMENCLATURE
[Front]
[Side] [Bottom]
[Top]
85 105
120 128
120 11
6
Sets attenuation level for 0, –10, or
–20 dB positions.
(For details, refer to "7. ATTENUATOR
SWITCH SETTING.")
Lights when power is
supplied to the unit.
Attenuator switch
Power lamp
Bottom case Top case
Unit: mm