Pioneer XW-HTP550 Service Manual page 34

1
Know-how : When audio is interrupted and unstable
Purpose : This wireless speaker system usese a 2.4GHz radio wave frequency, which is a band used by other wireless system (See list
below). There is a case that becomes to interrupt the the sound, and becomes unstable by the influence from other product.
A
The following knowledge is necessary to divide whether it is the interference or the trouble of the product.
Confirm whether there is some equipment that gives the influence.
Product uses 2.4GHz
Product Type
Wireless LAN
Bluetooth
B
Microwave ovens
Others
* : It differs according to the product. It follows the classification if it was written "DS" and "FH" in the indication of the product.
When you cannot specify the equipment
Even if it is used in the neighborhood, it is likely to be influenced.
The category can be forecast from the symptom.
If sound is interrupted at a constant cycle, there is a possibility that it is to be near the FHSS equipment.
C
Action method
1 ) DSSS It is possible to improve by changing channel.
2 ) FHSS It is not possible to avoid by changing the channel. Please separate the distance between equipment or turn off
the power while using wireless speaker system.
3 ) Microwave According to the product, it is possible to improve by set channel to 1ch.
Please separate the distance between equipment.
4 ) Other Try the switch of the channel or changing the position of the product, etc.
D
If there is no product using 2.4GHz
The radio waves received by the wireless speaker include the radio wave coming directly from the transmitter (direct wave) and waves
coming from various directions due to reflections by the walls, furnitures and building (reflected waves). The reflected waves (due to
obstacles and reflecting objects) further produce a variety of reflected waves as well as variation in reception condition depending on
loacations. If the audio cannot be received properly due to this phenomenon, try to move the location of the transmitter or the
wireless speaker a little.
E
F
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2
Detail
802.11b,g (except 802.11a),
Wireless broad band routers
Headset, PDA, wireless mouse, keyboard, etc.
Some baby monitors, Cordless phones,
Wireless AV equipment, etc.
XW-HTP550
2
3
Category
DSSS
FHSS
microwave oven
*
3
4
4