Kowa KE811CT instruction manual Sound has noise

Sound has noise	● Is the twisted pair cable near the AC line? It should be far	－
	from the line.
	● Is there a source causing noise close to AC adapter of this	－
	product ? A noise filter should be used in case of noise.
	● Is the CAT5e or a CAT6 cable properly connected to OUT 1	－
	or OUT2 of this product ?	→3-3.Cable mounting kit
	●Isn't unexpected fore applied to the CAT5e or CAT6 cable
	connected to OUT1 or OUT2 of this product ?	and Rack mounting kit
	● Is the cable properly connected to the AUDIO IN connector	－
	of this product?
	● Is the cable properly connected to the AUDIO OUT connector	－
	of the twisted pair receiver ?
	● Is the length of the cable within the recommended	→1-2.General Information
	transmission distance?
Serial	● Is the cable properly connected ?	→5-2.Connection of
communication	● Does the kind of cable suit?（straight or cross）	RS232C cable
can't be performed.		－
	● Does a setup of a front dip switch suit?	→4-1.The setting of
	● Does the command suit?	front dip switch
		→5-3-1.Control method
Command	● Is the cable properly connected ?	→5-2.Connection of
registration can't be	● Does the kind of cable suit?（straight or cross）	RS232C cable
performed.		－
	● Does a setup of a front dip switch suit?	→4-1.The setting of
		front dip switch

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