Polycom P001 manual Play the VCR or DVD to test the audio

User’s Guide for the Polycom RealPresence Group Series

Diagnostic Screen	Description
Audio Meter	Measures the strength of audio signals from the
	microphone or microphones, far-end audio, VCR audio,
	and any device connected to the audio line in.
	• To check the microphone or microphones, speak into
	the microphone.
	• To check far-end audio, ask a participant at the far
	end to speak or call a phone in the far-end room to
	hear it ring.
	• To check a VCR or DVD, connect it to the VCR inputs
	and play the VCR or DVD to test the audio.
	The Audio Meters indicate peak signal levels. Set signal
	levels so that you see peaks between +3dB and +7dB
	with normal speech and program material. Occasional
	peaks of +12dB to +16dB with loud transient noises are
	considered acceptable. A meter reading of +20dB
	corresponds to 0dBFS in the Polycom RealPresence
	Group system audio. A signal at this level is likely
	clipping the audio system.
	Meters function only when the associated input is
	enabled.
	Note: Some audio meters are unavailable when a
	SoundStructure digital mixer is connected to the
	Polycom RealPresence Group system.
Reset System	Note: Do not use this setting unless your administrator
	tells you to do so.
	When you choose Reset System using the remote
	control, the system’s user interface allows you to do the
	following:
	• Keep your system settings (such as system name and
	network configuration) or restore factory settings.
	• Keep or delete the directory stored on the system.
	System reset does not affect the global directory.
	• Keep or delete certificates stored on the system.
Near End Loop	Tests the internal audio encoders and decoders, the
	external microphones and speakers, the internal video
	encoders and decoders, and the external cameras and
	monitors.
	Monitor 1 displays the video and plays the audio that
	would be sent to the far end in a call.
	This test is not available when you are in a call.

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