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4.1 Connecting an Audio Input Device
Study the terminal audio input interfaces before connecting the terminal to an audio input device
so that connections can be made quickly and properly.
describes the types of audio input interfaces and supported audio sources.
Table 4-1
Description of audio input interfaces
Audio Input
Interface
Type
Features of the Audio That Can
Be Received
MIC 1
XLR cannon connector
Mono audio channel/Stereo
microphone
MIC 2
XLR cannon connector
Mono audio channel/Stereo
microphone
MIC LAN-POE
LAN network interface
Microphone array
AUDIO IN (L
and R)
RCA interface
Mono audio channel/Stereo line
input
4.1.1 Connecting a VPM210 Microphone Array
When cascading the HUAWEI VPM210 microphone arrays (VPM210s or microphone arrays
for short), ensure that the connection between the primary and secondary microphone arrays is
proper.
The microphone array can work with the HUAWEI 9000 HD terminal series. Each terminal can
support the cascading of up to three VPM210s. When two or three VPM210s are cascaded, one
functions as the primary microphone array and the others as the secondary microphone arrays.
The audio data collected by the secondary microphone arrays is sent to the primary microphone
array for mixing. After the data for the left and right audio channels is generated, the primary
microphone array sends the data to the terminal. Note that a microphone array is assigned as
primary array not due to any scientific reasoning but for logical purposes and that a primary
microphone array is not necessarily the microphone array that is nearest to the HD terminal.
Status Indicators on the VPM210
The status indicators can indicate the current working status of the VPM210 quickly.
and
describe the status indicators.
Table 4-2
Description of the status indicators on the VPM210
Indicator Status
Status of the VPM210
The indicators are all in red.
The microphone is muted.
The indicators are all in blue.
The VPM210 is working properly.
HUAWEI 9000 HD Video Terminal
Administrator Guide
4 Microphone and Speaker
Issue 09 (2012-09-03)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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