7
1)
Annular red indicator lamp to show the microphone state.
2)
Unidirectional electret MIC
3)
LCD
4)
IR sensor
5)
Menu/Back/Candidate 1
6)
Left/Candidate 2/yes
7)
Right/Candidate 3/No
8)
MIC ON/OFF key
9)
Chairman Priority
10)
Up/Candidate 4/ Abstain
11)
Down key/Sign in/Candidate 5
12)
Microphone power switch
13)
DC power input
1.3.5 Parameter of infrared conference system microphone unit
Items
Parameter
Transmission method
Wireless infrared
Audio channel
4
Carrier frequency band
6MHz-8MHz
Modulation method
FM
Infrared radiator consumption
+10dBM
Mic sensitivity
-44dB±2dB
Frequency response
100Hz-10KHz
S/N Ratio
>
70dB
T.H.D.
<
0.5%
Audio channel
Reference
sound
receiving 10-30cm
Transmission method
Wireless
Data channel
14
Frequency Range
901MHz-927MHz
Modulation method
FSK
Receiving sensitivity
-85dBM
Transmission consumption
10dBM
Data control
channel
Communication rate
100KBPS
Battery
LIP battery12V/4000MAH
Consumption Rating
8W
Operating temperature range
0-40 degree
Length of gooseneck
400mm (optional)
Dimensions
210×140×69mm
Microphone
N.W
900g (with battery)