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Issue 3
BDM 300
The BDM 300 microphone is designed to be used with our MITRE and ADEPT and VIGIL
amplifier range. The microphone unit can be desk or wall mounted and is fitted with our
standard dynamic cardioid microphone. It is also provides a single press-to-talk button and a
25 way D plug which will interface with a BM25 Socket Box.
Technical Specification
Output impedance
200 Ohms
Sensitivity
-78dB @ 1KHz ref 0dB = 1v/microbar
Frequency response
100Hz – 10KHz
BDM300
C
ONNECTIONS
The microphone is terminated to a 25 way 'D' connector. It is supplied with a BMS25 single
gang socket box and connections are made using the screw terminals.
FUNCTION
BMS 25 CONNECTIONS
AUDIO
-
Output
floating
16
CABLE
SCREEN
-
Connect
to
0V 17
AUDIO
-
Output
floating
18
0V
19
ACCESS -
Connects to 0V when press-to-talk button operated
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