Installation manual REV:201107
BREAK-TWA
Twisted Wire Audio System
www.metel.eu
2/6
Description and technical parameters
TWA-MIC
is an outdoor microphone with symmetrical output directly to the UTP cable
TWA-MIC-1VPP
is an outdoor microphone with asymmetrical output 1Vpp
TWA-MIC-ECT
is an outdoor electret microphone 2.2 kΩ, 2.45VDC for connection to IP cameras
TWA-TX
is a single-channel transmitter with CINCH input, BOX design
TWA-RX
1-channel receiver indoor BOX
BREAK-RX8
is an 8-channel receiver with installation to 19" rack, BIAS outputs
Microphones TWA-MIC, transmitters TWA-Tx and receivers TWA-Rx constitute an integrated converter series for audio signal
capture and transmission. The microphones are omnidirectional and they are supplied in three modifications. The basic
modification is TWA-MIC designed for transmission of audio signal to long distances (up to 1000m) over UTP/FTP Cat5e cable.
TWA-Rx and Rx8 receivers are used for reverse conversion to asymmetric audio signal. TWA-MIC-ECT microphones are
connected, using mic. cable, directly to IP cameras mic. inputs (max. 10m) and modifications TWA-MIC-1VPP are connected
directly to DVR audio inputs (max. 100m).
TWA-Tx transmitters are already integrated in TWA-MIC. TWA-Tx transmitters are used for transmission of audio signal from
microphones from other manufacturers.
Note: In case of ground loops in the system we recommend using BREAK-PGS separators.
MIC
Bandwidth
200 – 15 000
Hz
Supply
10-30 / BIAS
VDC-AC / VDC
/ ECT
RX, RX8
Output level
max. 4
Vpp
Bandwidth
20 - 20000
Hz
TX, RX / RX8 Supply
10-16 / 10-30
VDC / VDC-AC
RX(TX) / RX8 - max. 2 VA
Environment
Operational range
–40...+75 (–20...+60)
o
C
(MIC)
Mechanical
Dimensions - w / h / l
MIC:
34 / 30 / 100
mm
Parameters
RX8:
19" / 1U / 22
mm
TX:
34 / 23 / 45
mm
RX:
43 / 30 / 65
mm
SNR
min. 60
dB
Consumption
max. 120 / 1.5
mA
/ ECT
Overvoltage protections
fine ( ECT without protections )
The producer retains the right to change any technical parameters without previous announcement.
TWA-MIC (1Vpp)
Installation upright
downward
20m
The microphone
sensitivity
-54dB +/-4dB
Recommended maximum
distance from the target
Parameter
Value
Unit
Note