ARMTEL ARMT.665230.006UM, Руководство пользователя

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DWEX DIGITAL LOUD-SPEAKING EXPLOSION PROOF CALL STATION
User Manual
armtel.com page 37/40
info@armtel.com © Armtel
Diagram of internal connection of the auxiliary amplifier is illustrated at Figure B.1.
Auxiliary amplifier
XS2
XS1
1
1
2
2
3
4
IN_25W-
48V
0V
A
B
1
2
IN_25W-
Main board
Х 2
Terminal block
4
3
1
2
25W_OUT_2
-POW_25W
25W_OUT_1
+POW_25W
Figure B.1 –
Connection of auxiliary amplifier
Connection of Uk
0
interface line and use of “phantom” power supply (supply voltage is
supplied via interface ci Ua, -Ub) is illustrated at Figure B.2.
DWEx
+ Ua
-Ub
+ U_POWER
5
6
7
8
- U_POWER
Central
exchange
( DCN, IPN)
9
10
+ U_FANTOM
- U_FANTOM
Terminal block
Pin No
Figure B.2 – Connection of Uk
0
interface line and use of “phantom” power supply
Note – Power supply of DWEx versions with auxiliary amplifier 25W by “phantom” power
supply circuit is prohibited.
Connection of the external power supply line U_POWER to the terminal block is
executed according to Figure B.3 with the polarity observed.