Interconnection Of The Umx-02/0 And The Rs-485 Card Of The Pc; Connection Of The Ground Connection To The Chassis - Optimus UMX-02/0 Manual De Instrucciones

2.2.2. Interconnection of the UMX-02/0 and the RS-485 card of the PC

D-SUB MALE
CONNECTOR
RS-485 P.C.
CONNECTION
COM 6
PORT 2

2.3. Connection of the ground connection to the chassis

In all public address installations it is very important that there is one single point of connection between
the signal ground connection and the mains supply ground contact.
If the public address installation is composed of several equipment units, their chassis will probably be
joined, either by means of the ground terminal of the mains connection, or because they are fi tted in a
rack cabinet.
If the ground connections are also joined by the signal circuits, it is advisable to remove the jumper
between the ground connection and the chassis from all the units except one.
To separate the ground connection from the chassis on the UMX-02/0, remove the panel of the power-
control module and extract jumper JP1.
2 4
V
R X
O F
F
T X
O N
R S R S
- 4 8 - 4 8
5 5
O U O U
T T
R S R S
- 4 8 - 4 8
5 5
I N I N
U M
X -
0 2
/ 0
UMX-02/0 v1.0
UMX-02/0
D-SUB FEMALE
CONNECTOR
5
4
3
2
1 9
8
7
6
Not
connected
DATA B
120
DATA A
Figure 4
F u F u
s e s e
3 A 3 A
Figure 5
RJ-45
1
4
DATA B ( )
DATA A ( )
5
8
SHIELD
ENGLISH
TO
UMX-02/0
RS-485 IN
49
Eng