Barco PULSAR BG, Руководство пользователя

Страница: 22 / 126

Installation P
ULSAR
BG
Page 4-10
4.5.2 Communication Example And Installation For ROSA
A communication example is shown in the figure below. The communication between the headend
and the dispatching center in this example is established via a modem. The telephone network
(PSTN) is used to communicate with the PC’s.
The C
OMMBOX
(Communication Organizer) in the headend is used to connect all the P
ULSAR
modula-
tors with the R
OSA
system. For more information about the interconnections between C
OMMBOX
and
modem, refer to the R
OSA
manual.
The C
OMMBOX
has three RS-485 communication ports. Each port can be connected to maximum 32
ROSA controllable units. In total 96 units can be controlled and monitored with one C
OMMBOX
. Use a
9 wire flat cable (daisy chain) to connect the P
ULSAR
RS-485 port to the C
OMMBOX
.
With the P
ULSAR
application software, all important parameters can be controlled.
Before one can have communication, it is important to configure the communication port of each
P
ULSAR
. Once all the units are configured and connected to the C
OMMBOX
, the “AUTO-CONFIG”
function will poll and store all units that are connected. For more details, refer to the application
software manual of the C
OMMBOX
and P
ULSAR
.
PSTN
232 PSTN
Modem
Tel. N° 2
Lap Top
232
ROSA
Service Engineer
232 PSTN
Modem
Tel. N° 1
PC
232
ROSA
Dispatching Center
232
COMM-
232
485
485
485
BOX
232
FSM 860
485
485
Other RCDS/
ROSA device
485
PULSAR
485
PULSAR
485
PULSAR
485
PULSAR
232 PSTN
Modem
Tel. N° 1
HEADEND 1
HEADEND 2
232
COMM-
232
485
485
485
BOX
232 PSTN
Modem
Tel. N° 1
Correct use of connectors
Make sure that all connections to the P
ULSAR
are secure and that all cables are free of abrasions, tear
and cuts. Also make sure that no strain is put on any of the cables that might cause connection prob-
lems.
The F-type connectors on the rear panel of the modulator should only accept a coaxial cable center
conductor between 0.56 mm and 1.19 mm in diameter. Coaxial cable center conductor larger or
smaller than these diameters should not be used. If used, it may result in damage or loss of signal at
the F-type connector.
Due to the fact that the larger diameter center conductor (e.g. greater than 1.19 mm) will spread the
contacts of an F-type connector further apart, once a larger diameter is inserted into a F-type con-
nector, a smaller diameter center conductor should not be used in its place. If used, it may result in
loss of signal at the F-type connector.