Ikegami OCP-300, Operation Manual

Page: 253 / 274

22. Countermeasure against troubles 22-7
22.6 Trouble in Networking
The network connection may be subject to simultaneous malfunction of equipments
connected to the same network. This is a failure of the network itself and is a status that
normal command control is disabled. The network trouble has several causations.
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Wiring trouble
Check co-axial cables, co-axial connectors, F type connectors and 75 ohm end
terminals. Majority of network troubles are caused by these factors.
Shielding section of co-axial cable (co-axial connector) used in network connection is
NOT a GND line unlike the case for image signal, but it is a signal line. Erroneous
connection to GND line causes network trouble.
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Erroneous setting of network ID
In the event of duplicated ARC IDs in ARC networking, and duplicated IP
Addresses in Ethernet connection may cause trouble in entire network in addition
to trouble for duplicated equipments.
OCP-300 is capable of displaying ARC ID and Ethernet in the information screen.
Confirm that they are not duplicated with other equipments.
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Equipment trouble
A trouble in a certain equipment may cause trouble in entire network. Each
equipment needs to be separated momentarily in order to identify the equipment(s)
with trouble. OCP-300 is capable of separation from network by entering the
update screen by pressing and holding ENABLE switch. Pressing the ENABLE
switch again allows resuming to the network. MCP-200 is also capable of separation
from network by entering the update screen.
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Limitation to number of connection
You can connect maximum of 8 units of the MCP/OCPs to BS/CCU. The MCP/OCPs
including over 9 units does not operate. The MCP is counted as 1 unit regardless of
selection of camera. If the network contains a single MCP, the number of OCPs
available to connect to BS/CCU becomes 7, and if the number of the MCP is 2 the
number of the OCPs available to connect simultaneously becomes 6.
The maximum number of connection becomes 4 if BS/CCU is connected to network
without using BS hub.
Caution
Separation from network does not mean complete hardware separation.
Troubles such as device trouble of network driver may prevent separation
even by this procedure. In this case, connected COMMAND connector must
be disconnected.