NJR-CTB User
’s Guide
16
7.3 Cabling
Follow the precautions below when connecting NJR-CTB to an external devices.
・
Read the user
’s guides of the external devices carefully.
・
When connecting a cable to the NJR-CTB or a compatible product, dissipate static electricity by touching
grounded metal such as racks before handling single cables. Failure to observe this precaution may
result in ESD (electrostatic discharge) damage.
・
Turn off all devices.
・
Be sure to fully seat all plugs and connections and dress cables to reduce stress on connectors.
7.3.1 Connecting LAN cable
The NJR-T01UHD and NJR-R01UHD send broadcast packets through the 10GbE LAN ports periodically for
the purposes of internal system management. If the 10GbE LAN port is connected to an existing network, it
may cause a
broadcast storm
* and may severely interfere with normal network operation. Contact IDK
before attempting to connect the 10GbE LAN ports of an IP-NINJAR system to any existing network
infrastructure.
*A broadcast storm occurs when a network is overwhelmed by continuous broadcast traffic resulting
in a network meltdown.
During installation, it is important to avoid the creation of network loops. Contact IDK if you require assistance
with network implementation.
7.3.1.1 MAINTENANCE / LAN port specification
LAN and MAINTENANCE port assignments are as follows.
Since Auto MDI / MDI-X that distinguishes and switches straight/cross cables automatically is supported,
extra care is not necessary to connect the NJR-CTB to PC, HUB or the like.
1
8
8-pin RJ-45 module
connector
Pin
number
Signal
MDI
MDI-X
1000BASE-T
100BASE-TX/10BASE-T
1000BASE-T
100BASE-TX/10BASE-T
1
TRX+ (Transmitted/Received
data+)
TX+ (Transmitted data+)
TRX+ (Transmitted/Received
data+)
RX+ (Received data+)
2
TRX- (Transmitted/Received
data-)
TX-
(Transmitted data-)
TRX- (Transmitted/Received
data-)
RX-
(Received data-)
3
TRX+ (Transmitted/Received
data+)
RX+ (Received data+)
TRX+ (Transmitted/Received
data+)
TX+ (Transmitted data+)
4
TRX+ (Transmitted/Received
data+)
N.C. (No Connection)
TRX+ (Transmitted/Received
data+)
N.C. (No Connection)
5
TRX- (Transmitted/Received
N.C. (No Connection)
TRX- (Transmitted/Received
N.C. (No Connection)