HDC-UHD Series Command Guide
9
2.2 LAN communication
2.2.1 LAN connector specification
Pin assignment of the LAN connector is as follows.
Light in green while link is established.
Blinks in green while data is being
sent/received.
Light in orange if the send/receive
rate is 100 Mbps.
Goes off if it is 10 Mbps.
8
1
LAN connector
8-pin RJ-45 connector
(Rear panel)
RX+
N.C.
TX+
Pin#
1
3
2
4
6
5
7
8
Signal Name
TX-
N.C.
RX-
N.C.
N.C.
(Transmitted Data +)
(Transmitted Data -)
(Received Data +)
(Not Connected)*
(Received Data -)
(Not Connected)*
(Not Connected)*
(Not Connected)*
MDI
TX+
N.C.
RX+
RX-
N.C.
TX-
N.C.
N.C.
(Received Data +)
(Received Data -)
(Transmitted Data +)
(Not Connected)*
(Transmitted Data -)
(Not Connected)*
(Not Connected)*
(Not Connected)*
MDI-X
*Not used
[Fig. 2.5] LAN connector
Since Auto MDI/MDI-X that distinguishes and switches straight/cross cables automatically is supported, extra
care is not necessary to connect the HDC to PC, HUB or the like.
2.2.2 LAN communication specification
[Table 2.2] Specification of LAN communication
Physical layer
10Base-T (IEEE802.3i)/100Base-TX (IEEE802.3u)
Network layer
ARP, IP, ICMP
Transport layer
TCP
Port used for command control
: 1100, 6000 to 6999
Port used for WEB browser control (HTTP) : 80
Application layer
HTTP, TELNET
Note:
Up to 8 connections can be used simultaneously. (4 connections for WEB browser)
【
See: 2.2.4 The number of TCP-IP connections