Promax MO-180 Manual De Usuario página 114

In the simplest scenario, the MO-180 can be connected directly to a PC
equipped with a 10/100 Mbps network card using a cross-over CAT5 UTP RJ45
male/male Ethernet cable. If a LAN network is available, the MO-180 can be connected
to the network using either a hub or, more suitably, a network switch.
The RJ-45 socket on the MO-180 contains two LEDs. The left bi-colour LED
(looking from the rear) is the link LED. When it is off it means there is no link, whereas
when it is amber (green) it means that a 10 Mbps (100 Mbps) connection has been
detected. The right bi-colour LED is the activity LED. When it is off there is no activity
on the Ethernet link. Half-duplex and full-duplex connections are signalled with amber
and green colours, respectively.
Figure 6.- Connecting the MO-180 to an Ethernet network.
A software application called COM Port Redirector (CPR) Manager from
Lantronix can be found on the CD that came with the MO-180. Alternatively, this tool
can be freely downloaded from the Lantronix website.
The CPR Manager needs to be installed on the computer that will remotely
control the MO-180 via a virtual serial port. The installation of this software is self-
explanatory. The CPR Manager is able to create up to 255 virtual RS-232 serial ports
on the computer it is running on, associating a valid COM port number to the IP
address of a MO-180. The virtual COM port built on top of the Ethernet connection will
last for as long as the network connection with the MO-180 is available. A change in
the IP address of the MO-180 necessarily triggers a change in the virtual COM port
configuration or, alternatively, the creation of a new serial port mapped to the new
address.
The process of assigning a virtual COM port to a MO-180 has to be done only
once on the computer which will be used to remotely control the modulator. If all
modulators connected to a private network are given the same IP address, the CPR
Manager will use the same COM port to control each and everyone of them.
Page 44
Gateway
Virtual
Ethernet
COM port
over LAN
MO-180 SFN/MFN DVB-T/H MODULATOR
Mo-180 dvb-t m odul at or
pr om ax el ect r onica s .a.
INTERNET
Gateway
Virtual
COM port over
WLAN
(not recommended )
ERROR
MENU
LINE
USER'S MANUAL MO-180
04/2008