TELEDYNE API
M703E Calibrator Operator’s Manual Operating The M703E over the Serial I/O Ports

7.5. REMOTE ACCESS VIA THE ETHERNET

When equipped with the optional Ethernet interface, the calibrator can be connected to any standard 10BaseT
Ethernet network via low-cost network hubs, switches or routers. The interface operates as a standard TCP/IP
device on port 3000. This allows a remote computer to connect through the internet to the calibrator using
APICOM, terminal emulators or other programs.
The firmware on board the Ethernet card automatically sets the communication modes and baud rate (115,200
kBaud) for the COM2 port. Once the Ethernet option is installed and activated, the COM2 submenu is replaced
by a new submenu, INET. This submenu is used to manage and configure the Ethernet interface with your LAN
or Internet Server(s).
The card has four LEDs that are visible on the rear panel of the calibrator, indicating its current operating status.
Table 7-4: Ethernet Status Indicators
LED FUNCTION
LNK (green) ON when connection to the LAN is valid.
ACT (yellow) Flickers on any activity on the LAN.
TxD (green) Flickers when the RS-232 port is transmitting data.
RxD (yellow) Flickers when the RS-232 port is receiving data.

7.5.1. ETHERNET CARD COM2 COMMUNICATION MODES AND

BAUD RATE

The firmware on board the Ethernet card automatically sets the communication modes for the COM2 port. The
baud rate is also automatically set at 115 200 kBaud.

7.5.2. CONFIGURING THE ETHERNET INTERFACE OPTION USING

DHCP

The Ethernet option for you M703E uses Dynamic Host Configuration Protocol (DHCP) to configure its interface
with your LAN automatically. This requires your network servers also be running DHCP. The calibrator will do
this the first time you turn the instrument on after it has been physically connected to your network. Once the
instrument is connected and turned on, it will appear as an active device on your network without any extra set
up steps or lengthy procedures.
NOTE
It is a good idea to check the INET settings the first time you power up your calibrator after it has been
physically connected to the LAN/Internet to make sure that the DHCP has successfully downloaded the
appropriate information from you network server(s).
The Ethernet configuration properties are viewable via the calibrator’s front panel.
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