E-Mon EIDR-16J*RJ - Manual (Page 16)

INTERVAL DATA RECORDER (IDR)
62-0394-03 16
6.0 SERIAL COMMUNICATIONS (EZ7)
(CONTINUED)
d. RS-232 Key with Built-In Modem (USBK)
The RS-232 key with built-in modem connects the entire RS-485 network of
IDRs to a telephone line.
** Refer to the previous section, “Connecting IDRs to the RS-232 key using
RS-485.” Connect the RS-485 network via Method 1 or Method 2.
On the back panel of the RS-232 Key/modem, the left jack (RS232) is not
used in most cases since there is no local host computer.
The two jacks at the top center of the rear panel on the RS-232 key/modem
are for connecting to the phone line. Connect one of these two jacks to the
telephone line.
IMPORTANT:
The telephone line should be dedicated exclusively to the automatic meter
reading system. Never connect to a phone line that has other modems or fax
machines connected. If there are telephones connected to this phone line,
the proprietor must be aware that all phones must be on “hook” in order for
the modem to work. A dedicated telephone line is recommended for system
reliability.
e. Baud Rate
The communication baud rate is 9600 baud (factory default).
When using the IDR with a modem, the rate of 9600 should always be
selected.