DC112 MODEM
2
4. INSTALLATION
Your DC112 is designed to be used on standard
device telephone lines. The DC112 connects to
the telephone line by means of a USOC RJ11C
jack. Connection to telephone company-
provided coin service (central office
implemented systems) is prohibited.
Connection to party lines service is subject to
State tariffs.
Connect the cable from the telephone jack to
the modem Figure 2. Connection to the
datalogger is done with a Campbell Scientific
SC12 Cable. Connect the 14 awg grounding
wire (provided with the DC112) to the grounding
terminal (GND) on the DC112 and to the
datalogger ground. If the enclosure has a
grounded bus bar, then connect the ground wire
to the bus bar instead of the datalogger ground.
The datalogger ground should be tied to earth
ground. See the grounding section of the
datalogger manual.
The goal of the telephone company is to provide
you with the best service it can. In order to do
this, it may occasionally be necessary for them
to make changes in their equipment,
operations, or procedures. If these changes
might affect your service or the operation of
your equipment, the telephone company will
give you notice, in writing, to allow you to make
any changes necessary to maintain
uninterrupted service.
If you have any questions about your telephone
line, such as how many pieces of equipment
you can connect to it, the telephone company
will provide this information upon request.
In certain circumstances, it may be necessary
for the telephone company to request
information from you concerning the equipment
which you have connected to your telephone
line. Upon request of the telephone company,
provide the FCC registration number and the
ringer equivalence number (REN) of the
equipment which is connected to your line; both
of these items are listed on the equipment label.
The sum of all of the REN's on your telephone
lines should be less than five in order to assure
proper service from the telephone company. In
some cases, a sum of five may not be usable
on a given line.
FIGURE 2. RJ11C Phone Modem Connections
