Teledyne 4220, Installation And Operation Manual, Page: 110 / 198

4220 Flow Meter
Section 5 Options and Accessories
5-2
mode. It operates at 300/1200/2400 baud. This modem has
speech and tone capabilities and comes with a connect cable to
attach to the telephone line.
Note
The modem is disabled when an interrogator cable is con-
nected to the flow meter’s interrogator port. It cannot receive
incoming calls, and the alarm dialout will be rendered inopera-
ble, while this cable is connected.
Disconnect the interroga-
tor cable in order to use the 4200T Modem.
5.1.2 Modems and Flowlink
Software
The 4200T Modem communicates with Isco's Flowlink data
storage and acquisition software, setting up the flow meter to
collect blocks of data. Flowlink allows storage and interpretation
of flow meter data. Other Flowlink software packages can write
reports with this collected data.
5.1.3 Connection to a
Telephone Line
The FCC (Federal Communications Commission) governs com-
munications over telephone lines. Your local telephone company
will provide you with the line between the flow meter and the
computer. Call them for connection information. The FCC
requires the following information be published for connecting
the modem to the phone line.
“This equipment complies with part 68 of the FCC rules.
On the case of this equipment is a label that contains,
among other information, the FCC registration number
and ringer equivalence number for this equipment. If
requested, this information must be provided to the tele-
phone company.”
“This equipment uses the following USOC jacks: USOC
RJ11C.
“The REN is used to determine the quantity of devices
that may be connected to the telephone line. Excessive
REN's on the telephone line may result in the devices not
ringing in response to an incoming call. In most, but not
all areas, the sum of REN's should not exceed five (5.0). To
be certain of the number of devices that may be con-
nected to the line, as determined by the total REN's,
c o n t a c t t h e t e l e p h o n e c o m p a n y t o d e t e r m i n e t h e
maximum REN for the calling area.
“If this equipment causes harm to the telephone network,
the telephone company will notify you in advance that
temporary discontinuance of service may be required. If
advance notice isn't practical, the telephone company will
notify the customer as soon as possible. Also, you will be
advised of your right to file a complaint with the FCC if
you believe it is necessary.
“The telephone company may make changes in its facil-
ities, equipment, operations, or procedures that could
affect the operation of the equipment. If this happens, the