ET107 Weather Station
31
FIGURE 5-23. Close-up of the terminals and 9-pin ports in the ET107
(battery not shown)
5.6.2 Phone Modem
Phone modems enable communications between the ET107 enclosure and a
Hayes compatible modem at your computer over a dedicated phone line. Phone
line surge protection is built into the enclosure. By default, the COM220 phone
modem is configured for SDC7.
Connects with
phone modem’s
RJ-11 patch cord
Connects with a
phone modem, Rad
modem, or radio via
the ribbon cable
Connects with the
Rad modem’s 4-wire
patch cable
Connects with a
laptop via an RS-232
serial cable or a
cellular modem via a
null modem cable