Black Box ME840A-S Modem User Manual


 
12
SHORT HAUL MODEM (SHM-FSK)
Figure 2-3 is an illustration of a typical full-duplex or half-duplex,
point-to-point application.
Figure 2-3. Typical Application Connections.
Programmable
Logic Controller
(PLC)
SHM-FSK
SHM-FSK
Remote
Telemetry Unit
RS-232
Cable
RS-232
Cable
Copper Pairs up to
48,000 feet
(9.1 miles or 14.6 km)