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Description 1 

ME1791A-F, ME1794A-F 

1. Features 

Ultra-miniature asynchronous short range modems: 

• 

Ultra-miniature modems using hybrid technology 

• 

Asynchronous transmission up to 19.2 kbps 

• 

Transmission range up to 21 km (13 miles) 

• 

No AC power required 

• 

9-pin RS-232/V.24 connector 

• 

Can be used with both STP and UTP 

• 

Compact, lightweight, easy to install. 

Versions 

The following versions of the modem are available: 

• 

ME1791A-F – modem with female DCE connector and terminal block line 
connector 

• 

ME1794A-F – modem with female DCE connector and RJ-45 line connector. 

Application 

Async

Computer

Asynchronous 

Terminal

4-wire

ME1791A-F,

ME1794A-F

ME1791A-F,

ME1794A-F

 

Figure 1.  Typical Application 

2. Description 

ME1791A-F and ME1794A-F, ultra-miniature asynchronous short range modems, 
are used for local data distribution, connecting full duplex asynchronous DTEs to 
computers.  
The modems ensure integrity of data transmission, using unconditioned 4-wire 
dedicated lines at data rates up to 19.2 kbps. It operates over distances up to 
21 km (13 miles) depending on wire gauge and data rate (see 

Table 1

). 

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