Specifications

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CHAPTER 4: Installation
Once the Multi-Function Line Driver is properly configured, you can connect
it to your system. This chapter describes how to run twisted-pair cable
between your MFLDs and how to connect MFLDs to RS-232 equipment.
4.1 The Modem-to-Modem Line Cables and Connectors
The Multi-Function Line Driver supports data-only communication between
two RS-232 devices at distances to 12 miles (19.3 km) and data rates to 38.4
Kbps. There are two essential requirements for installing MFLDs:
1. They work in pairs; you must have one at each end of the twisted-pair
cable.
2. The Multi-Function Line Driver operates half-duplex over two wires (one
twisted pair) or full- or half-duplex over four wires (two twisted pairs). In
all applications, the twisted-pair wire must be between 19 and 26 AWG
(higher gauges might limit the distance that can be run), unconditioned,
dry, and metallic. Both shielded and unshielded cable yield favorable
results.
NOTE
The Multi-Function Line Driver can only communicate in a closed data
circuit with another Multi-Function Line Driver. It will not work with dialup
analog circuits, such as those used with standard modems. For further
information about acceptable wire grades, refer to the recommendations
in Appendix A.
For your convenience, three types of twisted-pair connectors are available
for the Multi-Function Line Driver. See Section 4.1.1 for further installation
instructions for the ME657 models, which have internal five-position terminal
blocks. Se Section 4.1.2 for further installation instructions for the ME658
models, which have female RJ-11 connectors, and the ME659 models, which
have female RJ-45 connectors.
4. Installation