User Manual

2240 Fiber Optic Modem

4. Data Interfaces

4.1 Data Interfaces Overview

A variety of interfaces are available for the 2240 Modem (see following listing).

RS-423 / 232 CCITT V.35

RS-449 Transparent T1 / E1

RS-449 / RS-423 (MC1) CCITT V.35 / RS-423 (MC2)

RS-530 Programmable RS-530

TwinAx 422 TTL / BNC

Twinaxial Mil-Std 188-114C DC-37 Mil-Std 188-114

Each conforms to existing standards. Refer to Section 7, "Specifications," for

applicable standards/physical connector types. Refer to Section 7.5, "2240 Fiber

Optic Modem Configurations," for a list of available interface options.

In general, all interface modules are configured as Data Communications

Equipment (DCE). All devices supports a variety of control leads and auxiliary

channels. The 2240 provides these signals as end-to-end paths. See each

respective section for a general description of interface features. Figure 4-1

shows the interchangeability of interfaces.

Figure 4-1.

Interchangeable

Interfaces