Specifications

Table Of Contents
The Multiple Asynchronous Data Unit (MADU)
Issue 11 December 1999
21-87
The Multiple Asynchronous Data Unit
(MADU)
The MADU provides an RS-232-C compatible, full-duplex, asynchronous data
interface which provides host computer access for a variety of DTE devices. The
MADU converts information sent to it from a host computer in RS-232-C protocol
to low-voltage signals. These signals can be transmitted over standard building
wiring or to the switch over much greater distances than regular EIA signals may
travel. The host computer is set up to appear as a DCE device to the MADU. The
MADU sends the converted information out through its building wiring interface.
Capabilities
The MADU has the following data capabilities.
Speed Standard data rates from 0.3 to 19.2 kbps and nonstandard data
rates below 1.8 kbps. The auto adjust option will automatically match the
transmission speed to the attached RS-232-C device.
Full-duplex
Asynchronous
Built in protection against voltage surges
Physical Description
Dimensions stand-alone housing
NOTE:
The following dimensions are approximate.
Width = 8-3/4 inches
Depth = 12 inches
Height = 2-3/4 inches
Dimensions multiple mount carrier
NOTE:
The following dimensions are approximate.
Width = 17-1/2 inches
Depth = 18 inches
Height = 8-3/4 inches