Filter
Top Products
DEFINITYEnterpriseCommunicationsServerandSystem75andSystem85
Terminals and Adjuncts Reference
555-015-201
Issue 11
December 1999
Data Modules
21-84The Asynchronous Data Unit (ADU)
21
Refer to the following table for the different data and RS-232 connections.
Capabilities
The ADU has the following data capabilities.
■ Speed — Standard data rates from 0.3 to 19.2 kbps and non standard data
rates below 1.8 kbps. The auto adjust option will automatically match the
transmission speed to the attached RS-232.
■ Full-duplex
■ Asynchronous
■ Built-in protection against voltage surges
Power
Under certain conditions the ADU is powered by the attached RS-232 equipment.
When the power provided by the RS-232 is inadequate (+
7 volts are required on
pins 20 and 2), an external power transformer, adapter, and patch cord are
required.
Table 21-4. Data Connections for the ADU
ADU Model Connector to RS-232 Data Connector
Z3A1 25-pin plug on 3-foot cable Modular
Z3A2 25-pin plug (no cable) Modular
Z3A3 110-type patch cord 110-type patch cord
Z3A4 25-pin receptacle on 3-foot cable Modular