Specifications

Table Of Contents
The Asynchronous Data Unit (ADU)
Issue 11 December 1999
21-85
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