ADTRAN 1200182L1, Руководство пользователя

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Chapter 2. Installation Wiring
2-2 Async-232 Module User Manual 61200182L1-1
Figure 2-1. Installing the Async-232 Module
WIRING
Each Async-232 Module port provides a single DB25 DCE connector. The connec-
tor pinout is given in Table 2-1.
.
POWER-UP AND INITIALIZATION
When the Async-232 Module is inserted into the ATLAS chassis, the front panel
STATUS indicator blinks red, yellow, and green for a time. Previously configured
settings for the Async-232 Module are automatically restored upon power-up.
When the Async-232 Module is ready for operation, the STATUS indicator
remains solid green. At this time a system self-test can be invoked, as described
in ATLAS User Manual.
Table 2-1. DB25 Connection Pinout
Pin Name Description
1 Shield Shielded ground connection
2 TXD Transmit data from DTE
3 RXD Receive data to DTE
4 RTS Request to send from DTE
5 CTS Clear to send to DTE
6 DSR Data set ready to DTE
7 GND Ground
8 DCD Data carrier detect to DTE
9, 10, 11, 12, 13,
14, 15, 16, 17, 18,
19, 21, 23, 24, 25 Unused n/a
20 DTR Data terminal ready from DTE
22 RI Ring indicator to DTE