ADTRAN Atlas 550 - Manual (Page 40)

Chapter 2. Installation
2-4 ATLAS 550 User Manual 61200305L1-1
Figure 2-1. ATLAS 550 Rear Panel
Control/Chain In Port
The Control/Chain In port (EIA-232) connects to a computer or modem or
to another ATLAS 550 Base Unit. The control port input provides the follow-
ing functions:
• Accepts EIA-232 input from a PC or a modem for controlling the ATLAS
550.
• Operates at 2400, 9600, 19200, or 38400 bps.
• Acts as input for either PC control or a chained connection.
• Acts as an interface for flash memory software downloads using
XMODEM.
The Control/Chain In connection follows, and Table 2-1 shows the pinout.
NETWORK 1 NETWORK 2
1
2
3
4
ETHERNET CONTROL
IN OUT
RELAY ALARM
O I
FUSE RATING: 2A/250V SLO-BLO
90-240VAC, 2A, 50/60Hz
NC NO COM GND
ALL
E MPTY
SLOTS
MUST
B E
COVERED
WITH
BLANK
P ANELS
CAUTION:
FOR
CONTINUED
PROTECTION
AGAINST
RISK
OF
FIRE,
REPLACE
ONL
Y
WITH
SAME
T YPE
AND
R A T ING
O F F USE.
MON
NETWORK IN OUT IN OUT NETWORK MON
T1 NETWORK MODULE TEST 500 Series
Blank Panel
Covering an
Unused Network Slot
Blank Panel
Covering an
Unused Option Slot
Network 1
DB-15
Connection
Port
Network 1
RJ-48C
Connection
Port
Bantam
Test Jacks
Power
Switch
Supplemental
Earth
Ground Lug
AC Power
Receptacle
Alarm Relay
Connection
External Alarm Relay
Monitor Connection
Control/
Chain
In
Control/
Chain
Out
RJ-48C
Ethernet
10/100BaseT
Connection
Port
O I
Connector type RJ-48C
Part number AMP# 555164-2
Table 2-1. Control/Chain In Pinout
PIN NAME DESCRIPTION
1 GND Ground - connected to unit chassis
2 RTS Request to send - flow control
3 RXDATA Data received by the ATLAS 550
4 DTR Data terminal ready
5 TXDATA Data transmitted by the ATLAS 550
6 CD Carrier detect
7 UNUSED —
8 CTS Clear to send - flow control