Section 2, Engineering Guidelines ATLAS 550 System Manual
38 © 2002 ADTRAN, Inc. 61200305L1-1F
39 RTS-B 1 76 RXC-A 1
40 RTS-A 2 77 RXD-B 1
78 RXD-A 1
Connector type EIA-530
System part number 4200754L2
Table 18. EIA-530 Connector Pinout
PIN SIGNAL DESCRIPTION PIN SIGNAL DESCRIPTION
1 Shield (Ground) 13 Clear to Send (B)
2 Transmit Data (A) 14 Transmit Data (B)
3 Received Data (A) 15 Transmit Clock (A)
4 Request to Send (A) 16 Received Data (B)
5 Clear to Send (A) 17 Receive Clock (A)
6 DCE Ready (A) 18 Local Loopback *
7 Signal Ground 19 Request to Send (B)
8 Carrier Detect (A) 20 DTE Ready (A)
9 Received Clock (B) 21 Remote Loopback *
10 Carrier Detect (B) 22 DCE Ready (B)
11 Ext. Transmit Clock (B) 23 DTE Ready (B)
12 Transmit Clock (B) 24 Ext. Transmit Clock (A)
25 Test Mode *
* Ignored by Dual USSI Module
Table 17. DB-78 Connector Pinout (Continued)
PIN SIGNAL DESCRIPTION PIN SIGNAL DESCRIPTION
Note: 1 or 2 indicates the port on the USSI Module