Telebit NetBlazer STi - Page 35

90453-02 Rev A0 Cable Applications B-5
Figure B-4. NS1 Sync Board RS-232 Cable Configuration
To use the RS-422/RS-449 interface to the DSU/CSU, you need a special
cable with a male DB-25 connector for the NetBlazer and a male DB-37
connector for the DSU/CSU. Configure the cable as shown in Figure B-5.
This cable is available from Telebit as p/n 14385-01.
DB-25M
1
2
3
4
5
6
7
8
15
DB-25F
1
2
3
4
5
6
7
8
15
Protective Ground
Transmitted Data (TD)
Received Data (RD)
Request to Send (RTS)
Clear to Send (CTS)
Data Set Ready
Signal Ground
Data Carrier Detected (DCD)
Transmit Clock (TxCLK)
17
20
22
17
20
22
Receive Clock (RxCLK)
DTR
Ring Indicator (RI)
Book Page 5 Thursday, March 27, 1997 10:55 AM