4RF Aprisa XE - Page 225

Interface connections | 224
X.21 Serial Cable Assembly for DTE (Part number: Cab Sync X21MT)
Pin number Pin function Direction
1 Shield Ground -
2
9
Transmit+
Transmit-
Input
Input
3
10
Control+
Control-
Input
Input
4
11
Receive+
Receive-
Output
Output
5
12
Indication+
Indication-
Output
Output
6
13
Timing+
Timing-
Output
Output
8 Circuit Ground
X.21 Serial Cable Assembly for DCE (Part number: Cab Sync X21FC)
Pin number Pin function Direction
1 Shield Ground -
2
9
Transmit+
Transmit-
Output
Output
3
10
Control+
Control-
Output
Output
4
11
Receive+
Receive-
Input
Input
5
12
Indication+
Indication-
Input
Input
6
13
Timing+
Timing-
Input
Input
8 Circuit Ground