Introduction
HE4000 Encoding System
2.3.1 Synchronous Port
The synchronous port accepts RS-422 input at 1 Kbps to 20 Mbps. The auxiliary data
synchronous port pin assignment is listed in the following table:
Aux Data Port Pin Assignments: Synchronous - RS-422
Pins
Signal
Direction
Definition
1
Unused
-
-
2
ST+
Out
Send Timing
3
SD+
In
Transmit Data
4
TT-
In
Terminal Timing
5
GND
-
Ground
6
ST-
Out
Send Timing
7
Unused
-
-
8
SD-
In
Transmit Data
9
TT+
In
Terminal Timing
Shell
GND
-
Ground-
2.3.2 Asynchronous Port
The asynchronous port accepts RS-432 input at 1 Kbps to 20 Mbps. The auxiliary data
asynchronous port pin assignment is listed in the following table:
Aux Data Port Pin Assignments: Asynchronous – RS232
Pins
Signal
Direction
Definition
1
Unused
-
-
2
Unused
-
-
3
TD
In
Transmit Data
4
Unused
-
-
5
GND
-
Ground
6
Unused
-
-
7
RTS
In
Ready to Send
8
CTS
Out
Clear to Send
9
Unused
-
-
2-6
01-0951-404 Rev B
