RCS20 M:N Redundancy Switch
Revision 15
Electrical Interfaces
MN-RCS20 and CD-RCS20
5–16
Pin No.
Signal
Description Direction
64K
Description
Direction
9
ESCAUDRX 2A Rx Audio 2A
Output
Rx Clock 64K A
Output
5.3.1.1.2.6
J9 | ES/ES (Earth Station-to-Earth Station)
The J9 | ES/ES Earth-Station-to-Earth-Station port is a 9-Pin Type D Female Asynchronous Data
Connector.
Pin No.
Signal
Description
Direction
1
RXD_B (485)
Receive Data B
Output
2
RXD_A (232/485) Receive Data A
Output
3
TXD_B (485)
Transmit Data B
Input
4
TXD_A (232/485) Transmit Data A
Input
5
GND
Signal Ground
---
6
DSR
Data Set Ready
Output
7
RTS
Request to Send
Input
8
CTS
Clear to Send
Output
9
NC
No Connection
Table 5-9. J6 | ES/ES 9-Pin Type D Female Connector (For use with DMD20/DMD50)
Pin No.
Signal
Description
Direction
1
RXD_B (485)
Receive Data B
Input
2
RXD_A (232/485) Receive Data A
Input
3
TXD_B (485)
Transmit Data B
Output
4
TXD_A (232/485) Transmit Data A
Output
5
GND
Signal Ground
---
6
DSR
No Connection
---
7
RTS
No Connection
---
8
CTS
No Connection
---
9
NC
No Connection
---
5.3.1.1.2.7
J7 | ESC ALM (Engineering Service Circuits Alarm Interface)
The J7 | ESC ALM port is a 25-Pin Type D Female Connector.
Pin No.
Signal Name
Signal
Direction
1
Ground
GND
---
2
Backward Alarm Out-1 NO ESCBWO 1 NO
---
3
No Connection
N/C
---
4
Backward Alarm Out-2 NO ESCBWO 1 NO
---
