Comtech EF Data RCS20 User Manual
Page 121
RCS20 M:N Redundancy Switch
Revision 15
Electrical Interfaces
MN-RCS20 and CD-RCS20
5–21
Pin No.
Signal Name
Signal
Direction
19
IDR ESC Backward Alarm Input - 3
ESCBWI 3
---
20
IBS ES Transmit Data A IDR ESC Backward Alarm Input 1
TXD-A BWI 1
Input
21
Mod Fault Open Collector Output
MOD FLT
Output
22
IBS ES Receive Data Output A
ES RXD-A
Output
23
IBS ES Data Set Ready (RS-232 Only)
ES DSR
Output
24
IDR ESC Transmit 8 Kbps Output Clock
ESCTXC-A
Output
25
IDR ESC Transmit 8 Kbps Output Data
ESCTXD-A
Input
26
IDR ESC Receive 8 Kbps Output Clock
ESCRXC-A
Output
27
IDR ESC Receive 8 Kbps Output Data
ESCRXD-A
Output
28
IDR ESC Backward Alarm Output 4 Normally Closed
ESCBWO 4NC
---
29
IBS Transmit Octet Input A
TXO-A
Input
30
Synchronous Data Mode A
SYNC DM-A
Output
31
Synchronous Data Clear to Send A
SYNC CS-A
Output
32
IBS Receive Octet Output A
RXO-A
Output
33
Synchronous Data Request to Send A
SYNC RS-A
Input
34
Synchronous Data Receiver Ready A
SYNC RR-A
Output
35
G.703 Send Data Input B
G703B SD-B
Input
36
Synchronous Data Send Data Input B
SYNC SD-B
Input
37
IDR ESC Backward Alarm Out 1 Normally Closed
ESCBWO 1 NC
---
38
G.703 Insert Data Input B
G703B IDI-B
Input
39
G.703 Drop Data Out B Synchronous Data Send Timing Output B
G.703B DDO-B SYNC ST-B
Output
40
IDR ESC Backward Alarm Out 2 Common
ESCBWO 2C
---
41
Synchronous Data Terminal Timing B
SYNC TT-B
Input
42
IDR ESC Backward Alarm Output 2 Normally Open
ESCBWO 2NO
---
43
Synchronous Data Receive Timing B
SYNC RT-B
Output
44
IDR ESC Backward Alarm Out 3 Normally Closed
ESCBWO 3NC
---
45
G.703 Insert Data Out Synchronous Data
IDO-B RD-B
Output
46
IDR ESC Backward Alarm Out 4 Common
ESCBWO 4C
---
47
External Clock Input B
BAL EXC-B
Input
48
Ground
GND
---
49
IDR ESC Audio Input Channel 1B
ESCAUDTX 1B
Input
50
IDR ESC Audio Input Channel 2B
ESCAUDTX 2B
Input
51
IDR ESC Audio Output Channel 1B
ESCAUDRX 1B
Output
52
IDR ESC Audio Output Channel 2B
ESCAUDRX 2B
Output
53
IDR ESC Backward Alarm Input 4
ESCBWI 4
---
54
IBS ES Transmit Data B IDR ESC Backward Alarm Input 2
TX-B BWI 2
Input
55
Demod Fault Open Collector Output
DMD FLT
Output
56
IBS ES Receive Data Input B
ES RXD-B
Output
57
Ground
GND
---
58
IDR ESC Transmit 8 Kbps Output Clock B
ESCTXC-B
Output