Engineering Service Channel Data (J4); Table 2-11. Engineering Service Channel Data Connectors (J4) - Comtech EF Data SMS-7000 Installation And Operation Manual

Installation
2.6.2.3

Engineering Service Channel Data (J4)

The engineering service channel data connector is a 25-pin female D for IBS and D&I
data service. There is one connector per channel. The pinouts are shown in Table 2-11.

Table 2-11. Engineering Service Channel Data Connectors (J4)

Pin #
2–30
IBS
1 SHIELD
2 TXD A
3 RXD A
4 RTS/CTS
5 RTS/CTS
6 DSR
7 GND
8
9
10
11
12
13
14 TXD B
15 TXCK
16 RXD B
17 RXCK
18
19
20 EXC A
21
22
23 EXC B
24 SCTE A
SMS-7000 Modem Protection Switch
Signal Name
IDR D&I
SHIELD
TXD A
RXD A
C RTS/CTS
A RTS/CTS
B DSR
L GND
E
R
E
M
O TXD B
V TXCK
E RXD B
D RXCK
(TT)
Rev. 3