Vsc/3I Connector Signals - Data General AViiON Series Customer Documentation

Pin
#
RS-232
1 Chassis Ground
2 Transmit Data (TxD) >
3 Receive Data (RD)
4 Request to Send (RTS) >
5 Clear to Send (CTS)
6 Data Set Ready (DSR) <
7 Signal Ground (SG)
8 Data Carrier Detect
(DCD)
9
10
11
12
13
14
15 Transmit Clock (TxC)
16
17 Receive Clock (RC)
18
19
20 Data Terminal Ready
(DTR)
21
22
23
24 Transmit Clock (TxC)
25
NOTE: < indicates signal received by controller.
> indicates signal transmitted by controller.
A and B indicate polarity.
014–001867
Table C–3 VSC/3i Connector Signals
Electrical Interface
RS-530, RS-449, X.21
Shield
Transmit Data (TxD)
< Receive Data (RD)
Request to Send (RTS) A >
< Clear to Send (CTS)
Data Set Ready (DSR) A <
Signal Ground (SG)
Data Carrier Detect
< (DCD)
Receive Clock (RC)
Data Carrier Detect
(DCD)
Transmit Clock (TxC) B >
Transmit Clock (TxC) B <
Clear to Send (CTS)
Transmit Data
< Transmit Clock (TxC
Receive Data (RxD)
< Receive Clock (RC)
Request to Send (RTS) B >
Data Terminal Ready
> (DTR)
Data Set Ready (DSR) B <
Data Terminal Ready
(DTR)
> Transmit Clock (TxC) A >
External Device Connector Pin Assignments
V.35
A Shield
A > Send Data (SD)
A < Receive Data (RD)
Request to Send (RTS)
A < Clear to Send (CTS)
Data Set Ready (DSR)
A Signal Ground (SG)
Data Carrier Detect
A < (DCD)
B < Serial Clock Receive (SCR)
B <
Serial Clock Transmit
(SCTE)
Serial Clock Transmit
(SCT)
B <
B > Send Data (SD)
A < Serial Clock Transmit
(SCT)
B < Receive Data (RxD)
A < Serial Clock Receive (SCR)
Data Terminal Ready
A > (DTR)
B >
Serial Clock Transmit
(SCTE)
A >
A <
>
<
<
<
B <
B >
<
B >
A <
B <
A <
>
A >
C-9