Operator's Guide B-3
DTE Device DCE Device
Pin # Signal Abbreviation Pin #
1 Frame Ground FG 1
2
%
Transmitted Data TxD
%
2
3
&
Received Data RxD
&
3
4
%
Request To Send RTS
%
4
5
&
Clear To Send CTS
&
5
6
&
Data Set Ready DSR
&
6
7 Signal Ground SG 7
8
&
Data Carrier Detect DCD
&
8
9
&
Pos. DC Test Voltage +V
&
9
10
&
Neg. DC Test Voltage -V
&
10
11
&
Equalizer Mode QM
&
11
12
&
Sec. Data Carrier Detect (S)DCD
&
12
13
&
Sec. Clear To Send (S)CTS
&
13
14
%
Sec. Transmitted Data (S)TD
%
14
15
&
Transmitter Clock TC
&
15
16
&
Sec. Received Data (S)RD
&
16
17
&
Receiver Clock —
&
17
18 Unassigned 18
19
%
Sec. Request To Send (S)RTS
%
19
20
%
Data Terminal Ready DTR
%
20
21
&
Signal Quality Detect SQ
&
21
22
&
Ring Indicator RI
&
22
23
%
Data Rate Selector —
%
23
24
%
Ext. Transmitter Clock (TC)
%
24
25 Unassigned — 25
EIA RS-232-C Pin Assignments
To Next Page
Loading...
Need help?
General