Lakeshore 211 - Figure 5-3. RS-232 (DTE) Connector

Lake Shore Model 211 User’s Manual
Service 5-
5
Connector Definitions (Continued)
DE-9
Serial Connector.bmp
Model 211 Temperature Monitor
Typical Computers
DE-9P (DTE)
DB-25P (DTE)
DE-9P (DTE)
Pin
Description
Pin
Description
Pin
Description
1
No Connection
2
TD (out)
1
DCD (in)
2
Receive Data (RD in)
3
RD (in)
2
RD (in)
3
Transmit Data (TD out)
4
RTS (out)
3
TD (out)
4
Data Terminal Ready
(DTR out)
5
CTS (in)
4
DTR (out)
5
Ground (GND)
6
DSR (in)
5
GND
6
No Connection
7
GND
6
DSR (in)
7
Data Terminal Ready
(DTR out) (tied to 4)
8
DCD (in)
7
RTS (out)
8
No Connection
20
DTR (out)
8
CTS (in)
9
No Connection
22
Ring in (in)
9
Ring in (in)
Figure 5-3. RS-232 (DTE) Connector