Intermec EasyCoder 3400e User Manual page 105

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EasyCoder 3400e Bar Code Label Printer User's Manual
39
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9-Pin (Socket) D-Sub
Metal Backshell
Received Data
2
Transmitted Data 3
Clear to Send
8
Request to Send 7
Data Terminal Ready
4
Data Set Ready 6
Carrier Detect 1
Ground 5
PC
RS-232 for PC/AT: This illustration shows the pin assignments for the RS-232 null
modem cable for PC/AT (P/N 048693).
Note: The metal backshell is connected directly to the shield to achieve
electrostatic discharge (ESD) immunity.
25-Pin (Socket) D-Sub
Metal Backshell
Chassis Ground
Transmitted Data
Received Data
Request to Send
Clear to Send
Data Terminal Ready
20
Signal Ground
Printer
Straight through DTE to DCE cable: This illustration shows the pin assignments for
the straight through DTE to DCE cable used with a modem (P/N 043237S). If you find
that you are losing data, you may need to isolate the chassis ground from one of the
two devices by connecting it to the shield.
Note: The metal backshell is connected directly to the shield to achieve
electrostatic discharge (ESD) immunity.
Appendix C — Communications Reference
Shield
3XXXU011.eps
Shield
1
➤
2
➤
3
➤
4
➤
5
➤
7
25-Pin (Plug) D-Sub
Metal Backshell
1 Chassis Ground
Transmitted Data
2
3 Received Data
Carrier Detect
8
Data Set Ready
6
20 Data Terminal Ready
5 Clear to Send
4 Request to Send
7 Ground
Printer
25-Pin (Plug) D-Sub
Metal Backshell
Chassis Ground
1
Transmitted Data
2
Received Data
3
Request to Send
4
5
Clear to Send
20 Data Terminal Ready
7 Signal Ground
Modem
3XXXU012.eps
93