RS232 Cable Information

RS232 Cable Information

The cable adapters allow you to connect DCE (Data Communication End, for example – modem)
to DTE (Data Terminal End, for example – PC) devices in order to communicate between them.


 DB-9 to DB-25 RS232 Serial Port Adapter Cable


 NULL MODEM ADAPTERS
Null modem adapters allow you to connect two computers in the same room by means of common (no crossed data lines) RS232 serial port cable to transfer data between them.

1) DB-25 Female to DB-25 Female Serial Port Interface Adapter

2) DB-9 Female to DB-9 Female Serial Port Interface Adapter


 NULL MODEM ADAPTER CABLES
This cables allows to transfer data between two computers in the same room. The cables have crossed data lines!
 Only connect the computers when they are turned off! An additional connection the both PC-grounds by separate wire is good insurance. There is always a danger of the destruction of the port by static electricity. Therefore please touch the PC case before conecting the cable.

1) DB-9 or DB-25 (Females) Serial Port Adapter Cables
Computer 1 (Master) Computer 2 (Slave)
DB-9F DB-25F DB-25F DB-9F
5 7 <—> 7 5
2 2 <—> 3 2
7 4 <—> 5 8
6 6 <—> 20 4
3 3 <—> 2 3
8 5 <—> 4 7
4 20 <—> 6 6
2) Parallel Port Interface Cable
DB-25 Male 10m max. DB-25 Male
2 <—> 15
3 <—> 13
4 <—> 12
5 <—> 10
6 <—> 11
15 <—> 2
13 <—> 3
12 <—> 4
10 <—> 5
11 <—> 6
25 <—> 25

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