3980xpi Users Manual - Data I/O Corporation

More About Cables
Setting Up
If you do not have one 25-pin RS-232C serial cable for each piece of
equipment you will connect to the programmer, you can use Figure 2-1 to build
your own cable.
When you connect equipment to a programmer, you must usually match Data
Terminal Equipment (DTE) to Data Communications Equipment (DCE). The
programmer is compatible with both types of equipment and automatically
configures the Terminal and Remote ports to be compatible with the
equipment connected to it. (The programmer's SmartPort feature toggles
between the two types until a connection is established.)
Figure 2-1. Pin Designations for RS-232C Serial Port Connection
25 PIN
9 PIN
PROGRAMMER (DTE)
MODEM (DCE)
8
DCD
1 DCD
TRANSMIT 2
DATA
2 RECEIVE
RECEIVE 3
DATA
3 TRANSMIT
20
DTR
4 DTR
7
SIGNAL GND
5 GND
6
DSR
6 DSR
4
RTS (HELD HIGH)
7 RTS
5
CTS
8 CTS
9-19 NC
NC
9
21-25
1
NC
NC
25 PIN
9 PIN
PROGRAMMER (DCE)
TERMINAL (DTE)
8
DCD
1 DCD
RECEIVE 2
DATA
2 TRANSMIT
TRANSMIT 3
DATA
3 RECEIVE
20
DTR
4 DTR
7
SIGNAL GND
5 GND
6
DSR
6 DSR
4
RTS (HELD HIGH)
7 RTS
5
CTS
8 CTS
9-19 NC
NC 9
21-25
1
NC
NC
25 PIN
PROGRAMMER (DTE)
1
PROTECTIVE GND
TRANSMIT 2
DATA
RECEIVE 3
DATA
4
RTS (HELD HIGH)
5
CTS
6
DSR
7
SIGNAL GND
8
DCD
3980xpi/3980/3900/2900 User Manual 2-9
9-19
20
21-25
9-19
20
21-25
NC
NC
DTR
25 PIN
PROGRAMMER (DCE)
1
PROTECTIVE GND
RECEIVE 2
DATA
TRANSMIT 3
DATA
4
RTS (HELD HIGH)
5
CTS
6
DSR
7
SIGNAL GND
8
DCD (HELD HIGH)
NC
DTR
NC
25 PIN
MODEM (DCE)
1
2
3
4
5
6
7
8
20
1
2
3
4
5
6
7
8
20
GND
RECEIVE
TRANSMIT
RTS
CTS
DSR
GND
DCD
DTR
25 PIN
TERMINAL (DTE)
The minimum hookup includes Pins 2, 3, and 7.
Pins 1 and 7 are tied together.
GND
TRANSMIT
RECEIVE
RTS
CTS
DSR
GND
DCD
DTR
1388-3