RGB Spectrum DGy 201x Benutzerhandbuch

. . . . .

To connect directly from a PC (such as a laptop) to the DGy 201x 
without connecting to the network, an Ethernet crossover cable must be 
used. Crossover cables are available commercially.

In a crossover cable, one end of the cable is wired as a straight through 
cable, using the pin assignments shown in 

. At the other end 

of the cable, the TX and RX interconnections are exchanged (crossed 
over).

Ethernet uses balanced differential signals on twisted pairs of 
conductors. It is important to use wires from the same pair for each pair 
of signals. The standard pairs are shown in 

. Note that one 

wire of the pair has a solid color. The other wire (of the pair) is white with 
a stripe of the same color as the other wire (e.g., Orange and 
White/Orange).

. . . . . . . . . 

The RS-232 port is configured according to the Electronic Industries 
Association Standard RS-232-C published in August 1969. The DGy 
201x can be explicitly controlled with ASCII Command Set instructions 
sent via the RS-232 serial port from either a computer or an ASCII 
terminal. Refer to 

, for details on all commands.

Physically, the RS-232 port is a 9-pin, D-Sub female connector. The pins 
for the RS-232 connector are numbered from top to bottom, right to left. 
Looking at the connector, pin #1 is located in the upper right corner, and 
pin #9 is in the lower left corner.

The 9-pin D-Sub connector has the following signals: 

1

CD

Carrier Detect

2

TD

Transmit Data

3

RD

Received Data

4

(not connected)

5

AB

Signal Ground (common return)