Celestron Compustar Manual de instrucciones descargar pdf (Pagina 17)

Figure 9. The front edge of the Compustar computer module showing its three female DB-9

ports. Each port receives 9 pins. The right port is for an optional joystick, the left port is

for output to a printer. The center DB-9 port is the guide port for autoguiding input.

Figure 10. A computer cable with a male DB-9 connector plug. The connector is D-shaped

and has 9 pins.

We have to know which wires on the RJ-11 cable go to which pins on the DB-9 plug. But when

it comes to making a connection between an autoguiding computer and the Compustar computer

module, there is another extremely important issue, and that is the issue of electrical isolation.

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Celestron Compustar Manual de instrucciones Pagina 17