Celestron Compustar Instrukcja Obsługi Pobierz pdf (Strona 25)

Figure 15. The modified wiring diagram for the relay interface between the RJ-11 cable

from the autoguiding computer to the DB-9 connector for the guide port on the Compustar

computer module, using the ST-4 language. The left side of the diagram shows wiring for

an optional joystick to be connected to the joystick port on the right side of the Compustar

computer module.

Parts List for the Compustar Autoguiding Relay Interface Box

Quantity Part

1 RJ-11 cable with modular jacks

1 Plastic electrical container box

4 Radio Shack 275-241A 5V relay switches (275-240A relays also work)

2 1k ohm potentiometers

1 Small circuit board, cut to fit in the box

1 DB-9 cable with male connector pins

The parts list generally goes in order of the diagram, reading from right to left, with the wiring,

relays, and potentiometers inside the plastic electrical container box. The RJ-11 cable will be

connected with one of its jacks into the output connector from the autoguiding computer and

receive commands for moving the mount in the four directions as indicated on the RJ-11

wiring diagram shown above. The RJ-11 cable pin out is shown on the right side of the wiring

diagram. (The reader can ignore the labeling of the pin outs for the ST-V and ST-7,8, or 9,

1 2 ... 20 21 22 23 24 25 26 27 28 29 30 ... 47 48

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Celestron Compustar Instrukcja Obsługi Strona 25