LX200 RS232 Diagnosis

[@SmittyInTheSky]

Nice video. Thanks.

[@astalavistatomi]

Very helpful, Thank You very much. I use it on diametral ac source but I have problem with MAX232CPE too

[@clearlinetechnologycorp.5974]

Glad it helped

[@mosesmcrae]

Is there a video yet for rs232 chip replacement?

[@clearlinetechnologycorp.5974]

Not from us yet. But it would be a straight IC - replacement similar to the L2724 replacement in that video.

[@robertoventurelli7602]

Ciao e complimenti per il video davvero interessante. Ho notato però che nel manuale LX200 classic, il pinout del Panel Control Telescop RS232 J11 è diverso rispetto a quello rappresentato nel video. Ovvero il ground si sposta sul PIN 2 da destra verso sinistra (attuale colore GIALLO), il segnale TX VERDE si sposta sul pin 4 , il segnale RX si sposta sul BIANCO PIN 5 sempre da destra verso sinistra. In sostanza, la numerazione sul Manuale inizia sul PIN1 da destra verso sinistra, anziche da sinistra verso destra del video. E' così? Grazie mille

[@clearlinetechnologycorp.5974]

The diagram in the manual is confusing. Looking into the female RS232 connector on the front panel, left-to-right, you have +V, GND, LX200 TX1, LX200 TX2, LX200 RX1, LX200 RX2.

[@clearlinetechnologycorp.5974]

@@robertoventurelli7602 I'm sorry, but I am not familiar with the ASIair, nor your cable, so I can not advise you.

[@StompAE86]

Hey mate I am battling an old LX200 10 inch I just picked up and having no luck, what is the software you used to get it moving? I have tried writing the BASIC code but I am no programmer. Any help would be much appreciated. Cheers

[@clearlinetechnologycorp.5974]

It's our own test software, but you should be able to use most planetarium programs like Sky Safari or Stellarium. They talk to the LX200.

[@StompAE86]

@clearlinetechnologycorp.5974 thanks for your reply i have tried stellarium and can not get it to connect at all. Usung some random software to send commands and bridging pin 2+3 on the cable shows the cable works as i can send and receive back what i sent but scope doesent do anything. I am usibg a converter too so might try to find an ancient pc with a rs232 port. I will try to find an oscilloscope and follow your guide too. Cheers

[@clearlinetechnologycorp.5974]

@@StompAE86 Make sure your converter outputs actual RS232-level signals to the telescope, they are not the same as 5v logic levels. The loopback test will not uncover this.

[@SmittyInTheSky]

I have an issue where when I simply plug in my AC adapter, I get noise on my serial lines. Telescope isn't even powered on. I also do not see that I have rs232 signals on the wires coming from the telescope. Everything else seems to be working fine. AC adapter is plugged into a line conditioner. No noise visible on DC 18v at that point.