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Is this 9 pin cable a straight wired one to one or do various wires cross, ie TD to RD, CTS to RTS, etc?  I have acess to several types at work to choose from.  Not clear from page 132 of Barry's book (although the term "keyboard extension" strongly suggests one to one).

 

As you can guess I am going to give this downloading a try.  Worst that can happen is a braindead unit that has to be sent to MTH for resucitation. 

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Sam,

 

FWIW, I used a standard 1:1 serial cable to the same Vantec serial adapter that I use for updating my Legacy base, and...  it didn't work!  Don't know if the MTH drivers didn't like my serial adapter, or the cable.

 

I was fortunate that I have the Rev. L TIU models and so I could use the USB cable for updates, which worked fine.  Of course, I had to move the TIU to the computer for the update, so from now on I use my laptop for any TIU or DCS engine updates.

 

There is obviously more to the serial interface that a simple 1:1 cable, which I already have.  In case the peanut gallery suggests the cable was simply defective, I actually tried three different serial cables and even rang one of them out with a meter to verify it's connections.  I'm guessing some compatibly issue with the serial-USB connector is the issue with my environment.

Thank you John and Marty.

 

Having been in telecommunication and designed some boxes with RS232 connectors, there is a who pascal of different type cables from straight one to one to cables with connector wires criss-crossed to otheres to thers looped back within a connector (null modem) etc.  So when Barry referenced keyboard extension that is one to one, but RS232 is a whole another issue requiring knowledge of what each end (data set and terminal/computer) requires for signals.  Some devices work perfectly well on three wires (transmit, receive and ground), while others require the whole set of signalling wires on the right pins to get operational.  Unfortunately, MTh doesn't make clear exactly what they want that I can find on website (maybe on "hidden" page).

 

Barry, apology accepted.

 

Sam,

apology accepted.

Thank you.

 ...keyboard extension that is one to one, but RS232 is a whole another issue requiring knowledge of what each end (data set and terminal/computer) requires for signals.

I agree that RS232, as a protocol, is specified as regards which pins perform what specific functions. However, every standard 9-pin RS232/RS232C/modem cable/keyboard extension cable have all 9 wires connected straight through, end-to-end.

 

Again, it's the RS232 protocol that states which wires are used for what purpose. The wire itself is always a straight through connection on all 9 pins.

 

All of the above cables may be used interchangeably for any of their intended functions. The one cable that is different although it looks the same is the null modem cable, which crosses receive and send.

 

Rather than possibly confuse those reader of my book with unnecessary technical specifications, I simply applied generic names for cables that are readily available for purchase, under those names.

 

However, this does run the risk of causing more technically astute readers, such as yourself, to perhaps read too much into my writing.  

Well this does not bode well. When I went to the MTH protosound2 site and clicked on download the 2.3 loader or 4.2 programs I got a screen with

 

"Content was blocked because it was not signed by a valid security certificate."

 

Nothing more was displayed to explain what I had to do next except read Explorer explanations.

 

Guess MTH forgot to pay the securiey bill !  :-P

 

On bright side, I know my machine is 32 bit and has Net3.5 running!!

Last edited by rrman

Sam,

"Content was blocked because it was not signed by a valid security certificate."

You need to use a different browser.

 

I use Safari on a Mac and simply get a warning that the certificate has expired with the option to continue. If you're on a PC, just dump IE altogether and use almost anything else. I suggest Chrome.

 

Eventually, MTH wil get the new site fully operational. In the mean time, most browsers, except for IE, have workarounds for the certificate issue.

Thanks Barry. 

Googled this error message and basically found out that its a bug in IE 8 and 9.  Somebody posted a 20 step reply to work around this.  Gee, why does Uncle Bill Gates have to be so difficult.....

 

So I will use my wife's computer running firefox and hope I can get the file. And If that doesn't work, maybe someone can e-mail the files.

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