[GreenKeys] ASR33

[Bryan Brodie]

I'm a software guy, not a hardware guy. This worked for me when
connecting an ASR35 to the RS-232 serial port on a Dell Server that I
use to emulate an obsolete HP2000 minicomputer time sharing OS.

http://www.telebyteusa.com/catalog/products/65a.htm

Not cheap by any means, but it works! Nothing blew up yet...

Bryan Brodie

> ---------- Forwarded message ----------
> From: Don Robert House <k9tty at dls.net>
> To: B M <iamvirtual at gmail.com>
> Date: Fri, 18 Sep 2009 23:29:13 -0500
> Subject: Re: [GreenKeys] ASR33
> You need to contact someone else who has already done what you are attempting.
> I no longer have any of the Classic Computer guys in my email address book.
>
> I will copy a couple of men who might be able to steer you.
>
> Guessing is not the best solution.  The smoke is hard to get back into the unit.
>
> Don
> K9TTY
>
>
> On 18 Sep 2009, at 6:49 PM, B M wrote:
>
> Is the ASR33 capable of generating voltage/current spikes via the 20mA
> connection?  I realize the connection is passive, but what exactly is
> the 20mA connection driving? Should I be concerned about connecting
> the ASR33 directly to my old PDP-11's?  I am more concerned about
> ensuring the PDP-11 will be ok and not as concerned if something bad
> happens to the ASR33 since the TTY is much easier to fix/replace :-)
>
> Is there any tests I could perform before hooking the TTY to my computer?
>
> Many thanks for any information.
>
> --barrym