[time-nuts] rs-422 rs-232 to fast ethernet converter

Bob Camp kb8tq at n1k.org
Sat Nov 22 19:45:58 EST 2014


If you go the auction site route, be careful of the boxes that have a password on them that can not easily be reset. Back when they were new, a trip back to the factory would reset the password. These days - no more support on the older boxes. The same caution applies to some of the older Cisco boxes. 

Most times, a quick look at the manual will bring up a warning if it’s a a box with a “forever” password.

That said, these are really boring boxes to watch. Once they are set up, they loose their “see what it’s doing” appeal pretty fast. The exception to that might be the status lights. I’d bet the as yet un-traced out opto isolator outputs would help with a remote alarm of some sort. 


> On Nov 22, 2014, at 6:25 PM, Brent Gordon <time-nuts at adobe-labs.com> wrote:
> I haven't used this particular model.  I have used similar units from Systech, purchased on eBay for less than $30 US.  They work quite well.  Some of them have selectable RS-232/RS-485 outputs.  I've successfully used both types of outputs.
> The only problem I've had was the initial configuration.  The trick is to configure the serial ports as a "Reverse Telnet" server.
> Search eBay for "terminal server".  You can also search the Time Nuts list, they were discussed a few years ago.
> Brent
> On 11/22/2014 3:47 PM, Graham wrote:
>> I have been contemplating how I will would like to interface to the
>> KS-23461 devices using rs-422.
>> One option is a rs-422 to USB cable. Seems easy enough.
>> But another option I keep stumbling across is a rs-422/rs-232 to fast
>> ethernet such as:
>> http://www.transition.com/TransitionNetworks/Products2/Family.aspx?Name=SDSFE3110-120
>> Frankly, I have no first hand knowledge or experience with these
>> devices. First glance suggests that it might just be what I want - easy
>> access to the KS-23461 ports through a connection to my local network
>> without having a PC of some sort close by.
>> So, any first hand experience with such devices? Good idea or bad?
>> cheers, Graham ve3gtc
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