[time-nuts] Re: VT100 Terminal: Symmetricom TimeSource 3500

[Mahlon Haunschild]

If you have the cable shield (not signal ground) connected at both ends, cut one end.

Best regards

Mahlon - N4ZK

> On Nov 12, 2024, at 12:05 AM, Joe Dempster via time-nuts <time-nuts at lists.febo.com> wrote:
> 
> Try switching the RX/TX (2 and 3 pins) order.
> 
> Joe Dempster
> +1 908 413 2889 (m)
> 
> 
>> On Mon, Nov 11, 2024 at 14:18 Adam Kuzych via time-nuts <
>> time-nuts at lists.febo.com> wrote:
>> 
>> I have a Symmetricom TimeSource 3500 of unknown origin that appears to boot
>> correctly, by LED action, and operates the Rb 10MHz output, but is perhaps
>> undisciplined by GPS.
>> 
>> I've read through the manual extensively, and have copied the craft port
>> pinout to the working serial port on an ancient Windows XP computer running
>> Hyperterminal VT100, 9600 8N1.
>> 
>> I've tried adding an unnecessary null, and tried access as well to the
>> DB-25 rear serial connector, null in and out there too, without success. No
>> joy in PuTTY on a modern PC either.
>> 
>> I've done plenty of terminal into other obsolete gear of this era, and
>> never had these problems with this much effort. Could someone reach me who
>> has had success on this model series?
>> 
>> Opening it up, there doesn't appear to be any factory reset switch or any
>> memory battery to pull here.
>> 
>> I may be able to try something Wireshark to the ethernet port, but I don't
>> think they intended that access for control on this model.
>> 
>> 
>> 
>> Adam VE6WMR
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