[time-nuts] TimeSource 2500

[Daniel H. Pressler]

Not sure it will help but my experience with TL1 is that the ; is the end of line character that will get you a response.  Worth a try if you haven't done it already.

-----Original Message-----
From: time-nuts [mailto:time-nuts-bounces at lists.febo.com] On Behalf Of Dmitry Khorkin
Sent: Wednesday, November 21, 2018 10:22 PM
To: time-nuts at lists.febo.com
Subject: Re: [time-nuts] TimeSource 2500

Hi,

Well, unit gives stable 10 MHz, so Rb oscillator seems to be alive.
Upon power up, sequence of TL1 messages(from Craft port) is "sensible" and
corresponds to what is to be expected, based on the manual. So controller
seems to be working.
Antenna sense circuit is also correctly determines presence/absence of the
load.
Overall, unit seems to be functional.

Regarding serial settings, i can read TL1 messages from Craft port, but
can't elicit any response when sending TL1 (or anything else) to it.
Bit rate is standard 9600, otherwise i receive gibberish from the Craft,
so, this seem to be correct.
Pinout for Craft port of TS2500 is (Tx, Rx, DSR, GND, DTR), i tried both
DRT/DSR hardware handshake and no handshake. For RS232 port tried null
cable, straight, RS232<->USB with RTS/CTS, DTR/DSR, no handshake.
Most work is done under Linux, so i attempted connection by 'cu' and
'screen' varying settings that make sense, also plain 'echo' while reading
using 'cat' in a separate terminal.
Results are the same whether i try to connect directly from PC or using
Moxa N5610 server in between.

TS3x00 series also uses BTmon for connection and judging from the manual
communicates using TL1 messages.
My guess, there is a wrapper around TL1 message, but i can't find any
hints. Or, there is some sort of software handshake upon connection.

Any help would be greatly appreciated!

Best regards,
Dmitry

On Thu, Nov 22, 2018 at 4:19 AM Bob kb8tq <kb8tq at n1k.org> wrote:

> Hi
>
> Do you have good reason to believe that it’s not DOA?
>
> It’s been a *long* time since these were common on the surplus market. I
> would not
> be real surprised to find that what’s floating around has been through
> several owners
> at this point.
>
> Bob
>
> > On Nov 21, 2018, at 6:05 PM, Dmitry Khorkin <ekaninchen at gmail.com>
> wrote:
> >
> > Recently i purchased Symmetricom's Timesource 2500  PRS, but can't find a
> > way to communicate with it.
> > Tried both straight and null-cables, RS232 and Craft interfaces but to no
> > vail. There is no reply no matter what i send.
> >
> > The only thing I was able to achieve is reading TL1 messages comming from
> > the Craft port.
> >
> > Can someone please share a copy of BTMon software or advise how else one
> > can communicate with the device. Maybe description of the protocol, or
> > structure of the message it expects.
> >
> > Thanks in advance!
> >
> > Best regards,
> > Dmitry
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