[time-nuts] Re: Manual for Precision Standard Time PST-1030 WWV Receiver?

[Walt]

Yes, I've been using MobaXterm and RealTerm for Windows to attempt to communicate with the PST-1030.

Your statement that both boxes are not likely to be bad made me revisit the problem with a fresh, optimistic outlook.  The PST-1030 was connected to my PC using a 9-pin FTDI USB-to-RS-232 Converter and a 9F-to-25M null modem cable.  The serial port was set to 9600, 8 bits, no parity. In RealTerm, flow control was set to None.  This time, DCD, DTR and RTS were high.  It never did that before, so this was encouraging.

The dip switch settings are documented in the attached psti.pdf.  It is a scan of Chapter 2 of the user manual, which the late Dr Mills put on his website at Udel, and is still there under the Resources section.

Now his NTP driver docs mentioned a QTQDQM command, which I needed to try.  According to the following page, the PST does not emit timecode data continuously; it must be polled.

https://www.ntp.org/documentation/drivers/driver3/

So I typed QTQDQM into RealTerm and got the first response ever!  See the attached image.  That's the output from QT (time), QD (date), QM (settings and status), and Q?, the only other character pair that produces results.

Chapter 5 of the user manual has more commands, fine-tuning propagation delay correction, for example. That's one reason I'm looking for it.

Walt

-----Original Message-----
From: JOHN HARTZELL via time-nuts <time-nuts at lists.febo.com> 
Sent: Thursday, March 7, 2024 2:23 AM
To: Discussion of precise time and frequency measurement <time-nuts at lists.febo.com>
Cc: Walt <walt at drizzle.com>; JOHN HARTZELL <johnhartzell at icloud.com>
Subject: [time-nuts] Re: Manual for Precision Standard Time PST-1030 WWV Receiver?

Hiya Walt,

Have you tried using a “terminal” program?  Unlikely that both boxes are bad.  Most likely is selecting the correct baud rate.

Kind regards,

John

https://linkedin.com/in/john-h-6a131b12/




> On Mar 7, 2024, at 4:26 AM, Walt via time-nuts <time-nuts at lists.febo.com> wrote:
> 
> Five months ago I acquired a pair of Precision Standard Time Inc 
> PST-1030 WWV receivers.  Their inventory labels show they were 
> procured by Lockheed Martin Space Systems in 1989, and the internal 
> components have a 1988 date code.  They function flawlessly, except 
> that I can't get any output at all from the serial ports.  The MAX232 
> receiver/driver doesn't appear to have anything going into the inputs.  
> It seems that whatever caused the serial port to fail, has happened to both of them.
> 
> 
> 
> The upper unit is set to my local TZ (GMT-8) in 12-hour format, and 
> the lower unit is set to GMT and 24-hour format.  They take 2-3 
> minutes to acquire the time and date.
> 
> 
> 
> They handle DST and leap years without any problems.  Leap years are 
> implemented by using 4 dip switches to set the year from 1986 to 2001.  
> The years wrap around, mod 16, so for 2024, you merely set it to 1992.
> 
> 
> 
> Does anyone have a copy of the 70-page manual?  I've worn out 
> archive.org looking for it, and so am hoping someone out there can 
> help.  I also wouldn't mind hearing from other PST-1010/1020/1030 
> owners, especially with regards to the operation of the serial port.
> 
> 
> 
> Walt
> 
> 
> 
> 
> 
> 
> 
> <PST-1030.jpg>
> <1030.pdf>
> _______________________________________________
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