Re: [time-nuts] RS232 output on a 53181A

Hi, Also, since it's a p rather than any other character, my guess is that it probably was deliberate - although whether it was meant to be shipped like that is another question. Angus. On Wed, 12 Jul 2017 11:56:24 -0400, you wrote: >Well ASCII * is 2a in Hex, p is 70 so that seems an

Re: [time-nuts] RS232 output on a 53181A

Hi There may well be multiple EEROM’s in the 53181 and 5313x counters. At least when I have blown up the EEPROM in them, it comes back with a error. I haven’t blown any up since the early 1980’s so I don’t quite remember the exact error message involved. Had it simply failed silently, I would

Re: [time-nuts] RS232 output on a 53181A

Well ASCII * is 2a in Hex, p is 70 so that seems an unlikely substitution for a failing EPROM. But 0 is 30 Hex, only one bit different from p. On Wed, Jul 12, 2017 at 10:39 AM, Angus wrote: > Hi, > > I've just been using an Agilent 53181A, but the serial output is not

[time-nuts] RS232 output on a 53181A

Hi, I've just been using an Agilent 53181A, but the serial output is not quite what I had expected. On the 53131A's that I've used the placeholder character on the RS232 output is an asterisk, but with this unit it is a lower case 'p'. Where the 53131A sends '2,*** u', this 53181A send '2,ppp u'.

Re: [time-nuts] RS232 / GPS interface/prototyping board

On Wed, Jun 22, 2016 at 3:14 PM, Nick Sayer via time-nuts < time-nuts@febo.com> wrote: > > > On Jun 22, 2016, at 1:33 PM, Mark Sims wrote: > > > > The value, quality, and turn-around from all these places is amazing. > In the olden days, one was paying $50 a square inch for

Re: [time-nuts] RS232 / GPS interface/prototyping board

Hi There are an ever increasing number of places that will do pretty good quick turn boards. The fact that you can get 4 layer 10x10 cm boards with 4/4 mil rules / 8 mil holes for < $20 each delivered in under two weeks amazes me.Yes that’s a 10 piece price. Yes it includes framed steel

Re: [time-nuts] RS232 / GPS interface/prototyping board

Life is so much easier now, dirtypcb is a great service, I have a pile of boards here from them which are far greater quality than anything I could hope to produce at home or even in the lab I used to have. They're also better quality than any of the local board houses I used in the past.

Re: [time-nuts] RS232 / GPS interface/prototyping board

> On Jun 22, 2016, at 1:33 PM, Mark Sims wrote: > > The value, quality, and turn-around from all these places is amazing. In > the olden days, one was paying $50 a square inch for a single prototype board > with 4 week turn-around. > Not to turn this into the “Four

[time-nuts] RS232 / GPS interface/prototyping board

Yes, I always do a cost/benefit check when ordering boards. For small boards (say less than 4-6 sq inches) when I need three or less, OSHPARK is pretty much always the way to go. For larger boards / quantities, Dirty PCBs (or gojgo.com) come out ahead... even with DHL express shipping.

Re: [time-nuts] RS232 / GPS interface/prototyping board

This may be too far off-topic, but I’ve used both Dirty and OSHPark. For U.S. based folks, Dirty sounds like a better value proposition than OSH, but for most of us, it doesn’t really work that way: 1. If you are building one thing, getting 10 vs 3 boards doesn’t add value. 2. To actually get

[time-nuts] RS232 / GPS interface/prototyping board

I also put my RS-232 / GPS interface board on Dirty PCBs... again you get 10 or so boards for $25. http://dirtypcbs.com/view.php?share=22495=295e19bd6cd8f6cc2f421761743cb695 ___ time-nuts mailing list --

Re: [time-nuts] RS232 / GPS interface/prototyping board

Yo Attila! First, my apologes for getting this thread started. I misunderstood Mark's design to have USB, when in fact it did not. Late night brain fart. So any USB discussion is unrelated to his work. On Tue, 14 Jun 2016 21:49:17 +0200 Attila Kinali wrote: > Of the

Re: [time-nuts] RS232 / GPS interface/prototyping board

On Tue, 14 Jun 2016 18:39:35 +0200 Herbert Poetzl wrote: > > I am not aware of any USB 2 UART devices (that doesn’t > > necessarily mean much). They just don’t need to be that fast. > > All modern FTDIs are USB 2.0 (for example the FT232R, > FT2232H and FT4232H) because

Re: [time-nuts] RS232 / GPS interface/prototyping board

On Tue, Jun 14, 2016 at 07:19:54AM -0700, Nick Sayer via time-nuts wrote: > That’s not a USB chip, it’s an RS-232 level converter. > I am not aware of any USB 2 UART devices (that doesn’t > necessarily mean much). They just don’t need to be that fast. All modern FTDIs are USB 2.0 (for example

Re: [time-nuts] RS232 / GPS interface/prototyping board

That’s not a USB chip, it’s an RS-232 level converter. I am not aware of any USB 2 UART devices (that doesn’t necessarily mean much). They just don’t need to be that fast. > On Jun 13, 2016, at 11:53 PM, Gary E. Miller wrote: > > Yo Mark! > > On Tue, 14 Jun 2016 00:53:10

[time-nuts] RS232 / GPS interface/prototyping board

No USB on that board. It is genuine hardware RS-232 via a DB9 connector. No USB latency if your hardware supports it. It does route the the PPS to the connector at RS-232 levels so you do have a propagation delay through the level shifters. I tend to use real RS-232 interfaces instead of

Re: [time-nuts] RS232 / GPS interface/prototyping board

Yo Mark! On Tue, 14 Jun 2016 00:53:10 + Mark Sims wrote: > The 1PPS signal is > routed to the RS-232 connector via the MAX232A, Why did you use a USB 1.1 chip instead of a USB 2.0 chip? The PPS performance is much better with the Hi Speed chips. RGDS GARY

[time-nuts] RS232 / GPS interface/prototyping board

I have put my RS232 adapter board for GPS modules up on OSHPARK's shared projects page. https://oshpark.com/shared_projects/YPvKgMYa It has connectors and holes for the Adafruit Ultimate GPS, Trimble Resolution T timing receivers, and generic (Vcc/Gnd/Tx/Rx) devices (like the popular Ublox

[time-nuts] RS232 Cable for SR620 use with TimeLab

Thanks to another TN member (Matthias Jelen) the necessary RS232 cable pin connections to connect the SR620 to TimeLab have been determined: DB9 (PC) - DB25 (SR-620) 1 - 8; 2 - 3; 3 - 2; 4 - 20; 5 - 7; 6 - 6; 7 - 4; 8 - 5 Further, it turns out that there is/was a commercially

Re: [time-nuts] RS232 cables - thin connectors

wd6...@gmail.com said: Maybe low-profile rs232? Something like: http://www.cablestogo.com/product/52138 Neat. Thanks. I think that's referring to a different dimension. I'm interesting in the thickness of the connector. If you measure a typical connector, it's 0.65 thick 1.3 wide,

[time-nuts] rs232

Ok, if you don't like RS232: http://ics.nxp.com/support/documents/interface/pdf/UFm-I2C-Gaming.pdf Don -- Neither the voice of authority nor the weight of reason and argument are as significant as experiment, for thence comes quiet to the mind. De Erroribus Medicorum, R. Bacon, 13th century.

[time-nuts] RS232 488 GPIB controller update Sucess

Hello to the group. I sent a thread a few days ago about the traditional IOtech, Black box, and NI stand alone rs 232-GPIB 488 converters. Here is the whole story. They can all made to be full controllers. Very simply by changing a 27c64 eprom. There was some confusion. The Iotech 488/ex is a