Re: [time-nuts] OT - Need a German speaker

2014-05-18 Thread Chris Albertson
two things YOU can try: 1) Go to google translate https://translate.google.com/ and type in the URL of the German web page. It will translate the site to English for you, or 2) Use Goolge's Chrome web browser and it will automatically translate non-English sites for you. Neither are perfect

Re: [time-nuts] PIC Programmer for Piklab in Linux?

2014-05-18 Thread Rudolf Bodocsi
On 15/05/14 00:15, Bob Stewart wrote: Can anyone suggest a PIC programmer that will work with Piklab on Linux? The replacement serial board I just bought won't drive my JDM Classic PIC programmer. It doesn't reliably drive my LIRC IR transmitter either, so I have to devote the serial port

Re: [time-nuts] OT - Need a German speaker

2014-05-18 Thread cfo
Are there any German speakers who live in the USA on this list? I need someone to order me a small kit from a German web site. I'll pay you up front to order this for me. http://www.box73.de/product_info.php?products_id=945 It is a speech compressor kit that plugs into the mic of an

Re: [time-nuts] OT - Need a German speaker

2014-05-18 Thread EWKehren
Joe I am German living in the US. The site does ship to the US and once the product is available middle June If necessary I will be glad to help. How ever we have time nuts living in Germany and some probably have bought from this site. They can log in and find out what then payment options

[time-nuts] Software Defined MSF and DCF Receiver

2014-05-18 Thread Iain Young
Hi Folks, While not exactly nanosecond class, I thought at least some of you might be interested in my latest experiments with writing a MSF and DCF decoder in SDR (gnuradio in this case) The gnuradio flowgraph is shown here: http://hal.g7iii.net/GRC/Radio_Clocks/Multi_Radio_Clock_Receiver.png

Re: [time-nuts] iTrax130

2014-05-18 Thread Jason Rabel
Just got this board from a Chinese ebayer, but unable to find any document about the pin-assignment. One of the ebay sellers had some PDF links, but also said it is the same pinout as a Trimble Resolution T. It seems to fit the same shape and header location... But be cautious... If you

Re: [time-nuts] OT - Need a German speaker

2014-05-18 Thread Götz Romahn
hi, I am living in Berlin, Germany. http://www.box73.de/ do provide a really reliable service. Give me a note if you need help. Götz ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to

Re: [time-nuts] Software Defined MSF and DCF Receiver

2014-05-18 Thread Bob Camp
Hi One thing to be careful with when running VLF into NTP - make sure you work out the propagation delay to your site and put it into the driver. As your data shows, the jitter is low enough to make it worth doing. We get so used to GPS (that corrects automatically) that we forget about doing

Re: [time-nuts] OT - Need a German speaker

2014-05-18 Thread Arnold Tibus
Hello Joe, I see that Bert and cfo (don't know his name, sorry) gave you already good informations. I have an account there and a continuous order for the magazine. It is easy as already mentioned to register with the personal email address and invent a password. For the international payment

Re: [time-nuts] OT - Need a German speaker

2014-05-18 Thread Arnold Tibus
Addendum to my previous mail: their *Payment Options* http://www.box73.de/shop_content.php?coID=13 (english page): http://www.box73.de/shop_content.php?coID=13 *Shipping Costs* http://www.box73.de/shop_content.php?coID=14: http://www.box73.de/shop_content.php?coID=14 I hope this will help, 73

Re: [time-nuts] PIC Programmer for Piklab in Linux?

2014-05-18 Thread Bob Stewart
Hi Rudolf, The Pickit2 configuration choices were a bit confusing, so I decided to order a different serial board that contains actual 16550s. Now that I've had a chance to assimilate what I've learned, the problem is traced to the 3 Volt 3243 chips that are in today's serial boards.  After

Re: [time-nuts] iTrax130

2014-05-18 Thread Chris Albertson
What a find. I tracked down the docs. It will do NMEA and has 20ns RMS time error. Looking at the photo I can trace the header pins visually. The traces seem to be all on one side. The linked doc give the pinouts for the chip. I'm thinking I want one of these too $12 with free shipping is

Re: [time-nuts] OT - Need a German speaker

2014-05-18 Thread Joseph Gray
Thanks to all who replied. It seems that the item is not available yet. When it is, I'll contact one of the members who offered to help. Again, thanks. Joe Gray W5JG On Sat, May 17, 2014 at 9:27 PM, Joseph Gray jg...@zianet.com wrote: Are there any German speakers who live in the USA on this

[time-nuts] Can (will) a M12+T generate a negative sawtooth message ?

2014-05-18 Thread cfo
I have 2 x M12+T , and a DS1023-100 Dallas chip. I'm going to use the DS1023 to make sawtooth correction , but the DS is a bit unclear. http://datasheets.maximintegrated.com/en/ds/DS1023.pdf 1: What is the REF output used for ? As i read it it shows the internal delay through the chip. And can

Re: [time-nuts] iTrax130

2014-05-18 Thread Hal Murray
We'd have to guess the correct binary command to pt it into NMEA mode One quick approach is to let gpsd try. It's very good at figuring out what sort of device you have. I normally use gpsmon. By default, it doesn't send anything, just listens while searching baud rates. The i

Re: [time-nuts] Can (will) a M12+T generate a negative sawtooth message ?

2014-05-18 Thread Hal Murray
The ref output is the minimal delay through the chip covering the input and output pad buffers. It will vary slightly with temperature and voltage. There are no negative delays in that sort of chip. It's just a bunch of gates/buffers with a carefully calibrated delay. (For a negative delay,

Re: [time-nuts] Can (will) a M12+T generate a negative sawtooth message ?

2014-05-18 Thread Bob Camp
Hi The DS1023 will not do negative delays. Physics people would be very interested in it if it did. You will need to add a nominal delay of 1/2 the max DS1023 delay to the data coming out of the M12. Also pay careful attention to which PPS the message applies to (the most recent one or the

Re: [time-nuts] Can (will) a M12+T generate a negative sawtooth message ?

2014-05-18 Thread Chris Albertson
from page 167 of user 09feb05 version of user manual: It is an 8-bit value n where n = negative sawtooth time error of next pulse The value of N ranges from -128 to +127. I think(?) it is really a value from 0 to 255 and you must apply a bias to get the -128 to +127 range. And again this is a

Re: [time-nuts] Can (will) a M12+T generate a negative sawtooth message ?

2014-05-18 Thread Azelio Boriani
As you can tell from the manual, the M12+ and the M12M will output a signed -128..+127ns correction from the @@Hn message. In my opinion you have to start from a fixed delay (an offset) in order to apply the negative correction. I already have the Dallas/Maxim delay line but still not used it. On

Re: [time-nuts] Can (will) a M12+T generate a negative sawtooth message ?

2014-05-18 Thread Tom Van Baak (lab)
On May 18, 2014, at 3:14 PM, Chris Albertson albertson.ch...@gmail.com wrote: I think(?) it is really a value from 0 to 255 and you must apply a Chris, The manual clearly states -128 to +127. What's your problem with that? /tvb ___ time-nuts

[time-nuts] English To German Email Translation for free

2014-05-18 Thread Bob Burchett
I have a friend who speaks fluent German; send me an email of what you want to say BUT you should know that when I need any language of text I use this website: http://www.freetranslation.com/en/translate-english-german They do most any language but this one is for English to German. Robert L.

Re: [time-nuts] Can (will) a M12+T generate a negative sawtooth message ?

2014-05-18 Thread Tom Van Baak (lab)
Hal, Yes, there are negative delays. The goal is that the physical 1PPS output is, on average, exactly on-time. If designed right, that means as many negative offset pulses occur as positive offset pulses. The spread gives you the RMS value. This is exactly what you want for a GPS timing

Re: [time-nuts] Can (will) a M12+T generate a negative sawtooth message ?

2014-05-18 Thread Chris Albertson
Chris, The manual clearly states -128 to +127. What's your problem with that? Yes it gives that range. It says the value is stored in 8 bits. But how is it stored? Certainly not as sign bit and 7 bit magnitude or you could not have -128.They don't say but options are either an assumed

Re: [time-nuts] Can (will) a M12+T generate a negative sawtooth message ?

2014-05-18 Thread Tom Van Baak (lab)
-128 is 0x80 +127 is 0x7F If in doubt, just look at the sawtooth correction messages coming out of your M12. /tvb (i5s) On May 18, 2014, at 4:17 PM, Chris Albertson albertson.ch...@gmail.com wrote: Chris, The manual clearly states -128 to +127. What's your problem with that? Yes it

[time-nuts] HP 53131A rev. 3413 firmware upgrade?

2014-05-18 Thread Elio C
I have already searched on Time-Nuts list but I have not found any reference to my needs: because I know lots of you are using the same device, I will ask here: I own an HP 53131A (opt 010) with firmware rev. 3413 according to its programming guide: If your Agilent 53131A contains Firmware

Re: [time-nuts] Can (will) a M12+T generate a negative sawtooth message ?

2014-05-18 Thread EWKehren
I think there is confusion between where there is a negative delay. Yes the M12 can have a negative value but in order to correct for the full range of the saw tooth at zero the DS chip has to add 128 nsec delay plus the zero value. Depending on the message it ads or subtracts from that

Re: [time-nuts] Can (will) a M12+T generate a negative sawtooth message ?

2014-05-18 Thread EWKehren
The question is what is the definition on time. Yes it will be always 140 nsec late to what the M12 calls zero. Good for a GPSDO. How ever if you want it to relate to NIST time more hardware is needed unless you can compensate that 140 nsec in antenna delay. A simple solution would be a

Re: [time-nuts] Can (will) a M12+T generate a negative sawtooth message ?

2014-05-18 Thread Chris Albertson
On Sun, May 18, 2014 at 5:19 PM, Tom Van Baak (lab) t...@leapsecond.com wrote: -128 is 0x80 +127 is 0x7F So it's twos complement to negate a number you invert all the bit then add one. The fun part of 2's complement is when you count in binary from -1 to +1 -1 = 0 = +1 = 0001 The