Re: [time-nuts] Morion MV89 and LTC6957

2013-11-11 Thread Bernd Neubig
Hi Attila, " Unfortunately, since they redesigned their webpages, i cannot find the OCXOs listed anywhere anymore (only the 8607 shows up)." Oscilloquartz has discontinued their OCXO line. The only exception is the BVA OCXO. Best regards Bernd DK1AG www.axtal.com -Ursprüngliche Nachricht---

Re: [time-nuts] Morion MV89 and LTC6957

2013-11-11 Thread Attila Kinali
Moin Bernd, On Mon, 11 Nov 2013 12:47:15 +0100 "Bernd Neubig" wrote: > > " Unfortunately, since they redesigned their webpages, i cannot find the > > OCXOs listed anywhere anymore (only the 8607 shows up)." > > Oscilloquartz has discontinued their OCXO line. The only exception is the > BVA OCXO

Re: [time-nuts] Morion MV89 and LTC6957

2013-11-11 Thread Azelio Boriani
...and, all of their products that use OCXOs? On Mon, Nov 11, 2013 at 1:32 PM, Attila Kinali wrote: > Moin Bernd, > > > On Mon, 11 Nov 2013 12:47:15 +0100 > "Bernd Neubig" wrote: > >> > " Unfortunately, since they redesigned their webpages, i cannot find the >> > OCXOs listed anywhere anymore (o

[time-nuts] Maxim DS1342

2013-11-11 Thread Russ Ramirez
I'm thinking of doing a breakout board similar to this one http://bit.ly/1buC4ZD for the subject Maxim chip. "Why?" you may ask. Unlike many other RTC chips, this one supports a 1 PPS drive. The specs are here http://bit.ly/1eE5vh1 on the Maxim site. There seems to be considerable interest in driv

Re: [time-nuts] Morion MV89 and LTC6957

2013-11-11 Thread Brian Inglis
On 2013-11-11 05:32, Attila Kinali wrote: Moin Bernd, On Mon, 11 Nov 2013 12:47:15 +0100 "Bernd Neubig" wrote: " Unfortunately, since they redesigned their webpages, i cannot find the OCXOs listed anywhere anymore (only the 8607 shows up)." Oscilloquartz has discontinued their OCXO line. T

Re: [time-nuts] Maxim DS1342

2013-11-11 Thread Didier Juges
You want to drive the RTC with an external PPS to get time/date into an Arduino? Why not feed the PPS to the Arduino and have it compute date and time? It is really not that hard to count seconds. You don't really need an external chip to do that. Didier KO4BB Russ Ramirez wrote: >I'm thinkin

[time-nuts] linux-gpib working on a RasPI

2013-11-11 Thread cfo
I have finally succeded in making linux-gpib build and load the agilent_82357a_gpib module. Now i have a 3..5 Watt- "Networked GPIB-Adapter" , where even python bindings work. pi@raspberrypi-3 ~/raspi $ sudo python Python 2.7.3 (default, Jan 13 2013, 11:20:46) [GCC 4.6.3] on linux2 Type "help

Re: [time-nuts] linux-gpib working on a RasPI

2013-11-11 Thread Bob Stewart
Good job!  I've read other good experiences about the Beiming.  I finally wound up buying a Prologix Ethernet adapter.  Let this be a warning to anyone who is tempted to buy the 82357B clone with the gold-anodized aluminum case.  Do Not Do It! Bob > > From:

Re: [time-nuts] Morion MV89 and LTC6957

2013-11-11 Thread Magnus Danielson
On 11/11/2013 06:37 PM, Brian Inglis wrote: > On 2013-11-11 05:32, Attila Kinali wrote: >> Moin Bernd, >> >> >> On Mon, 11 Nov 2013 12:47:15 +0100 >> "Bernd Neubig" wrote: >> " Unfortunately, since they redesigned their webpages, i cannot find the OCXOs listed anywhere anymore (only

Re: [time-nuts] linux-gpib working on a RasPI

2013-11-11 Thread Mark C. Stephens
Hi Bob, what is so wrong with the Anodised version? --mark -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Bob Stewart Sent: Tuesday, 12 November 2013 8:25 AM To: Discussion of precise time and frequency measurement Subject: Re: [time-

Re: [time-nuts] linux-gpib working on a RasPI

2013-11-11 Thread Bob Stewart
Hi Mark, Well, his subject is "linux-gpib", and the gold anodized clone simply will not work with the linux-gpib drivers.  I think I drove the developer batty trying to get it to go, but it's not going to happen without a complete rework of the code.  I don't know whether that will ever take pl

Re: [time-nuts] Maxim DS1342

2013-11-11 Thread Russ Ramirez
Hi Didier, True this could be done in SW, and I should have mentioned that I considered that in my post. However, these chips offer several other functions that would add complexity to the code, and I've been looking for a reason to do a simple HW project and open source it through OSH Park anyway

Re: [time-nuts] Maxim DS1342

2013-11-11 Thread Bob Camp
Hi In volume a 32KHz crystal is a sub 5 cent item. In high volume very sub 5 cents. The RTC chips are *way* more expensive. Bob On Nov 11, 2013, at 8:06 PM, Russ Ramirez wrote: > Hi Didier, > > True this could be done in SW, and I should have mentioned that I > considered that in my post. Ho

Re: [time-nuts] Maxim DS1342

2013-11-11 Thread Chris Albertson
> You want to drive the RTC with an external PPS to get time/date into an > >> Arduino? > >> Why not feed the PPS to the Arduino and have it compute date and time? > >> > >> It is really not that hard to count seconds. You don't really need an > >> external chip to do that. Typically you need mor

Re: [time-nuts] Maxim DS1342

2013-11-11 Thread paul swed
Because the 32Khz xtals are profoundly cheap and accurate to some extent. Long divide by 2 chain is very simple. The xtal could be easily adjusted close to the correct frequency. It all sort of came from watch technology. Regards Paul WB8TSL On Mon, Nov 11, 2013 at 8:06 PM, Russ Ramirez wrote: >

Re: [time-nuts] Maxim DS1342

2013-11-11 Thread Robert LaJeunesse
Many times the 32KHz oscillator is just used for ultra-low power rudimentary CPU timing, not so much for a "time of day" clock. The crystal gives more reliable timing than an RC delay, and the low power works fine for a "press to wake up" type application. Bob LaJeunesse >___

Re: [time-nuts] Maxim DS1342

2013-11-11 Thread Hal Murray
russ.rami...@gmail.com said: > Looking across the TI and Microchip lines a bit, it strikes me as odd that > more micros supporting integrated RTCs actually use two I/Os for a 32 kHz > crystal option. Why they support an RTC is not mysterious at all, but why > not the option at to drive the 1 Hz cl

Re: [time-nuts] linux-gpib working on a RasPI

2013-11-11 Thread Hal Murray
> With the Prologix unit, I had a homebrew client library (in "C") up and > running well enough to make me happy the day it arrived.  I do not use > NI-VISA, and trying to figure out that mares nest just left me completely > mystified.  I'm a good enough C programmer to do the things I need once I

Re: [time-nuts] linux-gpib working on a RasPI

2013-11-11 Thread Bob Stewart
I've got a question for you Hal.  We can take it offline if it's more than a response or two.  I opened two sockets to the adapter in one program and found the same socket id.  OK, that tells me that I have to address each device before sending commands to it, rather than having a separate socke

Re: [time-nuts] Maxim DS1342

2013-11-11 Thread Didier Juges
Hi Russ, I will venture that the vast majority of applications are served with 2 pins and a $0.10 crystal rather than the external silicon implied by a 1Hz input. The advantage of off-chip timekeeping is the low power consumption of dedicated RTC chips that makes them able to run from a coin ce

Re: [time-nuts] linux-gpib working on a RasPI

2013-11-11 Thread Prologix
Prologix Ethernet controller supports only one client connection. A second connection will disconnect the first one. Make sense, since a GPIB bus can have only one (active) controller. Currently, the controller does not allow a client to lock it exclusively, since that opens up the issue of orphane