Re: [time-nuts] Prologix GPIB/USB converter help...

2007-04-16 Thread SAIDJACK
In a message dated 4/15/2007 17:11:52 Pacific Daylight Time, [EMAIL PROTECTED] writes: Unfortunately, no. Updated firmware requires the new hardware. Why are you not using hardware flow control? Which platform and application are you using? Hi Abdul, we modified the board to have

Re: [time-nuts] Prologix GPIB/USB converter help...

2007-04-16 Thread SAIDJACK
In a message dated 4/16/2007 11:22:11 Pacific Daylight Time, [EMAIL PROTECTED] writes: In that case the new firmware will not be compatible at all. The new hardware uses FTDI FT245R USB FIFO chip which has a parallel interface to the micro. Host side USB drivers make it appear like a

Re: [time-nuts] Prologix GPIB/USB converter help...

2007-04-16 Thread Tom Van Baak
In that case the new firmware will not be compatible at all. The new hardware uses FTDI FT245R USB FIFO chip which has a parallel interface to the micro. Host side USB drivers make it appear like a virtual serial port, which is why all the serial port parameters can be ignored. Abdul

Re: [time-nuts] Prologix GPIB/USB converter help...

2007-04-16 Thread John Ackermann N8UR
Tom Van Baak said the following on 04/16/2007 05:41 PM: In that case the new firmware will not be compatible at all. The new hardware uses FTDI FT245R USB FIFO chip which has a parallel interface to the micro. Host side USB drivers make it appear like a virtual serial port, which is why

[time-nuts] Most accurate clock on your wrist

2007-04-16 Thread Palfreyman, Jim L
Hi Folks, What is the most accurate wrist watch you can purchase? Obviously the radio controlled ones are the best, but I'm curious as to the fully self controlled units. Oh and yes I have seen the photo of the caesium clock attached to someone's wrist! Also, on the NIST website they talk about

Re: [time-nuts] Prologix GPIB/USB converter help...

2007-04-16 Thread Prologix
Interesting. I used to sell a GPIB-RS232 version some years ago. Sales were low since customers were clamoring for an USB version! But then I hadn't discovered this crowd :-) Happy to take another look at it. I am in the process of designing a GPIB-Ethernet controller. You think that will be of

Re: [time-nuts] Most accurate clock on your wrist

2007-04-16 Thread Sebastian Stolp
hi jim, here's the thing you were asking for: http://home.xnet.com/~cmaddox/omega_megaquartz_2400.html as for myself - i do rely on a seiko 7548 reference quartz watch with a 'drift' of +/- 15 sec. per month. noz bad for a unit used for boiling eggs on a sunday morning ;-) best regards,

Re: [time-nuts] Most accurate clock on your wrist

2007-04-16 Thread David Forbes
Palfreyman, Jim L wrote: Hi Folks, What is the most accurate wrist watch you can purchase? Obviously the radio controlled ones are the best, but I'm curious as to the fully self controlled units. Oh and yes I have seen the photo of the caesium clock attached to someone's wrist! Also,

Re: [time-nuts] Prologix GPIB/USB converter help...

2007-04-16 Thread John Ackermann N8UR
Prologix said the following on 04/16/2007 07:17 PM: I am in the process of designing a GPIB-Ethernet controller. You think that will be of any interest? Yes!!! John ___ time-nuts mailing list time-nuts@febo.com

Re: [time-nuts] Prologix GPIB/USB converter help...

2007-04-16 Thread SAIDJACK
In a message dated 4/16/2007 16:17:05 Pacific Daylight Time, [EMAIL PROTECTED] writes: Interesting. I used to sell a GPIB-RS232 version some years ago. Sales were low since customers were clamoring for an USB version! But then I hadn't discovered this crowd :-) Happy to take another look at

Re: [time-nuts] Prologix GPIB/USB converter help...

2007-04-16 Thread Christopher Hoover
Prologix [EMAIL PROTECTED] wrote: I am in the process of designing a GPIB-Ethernet controller. You think that will be of any interest? Abdul Yes, very much so. Of course price is key. -ch ___ time-nuts mailing list time-nuts@febo.com

Re: [time-nuts] Prologix GPIB/USB converter help...

2007-04-16 Thread Tom Van Baak
Interesting. I used to sell a GPIB-RS232 version some years ago. Sales were low since customers were clamoring for an USB version! But then I hadn't discovered this crowd :-) Happy to take another look at it. You'll find two sets of users. End-users want the latest one-click, plug-n-play, PC

Re: [time-nuts] Most accurate clock on your wrist

2007-04-16 Thread Peter Lacey
There is one on eBay right now, item# 130101409636. Peter Lacey AA1ZU -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Sebastian Stolp Sent: Monday, April 16, 2007 7:20 PM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts]

Re: [time-nuts] Prologix GPIB/USB converter help...

2007-04-16 Thread Didier Juges
GPIB-ENET controllers by NI are on and off available on eBay for about $200. I would think there is a market for an ethernet/GPIB controller in that price range. I also second the RS-232 option. While the USB-parallel interface chip has the potential of being much faster (which is great when

Re: [time-nuts] Prologix GPIB/USB converter help...

2007-04-16 Thread Tom Van Baak
As someone pointed out, a Serial-USB adapter cost only about $10 (www.geeks.com), and I would not mind having a GPIB-Serial device, and attach a Serial-USB if I want to. Once you provide USB only, that's it, it will be USB or nothing. The one drawback of a Serial only controller is that

Re: [time-nuts] Prologix GPIB/USB converter help...

2007-04-16 Thread John Miles
I'll admit I'm kind of surprised at all of the users sticking up for RS-232. I would've thought Abdul would be safe in abandoning his internal RS-232 data pathway between the Atmel and FTDI chip. What are some examples of RS-232 hosts that need to talk to GPIB test equipment? Old/retired laptops