[PEDA] alphabetic pin numbers

2001-08-06 Thread Brian Watson
Greetings, One of my fellow users asked me how to build a connector that has multiple rows with pins numbered alphabetically. This one had more that 26 pins per row and went something like 1A, 1B ,1C, ... 1a, 1b, 1c etc. I could not give him a good answer. Has anybody had to deal with

Re: [PEDA] alphabetic pin numbers

2001-08-06 Thread Coleman, Tim
I think the answer is you have to have the Pin 'Named' as 1a, 1b etc but the pin 'number' as the usual 1, 2, 3 etc. Then to make it clear on the schematic you show the name but hide the number, set this in the dialog box as you place the pins in the symbol editor. All you have to do then is

Re: [PEDA] alphabetic pin numbers

2001-08-06 Thread Michael . Binning
In my experience, I have found that Protel does not care what is in the number field. I have used a1, b1, etc, before, and it works fine. I have also used numbers like can1, can2, etc, for tuners. As long as your schematic footprint pin numbers match your PCB footprint pad numbers, Protel is

Re: [PEDA] alphabetic pin numbers

2001-08-06 Thread Jeremy POLLARD
Protel98 can handle the pin number the same as pin name(not sure about 99SE but do not see why it should change). I think that it is important to match as close as possible to real pin numbering. I have used the DIN41612 series extensively which has the same pin numbering scheme. I have a three

Re: [PEDA] alphabetic pin numbers

2001-08-06 Thread DUTTON Phil
Is there any problem with 'A' compared to 'a' though? Phil. Phil Dutton C.I.D. Senior CAD Technician IPC Certified Interconnect Designer Tenix Defence Systems Pty Ltd Systems Division - Adelaide Second Avenue, Technology Park, Mawson Lakes. SOUTH AUSTRALIA 5095

Re: [PEDA] alphabetic pin numbers

2001-08-06 Thread Coleman, Tim
As far as I know (and I haven't tested it yet) Protel isn't case sensitive, my fear of numbering pins with upper and lower case letters is that the netlist would get confused, thats why I suggested keeping a conventional pin numbering system but naming the pins with thier true pin numbers.

Re: [PEDA] alphabetic pin numbers

2001-08-06 Thread Ian Wilson
On 06:04 PM 6/08/2001 +1000, DUTTON Phil said: Is there any problem with 'A' compared to 'a' though? Phil. Yeah - this is what I would be worried about. In order not to push the software into areas that in the past have been problems (case sensitivity) I think I might use pin numbers like

Re: [PEDA] alphabetic pin numbers

2001-08-06 Thread HxEngr

[PEDA] Database size

2001-08-06 Thread Michael . Binning
Hello all, Could somebody please shed some light on this matter for me. I have a database which consists solely of libraries and templates. On Friday the database size was approximately 10MB. Today, I did a couple of additions to two of the libraries. This was minor data compared to the

Re: [PEDA] Database size

2001-08-06 Thread HxEngr

[PEDA] Fw: Altium - Think it, Design it, Build it!

2001-08-06 Thread Bagotronix Tech Support
We are now ready to take the next step in realizing this vision and are excited to announce our new corporate identity. As of August 6th 2001, Protel International Limited, with its close association to the Protel PCB design tool, will change to ALTIUM LIMITED. Excellent! Just what I have been

Re: [PEDA] Fw: Altium - Think it, Design it, Build it!

2001-08-06 Thread Jim McGrath
Hi All, With a clear focus on the design engineer, you can be confident that whatever your professional needs, Altium will meet them with state-of-the-art, accessible, powerful, easy-to-use electronic design tools and consistently high levels of customer service and support. Ut OH! Are they

[PEDA] Altium - Install it, Run it, Crash it!

2001-08-06 Thread Darryl Newberry
I don't know whether this is good or bad or no effect. I see the list price on Protel is now up to $7995!! Also I guess the stock is doing well in the Aussie Exchange, so they have lots of cash to fund even MORE acquisitions and add MORE bloated hi-brow management layers. (Gosh doesn't that

Re: [PEDA] Fw: Altium - Think it, Design it, Build it!

2001-08-06 Thread Evan Scarborough
That's probably only good until next year - then what'll it be called? And what else will get included in the package? Wasn't Altium a former owner of P-cad somewhere between the French buying it from IBM (cadam) and Accel using it muddy their product line prior to it coming here? I know I've

Re: [PEDA] Protel 99SE license for sale

2001-08-06 Thread Tony Karavidas
If anyone is looking to buy, I have one for sale. It's still sealed and the serial number will be provided for verification to serious inquiries. As everyone in this group probably knows, the list price is now $7995. I'll discount this license $2000. (925)229-8875 Tony Karavidas Encore

[PEDA] 5/5 Manufacturing Issues

2001-08-06 Thread Tim Hutcheson
Hello all, I have discovered that I might be able to remove about 200 source resistors from my 5/5 mil design if I can manufacture with exact impedance match a 4-layer FR4 board. It seems that laminates down to about 2.5 mil are available but conventional wisdom is to not go below 4 mil and

Re: [PEDA] Altium - Dilute it

2001-08-06 Thread Mike Reagan
My only concerns for the Protel namebrand being diluted and migrated into one package with Accel under the Altium Brand name.It makes abosolutely no sense to have overlapping products with the lowest price product being superiour. As an example Cadence will use Orcad ( an excellent, but

Re: [PEDA] 5/5 Manufacturing Issues

2001-08-06 Thread HxEngr

[PEDA] name change

2001-08-06 Thread Rene Tschaggelar
Usually changing the name of a company heralds bad news. The reasons given are as meaningless as usual. How long will they exist ? Rene -- Ing.Buero R.Tschaggelar - http://www.ibrtses.com * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * To post a message: mailto:[EMAIL PROTECTED]

Re: [PEDA] 5/5 Manufacturing Issues

2001-08-06 Thread Tim Hutcheson
Thanks Mike but I'm just going by what I read. For example, Brian Young in Digital Signal Integrity says In contrast to parallel termination at the load, source termination allows the signal to reflect off the load and travel back to the source, where is absorbed by series termination. The

Re: [PEDA] 5/5 Manufacturing Issues

2001-08-06 Thread Bagotronix Tech Support
Tim: Keep in mind that only a resistor can absorb. A PCB trace cannot absorb anything. If you really need a reflection absorbed at the source, you really need a resistor to absorb it. Remember that when impedances are specified as one simple number (i.e. 50 ohm), that it is really the

Re: [PEDA] 5/5 Manufacturing Issues

2001-08-06 Thread Tim Hutcheson
Cool. Traces are short, less than 2.5 max, getting shorter as I eliminate resistors. :-) Rise time is large, nominally it is 2 nsec. Thanks for the vote -Original Message- From: Jon Elson [mailto:[EMAIL PROTECTED]] Sent: Monday, August 06, 2001 4:08 PM To: Protel EDA Forum Subject:

Re: [PEDA] 5/5 Manufacturing Issues

2001-08-06 Thread Jon Elson
[EMAIL PROTECTED] wrote: I'm skeptical. Even with source terminations, you've got a nasty mismatch at the destination, Right. The reflection bounces off the far end, back toward the source, and is absorbed as completely as possible by the source impedance. If you need incident wave

Re: [PEDA] 5/5 Manufacturing Issues

2001-08-06 Thread Jon Elson
Mike Reagan wrote: Tim, I have to respond to your concerns and about controlled impedance. First of all if the resistors you are claiming to eliminate are located at the source as is a commmon practice, These resistors are not in the circuit for impedance purposes. I will stay away

Re: [PEDA] 5/5 Manufacturing Issues

2001-08-06 Thread Tim Hutcheson
And of course I meant the remaining 1/6. Tim -Original Message- From: Bagotronix Tech Support [mailto:[EMAIL PROTECTED]] Sent: Monday, August 06, 2001 4:07 PM To: Protel EDA Forum Subject: Re: [PEDA] 5/5 Manufacturing Issues Tim: Dude, your math is like, sooo narley! The driver

Re: [PEDA] 5/5 Manufacturing Issues

2001-08-06 Thread Mike Reagan
source termination allows the signal to reflect off the load and travel back to the source, where is absorbed by series termination. And I will bet his analysis was done with sine wave reflections not a rising edge of a pulse. Try a simple experiment, pick a design you already

Re: [PEDA] 5/5 Manufacturing Issues

2001-08-06 Thread Brian Guralnick
| Dude, I wasn't trying to be analytical but was only referring to the example | I posed earlier, 50 ohm source impedance looking into the driver from the | reflected wave and a 10 ohm source resistor which at frequency, forms a | voltage divider that absorbs power in roughly that manner I think.

Re: [PEDA] 5/5 Manufacturing Issues

2001-08-06 Thread Tim Hutcheson
The loads are high impedance, for design purposes they are purely reflective. That is inherent in the reflective wave approach because it eleiminates switching power being consumed at the load. Tim -Original Message- From: Brian Guralnick [mailto:[EMAIL PROTECTED]] Sent: Monday, August

Re: [PEDA] 5/5 Manufacturing Issues

2001-08-06 Thread Jon Elson
Tim Hutcheson wrote: Actually I was thinking the authors meant that the driver absorbs about 5/6 of the signal at frequency, while the resistor absorbs the remaining 1/10, at any frequency. Is that incorrect? That is correct. Keep in mind that only a resistor can absorb. A PCB trace

Re: [PEDA] 5/5 Manufacturing Issues

2001-08-06 Thread Jon Elson
Tim Hutcheson wrote: Cool. Traces are short, less than 2.5 max, getting shorter as I eliminate resistors. :-) Rise time is large, nominally it is 2 nsec. This should work. 2 nS Tr is pretty generous. The wavefront with a 2 nS Tr is about 15 long, so you won't even see the incident wave

Re: [PEDA] 5/5 Manufacturing Issues

2001-08-06 Thread Jon Elson
Tim Hutcheson wrote: equations than one with two ground planes, termed stripline. In his case, the two ground planes lower the effective impedance for a given trace width. I never said I was using stripline stackup. I said in the beginning it was a conventional 4-layer board and

Re: [PEDA] 5/5 Manufacturing Issues

2001-08-06 Thread Tim Hutcheson
Yes, the reference design is a large board with all possible associated components demonstrated and long traces of course. Trise is 2 nsec., (Tprop=138ps/in)., Lcrit=2.4 inches regards, Tim Hutcheson [EMAIL PROTECTED] -Original Message- From: Jon Elson [mailto:[EMAIL PROTECTED]]

Re: [PEDA] 5/5 Manufacturing Issues

2001-08-06 Thread Tim Hutcheson
My thanks to all and especially Jon Elson for an enlightening little session on this subject. I would otherwise have no way of anticipating the consequences of this idea. regards, Tim Hutcheson [EMAIL PROTECTED] -Original Message- From: Jon Elson [mailto:[EMAIL PROTECTED]] Sent:

[PEDA] OT - low temp failure mechanisms

2001-08-06 Thread Ian Wilson
G'Day, Anyone got good references to the failure mechanism of plastic packaged ICs at lowish temps (not talking cryogenic) - but really about -40 deg C when a device is 0 or -15 deg C rated. Need references to the failure mechanisms so appropriate power cycling, pre-heating etc can be

Re: [PEDA] Fw: Altium - Think it, Design it, Build it!

2001-08-06 Thread Dan Kennedy
Yee Ha!! Stick it to them Ivan... Proud Protel 3.1 user, Dan Kennedy Great River Electronics Inc. Bagotronix Tech Support wrote: Other (in)famous corporate name changes: ATT - Lucent (in trouble now) HP - Agilent (still good, but sounds like 'flatulent') Anderson Consulting - Accenture

Re: [PEDA] Altium - Dilute it

2001-08-06 Thread Andrew J Jenkins
On 03:01 PM 8/6/2001 -0400, Mike Reagan wrote: My only concerns for the Protel namebrand being diluted and migrated into one package with Accel under the Altium Brand name.It makes abosolutely no sense to have overlapping products with the lowest price product being superiour. As an example

[PEDA] lost polygons

2001-08-06 Thread Thomas
Is there any way to make lost polygon fills visible? Or delete them? By lost I mean that 'connect to net' and 'remove dead copper' were selected for a polygon fill and through updating, or copying from one design to another, the net name has been removed, and so the polygon disappears.