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 Msg #   Date  |  Thread
1564

From: Rob Moline  <robm@ogre.com.au>
Date: Sat Jul 26, 2003 0:36pm
Subject: Re: Serial communication over balanced lines (version 2)
    
Digitally demodulating is computer-intensive needs a DSP and seriously 
mathematical code. Better to use a $10 analogue V23 modem IC which gives a 
1 or 0 output from the tone input. (Also has the 'mo' part, can make the 
V23 tones from a 1 or 0 input.)
Regards,
Rob

At 09:05 PM 23/07/2003 +1000, you wrote:
>Thanks to everyone who responded to my question a few weeks ago re serial
>communication over balanced lines, and  a special thank you  to those who
>suggested RS485 which was very attractive, but unfortunately the drivers
>have a relatively low common mode voltage rating of 12 volts.
>
>I have chosen to use V23 which generates  voice frequency tones that can be
>passed through a line isolating transformer, which will protect the PIC
>against damage caused by accidental cross connection (eg if the cable gets
>damaged)  with other circuits operating at 30 volts DC which share the same
>cable.  (With RS485 to 10 nodes there could be 10 driver chips to replace if
>this happened )
>
>I have obtained code for PIC generation of  the pure sinewave tones for
>transmission, but if anyone can direct me to a source of code for PIC based
>demodulation of the V23 tones at the receiving end it,  would be greatly
>appreciated .
>
>Thank you again
>Harry Pfeifer

   
ADVERTISEMENT
1565

From: Alex Gibson  <alxx@alxx.net>
Date: Sat Jul 26, 2003 3:23pm
Subject: Re: in-circuit debugging
    
microchip icd2 
a couple of mates have them.
work well with the later versions of mplab
About Aus$365 with the picdem2 board
http://www.microchip.com/1010/pline/tools/picmicro/icds/icd2/index.htm  
http://www.microchip.com/1010/pline/tools/picmicro/icds/icd2/cupola/pcdmplus/index.htm
http://www.microchip.com/1010/pline/tools/emulator/index.htm


Also olimex make one.
http://www.olimex.com/dev/pic-icd1-b.html

Alex


----- Original Message ----- 
From: "Harry Pfeifer" <hpfeifer@d...>
To: <simmstick@yahoogroups.com>
Sent: Thursday, July 24, 2003 10:14 PM
Subject: [simmstick] in-circuit debugging


> I am interested in in-circuit debugging, primarily with 40 pin 87x chips but
> I am also working with 16F84's. Don McKenzie has directed me to information
> on the Dontronics website (www.dontronics.com/icd.html)  on a debugger which
> is sent from Brazil, which works with MPLAB.
> 
> Can any one suggest other options
> 
> Harry Pfeifer
> 
> 
> 
> 
> 
> To Post a message, send it to:   simmstick@e...
> 
> To Unsubscribe, send a blank message to: simmstick-unsubscribe@e... 
> 
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ 
> 
> 
>
1566

From: Alex Gibson  <alxx@alxx.net>
Date: Sat Jul 26, 2003 4:22pm
Subject: Re: in-circuit debugging
   
Only thing is the cost, depending on quantity your buying.
16f877a's are usually cheaper than 18f452(pin compatable with 16f877).
except 18f452 has more flash and ram.
 
 
If your not using dip  you have a lot more options.
 
One thing I'm surprised is microchip is still supporting plcc
considering a lot of other manufacturers are dropping plcc completely.
 
Replacing plcc with either  mlf or vqfp.
 
You should have heard the complaints and whinging at the recent atmel seminars
here in Sydney.
 
 
 
Alex
 
 
----- Original Message -----
Sent: Friday, July 25, 2003 12:09 AM
Subject: RE: [simmstick] in-circuit debugging

No on the topic you asked about but you might want to look at using 18Fxx2 instead of 87x. The 18Fs are much better devices in terms of code efficiency, performance, freq range and far simpler to code now that the stupid banking requirement has gone.
 
Andrew
-----Original Message-----
From: Harry Pfeifer [mailto:hpfeifer@dcsi.net.au]
Sent: Thursday, 24 July 2003 8:14 PM
To: simmstick@yahoogroups.com
Subject: [simmstick] in-circuit debugging

I am interested in in-circuit debugging, primarily with 40 pin 87x chips but
I am also working with 16F84's. Don McKenzie has directed me to information
on the Dontronics website (www.dontronics.com/icd.html)  on a debugger which
is sent from Brazil, which works with MPLAB.

Can any one suggest other options

Harry Pfeifer





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1567

From: oldemp4  <oldemp4@yahoo.com>
Date: Mon Jul 28, 2003 5:25pm
Subject: Are you a military single or admirer?If you are,please check this out!
    
http://www.militaryfriends.com/i/5
1568

From: roddonau  <simmstick_moderator@dontronics.com>
Date: Mon Jul 28, 2003 6:29pm
Subject: oldemp4@yahoo.com
    
oldemp4@y...

Why is it that these jerks go to the trouble of joining a group
just to post a spam?

Member removed.

Don...
1569

From: Tom Parker  <tparker@netspace.net.au>
Date: Mon Jul 28, 2003 10:18pm
Subject: RE: oldemp4@yahoo.com
    
> Why is it that these jerks go to the trouble of joining a group
> just to post a spam?
>
> Member removed.

Unfortunately you can automate anything in this world with a script.  I
closed my infrequently used group because I couldn't be bothered verifying
everyone that wanted to join (this is the only way around this I think).

Cheers,
Tom
1570

From: Justin James Clayden  <justy@coolfusion.com.au>
Date: Thu Jul 31, 2003 3:00am
Subject: DT-108 Simmstick Video
    
Hey Simmstickers,

I've recently assembled the DT108 video on a simmstick and I'm having..
issues.

The scenario: I have an onboard AVR902313 plus MAX232.  I've installed the
PAL crystal and verified with a multitester that it's oscillating at
17.73MHz.

The symptoms:  The thing seems to boot up OK, however it seems to be forever
trying to get in sync- twice now it's actually worked, and I've seen a blue
background with the words 'Simmstick Video' on the screen.  I saw some
flashing clocks too.. detail.. detail.

Any clues?

I'm also unsure about the role of the onboard RS232- is it only required if
the onboard micro isn't used?  Are these the likely scenarios? :

1. Just the video chip- other driving circuits used on other simmsticks to
talk to the chip by setting levels on its pins.

2. The video chip is talked to by an onboard micro and this micro is
optionally talked to be the RS232, which is receiving data via either SI/SO
or TX/RX.

My knowledge of these issues is a little perforated!

Cheers,
Justin

 =================================
| Justin James Clayden            \
| Director, Cool Fusion Multimedia \
| mailto:justy@c...    \
| http://www.coolfusion.com.au       \
=======================================
1571

From: Leon Blakeley  <l.blakeley@cfa.vic.gov.au>
Date: Wed Jul 30, 2003 10:03am
Subject: DM74LS244WM
    
Hi All,
DM74LS244WM
Has anyone used these chips? (Octal tri-stateline driver)    According
to a Fairchild spec sheet, the max V-in should be 7V
I have a device which has digital inouts directly vonnev\cted with no
protection that I can see, the spec sheet claims input Hi of 4 - 30V !!
To my reckoning that should fry the chip!
The Device is a Nu-Dam ND6053, it is a RS485 controlled digital input
module (16 i/p's)
Yes I know a simmstik and AVR or PIC would be ideal but "management"
prefer "off the shelf"
I've put 16V (Supply) onto an input for 15 secs or so with no obvious
ill effect, however the devices are failing in the field where the I/P
is unlikely to go that hi!
Any clues?
Cheers

--
Leon Blakeley
CFA Communications
Ph (03) 92628400
Fax  (03) 92628383

PO Box 701
Mt. Waverley
3149

/_\   This message transmitted on 100% recycled electrons.

CAUTION - This message is intended for the use of the individual or
entity named above and may contain information   If you are not the
intended recipient of this message you
are hereby notified that any use, dissemination, distribution or
reproduction of this message is prohibited and that you must not take
any action in reliance on it.  If you have received this communication
in error, please notify CFA immediately and destroy the original
message.
1572

From: sammi_swallows_good6  <sammi_swallows_good6@yahoo.com>
Date: Wed Jul 30, 2003 11:38am
Subject: my next orgy party
    
hey, i'll be having another big orgy party in about 3 weeks, and wanted to send out another invitation to see who wants to come to this one.

if you were at the last one, you already know how awesome it was, and you're invited again.  it's at the same place, and there will be even more single girls there this time! just remember...clothing isn't even an option!  ;-)

come and RSVP at this link,

http://www.eroticy.com/landing.asp?AFL=AYHO/

just leave me a message on my profile if you want to come, and i'll do the rest.

See ya there!
1573

From: roddonau  <simmstick_moderator@dontronics.com>
Date: Wed Jul 30, 2003 11:44am
Subject: sammi_swallows_good6@yahoo.com
    
sammi_swallows_good6@y...

member manually removed.

these guys will destroy every newsgroup going if this keeps up.

Don...
1574

From: Ben Wirz  <ben@wirz.com>
Date: Wed Jul 30, 2003 1:01pm
Subject: Re: sammi_swallows_good6@yahoo.com
    
Hey Don,

         I recommend you change your group settings to "New Members 
Moderated"  It should solve your problems.  Any new members will have to 
have their posts approved by you prior to them going through to the group.

-Ben

At 01:44 AM 7/30/2003 +0000, you wrote:
>sammi_swallows_good6@y...
>
>member manually removed.
>
>these guys will destroy every newsgroup going if this keeps up.
>
>Don...
>
>
>
>To Post a message, send it to:   simmstick@e...
>
>To Unsubscribe, send a blank message to: simmstick-unsubscribe@e...
>
>Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/

Ben Wirz                                    mailto:ben@w...
Wirz Electronics, Inc                   http://www.wirz.com/
1575

From: roddonau  <simmstick_moderator@dontronics.com>
Date: Wed Jul 30, 2003 1:24pm
Subject: Re: sammi_swallows_good6@yahoo.com
    
--- In simmstick@yahoogroups.com, Ben Wirz <ben@w...> wrote:
> Hey Don,
> 
>          I recommend you change your group settings to "New Members 
> Moderated"  It should solve your problems.  Any new members will 
have to 
> have their posts approved by you prior to them going through to the 
group

a good idea Ben, the only trouble is I get so much spam through 
my moderator address, that I delete all mail going to it 
automatically, and keep in contact with the group as a member.

It is easier for me to remove the occassional spammer that signs up as 
a member, than go through the mountain of spams I get as a moderator.

Yahoo doesn't want to know about the problem.

If the problem increases, them  I may have to reconsider my options.

Don...
1576

From: Andrew Smallridge  <asmallri@hotmail.com>
Date: Wed Jul 30, 2003 2:00pm
Subject: RE: DM74LS244WM
   
Which device is failing in the field the 74LS244?
 
The Nu-Dam ND6053 contains an internal power supply to regulate the incoming 10-to-30 power supply inputs to 5V. The digital inputs are TTL compatible. Putting a higher voltage on the inputs could damage it depending on how they have inplemented input protection.
 
I suggest you look at the common ground between your logic and the ND6053. It is possible you have a ground differential which is causing the problems.
 
Regards, Andrew
 
-----Original Message-----
From: Leon Blakeley [mailto:l.blakeley@cfa.vic.gov.au]
Sent: Wednesday, 30 July 2003 8:04 AM
To: Simmstick
Subject: [simmstick] DM74LS244WM

Hi All,
DM74LS244WM
Has anyone used these chips? (Octal tri-stateline driver)    According
to a Fairchild spec sheet, the max V-in should be 7V
I have a device which has digital inouts directly vonnev\cted with no
protection that I can see, the spec sheet claims input Hi of 4 - 30V !!
To my reckoning that should fry the chip!
The Device is a Nu-Dam ND6053, it is a RS485 controlled digital input
module (16 i/p's)
Yes I know a simmstik and AVR or PIC would be ideal but "management"
prefer "off the shelf"
I've put 16V (Supply) onto an input for 15 secs or so with no obvious
ill effect, however the devices are failing in the field where the I/P
is unlikely to go that hi!
Any clues?
Cheers

--
Leon Blakeley
CFA Communications
Ph (03) 92628400
Fax  (03) 92628383

PO Box 701
Mt. Waverley
3149

/_\   This message transmitted on 100% recycled electrons.

CAUTION - This message is intended for the use of the individual or
entity named above and may contain information   If you are not the
intended recipient of this message you
are hereby notified that any use, dissemination, distribution or
reproduction of this message is prohibited and that you must not take
any action in reliance on it.  If you have received this communication
in error, please notify CFA immediately and destroy the original
message.




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1577

From: Leon Blakeley  <l.blakeley@cfa.vic.gov.au>
Date: Wed Jul 30, 2003 2:33pm
Subject: Re: DM74LS244WM
   
Hi Andrew,
Yes the  74LS244, but some have the "default" input damaged, the documentation warns against taking that high, but they claim a "Hi i/p" is between 4 and 30V, as far as I've been able to ascertain the i/p pins are internally pulled to Vcc (5V) but they are directly connected to the 74LS244 with only a 10k pullup and a diode (cathode to I/P).
They aren't failing in the field as such, the techs are killing them at programming stage! they have to set an adress and "checksum enable".
Sometimes what ever they do happens while the " link" is in the programming position, then they kill the micro (winbond 8051?)
There is little support and documentation is limited and contradictory!
I'm disappointed as they looked like a great device for distributed I/O!
Thanks foy your answer
Cheers
Leon

Andrew Smallridge wrote:

 Which device is failing in the field the 74LS244?The Nu-Dam ND6053 contains an internal power supply to regulate the incoming 10-to-30 power supply inputs to 5V. The digital inputs are TTL compatible. Putting a higher voltage on the inputs could damage it depending on how they have inplemented input protection.I suggest you look at the common ground between your logic and the ND6053. It is possible you have a ground differential which is causing the problems.Regards, Andrew 
-----Original Message-----
From: Leon Blakeley [mailto:l.blakeley@cfa.vic.gov.au]
Sent: Wednesday, 30 July 2003 8:04 AM
To: Simmstick
Subject: [simmstick] DM74LS244WM
 
Hi All,
DM74LS244WM
Has anyone used these chips? (Octal tri-stateline driver)    According
to a Fairchild spec sheet, the max V-in should be 7V
I have a device which has digital inouts directly vonnev\cted with no
protection that I can see, the spec sheet claims input Hi of 4 - 30V !!
To my reckoning that should fry the chip!
The Device is a Nu-Dam ND6053, it is a RS485 controlled digital input
module (16 i/p's)
Yes I know a simmstik and AVR or PIC would be ideal but "management"
prefer "off the shelf"
I've put 16V (Supply) onto an input for 15 secs or so with no obvious
ill effect, however the devices are failing in the field where the I/P
is unlikely to go that hi!
Any clues?
Cheers

--
Leon Blakeley
CFA Communications
Ph (03) 92628400
Fax  (03) 92628383

PO Box 701
Mt. Waverley
3149

/_\   This message transmitted on 100% recycled electrons.

CAUTION - This message is intended for the use of the individual or
entity named above and may contain information   If you are not the
intended recipient of this message you
are hereby notified that any use, dissemination, distribution or
reproduction of this message is prohibited and that you must not take
any action in reliance on it.  If you have received this communication
in error, please notify CFA immediately and destroy the original
message.
 
 
 

To Post a message, send it to:   simmstick@eGroups.com

To Unsubscribe, send a blank message to: simmstick-unsubscribe@eGroups.com

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To Post a message, send it to:   simmstick@eGroups.com

To Unsubscribe, send a blank message to: simmstick-unsubscribe@eGroups.com

Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.

--
Leon Blakeley
CFA Communications
Ph (03) 92628400
Fax  (03) 92628383

PO Box 701
Mt. Waverley
3149

/_\   This message transmitted on 100% recycled electrons.

CAUTION - This message is intended for the use of the individual or
entity named above and may contain information   If you are not the intended recipient of this message you
are hereby notified that any use, dissemination, distribution or
reproduction of this message is prohibited and that you must not take
any action in reliance on it.  If you have received this communication
in error, please notify CFA immediately and destroy the original
message.
 

1578

From: Alf Katz  <alfkatz@ieee.org>
Date: Wed Jul 30, 2003 3:05pm
Subject: Re: DM74LS244WM
   
This particular clone of the Advantech ADAM 4053 is not suitable for 4-30V operation at all.  The datasheet specifically says that it is suitable for dry contact (voltage free contact e.g. relay closure) or TTL voltages only.  This is not the right device for your application.  The only part of this device that can handle 30V is the power supply input.  See the data sheet at  http://www.adlinktech.com/publications/manual/ND6000/ND6053Sheet.pdf
 
This is not the right part for your application.  I suggest the original Advantech ADAM 4053 does have 4-30V inputs.  Are you sure you were looking at the clone data sheet, not the original?
 
Cheers
Alf Katz
 
 
----- Original Message -----
Sent: Wednesday, July 30, 2003 2:33 PM
Subject: Re: [simmstick] DM74LS244WM

Hi Andrew,
Yes the  74LS244, but some have the "default" input damaged, the documentation warns against taking that high, but they claim a "Hi i/p" is between 4 and 30V, as far as I've been able to ascertain the i/p pins are internally pulled to Vcc (5V) but they are directly connected to the 74LS244 with only a 10k pullup and a diode (cathode to I/P).
They aren't failing in the field as such, the techs are killing them at programming stage! they have to set an adress and "checksum enable".
Sometimes what ever they do happens while the " link" is in the programming position, then they kill the micro (winbond 8051?)
There is little support and documentation is limited and contradictory!
I'm disappointed as they looked like a great device for distributed I/O!
Thanks foy your answer
Cheers
Leon

Andrew Smallridge wrote:

 Which device is failing in the field the 74LS244?The Nu-Dam ND6053 contains an internal power supply to regulate the incoming 10-to-30 power supply inputs to 5V. The digital inputs are TTL compatible. Putting a higher voltage on the inputs could damage it depending on how they have inplemented input protection.I suggest you look at the common ground between your logic and the ND6053. It is possible you have a ground differential which is causing the problems.Regards, Andrew 
-----Original Message-----
From: Leon Blakeley [mailto:l.blakeley@cfa.vic.gov.au]
Sent: Wednesday, 30 July 2003 8:04 AM
To: Simmstick
Subject: [simmstick] DM74LS244WM
 
Hi All,
DM74LS244WM
Has anyone used these chips? (Octal tri-stateline driver)    According
to a Fairchild spec sheet, the max V-in should be 7V
I have a device which has digital inouts directly vonnev\cted with no
protection that I can see, the spec sheet claims input Hi of 4 - 30V !!
To my reckoning that should fry the chip!
The Device is a Nu-Dam ND6053, it is a RS485 controlled digital input
module (16 i/p's)
Yes I know a simmstik and AVR or PIC would be ideal but "management"
prefer "off the shelf"
I've put 16V (Supply) onto an input for 15 secs or so with no obvious
ill effect, however the devices are failing in the field where the I/P
is unlikely to go that hi!
Any clues?
Cheers

--
Leon Blakeley
CFA Communications
Ph (03) 92628400
Fax  (03) 92628383

PO Box 701
Mt. Waverley
3149

/_\   This message transmitted on 100% recycled electrons.

CAUTION - This message is intended for the use of the individual or
entity named above and may contain information   If you are not the
intended recipient of this message you
are hereby notified that any use, dissemination, distribution or
reproduction of this message is prohibited and that you must not take
any action in reliance on it.  If you have received this communication
in error, please notify CFA immediately and destroy the original
message.
 
 
 

To Post a message, send it to:   simmstick@eGroups.com

To Unsubscribe, send a blank message to: simmstick-unsubscribe@eGroups.com

Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.


To Post a message, send it to:   simmstick@eGroups.com

To Unsubscribe, send a blank message to: simmstick-unsubscribe@eGroups.com

Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.

--
Leon Blakeley
CFA Communications
Ph (03) 92628400
Fax  (03) 92628383

PO Box 701
Mt. Waverley
3149

/_\   This message transmitted on 100% recycled electrons.

CAUTION - This message is intended for the use of the individual or
entity named above and may contain information   If you are not the intended recipient of this message you
are hereby notified that any use, dissemination, distribution or
reproduction of this message is prohibited and that you must not take
any action in reliance on it.  If you have received this communication
in error, please notify CFA immediately and destroy the original
message.
 

To Post a message, send it to:   simmstick@eGroups.com

To Unsubscribe, send a blank message to: simmstick-unsubscribe@eGroups.com

Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.

1579

From: Alf Katz  <alfkatz@ieee.org>
Date: Wed Jul 30, 2003 3:31pm
Subject: Re: DM74LS244WM
   
The Axiomtech IDAM 7053 is another Advantech 4053 clone.  This one, likemthe original has protection for 4-30V inputs.
 
Cheers
Alf Katz
 
 
----- Original Message -----
From: Alf Katz
Sent: Wednesday, July 30, 2003 3:05 PM
Subject: Re: [simmstick] DM74LS244WM

This particular clone of the Advantech ADAM 4053 is not suitable for 4-30V operation at all.  The datasheet specifically says that it is suitable for dry contact (voltage free contact e.g. relay closure) or TTL voltages only.  This is not the right device for your application.  The only part of this device that can handle 30V is the power supply input.  See the data sheet at  http://www.adlinktech.com/publications/manual/ND6000/ND6053Sheet.pdf
 
This is not the right part for your application.  I suggest the original Advantech ADAM 4053 does have 4-30V inputs.  Are you sure you were looking at the clone data sheet, not the original?
 
Cheers
Alf Katz
 
 
----- Original Message -----
Sent: Wednesday, July 30, 2003 2:33 PM
Subject: Re: [simmstick] DM74LS244WM

Hi Andrew,
Yes the  74LS244, but some have the "default" input damaged, the documentation warns against taking that high, but they claim a "Hi i/p" is between 4 and 30V, as far as I've been able to ascertain the i/p pins are internally pulled to Vcc (5V) but they are directly connected to the 74LS244 with only a 10k pullup and a diode (cathode to I/P).
They aren't failing in the field as such, the techs are killing them at programming stage! they have to set an adress and "checksum enable".
Sometimes what ever they do happens while the " link" is in the programming position, then they kill the micro (winbond 8051?)
There is little support and documentation is limited and contradictory!
I'm disappointed as they looked like a great device for distributed I/O!
Thanks foy your answer
Cheers
Leon

Andrew Smallridge wrote:

 Which device is failing in the field the 74LS244?The Nu-Dam ND6053 contains an internal power supply to regulate the incoming 10-to-30 power supply inputs to 5V. The digital inputs are TTL compatible. Putting a higher voltage on the inputs could damage it depending on how they have inplemented input protection.I suggest you look at the common ground between your logic and the ND6053. It is possible you have a ground differential which is causing the problems.Regards, Andrew 
-----Original Message-----
From: Leon Blakeley [mailto:l.blakeley@cfa.vic.gov.au]
Sent: Wednesday, 30 July 2003 8:04 AM
To: Simmstick
Subject: [simmstick] DM74LS244WM
 
Hi All,
DM74LS244WM
Has anyone used these chips? (Octal tri-stateline driver)    According
to a Fairchild spec sheet, the max V-in should be 7V
I have a device which has digital inouts directly vonnev\cted with no
protection that I can see, the spec sheet claims input Hi of 4 - 30V !!
To my reckoning that should fry the chip!
The Device is a Nu-Dam ND6053, it is a RS485 controlled digital input
module (16 i/p's)
Yes I know a simmstik and AVR or PIC would be ideal but "management"
prefer "off the shelf"
I've put 16V (Supply) onto an input for 15 secs or so with no obvious
ill effect, however the devices are failing in the field where the I/P
is unlikely to go that hi!
Any clues?
Cheers

--
Leon Blakeley
CFA Communications
Ph (03) 92628400
Fax  (03) 92628383

PO Box 701
Mt. Waverley
3149

/_\   This message transmitted on 100% recycled electrons.

CAUTION - This message is intended for the use of the individual or
entity named above and may contain information   If you are not the
intended recipient of this message you
are hereby notified that any use, dissemination, distribution or
reproduction of this message is prohibited and that you must not take
any action in reliance on it.  If you have received this communication
in error, please notify CFA immediately and destroy the original
message.
 
 
 

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Leon Blakeley
CFA Communications
Ph (03) 92628400
Fax  (03) 92628383

PO Box 701
Mt. Waverley
3149

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1580

From: Leon Blakeley  <l.blakeley@cfa.vic.gov.au>
Date: Wed Jul 30, 2003 3:39pm
Subject: Re: DM74LS244WM
   
Thanks for the reply, this is from the "manual" that was supplied when we asked that the "datasheet" be clarified.
 

¨ Input
· Channel numbers : 16
· Dry Contact:
· Logical level 0 : close to GND
· Logical level 1 : open
· Wet Contact :
· Logical level 0 : +2V max.
· Logical level 1 : +4V ~ + 30V

Those levels are certainly not "TTL".
In hindsight I should have realised when I found that it operated at TTL levels!
I first saw the "Adam", but when I tried to find it, there wasn't an equivalent of the 6053 (I didn't see it), though most others were there, I found three or four "clones" but was unaware which was the "original"
Thanks for the info, I'll go and harass the supplier!! (with out much hope of any help)
Cheers
Leon
 

Alf Katz wrote:

This particular clone of the Advantech ADAM 4053 is not suitable for 4-30V operation at all.  The datasheet specifically says that it is suitable for dry contact (voltage free contact e.g. relay closure) or TTL voltages only.  This is not the right device for your application.  The only part of this device that can handle 30V is the power supply input.  See the data sheet at  http://www.adlinktech.com/publications/manual/ND6000/ND6053Sheet.pdf This is not the right part for your application.  I suggest the original Advantech ADAM 4053 does have 4-30V inputs.  Are you sure you were looking at the clone data sheet, not the original? CheersAlf Katz alfkatz@remove.the.obvious.ieee.orgwww.micromagic.net.au 
----- Original Message -----
Sent: Wednesday, July 30, 2003 2:33 PM
Subject: Re: [simmstick] DM74LS244WM
 Hi Andrew,
Yes the  74LS244, but some have the "default" input damaged, the documentation warns against taking that high, but they claim a "Hi i/p" is between 4 and 30V, as far as I've been able to ascertain the i/p pins are internally pulled to Vcc (5V) but they are directly connected to the 74LS244 with only a 10k pullup and a diode (cathode to I/P).
They aren't failing in the field as such, the techs are killing them at programming stage! they have to set an adress and "checksum enable".
Sometimes what ever they do happens while the " link" is in the programming position, then they kill the micro (winbond 8051?)
There is little support and documentation is limited and contradictory!
I'm disappointed as they looked like a great device for distributed I/O!
Thanks foy your answer
Cheers
Leon

Andrew Smallridge wrote:

Which device is failing in the field the 74LS244?The Nu-Dam ND6053 contains an internal power supply to regulate the incoming 10-to-30 power supply inputs to 5V. The digital inputs are TTL compatible. Putting a higher voltage on the inputs could damage it depending on how they have inplemented input protection.I suggest you look at the common ground between your logic and the ND6053. It is possible you have a ground differential which is causing the problems.Regards, Andrew
-----Original Message-----
From: Leon Blakeley [mailto:l.blakeley@cfa.vic.gov.au]
Sent: Wednesday, 30 July 2003 8:04 AM
To: Simmstick
Subject: [simmstick] DM74LS244WM
Hi All,
DM74LS244WM
Has anyone used these chips? (Octal tri-stateline driver)    According
to a Fairchild spec sheet, the max V-in should be 7V
I have a device which has digital inouts directly vonnev\cted with no
protection that I can see, the spec sheet claims input Hi of 4 - 30V !!
To my reckoning that should fry the chip!
The Device is a Nu-Dam ND6053, it is a RS485 controlled digital input
module (16 i/p's)
Yes I know a simmstik and AVR or PIC would be ideal but "management"
prefer "off the shelf"
I've put 16V (Supply) onto an input for 15 secs or so with no obvious
ill effect, however the devices are failing in the field where the I/P
is unlikely to go that hi!
Any clues?
Cheers

--
Leon Blakeley
CFA Communications
Ph (03) 92628400
Fax  (03) 92628383

PO Box 701
Mt. Waverley
3149

/_\   This message transmitted on 100% recycled electrons.

CAUTION - This message is intended for the use of the individual or
entity named above and may contain information   If you are not the
intended recipient of this message you
are hereby notified that any use, dissemination, distribution or
reproduction of this message is prohibited and that you must not take
any action in reliance on it.  If you have received this communication
in error, please notify CFA immediately and destroy the original
message.
 
 
 

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--
Leon Blakeley
CFA Communications
Ph (03) 92628400
Fax  (03) 92628383

PO Box 701
Mt. Waverley
3149

/_\   This message transmitted on 100% recycled electrons.

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entity named above and may contain information   If you are not the intended recipient of this message you
are hereby notified that any use, dissemination, distribution or
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any action in reliance on it.  If you have received this communication
in error, please notify CFA immediately and destroy the original
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--
Leon Blakeley
CFA Communications
Ph (03) 92628400
Fax  (03) 92628383

PO Box 701
Mt. Waverley
3149

/_\   This message transmitted on 100% recycled electrons.

CAUTION - This message is intended for the use of the individual or
entity named above and may contain information   If you are not the intended recipient of this message you
are hereby notified that any use, dissemination, distribution or
reproduction of this message is prohibited and that you must not take
any action in reliance on it.  If you have received this communication
in error, please notify CFA immediately and destroy the original
message.
 

Attachment: (image/gif) C:\WINDOWS\TEMP\nsmail79.gif [not stored]
Attachment: (image/gif) C:\WINDOWS\TEMP\nsmailUA.gif [not stored]
1581

From: Justin James Clayden  <justy@coolfusion.com.au>
Date: Thu Jul 31, 2003 8:45am
Subject: RE: DM74LS244WM
   
Why, may I ask, is there an advertisement attached to this (Leon's) email?
 
Justin Clayden
-----Original Message-----
From: Leon Blakeley [mailto:l.blakeley@cfa.vic.gov.au]
Sent: Tuesday, July 29, 2003 10:39 PM
To: simmstick@yahoogroups.com
Subject: Re: [simmstick] DM74LS244WM

Thanks for the reply, this is from the "manual" that was supplied when we asked that the "datasheet" be clarified.
 

¨ Input
· Channel numbers : 16
· Dry Contact:
· Logical level 0 : close to GND
· Logical level 1 : open
· Wet Contact :
· Logical level 0 : +2V max.
· Logical level 1 : +4V ~ + 30V

Those levels are certainly not "TTL".
In hindsight I should have realised when I found that it operated at TTL levels!
I first saw the "Adam", but when I tried to find it, there wasn't an equivalent of the 6053 (I didn't see it), though most others were there, I found three or four "clones" but was unaware which was the "original"
Thanks for the info, I'll go and harass the supplier!! (with out much hope of any help)
Cheers
Leon
 

Alf Katz wrote:

This particular clone of the Advantech ADAM 4053 is not suitable for 4-30V operation at all.  The datasheet specifically says that it is suitable for dry contact (voltage free contact e.g. relay closure) or TTL voltages only.  This is not the right device for your application.  The only part of this device that can handle 30V is the power supply input.  See the data sheet at  http://www.adlinktech.com/publications/manual/ND6000/ND6053Sheet.pdf This is not the right part for your application.  I suggest the original Advantech ADAM 4053 does have 4-30V inputs.  Are you sure you were looking at the clone data sheet, not the original? CheersAlf Katz alfkatz@remove.the.obvious.ieee.orgwww.micromagic.net.au 
----- Original Message -----
Sent: Wednesday, July 30, 2003 2:33 PM
Subject: Re: [simmstick] DM74LS244WM
 Hi Andrew,
Yes the  74LS244, but some have the "default" input damaged, the documentation warns against taking that high, but they claim a "Hi i/p" is between 4 and 30V, as far as I've been able to ascertain the i/p pins are internally pulled to Vcc (5V) but they are directly connected to the 74LS244 with only a 10k pullup and a diode (cathode to I/P).
They aren't failing in the field as such, the techs are killing them at programming stage! they have to set an adress and "checksum enable".
Sometimes what ever they do happens while the " link" is in the programming position, then they kill the micro (winbond 8051?)
There is little support and documentation is limited and contradictory!
I'm disappointed as they looked like a great device for distributed I/O!
Thanks foy your answer
Cheers
Leon

Andrew Smallridge wrote:

Which device is failing in the field the 74LS244?The Nu-Dam ND6053 contains an internal power supply to regulate the incoming 10-to-30 power supply inputs to 5V. The digital inputs are TTL compatible. Putting a higher voltage on the inputs could damage it depending on how they have inplemented input protection.I suggest you look at the common ground between your logic and the ND6053. It is possible you have a ground differential which is causing the problems.Regards, Andrew
-----Original Message-----
From: Leon Blakeley [mailto:l.blakeley@cfa.vic.gov.au]
Sent: Wednesday, 30 July 2003 8:04 AM
To: Simmstick
Subject: [simmstick] DM74LS244WM
Hi All,
DM74LS244WM
Has anyone used these chips? (Octal tri-stateline driver)    According
to a Fairchild spec sheet, the max V-in should be 7V
I have a device which has digital inouts directly vonnev\cted with no
protection that I can see, the spec sheet claims input Hi of 4 - 30V !!
To my reckoning that should fry the chip!
The Device is a Nu-Dam ND6053, it is a RS485 controlled digital input
module (16 i/p's)
Yes I know a simmstik and AVR or PIC would be ideal but "management"
prefer "off the shelf"
I've put 16V (Supply) onto an input for 15 secs or so with no obvious
ill effect, however the devices are failing in the field where the I/P
is unlikely to go that hi!
Any clues?
Cheers

--
Leon Blakeley
CFA Communications
Ph (03) 92628400
Fax  (03) 92628383

PO Box 701
Mt. Waverley
3149

/_\   This message transmitted on 100% recycled electrons.

CAUTION - This message is intended for the use of the individual or
entity named above and may contain information   If you are not the
intended recipient of this message you
are hereby notified that any use, dissemination, distribution or
reproduction of this message is prohibited and that you must not take
any action in reliance on it.  If you have received this communication
in error, please notify CFA immediately and destroy the original
message.
 
 
 

To Post a message, send it to:   simmstick@eGroups.com

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To Unsubscribe, send a blank message to: simmstick-unsubscribe@eGroups.com

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--
Leon Blakeley
CFA Communications
Ph (03) 92628400
Fax  (03) 92628383

PO Box 701
Mt. Waverley
3149

/_\   This message transmitted on 100% recycled electrons.

CAUTION - This message is intended for the use of the individual or
entity named above and may contain information   If you are not the intended recipient of this message you
are hereby notified that any use, dissemination, distribution or
reproduction of this message is prohibited and that you must not take
any action in reliance on it.  If you have received this communication
in error, please notify CFA immediately and destroy the original
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--
Leon Blakeley
CFA Communications
Ph (03) 92628400
Fax  (03) 92628383

PO Box 701
Mt. Waverley
3149

/_\   This message transmitted on 100% recycled electrons.

CAUTION - This message is intended for the use of the individual or
entity named above and may contain information   If you are not the intended recipient of this message you
are hereby notified that any use, dissemination, distribution or
reproduction of this message is prohibited and that you must not take
any action in reliance on it.  If you have received this communication
in error, please notify CFA immediately and destroy the original
message.
 

1582

From: Alf Katz  <alfkatz@ieee.org>
Date: Wed Jul 30, 2003 4:13pm
Subject: Re: DM74LS244WM
   
Bugger!  Your description of the input configuration sure sounds like what's on the sketchy diagram of the input on the datasheet whose link I sent you.  If that's what it's like, it's certainly not suitable for anything much above 5V.   I found the manual which indicates that you can put 0-30V into those inputs.   I wonder why their manual is different from their datasheet.  Just can't always trust suppliers, I guess.   The advantech stuff's been around for a few years (I'm not sure they didn't steal the design off someone else to begin with though). 
 
You can always achieve the same thing with the nudam by putting about a 1k series resistor and a 5V zener to ground into each of your circuits that goes above 5V.  Kinda messy though, and not much food for high source impedance signals.  Anyway, might get you outta trouble.
 
Alf Katz
 
----- Original Message -----
Sent: Wednesday, July 30, 2003 3:39 PM
Subject: Re: [simmstick] DM74LS244WM

Thanks for the reply, this is from the "manual" that was supplied when we asked that the "datasheet" be clarified.
 

¨ Input
· Channel numbers : 16
· Dry Contact:
· Logical level 0 : close to GND
· Logical level 1 : open
· Wet Contact :
· Logical level 0 : +2V max.
· Logical level 1 : +4V ~ + 30V

Those levels are certainly not "TTL".
In hindsight I should have realised when I found that it operated at TTL levels!
I first saw the "Adam", but when I tried to find it, there wasn't an equivalent of the 6053 (I didn't see it), though most others were there, I found three or four "clones" but was unaware which was the "original"
Thanks for the info, I'll go and harass the supplier!! (with out much hope of any help)
Cheers
Leon
 

Alf Katz wrote:

This particular clone of the Advantech ADAM 4053 is not suitable for 4-30V operation at all.  The datasheet specifically says that it is suitable for dry contact (voltage free contact e.g. relay closure) or TTL voltages only.  This is not the right device for your application.  The only part of this device that can handle 30V is the power supply input.  See the data sheet at  http://www.adlinktech.com/publications/manual/ND6000/ND6053Sheet.pdf This is not the right part for your application.  I suggest the original Advantech ADAM 4053 does have 4-30V inputs.  Are you sure you were looking at the clone data sheet, not the original? CheersAlf Katz alfkatz@remove.the.obvious.ieee.orgwww.micromagic.net.au 
----- Original Message -----
Sent: Wednesday, July 30, 2003 2:33 PM
Subject: Re: [simmstick] DM74LS244WM
 Hi Andrew,
Yes the  74LS244, but some have the "default" input damaged, the documentation warns against taking that high, but they claim a "Hi i/p" is between 4 and 30V, as far as I've been able to ascertain the i/p pins are internally pulled to Vcc (5V) but they are directly connected to the 74LS244 with only a 10k pullup and a diode (cathode to I/P).
They aren't failing in the field as such, the techs are killing them at programming stage! they have to set an adress and "checksum enable".
Sometimes what ever they do happens while the " link" is in the programming position, then they kill the micro (winbond 8051?)
There is little support and documentation is limited and contradictory!
I'm disappointed as they looked like a great device for distributed I/O!
Thanks foy your answer
Cheers
Leon

Andrew Smallridge wrote:

Which device is failing in the field the 74LS244?The Nu-Dam ND6053 contains an internal power supply to regulate the incoming 10-to-30 power supply inputs to 5V. The digital inputs are TTL compatible. Putting a higher voltage on the inputs could damage it depending on how they have inplemented input protection.I suggest you look at the common ground between your logic and the ND6053. It is possible you have a ground differential which is causing the problems.Regards, Andrew
-----Original Message-----
From: Leon Blakeley [mailto:l.blakeley@cfa.vic.gov.au]
Sent: Wednesday, 30 July 2003 8:04 AM
To: Simmstick
Subject: [simmstick] DM74LS244WM
Hi All,
DM74LS244WM
Has anyone used these chips? (Octal tri-stateline driver)    According
to a Fairchild spec sheet, the max V-in should be 7V
I have a device which has digital inouts directly vonnev\cted with no
protection that I can see, the spec sheet claims input Hi of 4 - 30V !!
To my reckoning that should fry the chip!
The Device is a Nu-Dam ND6053, it is a RS485 controlled digital input
module (16 i/p's)
Yes I know a simmstik and AVR or PIC would be ideal but "management"
prefer "off the shelf"
I've put 16V (Supply) onto an input for 15 secs or so with no obvious
ill effect, however the devices are failing in the field where the I/P
is unlikely to go that hi!
Any clues?
Cheers

--
Leon Blakeley
CFA Communications
Ph (03) 92628400
Fax  (03) 92628383

PO Box 701
Mt. Waverley
3149

/_\   This message transmitted on 100% recycled electrons.

CAUTION - This message is intended for the use of the individual or
entity named above and may contain information   If you are not the
intended recipient of this message you
are hereby notified that any use, dissemination, distribution or
reproduction of this message is prohibited and that you must not take
any action in reliance on it.  If you have received this communication
in error, please notify CFA immediately and destroy the original
message.
 
 
 

To Post a message, send it to:   simmstick@eGroups.com

To Unsubscribe, send a blank message to: simmstick-unsubscribe@eGroups.com

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To Post a message, send it to:   simmstick@eGroups.com

To Unsubscribe, send a blank message to: simmstick-unsubscribe@eGroups.com

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--
Leon Blakeley
CFA Communications
Ph (03) 92628400
Fax  (03) 92628383

PO Box 701
Mt. Waverley
3149

/_\   This message transmitted on 100% recycled electrons.

CAUTION - This message is intended for the use of the individual or
entity named above and may contain information   If you are not the intended recipient of this message you
are hereby notified that any use, dissemination, distribution or
reproduction of this message is prohibited and that you must not take
any action in reliance on it.  If you have received this communication
in error, please notify CFA immediately and destroy the original
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--
Leon Blakeley
CFA Communications
Ph (03) 92628400
Fax  (03) 92628383

PO Box 701
Mt. Waverley
3149

/_\   This message transmitted on 100% recycled electrons.

CAUTION - This message is intended for the use of the individual or
entity named above and may contain information   If you are not the intended recipient of this message you
are hereby notified that any use, dissemination, distribution or
reproduction of this message is prohibited and that you must not take
any action in reliance on it.  If you have received this communication
in error, please notify CFA immediately and destroy the original
message.
 

1583

From: Leon Blakeley  <l.blakeley@cfa.vic.gov.au>
Date: Wed Jul 30, 2003 5:04pm
Subject: Re: DM74LS244WM
   
Hi Justin,
you may well ask.
I can't answer  you though.
Was the ad on my original post, As I sent it I didn't read it and deleted it without looking.
If it came from here I apologise and would apreciate advice on how to avoid that in future!
Cheers
PS
I hope I haven't sent it back again!
 

Justin James Clayden wrote:

 Why, may I ask, is there an advertisement attached to this (Leon's) email?Justin Clayden
-----Original Message-----
From: Leon Blakeley [mailto:l.blakeley@cfa.vic.gov.au]
Sent: Tuesday, July 29, 2003 10:39 PM
To: simmstick@yahoogroups.com
Subject: Re: [simmstick] DM74LS244WM
 
Thanks for the reply, this is from the "manual" that was supplied when we asked that the "datasheet" be clarified.
 

¨ Input
· Channel numbers : 16
· Dry Contact:
· Logical level 0 : close to GND
· Logical level 1 : open
· Wet Contact :
· Logical level 0 : +2V max.
· Logical level 1 : +4V ~ + 30V

Those levels are certainly not "TTL".
In hindsight I should have realised when I found that it operated at TTL levels!
I first saw the "Adam", but when I tried to find it, there wasn't an equivalent of the 6053 (I didn't see it), though most others were there, I found three or four "clones" but was unaware which was the "original"
Thanks for the info, I'll go and harass the supplier!! (with out much hope of any help)
Cheers
Leon
 

Alf Katz wrote:
1584

From: Justin James Clayden  <justy@coolfusion.com.au>
Date: Fri Aug 1, 2003 3:08am
Subject: RE: DM74LS244WM
   

 
Hi Justin,
you may well ask.
I can't answer  you though.
Was the ad on my original post, As I sent it I didn't read it and deleted it without looking.
If it came from here I apologise and would apreciate advice on how to avoid that in future!
Cheers
PS
I hope I haven't sent it back again!
[Justin James Clayden] Nope, this email was attachment free- the one last time had some ad for weight loss.  By the look of your email address you don't have a hotmail account, so it's a mystery how it got there!  Sorry to be a net nazi, but my pet hate is ads!
Cheers,
Justin

Justin James Clayden wrote:

 Why, may I ask, is there an advertisement attached to this (Leon's) email?Justin Clayden
-----Original Message-----
From: Leon Blakeley [mailto:l.blakeley@cfa.vic.gov.au]
Sent: Tuesday, July 29, 2003 10:39 PM
To: simmstick@yahoogroups.com
Subject: Re: [simmstick] DM74LS244WM
 
Thanks for the reply, this is from the "manual" that was supplied when we asked that the "datasheet" be clarified.
 

¨ Input
· Channel numbers : 16
· Dry Contact:
· Logical level 0 : close to GND
· Logical level 1 : open
· Wet Contact :
· Logical level 0 : +2V max.
· Logical level 1 : +4V ~ + 30V

Those levels are certainly not "TTL".
In hindsight I should have realised when I found that it operated at TTL levels!
I first saw the "Adam", but when I tried to find it, there wasn't an equivalent of the 6053 (I didn't see it), though most others were there, I found three or four "clones" but was unaware which was the "original"
Thanks for the info, I'll go and harass the supplier!! (with out much hope of any help)
Cheers
Leon
 

Alf Katz wrote:



To Post a message, send it to:   simmstick@eGroups.com

To Unsubscribe, send a blank message to: simmstick-unsubscribe@eGroups.com

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1585

From: Don McKenzie  <simmstick_member@dontronics.com>
Date: Fri Aug 1, 2003 8:45am
Subject: PicoServio Controller.
    
1-Aug-2003  
PicoServio Controller. Applications such as industrial control,
animatronics, walking pods, mobile robots.  
http://www.dontronics.com/picobytes.html 

31-Jul-2003  
DIY KIT-165 Printer Port to 8-Relay Outputs. 
http://www.dontronics.com/diyk165.html 


-- 
Don McKenzie  E-mail:    http://www.dontronics.com/e-mail.html
              Home Page: http://www.dontronics.com

Add USB to your favorite Micro.      http://www.dontronics.com/dlp.html
The World's Largest Range of Atmel/AVR & PICmicro Hardware and Software
1586

From: cuummmonme12  <cuummmonme12@yahoo.com>
Date: Tue Aug 5, 2003 2:59am
Subject: Photos released from Adult Nudist Community
    
Ever thought about joining or even visiting an Adult Nudist Community?


We would imagine you have but some it is just not their style and that is ok but if you have the itch and wanna learn more this like will show you a different lifestyle.

http://www.internetsexads.com/landing.asp?afl=TYHO

If you have ever thought about even a vacation at a nudist community or have wondered what it was all about.  Come check out these photos and personal stories and testimonials to some of the best vacations ever.
1587

From: roddonau  <simmstick_moderator@dontronics.com>
Date: Tue Aug 5, 2003 4:53am
Subject: Re: cuummmonme12@yahoo.com
    
cuummmonme12@y...

member removed

Don...
1588

From: andy  <musica@madasafish.com>
Date: Tue Aug 5, 2003 8:08am
Subject: Re: Re: cuummmonme12@yahoo.com
    
> From: "roddonau" <simmstick_moderator@d...>

> cuummmonme12@y...
 
> member removed


Nicely phrased Don!
1589

From: maquanzhuyi  <maquanzhuyi@yahoo.com>
Date: Thu Aug 7, 2003 0:20pm
Subject: dating a single millionaire area in your city!
    
Find your date from tens of thousands of single millionaires here! 
You don't have to be a millionaire. Free registration. 

http://www.MillionaireMatch.com/i/13
1590

From: maquanzhuyi  <maquanzhuyi@yahoo.com>
Date: Thu Aug 7, 2003 0:20pm
Subject: dating a single millionaire area in your city!
    
Find your date from tens of thousands of single millionaires here! 
You don't have to be a millionaire. Free registration. 

http://www.MillionaireMatch.com/i/13
1591

From: roddonau  <simmstick_moderator@dontronics.com>
Date: Thu Aug 7, 2003 0:32pm
Subject: maquanzhuyi@yahoo.com
    
maquanzhuyi@y...

member removed

Don...
1592

From: Don McKenzie  <simmstick_member@dontronics.com>
Date: Wed Aug 13, 2003 4:59pm
Subject: PIC Programer / Analyzer.
    
13-Aug-2003  
PIC Programer / Analyzer. 
This unit is assembled and Tested. Designed to be used as a development
tool for designing software for MICROCHIP Microcontroller.

PIC Analyzer is composed of two separate parts which operate
independently:                 
ISP - Programmer for MICROCHIP Microcontrollers   
Digital analyzer with capability of sampling up to 4 MPS (Mega-samples
per second)  
http://www.dontronics.com/newhardwarefound.html 

-- 
Don McKenzie  E-mail:    http://www.dontronics.com/e-mail.html
              Home Page: http://www.dontronics.com

Add USB to your favorite Micro.      http://www.dontronics.com/dlp.html
The World's Largest Range of Atmel/AVR & PICmicro Hardware and Software
1593

From: vmk7486  <vmk7486@yahoo.com>
Date: Thu Aug 14, 2003 6:30am
Subject: Free 74ACT843 samples
    
I want some samples of 74AC843 (Fairchild latches). Somebody please 
let me know where I can get it form. It is not available in Fairchild.
Thank YOu,
Vignesh
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