|
Thanks Stefan.
Jay put up the 8840A Ver 2.3 on the KO4BB site under
the ROM Images directory. I have and will add
the image for the 8842A/AF Ver 3.1.
Any others you can find will help.
Thanks,
Tom
toggle quoted message
Show quoted text
----- Original Message -----
Sent: Wednesday, November 03, 2010 1:22
AM
Subject: Re: [TekScopes] 2440 Battery Not
Installed by Factory?
I will be glad to provide the ROM image from my 8842A. Give me a few days
to obtain it.
(Would be useful to start a new thread with this
topic).
ST
On Wed, Nov 3, 2010 at 4:50 AM, Tom Miller <tmiller@...>
wrote:
Hi Dave,
I am looking for a copy of the 8840A/AF EPROM. Jay needs
the 8842A EPROM. If you have (1) a
working model of any of these models, a way to copy the
binary data (prom programmer), and
willing to assist, it would be a great help. It seems we
are seeing a number of EPROM failures in
these meters. I have two bad units alone and I see a large
number of these showing up recently
as parts units.
The EPROM is a 2732A in a socket. It is marked U222 and is
near the AC power line filter.
The four basic models we are seeking are:
1. 8840A
2. 8840A/AF
3. 8842A
4. 8842A/AF (I have Ver 3.1) but there are
others)
There may be several versions of the firmware running
around so you may have more than one
version that is needed.
Thanks for any help you might provide.
Regards,
Tom
----- Original Message -----
Sent: Tuesday, November 02, 2010
11:29 PM
Subject: Re: [TekScopes] 2440 Battery
Not Installed by Factory?
I have two 8840As, both working after some
effort (check the archives). What do you need?
Dave Casey
Sent from my PC
----- Original Message -----
Sent: Tuesday, November 02, 2010
10:04 PM
Subject: Re: [TekScopes] 2440
Battery Not Installed by Factory?
With out the battery, the + input to the op amp would
float due to
the diode and possibly become unstable. The jumper
terminates
the op amp with the 10 k resistor. I guess we would
need to know
the serial number of the scope to use the correct
manual.
Tom
OT PS to all, Do you have or know any one with a Fluke
8840A, 8840 A/AF, 8842 A, or 8842 A/AF?
Several of us are looking for the ROM binary images
for these DMMs. They use a standard 2732A
EPROM that is socketed for the
system memory. It seems these meters may be
suffering the same
ROM issues the Tek scopes
do.
----- Original Message -----
Sent: Tuesday, November 02, 2010
10:26 PM
Subject: [TekScopes] 2440 Battery
Not Installed by Factory?
Hello Again:
I have a 2440 which appears to have a short in
place of where the battery is supposed to go. This short looks to be
installed by the factory, and the direct reason why It fails FFP. My
question is why would the factory place a short across the battery,
and how was the unit calibrated with a FFP failure?
I have looked at the technical and maintenance
manual, and it appears as though this is not an option, but should
have been standard in all models. Since the unit did come from USN
surplus, it may have been requested that this unit be placed into this
condition by the factory, as memory is a big security issue. If
that is the case, how would one clear a FFP FAIL on a product which
come from the factory with no batteries for the memory?????
Thanks
Rich
No virus found in this
message.
Checked by AVG - www.avg.com
Version: 10.0.1153 / Virus Database:
424/3233 - Release Date: 11/02/10
No virus found in this message.
Checked
by AVG - www.avg.com
Version: 10.0.1153 / Virus Database:
424/3233 - Release Date: 11/02/10
No virus found in this
message.
Checked by AVG - www.avg.com
Version: 10.0.1153 / Virus
Database: 424/3233 - Release Date: 11/02/10
|
I believe I have two different versions of the
8840A ROM. Going back to what I dealt with two years ago:
DMM #1 had a blank display, and after being powered
on would enter some sort of relay cycling tick mode. This turned out to be a
watchdog reset signal. Upon powering off, the display would light briefly as it
unblanked before the display lost power.
U202 is a mask ROM Zilog Z8, Fluke number 685438,
marked V2.3 in silkscreen.
U222 (external PROM, Intel 2732) bears Fluke part
number 728964 and V.2.3 on it's sticker.
DMM #2 has a frozen display when powered on, but
seems audibly responsive to front panel button presses.
U202 is a OTP Z86E2112PSC 8k bearing Fluke part
number 607256 and "V4.0" on it's sticker. I suspect it was replaced at some
point.
U222 is Fluke number 855692 and labeled "REV
2.5"
Swapping the U202's between the two units produced
a working DMM #1 and a failing DMM #2 with #1's old problem. DMM #1 also worked
fine with either external PROM.
The part number for the 2.5 Zilog Z8 is 854067, and
I found one on the internet for about $10.
The part that arrived was marked "Z0861108PSC R941
9311 BF JF 854067" and bore no mention of V2.5, though the parts listing from
the manual says that's what it is. I tried it in DMM #1 with the V2.3 PROM and
it wasn't happy. I then took the newer V4.0 U202 from DMM #2 and placed it in
DMM #1 with the original V2.3 external PROM and had a working DMM
#1.
I put the newly acquired V2.5 U202 into DMM #2 with
its presumably original V2.5 PROM and had the same failure mode as when I first
got it. (That failure is the display chip, U212, confirmed by swapping with from
DMM #1. As soon as it's replacement (another $10) arrives, DMM #2 will be fully
functional.)
Anyway, I don't know what's on the PROM, but it
might be obsolete and not addressed with the V4.0 firmware anyway, and since the
V4.0 chip is a OTP Z8, I presume one could duplicate
it.
So to conclude, all the code is not on U222 and
neither of my two DMMs suffered from a defective U222. However, I am happy to
pull these images and will hopefully get that done tomorrow.
I don't have the immedate means to pull the images
from the Z8s, but if someone can tell me how it's done, I'm willing to
try.
Dave Casey
Sent from my PC
toggle quoted message
Show quoted text
----- Original Message -----
Sent: Wednesday, November 03, 2010 12:38
AM
Subject: [TekScopes] Rom Images for Fluke
884xA/xx series DMM
Thanks Stefan.
Jay put up the 8840A Ver 2.3 on the KO4BB site under
the ROM Images directory. I have and will add
the image for the 8842A/AF Ver 3.1.
Any others you can find will help.
Thanks,
Tom
----- Original Message -----
Sent: Wednesday, November 03, 2010 1:22
AM
Subject: Re: [TekScopes] 2440 Battery
Not Installed by Factory?
I will be glad to provide the ROM image from my 8842A. Give me a few days
to obtain it.
(Would be useful to start a new thread with this
topic).
ST
On Wed, Nov 3, 2010 at 4:50 AM, Tom Miller <tmiller@...>
wrote:
Hi Dave,
I am looking for a copy of the 8840A/AF EPROM. Jay needs
the 8842A EPROM. If you have (1) a
working model of any of these models, a way to copy the
binary data (prom programmer), and
willing to assist, it would be a great help. It seems we
are seeing a number of EPROM failures in
these meters. I have two bad units alone and I see a
large number of these showing up recently
as parts units.
The EPROM is a 2732A in a socket. It is marked U222 and
is near the AC power line filter.
The four basic models we are seeking are:
1. 8840A
2. 8840A/AF
3. 8842A
4. 8842A/AF (I have Ver 3.1) but there are
others)
There may be several versions of the firmware running
around so you may have more than one
version that is needed.
Thanks for any help you might provide.
Regards,
Tom
----- Original Message -----
Sent: Tuesday, November 02, 2010
11:29 PM
Subject: Re: [TekScopes] 2440
Battery Not Installed by Factory?
I have two 8840As, both working after some
effort (check the archives). What do you need?
Dave Casey
Sent from my PC
----- Original Message -----
Sent: Tuesday, November 02, 2010
10:04 PM
Subject: Re: [TekScopes] 2440
Battery Not Installed by Factory?
With out the battery, the + input to the op amp
would float due to
the diode and possibly become unstable. The jumper
terminates
the op amp with the 10 k resistor. I guess we would
need to know
the serial number of the scope to use the correct
manual.
Tom
OT PS to all, Do you have or know any one with a
Fluke 8840A, 8840 A/AF, 8842 A, or 8842 A/AF?
Several of us are looking for the ROM binary images
for these DMMs. They use a standard 2732A
EPROM that is socketed for the
system memory. It seems these meters may be
suffering the same
ROM issues the Tek scopes
do.
----- Original Message -----
Sent: Tuesday, November 02,
2010 10:26 PM
Subject: [TekScopes] 2440
Battery Not Installed by Factory?
Hello Again:
I have a 2440 which appears to have a short in
place of where the battery is supposed to go. This short looks to be
installed by the factory, and the direct reason why It fails FFP. My
question is why would the factory place a short across the battery,
and how was the unit calibrated with a FFP failure?
I have looked at the technical and maintenance
manual, and it appears as though this is not an option, but should
have been standard in all models. Since the unit did come from USN
surplus, it may have been requested that this unit be placed into
this condition by the factory, as memory is a big security issue.
If that is the case, how would one clear a FFP FAIL on a
product which come from the factory with no batteries for the
memory?????
Thanks
Rich
No virus found in this
message.
Checked by AVG - www.avg.com
Version: 10.0.1153 / Virus
Database: 424/3233 - Release Date: 11/02/10
No virus found in this message.
Checked
by AVG - www.avg.com
Version: 10.0.1153 / Virus Database:
424/3233 - Release Date: 11/02/10
No virus found in this
message.
Checked by AVG - www.avg.com
Version: 10.0.1153 / Virus
Database: 424/3233 - Release Date: 11/02/10
|
toggle quoted message
Show quoted text
On Wed, Nov 3, 2010 at 6:46 AM, Dave Casey <dcasey@...> wrote:
I believe I have two different versions of the
8840A ROM. Going back to what I dealt with two years ago:
DMM #1 had a blank display, and after being powered
on would enter some sort of relay cycling tick mode. This turned out to be a
watchdog reset signal. Upon powering off, the display would light briefly as it
unblanked before the display lost power.
U202 is a mask ROM Zilog Z8, Fluke number 685438,
marked V2.3 in silkscreen.
U222 (external PROM, Intel 2732) bears Fluke part
number 728964 and V.2.3 on it's sticker.
DMM #2 has a frozen display when powered on, but
seems audibly responsive to front panel button presses.
U202 is a OTP Z86E2112PSC 8k bearing Fluke part
number 607256 and "V4.0" on it's sticker. I suspect it was replaced at some
point.
U222 is Fluke number 855692 and labeled "REV
2.5"
Swapping the U202's between the two units produced
a working DMM #1 and a failing DMM #2 with #1's old problem. DMM #1 also worked
fine with either external PROM.
The part number for the 2.5 Zilog Z8 is 854067, and
I found one on the internet for about $10.
The part that arrived was marked "Z0861108PSC R941
9311 BF JF 854067" and bore no mention of V2.5, though the parts listing from
the manual says that's what it is. I tried it in DMM #1 with the V2.3 PROM and
it wasn't happy. I then took the newer V4.0 U202 from DMM #2 and placed it in
DMM #1 with the original V2.3 external PROM and had a working DMM
#1.
I put the newly acquired V2.5 U202 into DMM #2 with
its presumably original V2.5 PROM and had the same failure mode as when I first
got it. (That failure is the display chip, U212, confirmed by swapping with from
DMM #1. As soon as it's replacement (another $10) arrives, DMM #2 will be fully
functional.)
Anyway, I don't know what's on the PROM, but it
might be obsolete and not addressed with the V4.0 firmware anyway, and since the
V4.0 chip is a OTP Z8, I presume one could duplicate
it.
So to conclude, all the code is not on U222 and
neither of my two DMMs suffered from a defective U222. However, I am happy to
pull these images and will hopefully get that done tomorrow.
I don't have the immedate means to pull the images
from the Z8s, but if someone can tell me how it's done, I'm willing to
try.
Dave Casey
Sent from my PC
----- Original Message -----
Sent: Wednesday, November 03, 2010 12:38
AM
Subject: [TekScopes] Rom Images for Fluke
884xA/xx series DMM
Thanks Stefan.
Jay put up the 8840A Ver 2.3 on the KO4BB site under
the ROM Images directory. I have and will add
the image for the 8842A/AF Ver 3.1.
Any others you can find will help.
Thanks,
Tom
----- Original Message -----
Sent: Wednesday, November 03, 2010 1:22
AM
Subject: Re: [TekScopes] 2440 Battery
Not Installed by Factory?
I will be glad to provide the ROM image from my 8842A. Give me a few days
to obtain it.
(Would be useful to start a new thread with this
topic).
ST
On Wed, Nov 3, 2010 at 4:50 AM, Tom Miller <tmiller@...>
wrote:
Hi Dave,
I am looking for a copy of the 8840A/AF EPROM. Jay needs
the 8842A EPROM. If you have (1) a
working model of any of these models, a way to copy the
binary data (prom programmer), and
willing to assist, it would be a great help. It seems we
are seeing a number of EPROM failures in
these meters. I have two bad units alone and I see a
large number of these showing up recently
as parts units.
The EPROM is a 2732A in a socket. It is marked U222 and
is near the AC power line filter.
The four basic models we are seeking are:
1. 8840A
2. 8840A/AF
3. 8842A
4. 8842A/AF (I have Ver 3.1) but there are
others)
There may be several versions of the firmware running
around so you may have more than one
version that is needed.
Thanks for any help you might provide.
Regards,
Tom
----- Original Message -----
Sent: Tuesday, November 02, 2010
11:29 PM
Subject: Re: [TekScopes] 2440
Battery Not Installed by Factory?
I have two 8840As, both working after some
effort (check the archives). What do you need?
Dave Casey
Sent from my PC
----- Original Message -----
Sent: Tuesday, November 02, 2010
10:04 PM
Subject: Re: [TekScopes] 2440
Battery Not Installed by Factory?
With out the battery, the + input to the op amp
would float due to
the diode and possibly become unstable. The jumper
terminates
the op amp with the 10 k resistor. I guess we would
need to know
the serial number of the scope to use the correct
manual.
Tom
OT PS to all, Do you have or know any one with a
Fluke 8840A, 8840 A/AF, 8842 A, or 8842 A/AF?
Several of us are looking for the ROM binary images
for these DMMs. They use a standard 2732A
EPROM that is socketed for the
system memory. It seems these meters may be
suffering the same
ROM issues the Tek scopes
do.
----- Original Message -----
Sent: Tuesday, November 02,
2010 10:26 PM
Subject: [TekScopes] 2440
Battery Not Installed by Factory?
Hello Again:
I have a 2440 which appears to have a short in
place of where the battery is supposed to go. This short looks to be
installed by the factory, and the direct reason why It fails FFP. My
question is why would the factory place a short across the battery,
and how was the unit calibrated with a FFP failure?
I have looked at the technical and maintenance
manual, and it appears as though this is not an option, but should
have been standard in all models. Since the unit did come from USN
surplus, it may have been requested that this unit be placed into
this condition by the factory, as memory is a big security issue.
If that is the case, how would one clear a FFP FAIL on a
product which come from the factory with no batteries for the
memory?????
Thanks
Rich
No virus found in this
message.
Checked by AVG - www.avg.com
Version: 10.0.1153 / Virus
Database: 424/3233 - Release Date: 11/02/10
No virus found in this message.
Checked
by AVG - www.avg.com
Version: 10.0.1153 / Virus Database:
424/3233 - Release Date: 11/02/10
No virus found in this
message.
Checked by AVG - www.avg.com
Version: 10.0.1153 / Virus
Database: 424/3233 - Release Date: 11/02/10
|
Hi Tom FWIW, since I have a Z8 with the piggyback 2732 EPROM V2.3 for the 8840A, I'll get the binary and post it to KO4BB tomorrow. I would assume that the code would fit in the OTP device. Still wondering whether a set of devices moved from a 8840A would work in a 8842A... I suspect not, as when I do this my 8842A reads 100X higher than it should (1 volt = 100 volts), and resistance measurements are screwed up as well. I suppose there could be something else wrong with the meter, but I haven't taken a closer look thinking that something is wrong with the firmware revisions. Jay --- In TekScopes@..., "Tom Miller" <tmiller@...> wrote:
Thanks Stefan.
Jay put up the 8840A Ver 2.3 on the KO4BB site under the ROM Images directory. I have and will add
the image for the 8842A/AF Ver 3.1.
Any others you can find will help.
Thanks,
Tom
[snip]
|
Just looking at the Z8 datasheet, there is a way to read back
the otp ROM. If the
protect function has not been activated.
Do you have one to read?
I did a bit of comparing the code in the image that jayW sent
me. The last 14 bytes match but
there are many differences.
Dave, where did you find the parts? Any more
available?
Regards,
Tom
toggle quoted message
Show quoted text
----- Original Message -----
Sent: Wednesday, November 03, 2010 2:06
AM
Subject: Re: [TekScopes] Rom Images for
Fluke 884xA/xx series DMM
Maybe I can read the Zilog witht the Beeprog?
<http://www.elnec.com/sw/dev_html/zilog_dev.htm>
ST
On Wed, Nov 3, 2010 at 6:46 AM, Dave Casey <dcasey@...>
wrote:
I believe I have two different versions of the
8840A ROM. Going back to what I dealt with two years ago:
DMM #1 had a blank display, and after being
powered on would enter some sort of relay cycling tick mode. This turned out
to be a watchdog reset signal. Upon powering off, the display would light
briefly as it unblanked before the display lost power.
U202 is a mask ROM Zilog Z8, Fluke number
685438, marked V2.3 in silkscreen.
U222 (external PROM, Intel 2732) bears Fluke
part number 728964 and V.2.3 on it's sticker.
DMM #2 has a frozen display when powered on,
but seems audibly responsive to front panel button presses.
U202 is a OTP Z86E2112PSC 8k bearing Fluke part
number 607256 and "V4.0" on it's sticker. I suspect it was replaced at some
point.
U222 is Fluke number 855692 and labeled "REV
2.5"
Swapping the U202's between the two units
produced a working DMM #1 and a failing DMM #2 with #1's old problem. DMM #1
also worked fine with either external PROM.
The part number for the 2.5 Zilog Z8 is 854067,
and I found one on the internet for about $10.
The part that arrived was marked "Z0861108PSC
R941 9311 BF JF 854067" and bore no mention of V2.5, though the parts
listing from the manual says that's what it is. I tried it in DMM #1 with
the V2.3 PROM and it wasn't happy. I then took the newer V4.0 U202 from DMM
#2 and placed it in DMM #1 with the original V2.3 external PROM and had a
working DMM #1.
I put the newly acquired V2.5 U202 into DMM #2
with its presumably original V2.5 PROM and had the same failure mode as when
I first got it. (That failure is the display chip, U212, confirmed by
swapping with from DMM #1. As soon as it's replacement (another $10)
arrives, DMM #2 will be fully functional.)
Anyway, I don't know what's on the PROM, but it
might be obsolete and not addressed with the V4.0 firmware anyway, and since
the V4.0 chip is a OTP Z8, I presume one could duplicate
it.
So to conclude, all the code is not on U222 and
neither of my two DMMs suffered from a defective U222. However, I am happy
to pull these images and will hopefully get that done tomorrow.
I don't have the immedate means to pull the
images from the Z8s, but if someone can tell me how it's done, I'm willing
to try.
Dave Casey
Sent from my PC
----- Original Message -----
Sent: Wednesday, November 03, 2010
12:38 AM
Subject: [TekScopes] Rom Images for
Fluke 884xA/xx series DMM
Thanks Stefan.
Jay put up the 8840A Ver 2.3 on the KO4BB site under
the ROM Images directory. I have and will add
the image for the 8842A/AF Ver 3.1.
Any others you can find will help.
Thanks,
Tom
----- Original Message -----
Sent: Wednesday, November 03, 2010
1:22 AM
Subject: Re: [TekScopes] 2440
Battery Not Installed by Factory?
I will be glad to provide the ROM image from my 8842A. Give me a few
days to obtain it.
(Would be useful to start a new thread with this
topic).
ST
On Wed, Nov 3, 2010 at 4:50 AM, Tom Miller <tmiller@...> wrote:
Hi Dave,
I am looking for a copy of the 8840A/AF EPROM. Jay
needs the 8842A EPROM. If you have (1) a
working model of any of these models, a way to copy
the binary data (prom programmer), and
willing to assist, it would be a great help. It
seems we are seeing a number of EPROM failures in
these meters. I have two bad units alone and I see a
large number of these showing up recently
as parts units.
The EPROM is a 2732A in a socket. It is marked U222
and is near the AC power line filter.
The four basic models we are seeking
are:
1. 8840A
2. 8840A/AF
3. 8842A
4. 8842A/AF (I have Ver 3.1) but there are
others)
There may be several versions of the firmware
running around so you may have more than one
version that is needed.
Thanks for any help you might provide.
Regards,
Tom
----- Original Message -----
Sent: Tuesday, November 02,
2010 11:29 PM
Subject: Re: [TekScopes] 2440
Battery Not Installed by Factory?
I have two 8840As, both working after
some effort (check the archives). What do you need?
Dave Casey
Sent from my PC
----- Original Message -----
Sent: Tuesday, November 02,
2010 10:04 PM
Subject: Re: [TekScopes] 2440
Battery Not Installed by Factory?
With out the battery, the + input to the op amp
would float due to
the diode and possibly become unstable. The
jumper terminates
the op amp with the 10 k resistor. I guess we
would need to know
the serial number of the scope to use the
correct manual.
Tom
OT PS to all, Do you have or know any one with a
Fluke 8840A, 8840 A/AF, 8842 A, or 8842 A/AF?
Several of us are looking for the ROM binary
images for these DMMs. They use a standard 2732A
EPROM that is socketed for
the system memory. It seems these meters may
be suffering the same
ROM issues the Tek scopes
do.
----- Original Message -----
Sent: Tuesday, November 02,
2010 10:26 PM
Subject: [TekScopes] 2440
Battery Not Installed by Factory?
Hello Again:
I have a 2440 which appears to have a short
in place of where the battery is supposed to go. This short
looks to be installed by the factory, and the direct reason why
It fails FFP My question is why would the factory place a short
across the battery, and how was the unit calibrated with a FFP
failure?
I have looked at the technical and
maintenance manual, and it appears as though this is not an
option, but should have been standard in all models. Since the
unit did come from USN surplus, it may have been requested that
this unit be placed into this condition by the factory, as
memory is a big security issue If that is the case, how
would one clear a FFP FAIL on a product which come from the
factory with no batteries for the memory?????
Thanks
Rich
No virus found in this
message.
Checked by AVG - www.avg.com
Version: 10.0.1153 / Virus
Database: 424/3233 - Release Date: 11/02/10
No virus found in this
message.
Checked by AVG - www.avg.com
Version: 10.0.1153 / Virus
Database: 424/3233 - Release Date:
11/02/10
No virus found in this message.
Checked
by AVG - www.avg.com
Version: 10.0.1153 / Virus Database:
424/3233 - Release Date: 11/02/10
No virus found in this
message.
Checked by AVG - www.avg.com
Version: 10.0.1153 / Virus
Database: 424/3233 - Release Date: 11/02/10
|
I pulled my two versions of U222 this evening, one
being 2.3 and the other 2.5
I will send these to Bruce Lane and to Tom Miller
and they can be put wherever.
While I had things apart, I did confirm that the
version 4.0 OTP Z8 does not need U222 to run the DMM.
These chips do appear to be specific to the 8840A
as they even have "8840" on the labels.
Dave Casey
Sent from my PC
toggle quoted message
Show quoted text
----- Original Message -----
Sent: Wednesday, November 03, 2010 10:02
AM
Subject: [TekScopes] Re: Rom Images for
Fluke 884xA/xx series DMM
Hi Tom
FWIW, since I have a Z8 with the piggyback 2732 EPROM V2.3
for the 8840A, I'll get the binary and post it to KO4BB tomorrow. I would
assume that the code would fit in the OTP device.
Still wondering
whether a set of devices moved from a 8840A would work in a 8842A... I suspect
not, as when I do this my 8842A reads 100X higher than it should (1 volt = 100
volts), and resistance measurements are screwed up as well. I suppose there
could be something else wrong with the meter, but I haven't taken a closer
look thinking that something is wrong with the firmware
revisions.
Jay
--- In TekScopes@..., "Tom
Miller" wrote:
>
> Thanks Stefan.
>
> Jay put up the 8840A Ver 2.3 on the KO4BB site under the ROM Images
directory. I have and will add
> the image for the 8842A/AF Ver
3.1.
>
> Any others you can find will help.
>
>
> Thanks,
> Tom
>
[snip]
|
I bought it used from Ucite two years ago. It
appears to be the only one they had.
Dave Casey
Sent from my PC
toggle quoted message
Show quoted text
----- Original Message -----
Sent: Wednesday, November 03, 2010 10:29
PM
Subject: Re: [TekScopes] Rom Images for
Fluke 884xA/xx series DMM
Just looking at the Z8 datasheet, there is a way to read
back the otp ROM. If the
protect function has not been activated.
Do you have one to read?
I did a bit of comparing the code in the image that jayW
sent me. The last 14 bytes match but
there are many differences.
Dave, where did you find the parts? Any more
available?
Regards,
Tom
----- Original Message -----
Sent: Wednesday, November 03, 2010 2:06
AM
Subject: Re: [TekScopes] Rom Images for
Fluke 884xA/xx series DMM
Maybe I can read the Zilog witht the Beeprog?
<http://www.elnec.com/sw/dev_html/zilog_dev.htm>
ST
On Wed, Nov 3, 2010 at 6:46 AM, Dave Casey <dcasey@...>
wrote:
I believe I have two different versions of
the 8840A ROM. Going back to what I dealt with two years
ago:
DMM #1 had a blank display, and after being
powered on would enter some sort of relay cycling tick mode. This turned
out to be a watchdog reset signal. Upon powering off, the display would
light briefly as it unblanked before the display lost power.
U202 is a mask ROM Zilog Z8, Fluke number
685438, marked V2.3 in silkscreen.
U222 (external PROM, Intel 2732) bears Fluke
part number 728964 and V.2.3 on it's sticker.
DMM #2 has a frozen display when powered on,
but seems audibly responsive to front panel button presses.
U202 is a OTP Z86E2112PSC 8k bearing Fluke
part number 607256 and "V4.0" on it's sticker. I suspect it was replaced
at some point.
U222 is Fluke number 855692 and labeled "REV
2.5"
Swapping the U202's between the two units
produced a working DMM #1 and a failing DMM #2 with #1's old problem. DMM
#1 also worked fine with either external PROM.
The part number for the 2.5 Zilog Z8 is
854067, and I found one on the internet for about $10.
The part that arrived was marked "Z0861108PSC
R941 9311 BF JF 854067" and bore no mention of V2.5, though the parts
listing from the manual says that's what it is. I tried it in DMM #1 with
the V2.3 PROM and it wasn't happy. I then took the newer V4.0 U202 from
DMM #2 and placed it in DMM #1 with the original V2.3 external PROM and
had a working DMM #1.
I put the newly acquired V2.5 U202 into DMM
#2 with its presumably original V2.5 PROM and had the same failure mode as
when I first got it. (That failure is the display chip, U212, confirmed by
swapping with from DMM #1. As soon as it's replacement (another $10)
arrives, DMM #2 will be fully functional.)
Anyway, I don't know what's on the PROM, but
it might be obsolete and not addressed with the V4.0 firmware anyway, and
since the V4.0 chip is a OTP Z8, I presume one could duplicate
it.
So to conclude, all the code is not on U222
and neither of my two DMMs suffered from a defective U222. However, I am
happy to pull these images and will hopefully get that done
tomorrow.
I don't have the immedate means to pull the
images from the Z8s, but if someone can tell me how it's done, I'm willing
to try.
Dave Casey
Sent from my PC
----- Original Message -----
Sent: Wednesday, November 03, 2010
12:38 AM
Subject: [TekScopes] Rom Images for
Fluke 884xA/xx series DMM
Thanks Stefan.
Jay put up the 8840A Ver 2.3 on the KO4BB site under
the ROM Images directory. I have and will add
the image for the 8842A/AF Ver 3.1.
Any others you can find will help.
Thanks,
Tom
----- Original Message -----
Sent: Wednesday, November 03,
2010 1:22 AM
Subject: Re: [TekScopes] 2440
Battery Not Installed by Factory?
I will be glad to provide the ROM image from my 8842A. Give me a
few days to obtain it.
(Would be useful to start a new thread with
this topic).
ST
On Wed, Nov 3, 2010 at 4:50 AM, Tom Miller
<tmiller@...> wrote:
Hi Dave,
I am looking for a copy of the 8840A/AF EPROM. Jay
needs the 8842A EPROM. If you have (1) a
working model of any of these models, a way to
copy the binary data (prom programmer), and
willing to assist, it would be a great help. It
seems we are seeing a number of EPROM failures in
these meters. I have two bad units alone and I see
a large number of these showing up recently
as parts units.
The EPROM is a 2732A in a socket. It is marked
U222 and is near the AC power line filter.
The four basic models we are seeking
are:
1. 8840A
2. 8840A/AF
3. 8842A
4. 8842A/AF (I have Ver 3.1) but there are
others)
There may be several versions of the firmware
running around so you may have more than one
version that is needed.
Thanks for any help you might provide.
Regards,
Tom
----- Original Message -----
Sent: Tuesday, November 02,
2010 11:29 PM
Subject: Re: [TekScopes] 2440
Battery Not Installed by Factory?
I have two 8840As, both working after
some effort (check the archives). What do you need?
Dave Casey
Sent from my PC
----- Original Message -----
Sent: Tuesday, November 02,
2010 10:04 PM
Subject: Re: [TekScopes]
2440 Battery Not Installed by Factory?
With out the battery, the + input to the op
amp would float due to
the diode and possibly become unstable. The
jumper terminates
the op amp with the 10 k resistor. I guess we
would need to know
the serial number of the scope to use the
correct manual.
Tom
OT PS to all, Do you have or know any one with
a Fluke 8840A, 8840 A/AF, 8842 A, or 8842 A/AF?
Several of us are looking for the ROM binary
images for these DMMs. They use a standard 2732A
EPROM that is socketed for
the system memory. It seems these meters may
be suffering the same
ROM issues the Tek scopes
do.
----- Original Message -----
Sent: Tuesday, November
02, 2010 10:26 PM
Subject: [TekScopes] 2440
Battery Not Installed by Factory?
Hello Again:
I have a 2440 which appears to have a short
in place of where the battery is supposed to go. This short
looks to be installed by the factory, and the direct reason
why It fails FFP My question is why would the factory place a
short across the battery, and how was the unit calibrated with
a FFP failure?
I have looked at the technical and
maintenance manual, and it appears as though this is not an
option, but should have been standard in all models. Since the
unit did come from USN surplus, it may have been requested
that this unit be placed into this condition by the factory,
as memory is a big security issue If that is the case,
how would one clear a FFP FAIL on a product which come from
the factory with no batteries for the memory?????
Thanks
Rich
No virus found in this
message.
Checked by AVG - www.avg.com
Version: 10.0.1153 / Virus
Database: 424/3233 - Release Date: 11/02/10
No virus found in this
message.
Checked by AVG - www.avg.com
Version: 10.0.1153 / Virus
Database: 424/3233 - Release Date:
11/02/10
No virus found in this
message.
Checked by AVG - www.avg.com
Version: 10.0.1153 / Virus Database:
424/3233 - Release Date: 11/02/10
No virus found in this
message.
Checked by AVG - www.avg.com
Version: 10.0.1153 / Virus
Database: 424/3233 - Release Date: 11/02/10
|
Hi Jay, i have a similar
problems with my Fluke 8840, my z8 (Z0861108SPC) romles micro is dead, i have
Data I/O, BP micro, ALL-11 programmers, and i tryed to tead one like 86E21,
but without any success, from Ebay i bought Z8613RS microcontroller
with piggyback eeprom, but i haven't binary dump for programming, please if you
can read your, and upload somewhere.
p.s. i think that no way to read
Z08611 with stadart programmer, but 86E2112 can be read.
Best regards.
NikiG
toggle quoted message
Show quoted text
----- Original Message -----
Sent: Wednesday, November 03, 2010 5:02
PM
Subject: [TekScopes] Re: Rom Images for
Fluke 884xA/xx series DMM
Hi Tom
FWIW, since I have a Z8 with the piggyback 2732 EPROM V2.3
for the 8840A, I'll get the binary and post it to KO4BB tomorrow. I would
assume that the code would fit in the OTP device.
Still wondering
whether a set of devices moved from a 8840A would work in a 8842A... I suspect
not, as when I do this my 8842A reads 100X higher than it should (1 volt = 100
volts), and resistance measurements are screwed up as well. I suppose there
could be something else wrong with the meter, but I haven't taken a closer
look thinking that something is wrong with the firmware
revisions.
Jay
--- In TekScopes@..., "Tom
Miller" <tmiller@...> wrote:
>
> Thanks Stefan.
>
> Jay put up the 8840A Ver 2.3 on the KO4BB site under the ROM Images
directory. I have and will add
> the image for the 8842A/AF Ver
3.1.
>
> Any others you can find will help.
>
>
> Thanks,
> Tom
>
[snip]
|
Hi NikiG,
I posted it on KO4BB, but it is not yet available for download. I also sent a copy to Tom Miller, and he posted the file on the Yahoo group Fluke_DMM The file is called 8840A_ROMSET.zip
If you join the group, you should be able to download. Let me know how you make out.
Jay
toggle quoted message
Show quoted text
--- In TekScopes@..., "Niki G." <trds.co@...> wrote:
Hi Jay, i have a similar problems with my Fluke 8840, my z8 (Z0861108SPC) romles micro is dead, i have Data I/O, BP micro, ALL-11 programmers, and i tryed to tead one like 86E21, but without any success, from Ebay i bought Z8613RS microcontroller with piggyback eeprom, but i haven't binary dump for programming, please if you can read your, and upload somewhere.
p.s. i think that no way to read Z08611 with stadart programmer, but 86E2112 can be read.
Best regards.
NikiG
----- Original Message -----
From: jayw_comark
To: TekScopes@...
Sent: Wednesday, November 03, 2010 5:02 PM
Subject: [TekScopes] Re: Rom Images for Fluke 884xA/xx series DMM
Hi Tom
FWIW, since I have a Z8 with the piggyback 2732 EPROM V2.3 for the 8840A, I'll get the binary and post it to KO4BB tomorrow. I would assume that the code would fit in the OTP device.
Still wondering whether a set of devices moved from a 8840A would work in a 8842A... I suspect not, as when I do this my 8842A reads 100X higher than it should (1 volt = 100 volts), and resistance measurements are screwed up as well. I suppose there could be something else wrong with the meter, but I haven't taken a closer look thinking that something is wrong with the firmware revisions.
Jay
--- In TekScopes@..., "Tom Miller" <tmiller@> wrote:
>
> Thanks Stefan.
>
> Jay put up the 8840A Ver 2.3 on the KO4BB site under the ROM Images directory. I have and will add
> the image for the 8842A/AF Ver 3.1.
>
> Any others you can find will help.
>
>
> Thanks,
> Tom
>
[snip]
|
You could always post it on ebaman as well
Tomas Larsson
www.ebaman.com
toggle quoted message
Show quoted text
-----Original Message----- From: TekScopes@... [mailto:TekScopes@...] On Behalf Of jayw_comark Sent: Saturday, November 06, 2010 11:39 AM To: TekScopes@... Subject: [TekScopes] Re: Rom Images for Fluke 884xA/xx series DMM Hi NikiG, I posted it on KO4BB, but it is not yet available for download. I also sent a copy to Tom Miller, and he posted the file on the Yahoo group Fluke_DMM The file is called 8840A_ROMSET.zip If you join the group, you should be able to download. Let me know how you make out. Jay --- In TekScopes@..., "Niki G." <trds.co@...> wrote:
Hi Jay, i have a similar problems with my Fluke 8840, my z8 (Z0861108SPC)
romles micro is dead, i have Data I/O, BP micro, ALL-11 programmers, and i tryed to tead one like 86E21, but without any success, from Ebay i bought Z8613RS microcontroller with piggyback eeprom, but i haven't binary dump for programming, please if you can read your, and upload somewhere.
p.s. i think that no way to read Z08611 with stadart programmer, but
86E2112 can be read.
Best regards.
NikiG
----- Original Message -----
From: jayw_comark
To: TekScopes@...
Sent: Wednesday, November 03, 2010 5:02 PM
Subject: [TekScopes] Re: Rom Images for Fluke 884xA/xx series DMM
Hi Tom
FWIW, since I have a Z8 with the piggyback 2732 EPROM V2.3 for the
8840A, I'll get the binary and post it to KO4BB tomorrow. I would assume that the code would fit in the OTP device.
Still wondering whether a set of devices moved from a 8840A would work
in a 8842A... I suspect not, as when I do this my 8842A reads 100X higher than it should (1 volt = 100 volts), and resistance measurements are screwed up as well. I suppose there could be something else wrong with the meter, but I haven't taken a closer look thinking that something is wrong with the firmware revisions.
Jay
--- In TekScopes@..., "Tom Miller" <tmiller@> wrote:
>
> Thanks Stefan.
>
> Jay put up the 8840A Ver 2.3 on the KO4BB site under the ROM Images
directory. I have and will add > the image for the 8842A/AF Ver 3.1.
>
> Any others you can find will help.
>
>
> Thanks,
> Tom
>
[snip]
------------------------------------ Yahoo! Groups Links
|
Hi Jay, thanks a lot, i downloaded
files, i'll program EPROM's and will give you result soon.
Best regards.
NikiG
toggle quoted message
Show quoted text
----- Original Message -----
Sent: Saturday, November 06, 2010 12:39
PM
Subject: [TekScopes] Re: Rom Images for
Fluke 884xA/xx series DMM
Hi NikiG,
I posted it on KO4BB, but it is not yet available for
download. I also sent a copy to Tom Miller, and he posted the file on the
Yahoo group Fluke_DMM The file is called 8840A_ROMSET.zip
If you join
the group, you should be able to download. Let me know how you make
out.
Jay
--- In TekScopes@..., "Niki
G." wrote:
>
> Hi Jay, i have a similar
problems with my Fluke 8840, my z8 (Z0861108SPC) romles micro is dead, i have
Data I/O, BP micro, ALL-11 programmers, and i tryed to tead one like 86E21,
but without any success, from Ebay i bought Z8613RS microcontroller with
piggyback eeprom, but i haven't binary dump for programming, please if you can
read your, and upload somewhere.
>
> p.s. i think that no way to
read Z08611 with stadart programmer, but 86E2112 can be read.
>
>
Best regards.
> NikiG
>
>
> ----- Original Message
-----
> From: jayw_comark
> To: TekScopes@...
> Sent: Wednesday, November 03, 2010 5:02 PM
> Subject:
[TekScopes] Re: Rom Images for Fluke 884xA/xx series DMM
>
>
>
> Hi Tom
>
> FWIW, since I have a Z8 with the
piggyback 2732 EPROM V2.3 for the 8840A, I'll get the binary and post it to
KO4BB tomorrow. I would assume that the code would fit in the OTP
device.
>
> Still wondering whether a set of devices moved from a
8840A would work in a 8842A... I suspect not, as when I do this my 8842A reads
100X higher than it should (1 volt = 100 volts), and resistance measurements
are screwed up as well. I suppose there could be something else wrong with the
meter, but I haven't taken a closer look thinking that something is wrong with
the firmware revisions.
>
> Jay
>
> --- In TekScopes@..., "Tom
Miller" wrote:
> >
> > Thanks
Stefan.
> >
> > Jay put up the 8840A Ver 2.3 on the KO4BB
site under the ROM Images directory. I have and will add
> > the
image for the 8842A/AF Ver 3.1.
> >
> > Any others you can
find will help.
> >
> >
> > Thanks,
> >
Tom
> >
> [snip]
>
|
HI Jay, i'm sorry for big delay, but
finaly i receive my Z8613 mcu and programmed eproms with your dumps V2.3, so all
is ok and my 8840A work fine (thanks a lot again), also i tryed to read Z8
(now working mcu) but without success.
Besr regards.
NikiG
toggle quoted message
Show quoted text
----- Original Message -----
Sent: Saturday, November 06, 2010 12:39
PM
Subject: [TekScopes] Re: Rom Images for
Fluke 884xA/xx series DMM
Hi NikiG,
I posted it on KO4BB, but it is not yet available for
download. I also sent a copy to Tom Miller, and he posted the file on the
Yahoo group Fluke_DMM The file is called 8840A_ROMSET.zip
If you join
the group, you should be able to download. Let me know how you make
out.
Jay
--- In TekScopes@..., "Niki
G." wrote:
>
> Hi Jay, i have a similar
problems with my Fluke 8840, my z8 (Z0861108SPC) romles micro is dead, i have
Data I/O, BP micro, ALL-11 programmers, and i tryed to tead one like 86E21,
but without any success, from Ebay i bought Z8613RS microcontroller with
piggyback eeprom, but i haven't binary dump for programming, please if you can
read your, and upload somewhere.
>
> p.s. i think that no way to
read Z08611 with stadart programmer, but 86E2112 can be read.
>
>
Best regards.
> NikiG
>
>
> ----- Original Message
-----
> From: jayw_comark
> To: TekScopes@...
> Sent: Wednesday, November 03, 2010 5:02 PM
> Subject:
[TekScopes] Re: Rom Images for Fluke 884xA/xx series DMM
>
>
>
> Hi Tom
>
> FWIW, since I have a Z8 with the
piggyback 2732 EPROM V2.3 for the 8840A, I'll get the binary and post it to
KO4BB tomorrow. I would assume that the code would fit in the OTP
device.
>
> Still wondering whether a set of devices moved from a
8840A would work in a 8842A... I suspect not, as when I do this my 8842A reads
100X higher than it should (1 volt = 100 volts), and resistance measurements
are screwed up as well. I suppose there could be something else wrong with the
meter, but I haven't taken a closer look thinking that something is wrong with
the firmware revisions.
>
> Jay
>
> --- In TekScopes@..., "Tom
Miller" wrote:
> >
> > Thanks
Stefan.
> >
> > Jay put up the 8840A Ver 2.3 on the KO4BB
site under the ROM Images directory. I have and will add
> > the
image for the 8842A/AF Ver 3.1.
> >
> > Any others you can
find will help.
> >
> >
> > Thanks,
> >
Tom
> >
> [snip]
>
|
Hi Niki, Glad to have been of some assistance, and congrats on your repair. Jay --- In TekScopes@..., "Niki G." <trds.co@...> wrote:
HI Jay, i'm sorry for big delay, but finaly i receive my Z8613 mcu and programmed eproms with your dumps V2.3, so all is ok and my 8840A work fine (thanks a lot again), also i tryed to read Z8 (now working mcu) but without success.
Besr regards.
NikiG
[snip]
|
