Empathy List Archives

DC

David C. Partridge

Mon, Jan 28, 2013 3:30 PM

Hi everyone,

I've got a problem with a 7071 which is beeping at me about twice a second, and also flashes the COMPUTE and DIG FILT LEDs on the front panel at the same rate.

Does anyone recognise what the fault is likely to be?

Cheers
Dave

Hi everyone, I've got a problem with a 7071 which is beeping at me about twice a second, and also flashes the COMPUTE and DIG FILT LEDs on the front panel at the same rate. Does anyone recognise what the fault is likely to be? Cheers Dave

JL

J. L. Trantham

Tue, Jan 29, 2013 3:13 AM

I wonder if it might mean multiple 'stuck' buttons on the front panel. Any
way to check that? Perhaps disconnecting the front panel and reconnecting?
Perhaps making measurements on the front panel itself?

Good luck.

Joe

-----Original Message-----
From: volt-nuts-bounces@febo.com [mailto:volt-nuts-bounces@febo.com] On
Behalf Of David C. Partridge
Sent: Monday, January 28, 2013 9:30 AM
To: 'Discussion of precise voltage measurement'
Subject: [volt-nuts] Solartron 7071 beeping about twice a second

Hi everyone,

I've got a problem with a 7071 which is beeping at me about twice a second,
and also flashes the COMPUTE and DIG FILT LEDs on the front panel at the
same rate.

Does anyone recognise what the fault is likely to be?

Cheers
Dave

volt-nuts mailing list -- volt-nuts@febo.com To unsubscribe, go to
https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts
and follow the instructions there.

I wonder if it might mean multiple 'stuck' buttons on the front panel. Any way to check that? Perhaps disconnecting the front panel and reconnecting? Perhaps making measurements on the front panel itself? Good luck. Joe -----Original Message----- From: volt-nuts-bounces@febo.com [mailto:volt-nuts-bounces@febo.com] On Behalf Of David C. Partridge Sent: Monday, January 28, 2013 9:30 AM To: 'Discussion of precise voltage measurement' Subject: [volt-nuts] Solartron 7071 beeping about twice a second Hi everyone, I've got a problem with a 7071 which is beeping at me about twice a second, and also flashes the COMPUTE and DIG FILT LEDs on the front panel at the same rate. Does anyone recognise what the fault is likely to be? Cheers Dave _______________________________________________ volt-nuts mailing list -- volt-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions there.

DC

David C. Partridge

Wed, Jan 30, 2013 5:14 PM

Joe,

Looks like you win the prize for remote diagnosis! Disconnecting PL2 which goes to the keyboard, and it all comes up nicely.

What I can do about that though I am not at all sure ... :(

Dave
-----Original Message-----
From: volt-nuts-bounces@febo.com [mailto:volt-nuts-bounces@febo.com] On Behalf Of J. L. Trantham
Sent: 29 January 2013 03:14
To: 'Discussion of precise voltage measurement'
Subject: Re: [volt-nuts] Solartron 7071 beeping about twice a second

I wonder if it might mean multiple 'stuck' buttons on the front panel. Any way to check that? Perhaps disconnecting the front panel and reconnecting?
Perhaps making measurements on the front panel itself?

Good luck.

Joe

-----Original Message-----
From: volt-nuts-bounces@febo.com [mailto:volt-nuts-bounces@febo.com] On Behalf Of David C. Partridge
Sent: Monday, January 28, 2013 9:30 AM
To: 'Discussion of precise voltage measurement'
Subject: [volt-nuts] Solartron 7071 beeping about twice a second

Hi everyone,

I've got a problem with a 7071 which is beeping at me about twice a second, and also flashes the COMPUTE and DIG FILT LEDs on the front panel at the same rate.

Does anyone recognise what the fault is likely to be?

Cheers
Dave

volt-nuts mailing list -- volt-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts
and follow the instructions there.

Joe, Looks like you win the prize for remote diagnosis! Disconnecting PL2 which goes to the keyboard, and it all comes up nicely. What I can do about that though I am not at all sure ... :( Dave -----Original Message----- From: volt-nuts-bounces@febo.com [mailto:volt-nuts-bounces@febo.com] On Behalf Of J. L. Trantham Sent: 29 January 2013 03:14 To: 'Discussion of precise voltage measurement' Subject: Re: [volt-nuts] Solartron 7071 beeping about twice a second I wonder if it might mean multiple 'stuck' buttons on the front panel. Any way to check that? Perhaps disconnecting the front panel and reconnecting? Perhaps making measurements on the front panel itself? Good luck. Joe -----Original Message----- From: volt-nuts-bounces@febo.com [mailto:volt-nuts-bounces@febo.com] On Behalf Of David C. Partridge Sent: Monday, January 28, 2013 9:30 AM To: 'Discussion of precise voltage measurement' Subject: [volt-nuts] Solartron 7071 beeping about twice a second Hi everyone, I've got a problem with a 7071 which is beeping at me about twice a second, and also flashes the COMPUTE and DIG FILT LEDs on the front panel at the same rate. Does anyone recognise what the fault is likely to be? Cheers Dave _______________________________________________ volt-nuts mailing list -- volt-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions there. _______________________________________________ volt-nuts mailing list -- volt-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions there.

DC

David C. Partridge

Wed, Jan 30, 2013 5:49 PM

Further information:

Shorting pins 5 and 6 of PL2 causes the same symptoms, as does pressing and holding the DIG FILT key on another meter.

The odd thing is though that an ohms test between 5 and 6 of keyboard is OC - which does not make sense to me?

Dave
-----Original Message-----
From: volt-nuts-bounces@febo.com [mailto:volt-nuts-bounces@febo.com] On Behalf Of David C. Partridge
Sent: 30 January 2013 17:15
To: 'Discussion of precise voltage measurement'
Subject: Re: [volt-nuts] Solartron 7071 beeping about twice a second

Joe,

Looks like you win the prize for remote diagnosis! Disconnecting PL2 which goes to the keyboard, and it all comes up nicely.

What I can do about that though I am not at all sure ... :(

Dave
-----Original Message-----
From: volt-nuts-bounces@febo.com [mailto:volt-nuts-bounces@febo.com] On Behalf Of J. L. Trantham
Sent: 29 January 2013 03:14
To: 'Discussion of precise voltage measurement'
Subject: Re: [volt-nuts] Solartron 7071 beeping about twice a second

I wonder if it might mean multiple 'stuck' buttons on the front panel. Any way to check that? Perhaps disconnecting the front panel and reconnecting?
Perhaps making measurements on the front panel itself?

Good luck.

Joe

Further information: Shorting pins 5 and 6 of PL2 causes the same symptoms, as does pressing and holding the DIG FILT key on another meter. The odd thing is though that an ohms test between 5 and 6 of keyboard is OC - which does not make sense to me? Dave -----Original Message----- From: volt-nuts-bounces@febo.com [mailto:volt-nuts-bounces@febo.com] On Behalf Of David C. Partridge Sent: 30 January 2013 17:15 To: 'Discussion of precise voltage measurement' Subject: Re: [volt-nuts] Solartron 7071 beeping about twice a second Joe, Looks like you win the prize for remote diagnosis! Disconnecting PL2 which goes to the keyboard, and it all comes up nicely. What I can do about that though I am not at all sure ... :( Dave -----Original Message----- From: volt-nuts-bounces@febo.com [mailto:volt-nuts-bounces@febo.com] On Behalf Of J. L. Trantham Sent: 29 January 2013 03:14 To: 'Discussion of precise voltage measurement' Subject: Re: [volt-nuts] Solartron 7071 beeping about twice a second I wonder if it might mean multiple 'stuck' buttons on the front panel. Any way to check that? Perhaps disconnecting the front panel and reconnecting? Perhaps making measurements on the front panel itself? Good luck. Joe

DC

David C. Partridge

Wed, Jan 30, 2013 6:52 PM

And just to make a "monkeys uncle" out me, it just started working after reconnecting the keyboard for the nth time.

Confused ... You bet, especially as I cannot now provoke the fault (except by holding down the DIG-FILT key or shorting pins 5 and 6).

Dave
-----Original Message-----
From: volt-nuts-bounces@febo.com [mailto:volt-nuts-bounces@febo.com] On Behalf Of David C. Partridge
Sent: 30 January 2013 17:49
To: 'Discussion of precise voltage measurement'
Subject: Re: [volt-nuts] Solartron 7071 beeping about twice a second

Further information:

Shorting pins 5 and 6 of PL2 causes the same symptoms, as does pressing and holding the DIG FILT key on another meter.

The odd thing is though that an ohms test between 5 and 6 of keyboard is OC - which does not make sense to me?

Dave

And just to make a "monkeys uncle" out me, it just started working after reconnecting the keyboard for the nth time. Confused ... You bet, especially as I cannot now provoke the fault (except by holding down the DIG-FILT key or shorting pins 5 and 6). Dave -----Original Message----- From: volt-nuts-bounces@febo.com [mailto:volt-nuts-bounces@febo.com] On Behalf Of David C. Partridge Sent: 30 January 2013 17:49 To: 'Discussion of precise voltage measurement' Subject: Re: [volt-nuts] Solartron 7071 beeping about twice a second Further information: Shorting pins 5 and 6 of PL2 causes the same symptoms, as does pressing and holding the DIG FILT key on another meter. The odd thing is though that an ohms test between 5 and 6 of keyboard is OC - which does not make sense to me? Dave

JL

J. L. Trantham

Wed, Jan 30, 2013 7:49 PM

I wonder if you have a small piece of 'FOD' floating around in the front
panel contacts?

I have never taken a front panel for one of these apart but would suspect
there would be a way to separate the buttons from their contacts and perhaps
clean them. If you could do the disassembly in a clean plastic tub then
carefully inspect for any small 'pieces' that might fall out, it might
explain what the problem was.

Glad you are making progress.

Joe

-----Original Message-----
From: volt-nuts-bounces@febo.com [mailto:volt-nuts-bounces@febo.com] On
Behalf Of David C. Partridge
Sent: Wednesday, January 30, 2013 12:53 PM
To: 'Discussion of precise voltage measurement'
Subject: Re: [volt-nuts] Solartron 7071 beeping about twice a second

And just to make a "monkeys uncle" out me, it just started working after
reconnecting the keyboard for the nth time.

Confused ... You bet, especially as I cannot now provoke the fault (except
by holding down the DIG-FILT key or shorting pins 5 and 6).

Dave
-----Original Message-----
From: volt-nuts-bounces@febo.com [mailto:volt-nuts-bounces@febo.com] On
Behalf Of David C. Partridge
Sent: 30 January 2013 17:49
To: 'Discussion of precise voltage measurement'
Subject: Re: [volt-nuts] Solartron 7071 beeping about twice a second

Further information:

Shorting pins 5 and 6 of PL2 causes the same symptoms, as does pressing and
holding the DIG FILT key on another meter.

The odd thing is though that an ohms test between 5 and 6 of keyboard is OC

which does not make sense to me?

Dave

volt-nuts mailing list -- volt-nuts@febo.com To unsubscribe, go to
https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts
and follow the instructions there.

I wonder if you have a small piece of 'FOD' floating around in the front panel contacts? I have never taken a front panel for one of these apart but would suspect there would be a way to separate the buttons from their contacts and perhaps clean them. If you could do the disassembly in a clean plastic tub then carefully inspect for any small 'pieces' that might fall out, it might explain what the problem was. Glad you are making progress. Joe -----Original Message----- From: volt-nuts-bounces@febo.com [mailto:volt-nuts-bounces@febo.com] On Behalf Of David C. Partridge Sent: Wednesday, January 30, 2013 12:53 PM To: 'Discussion of precise voltage measurement' Subject: Re: [volt-nuts] Solartron 7071 beeping about twice a second And just to make a "monkeys uncle" out me, it just started working after reconnecting the keyboard for the nth time. Confused ... You bet, especially as I cannot now provoke the fault (except by holding down the DIG-FILT key or shorting pins 5 and 6). Dave -----Original Message----- From: volt-nuts-bounces@febo.com [mailto:volt-nuts-bounces@febo.com] On Behalf Of David C. Partridge Sent: 30 January 2013 17:49 To: 'Discussion of precise voltage measurement' Subject: Re: [volt-nuts] Solartron 7071 beeping about twice a second Further information: Shorting pins 5 and 6 of PL2 causes the same symptoms, as does pressing and holding the DIG FILT key on another meter. The odd thing is though that an ohms test between 5 and 6 of keyboard is OC - which does not make sense to me? Dave _______________________________________________ volt-nuts mailing list -- volt-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions there.

JL

J. L. Trantham

Thu, Jan 31, 2013 5:07 AM

One other thing.

I presume that when you push the 'DIG-FILT' key, pin 5 and 6 are 'shorted'
when measured on the key board connector. I think this is what you are
saying but just want to make sure. If so, then I would conclude that there
is a piece of conductive 'FOD' loose in the keyboard or the key was stuck.
You might want to connect your 'beeping' DMM to indicate a short to pins 5
and 6 from the keyboard then shake the keyboard to see if it will 'beep'
when you get it in the proper position. If an occasional beep occurs, then
I would try to open the keyboard and clean the connectors.

Joe

-----Original Message-----
From: volt-nuts-bounces@febo.com [mailto:volt-nuts-bounces@febo.com] On
Behalf Of J. L. Trantham
Sent: Wednesday, January 30, 2013 1:50 PM
To: 'Discussion of precise voltage measurement'
Subject: Re: [volt-nuts] Solartron 7071 beeping about twice a second

I wonder if you have a small piece of 'FOD' floating around in the front
panel contacts?

I have never taken a front panel for one of these apart but would suspect
there would be a way to separate the buttons from their contacts and perhaps
clean them. If you could do the disassembly in a clean plastic tub then
carefully inspect for any small 'pieces' that might fall out, it might
explain what the problem was.

Glad you are making progress.

Joe

-----Original Message-----
From: volt-nuts-bounces@febo.com [mailto:volt-nuts-bounces@febo.com] On
Behalf Of David C. Partridge
Sent: Wednesday, January 30, 2013 12:53 PM
To: 'Discussion of precise voltage measurement'
Subject: Re: [volt-nuts] Solartron 7071 beeping about twice a second

And just to make a "monkeys uncle" out me, it just started working after
reconnecting the keyboard for the nth time.

Confused ... You bet, especially as I cannot now provoke the fault (except
by holding down the DIG-FILT key or shorting pins 5 and 6).

Dave
-----Original Message-----
From: volt-nuts-bounces@febo.com [mailto:volt-nuts-bounces@febo.com] On
Behalf Of David C. Partridge
Sent: 30 January 2013 17:49
To: 'Discussion of precise voltage measurement'
Subject: Re: [volt-nuts] Solartron 7071 beeping about twice a second

Further information:

Shorting pins 5 and 6 of PL2 causes the same symptoms, as does pressing and
holding the DIG FILT key on another meter.

The odd thing is though that an ohms test between 5 and 6 of keyboard is OC

which does not make sense to me?

Dave

volt-nuts mailing list -- volt-nuts@febo.com To unsubscribe, go to
https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts
and follow the instructions there.

One other thing. I presume that when you push the 'DIG-FILT' key, pin 5 and 6 are 'shorted' when measured on the key board connector. I think this is what you are saying but just want to make sure. If so, then I would conclude that there is a piece of conductive 'FOD' loose in the keyboard or the key was stuck. You might want to connect your 'beeping' DMM to indicate a short to pins 5 and 6 from the keyboard then shake the keyboard to see if it will 'beep' when you get it in the proper position. If an occasional beep occurs, then I would try to open the keyboard and clean the connectors. Joe -----Original Message----- From: volt-nuts-bounces@febo.com [mailto:volt-nuts-bounces@febo.com] On Behalf Of J. L. Trantham Sent: Wednesday, January 30, 2013 1:50 PM To: 'Discussion of precise voltage measurement' Subject: Re: [volt-nuts] Solartron 7071 beeping about twice a second I wonder if you have a small piece of 'FOD' floating around in the front panel contacts? I have never taken a front panel for one of these apart but would suspect there would be a way to separate the buttons from their contacts and perhaps clean them. If you could do the disassembly in a clean plastic tub then carefully inspect for any small 'pieces' that might fall out, it might explain what the problem was. Glad you are making progress. Joe -----Original Message----- From: volt-nuts-bounces@febo.com [mailto:volt-nuts-bounces@febo.com] On Behalf Of David C. Partridge Sent: Wednesday, January 30, 2013 12:53 PM To: 'Discussion of precise voltage measurement' Subject: Re: [volt-nuts] Solartron 7071 beeping about twice a second And just to make a "monkeys uncle" out me, it just started working after reconnecting the keyboard for the nth time. Confused ... You bet, especially as I cannot now provoke the fault (except by holding down the DIG-FILT key or shorting pins 5 and 6). Dave -----Original Message----- From: volt-nuts-bounces@febo.com [mailto:volt-nuts-bounces@febo.com] On Behalf Of David C. Partridge Sent: 30 January 2013 17:49 To: 'Discussion of precise voltage measurement' Subject: Re: [volt-nuts] Solartron 7071 beeping about twice a second Further information: Shorting pins 5 and 6 of PL2 causes the same symptoms, as does pressing and holding the DIG FILT key on another meter. The odd thing is though that an ohms test between 5 and 6 of keyboard is OC - which does not make sense to me? Dave _______________________________________________ volt-nuts mailing list -- volt-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions there. _______________________________________________ volt-nuts mailing list -- volt-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions there.

DC

David C. Partridge

Thu, Jan 31, 2013 9:23 AM

I presume that when you push the 'DIG-FILT' key, pin 5 and 6 are 'shorted'
when measured on the key board connector.

Correct.

'FOD'

OK, I'll bite, what does that one mean?

try to open the keyboard

I'm pretty sure the keyboard isn't amenable to being opened without permanent damage.

Dave

> I presume that when you push the 'DIG-FILT' key, pin 5 and 6 are 'shorted' > when measured on the key board connector. Correct. > 'FOD' OK, I'll bite, what does that one mean? > try to open the keyboard I'm pretty sure the keyboard isn't amenable to being opened without permanent damage. Dave

RK

Rob Klein

Thu, Jan 31, 2013 10:50 AM

Op 31-1-2013 10:23, David C. Partridge schreef:

'FOD'
OK, I'll bite, what does that one mean?

According to Wikipedia:
"Foreign Object Debris (FOD) is a substance, debris or article alien
to a vehicle or system which would potentially cause damage."

Rob.

Op 31-1-2013 10:23, David C. Partridge schreef: > 'FOD' > OK, I'll bite, what does that one mean? > According to Wikipedia: "*Foreign Object Debris* (FOD) is a substance, debris or article alien to a vehicle or system which would potentially cause damage." Rob.

JL

J. L. Trantham

Thu, Jan 31, 2013 2:19 PM

Dave,

My knowledge of 'FOD' comes from the Navy, in particular, aircraft carriers.
It is an acronym standing for 'Foreign Object Damage' or 'Foreign Object
Debris'.

On an aircraft carrier, there are periodic 'FOD patrols' whereby the crew
walk the flight deck, shoulder to shoulder, stern to bow and bow to stern,
to identify and remove any object that might get 'sucked up' into the intake
of a jet engine as aircraft are being launched. A particularly bad time for
an engine failure and usually costs an aircraft and not uncommonly a crew.

Joe

-----Original Message-----
From: volt-nuts-bounces@febo.com [mailto:volt-nuts-bounces@febo.com] On
Behalf Of David C. Partridge
Sent: Thursday, January 31, 2013 3:24 AM
To: 'Discussion of precise voltage measurement'
Subject: Re: [volt-nuts] Solartron 7071 beeping about twice a second

I presume that when you push the 'DIG-FILT' key, pin 5 and 6 are 'shorted'
when measured on the key board connector.

Correct.

'FOD'

OK, I'll bite, what does that one mean?

try to open the keyboard

I'm pretty sure the keyboard isn't amenable to being opened without
permanent damage.

Dave

volt-nuts mailing list -- volt-nuts@febo.com To unsubscribe, go to
https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts
and follow the instructions there.

Dave, My knowledge of 'FOD' comes from the Navy, in particular, aircraft carriers. It is an acronym standing for 'Foreign Object Damage' or 'Foreign Object Debris'. On an aircraft carrier, there are periodic 'FOD patrols' whereby the crew walk the flight deck, shoulder to shoulder, stern to bow and bow to stern, to identify and remove any object that might get 'sucked up' into the intake of a jet engine as aircraft are being launched. A particularly bad time for an engine failure and usually costs an aircraft and not uncommonly a crew. Joe -----Original Message----- From: volt-nuts-bounces@febo.com [mailto:volt-nuts-bounces@febo.com] On Behalf Of David C. Partridge Sent: Thursday, January 31, 2013 3:24 AM To: 'Discussion of precise voltage measurement' Subject: Re: [volt-nuts] Solartron 7071 beeping about twice a second > I presume that when you push the 'DIG-FILT' key, pin 5 and 6 are 'shorted' > when measured on the key board connector. Correct. > 'FOD' OK, I'll bite, what does that one mean? > try to open the keyboard I'm pretty sure the keyboard isn't amenable to being opened without permanent damage. Dave _______________________________________________ volt-nuts mailing list -- volt-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions there.

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Solartron 7071 beeping about twice a second