Hello!
I am VERY interested as I have the oppossite!. Please, let me know if still
available.
THANKS!!!
JOSE
----------------------------------------------------------------------
73 EB5AGV / EC5AAU - JOSE V. GAVILA
La Canyada - Valencia (SPAIN) - Loc: IM99SM
Vintage Radio:
Vintage Test Equipment:
European Boatanchors List:
-----Mensaje original-----
De: hp_agilent_equipment@...
[mailto:hp_agilent_equipment@...] En nombre de peepholenz
Enviado el: lunes, 15 de enero de 2007 5:51
Para: hp_agilent_equipment@...
Asunto: [hp_agilent_equipment] 5328A HPIB PCB
Have recently acquired a going 5328A counter.It has the HPIB option
which I will never use.If anyone is interested in the PCB (cost of
shipping ex New Zealand!) let me know.
Peter
|
Thanks Richard,
I guess that the week-end stopped other guruhs from responding.
Since Richard's mail the following has happened:
checked ground lead for -12.6V heater supply, also connected earth side to ground with lead. Even connected a 12V bulb across it result: ground connection is OK.
checked all other crimped connectors at their respective connection point result: all seem OK
checked 6.3V heater supply, put 6V bulb across it: all OK
checked connections to pots on store panel: all OK
checked all leads coming from CRT, including those coming from the top to their corresponding connections on respective boards: all OK
Could someone please confirm that the colour coding of the wiring to the neck of the CRT is as follows, looking from the front of the equipent towards the back: (9),(5),(943),(9),(5),(4) This is not obvious from the manual.
Would appreciate suggestions / advice, where to go from here.
Chris
toggle quoted message
Show quoted text
----- Original Message -----
From: rchrdpett
To: hp_agilent_equipment@...
Sent: Sunday, January 14, 2007 9:44 PM
Subject: [hp_agilent_equipment] Re: 141T storage failure
Chris
I had the same problem ,12.6V on the flood gun pin - no obvious flood
gun operation.
It turned out to be the ground lead from the "cold" side of the flood
gun ( pin 11, black wire )was not continuous to ground. The black
lead inner conductor was broken at the push-on connector to the HV
board. These connectors are known for poor crimping which fails after
several pushon /pulloff events.
Cheers
Richard Pett (owner of 2 systems)
--- In hp_agilent_equipment@..., "Chris van Lint"
<chrisvanlint@...> wrote:
>
> I have a problem with my 141T/8555A spectrum analyzer. The gear
works
> perfect in the conventional mode, but it will not store. When I
push the
> "store" button, the screen simply goes blank. Pushing either the
STD or FAST
> button makes it operate as a conventional CRT.
> Don Collie has very generously swapped my pulse circuit board in
his
> analyzer and has confirmed that the pulse board is OK. Indeed I
have
> checked all voltages and waveforms / amplitudes on the pulse board
and
> confirmed that they operate as expected. I have also checked all
supply
> voltages and adjusted them to be spot on. The voltages at the
various pins
> of the CRT have been checked, including the -12.6V heater voltage
for the
> flood gun and are all within limits. I have not checked the heater
voltage
> for the main gun, as the unit operates fine as a conventional
analyzer.
> Similarly I have not checked the
> 6.6KV supply, as the unit is fine in conventional mode. I did
check the
> voltage at the anode of CR23, which is -1350V as specified. The
voltage at
> the anode of CR24 varies between -2518V to 1591V in what I would
describe as
> being almost a saw tooth like fashion. Perhaps the experts can
find a clue
> in this observation.
> In sheer desperation I replaced the CRT with a brand new one I
have, (which
> of course includes a brand new infamous 3 conductor ribbon cable),
but it
> has not solved the problem. In other words everything is fine as a
> conventional analyzer, but when the "store" button is pushed,
nothing
> changes. Again voltages have been re-checked and re-adjusted and
are as
> expected according to the circuit diagram.
> I cannot perform the pulse circuit adjustments described in section
5-0 of
> the manual, simply because I cannot get past sub paragraph f, which
requires
> the fast collimator adjustment A5R14B to be adjusted so that the
entire
> flood gun illumination is visible. I cannot get any illumination
> whatsoever.
> I would be grateful for any suggestions as to what my next move(s)
should
> be.
>
> Cheers,
>
> Chris
>
|
Have recently acquired a going 5328A counter.It has the HPIB option
which I will never use.If anyone is interested in the PCB (cost of
shipping ex New Zealand!) let me know.
Peter
|
Re: HP8407A Network Analyzer... opinions?
Ok, thanks for the info!. What is in the 'accessory kit'?
It has probes, adapters, and such things as I remember.
>You might want to look at an 8505A if you have a choice.
Could I get an 8505A for less than US$300 ???
Regards,
JOSE
Maybe. You would have to shop carefully and get the parts one at a time.
A full 8505A has 4 boxes. You MUST have two, the RF Section and the
Display. The Storage Normalizer and S Parameter are options. If you
don't have the S Parameter, you may need a Reflection-Transmission Test
Set. It depends somewhat on your intended use. The 8505A goes to 1.8
GHz. If you are going to probe IFs, the 8407 might be a better choice.
IMO, the 8413 meter is near useless except for CW measurements.
The expensive parts are often the special cables required to
interconnect the boxes. They've been discussed on-list fairly recently.
FWIW,
-John
|
From: [BOATANCHORS-TEMPE] Transformer ID
Subject: [BOATANCHORS-TEMPE] Transformer ID
From: Robert Lawson W4Rl <w4rl@...>
Date: Sun, January 14, 2007 6:18 pm
To: BOATANCHORS@...
Hello to all,
I have 'inherited' the following transformers that I need to identify as
to voltage,
current ratings, & color coding of wires. If I have no need for them, I
will have
them available for reasonable purchase/trade. Any help would be
appreciated.
Thanks very much.
73 Robert W4RL Pensacola FL
*
From another list, NOT MINE !!
-John
PAECO hp 910=94
HP200 CDR R55
Stamped 9100-1329 10-68
HP330B stamped 9100-0011
|
New and old model 8656B Sig Gen differences
Anybody have knowledge of these sig gens? Older model has computer
keyboard type keys/red LED display and new model looks like the 8657A
with green LED display and soft rubber keys. Are there significant
differences? Service-abilty?
Thanks
David.
|
Re: YIG Source in HP-8505A Network Analyzer
--- In hp_agilent_equipment@..., Dave-NR1DX/0 <nr1dx@...> wrote:
08505-60227
OR
08505-60228 (REBUILT UNIT)
At 12:14 PM 1/14/2007, grossefeldberg wrote:
Hello, does anyone know the part number of the YIG module
with the circuit designation of A2A19 and operating over the
range of 4.21 to 5.51 GHz. Jim Barton
Yahoo! Groups Links
Thanks Dave.
Jim
[Non-text portions of this message have been removed]
|
Re: New Website [WAS] [TekScopes] Tektronix 468 manuals - I got 'em
Well, if thoose manuals comes from the people that sells manuals, that
should not be a problem i would have thought.
With best regards
With best regards
Tomas Larsson
Sweden
for downloads etc.
Use the free www.yousendit.com service for uploading.
Excellent and cheap hosting, use
Verus Amicus Est Tamquam Alter Idem
toggle quoted message
Show quoted text
-----Original Message-----
From: TekScopes@...
[mailto:TekScopes@...] On Behalf Of Lars Ahlstr?m
Sent: Monday, January 15, 2007 12:03 AM
To: tomaslarssonse@...; TekScopes@...;
hp_agilent_equipment@...;
Manual_Exchange@...; TekScopArc@...;
'FEDPIC Grupp'; naktalk@...
Subject: SV: New Website [WAS] [TekScopes] Tektronix 468
manuals - I got 'em
Wonderful news, Tomas!
I have the BAMA collection saved on disk.
Unfortunately I have a bunch of manuals mixed into the
collection,that is the work of some manual providers, I guess
they will not be happy to find their stuff outthere =) They
are however not that many, and these are also separated in
the backups.
But if you need anything, write a line.
Btw, the one that needed a 2246 manual, I have el 2246IY
manuelo available.
Regards,
Lars
-----Ursprungligt meddelande-----
Fr?n: TekScopes@...
[mailto:TekScopes@...] F?r Tomas Larsson
Skickat: den 14 januari 2007 23:47
Till: TekScopes@...; hp_agilent_equipment@...;
Manual_Exchange@...; TekScopArc@...;
FEDPIC Grupp; naktalk@...
?mne: New Website [WAS] [TekScopes] Tektronix 468 manuals - I got 'em
Hi all Members in all Groups.
Since BAMA is scaling down, I have decided to take over from
where BAMA ended.
I have created a new domain, called www.ebaman.com,
(Electronic Boat Anchor Archives for MANuals) it will however
take a day or two for the DNS-update.
I will start to build the website at the end of this week.
After that, when it goes online, It will be ready.
I would however be very happy for Ideas and such.
With best regards
Tomas Larsson
Sweden
. <> se .
<> mine.nu .
<> mine.nu for downloads etc.
Use the free www.yousendit.com service for uploading.
Excellent and cheap hosting, use .
<>
net/?coupon=cust23962 Verus Amicus Est Tamquam Alter Idem
-----Original Message-----
From: TekScopes@yahoogrou <mailto:TekScopes%40yahoogroups.com> ps.com
[mailto:TekScopes@yahoogrou <mailto:TekScopes%40yahoogroups.com>
ps.com] On Behalf Of Stefan Trethan
Sent: Sunday, January 14, 2007 9:34 PM
To: TekScopes@yahoogrou <mailto:TekScopes%40yahoogroups.com> ps.com
Subject: Re: [TekScopes] Tektronix 468 manuals - I got 'em
At least one member keeps a server with manuals, i think the right
persons will reply.
You could also try < <>
info.com/>
Now that BAMA does no longer take TEK stuff, i think we should
actively do something in that regard.
There should be a list of sorts, or a table, with all free digital
manuals that we know of, and listing locations where they are.
We only need one "download" place, but we should have
several people
have a copy locally. It should take little effort to keep a few CDs or
DVDs with manuals, just in case one of those download places is lost,
and by distributing them there should always be many people with the
same copy, if someone is unreachable for some reason.
I made a database in the database section, to show what i am talking
about <. <>
groups.yahoo.com/group/TekScopes/database>
I think there may be other ways to do this, but that's the general
idea.
Over time manuals will surely be distributed over many servers,
especially now with BAMA. I believe instead of attempting
to set up a
central archive that has all it would work better to have the files
distributed, as long as there is some index somewhere to find them and
backup copies in case one server is lost.
What do you think?
ST
On Sun, 14 Jan 2007 20:14:41 +0100, anon_tx <anon_tx@excite.
<mailto:anon_tx%40excite.com> com> wrote:
The moderator's email is 'hidden' so I am unable to ask him/her off-
list so I will put it to you...
There are two parts: one 27MBy and the other 39MBy. I used hjsplit to
split them into 1.4MBy chunks but think that is probably too much to
upload to the files section in this group - split or not. It will
probably consume (or exceed) the remainder of my upload quota - or for
that matter maybe this entire group.
So, I was in turn thinking about posting the manuals to usenet in the
technical books section. Anybody have any thoughts on what the 'smart'
thing to do is or what you'd like to see? I have been looking for
these things a long time (for free) and finally broke down and bought
them and am willing to share now that I have them.
[Non-text portions of this message have been removed]
Yahoo! Groups Links
__________________________________________________ Anv?nder du Yahoo!? ?r du tr?tt p? spam? Yahoo! E-post har det b?sta spamskyddet som finns
|
New Website [WAS] [TekScopes] Tektronix 468 manuals - I got 'em
Hi all Members in all Groups.
Since BAMA is scaling down, I have decided to take over from where BAMA
ended.
I have created a new domain, called www.ebaman.com, (Electronic Boat Anchor
Archives for MANuals) it will however take a day or two for the DNS-update.
I will start to build the website at the end of this week.
After that, when it goes online, It will be ready.
I would however be very happy for Ideas and such.
With best regards
Tomas Larsson
Sweden
for downloads etc.
Use the free www.yousendit.com service for uploading.
Excellent and cheap hosting, use
Verus Amicus Est Tamquam Alter Idem
toggle quoted message
Show quoted text
-----Original Message-----
From: TekScopes@...
[mailto:TekScopes@...] On Behalf Of Stefan Trethan
Sent: Sunday, January 14, 2007 9:34 PM
To: TekScopes@...
Subject: Re: [TekScopes] Tektronix 468 manuals - I got 'em
At least one member keeps a server with manuals, i think the
right persons will reply.
You could also try <>
Now that BAMA does no longer take TEK stuff, i think we
should actively do something in that regard.
There should be a list of sorts, or a table, with all free
digital manuals that we know of, and listing locations where they are.
We only need one "download" place, but we should have several
people have a copy locally. It should take little effort to
keep a few CDs or DVDs with manuals, just in case one of
those download places is lost, and by distributing them there
should always be many people with the same copy, if someone
is unreachable for some reason.
I made a database in the database section, to show what i am
talking about <>
I think there may be other ways to do this, but that's the
general idea.
Over time manuals will surely be distributed over many
servers, especially now with BAMA. I believe instead of
attempting to set up a central archive that has all it would
work better to have the files distributed, as long as there
is some index somewhere to find them and backup copies in
case one server is lost.
What do you think?
ST
On Sun, 14 Jan 2007 20:14:41 +0100, anon_tx
<anon_tx@...> wrote:
The moderator's email is 'hidden' so I am unable to ask him/her off-
list so I will put it to you...
There are two parts: one 27MBy and the other 39MBy. I used hjsplit to
split them into 1.4MBy chunks but think that is probably too much to
upload to the files section in this group - split or not. It will
probably consume (or exceed) the remainder of my upload quota - or for
that matter maybe this entire group.
So, I was in turn thinking about posting the manuals to usenet in the
technical books section. Anybody have any thoughts on what the 'smart'
thing to do is or what you'd like to see? I have been looking for
these things a long time (for free) and finally broke down and bought
them and am willing to share now that I have them.
|
New Website [WAS] [TekScopes] Tektronix 468 manuals - I got 'em
Hi all Members in all Groups.
Since BAMA is scaling down, I have decided to take over from where BAMA
ended.
I have created a new domain, called www.ebaman.com, (Electronic Boat Anchor
Archives for MANuals) it will however take a day or two for the DNS-update.
I will start to build the website at the end of this week.
After that, when it goes online, It will be ready.
I would however be very happy for Ideas and such.
With best regards
Tomas Larsson
Sweden
for downloads etc.
Use the free www.yousendit.com service for uploading.
Excellent and cheap hosting, use
Verus Amicus Est Tamquam Alter Idem
toggle quoted message
Show quoted text
-----Original Message-----
From: TekScopes@...
[mailto:TekScopes@...] On Behalf Of Stefan Trethan
Sent: Sunday, January 14, 2007 9:34 PM
To: TekScopes@...
Subject: Re: [TekScopes] Tektronix 468 manuals - I got 'em
At least one member keeps a server with manuals, i think the
right persons will reply.
You could also try <>
Now that BAMA does no longer take TEK stuff, i think we
should actively do something in that regard.
There should be a list of sorts, or a table, with all free
digital manuals that we know of, and listing locations where they are.
We only need one "download" place, but we should have several
people have a copy locally. It should take little effort to
keep a few CDs or DVDs with manuals, just in case one of
those download places is lost, and by distributing them there
should always be many people with the same copy, if someone
is unreachable for some reason.
I made a database in the database section, to show what i am
talking about <>
I think there may be other ways to do this, but that's the
general idea.
Over time manuals will surely be distributed over many
servers, especially now with BAMA. I believe instead of
attempting to set up a central archive that has all it would
work better to have the files distributed, as long as there
is some index somewhere to find them and backup copies in
case one server is lost.
What do you think?
ST
On Sun, 14 Jan 2007 20:14:41 +0100, anon_tx
<anon_tx@...> wrote:
The moderator's email is 'hidden' so I am unable to ask him/her off-
list so I will put it to you...
There are two parts: one 27MBy and the other 39MBy. I used hjsplit to
split them into 1.4MBy chunks but think that is probably too much to
upload to the files section in this group - split or not. It will
probably consume (or exceed) the remainder of my upload quota - or for
that matter maybe this entire group.
So, I was in turn thinking about posting the manuals to usenet in the
technical books section. Anybody have any thoughts on what the 'smart'
thing to do is or what you'd like to see? I have been looking for
these things a long time (for free) and finally broke down and bought
them and am willing to share now that I have them. __________________________________________________ Anv?nder du Yahoo!? ?r du tr?tt p? spam? Yahoo! E-post har det b?sta spamskyddet som finns
|
Thanks Richard,
I'll check that out
Chris
toggle quoted message
Show quoted text
----- Original Message -----
From: rchrdpett
To: hp_agilent_equipment@...
Sent: Sunday, January 14, 2007 9:44 PM
Subject: [hp_agilent_equipment] Re: 141T storage failure
Chris
I had the same problem ,12.6V on the flood gun pin - no obvious flood
gun operation.
It turned out to be the ground lead from the "cold" side of the flood
gun ( pin 11, black wire )was not continuous to ground. The black
lead inner conductor was broken at the push-on connector to the HV
board. These connectors are known for poor crimping which fails after
several pushon /pulloff events.
Cheers
Richard Pett (owner of 2 systems)
--- In hp_agilent_equipment@..., "Chris van Lint"
<chrisvanlint@...> wrote:
>
> I have a problem with my 141T/8555A spectrum analyzer. The gear
works
> perfect in the conventional mode, but it will not store. When I
push the
> "store" button, the screen simply goes blank. Pushing either the
STD or FAST
> button makes it operate as a conventional CRT.
> Don Collie has very generously swapped my pulse circuit board in
his
> analyzer and has confirmed that the pulse board is OK. Indeed I
have
> checked all voltages and waveforms / amplitudes on the pulse board
and
> confirmed that they operate as expected. I have also checked all
supply
> voltages and adjusted them to be spot on. The voltages at the
various pins
> of the CRT have been checked, including the -12.6V heater voltage
for the
> flood gun and are all within limits. I have not checked the heater
voltage
> for the main gun, as the unit operates fine as a conventional
analyzer.
> Similarly I have not checked the
> 6.6KV supply, as the unit is fine in conventional mode. I did
check the
> voltage at the anode of CR23, which is -1350V as specified. The
voltage at
> the anode of CR24 varies between -2518V to 1591V in what I would
describe as
> being almost a saw tooth like fashion. Perhaps the experts can
find a clue
> in this observation.
> In sheer desperation I replaced the CRT with a brand new one I
have, (which
> of course includes a brand new infamous 3 conductor ribbon cable),
but it
> has not solved the problem. In other words everything is fine as a
> conventional analyzer, but when the "store" button is pushed,
nothing
> changes. Again voltages have been re-checked and re-adjusted and
are as
> expected according to the circuit diagram.
> I cannot perform the pulse circuit adjustments described in section
5-0 of
> the manual, simply because I cannot get past sub paragraph f, which
requires
> the fast collimator adjustment A5R14B to be adjusted so that the
entire
> flood gun illumination is visible. I cannot get any illumination
> whatsoever.
> I would be grateful for any suggestions as to what my next move(s)
should
> be.
>
> Cheers,
>
> Chris
>
|
Re: HP8407A Network Analyzer... opinions?
Hello John, At 16:22 14/01/2007 -0500, you wrote: It's a pretty decent Vector ANA, if a bit old. The 8601A is a nice
little sweeper. You will need the accessory kit too. My only real
criticism is that you have to change display units to change to Smith
Chart from rectilinear displays (unless you have the accessory box).
OTOH, the same displays work in the 8410 system also. Ok, thanks for the info!. What is in the 'accessory kit'? You might want to look at an 8505A if you have a choice. Could I get an 8505A for less than US$300??? Regards, JOSE ---------------------------------------------------------------------- 73 EB5AGV / EC5AAU - JOSE V. GAVILA La Canyada - Valencia (SPAIN) - Loc: IM99SM Vintage Radio: Vintage Test Equipment: European Boatanchors List:
|
HP8407A Network Analyzer... opinions?
Hello!
I have the chance to get a nice HP8601A + HP8407A setup. Please, could
you
comment about this set (performance, price, experiences, ...)?
Thanks!!!
Best regards,
JOSE
It's a pretty decent Vector ANA, if a bit old. The 8601A is a nice
little sweeper. You will need the accessory kit too. My only real
criticism is that you have to change display units to change to Smith
Chart from rectilinear displays (unless you have the accessory box).
OTOH, the same displays work in the 8410 system also.
You might want to look at an 8505A if you have a choice.
-John
|
HP8407A Network Analyzer... opinions?
Hello!
I have the chance to get a nice HP8601A + HP8407A setup. Please, could you comment about this set (performance, price, experiences, ...)?
Thanks!!!
Best regards,
JOSE
----------------------------------------------------------------------
73 EB5AGV / EC5AAU - JOSE V. GAVILA
La Canyada - Valencia (SPAIN) - Loc: IM99SM
Vintage Radio:
Vintage Test Equipment:
European Boatanchors List:
|
Re: HP8568B CRT replacement question LCD?
Hi for the LCD CRT replacement kit take a look at the link below. Good but WAY TOO EXPENSIVE!!! Best regards Sotiris Pdmtr In hp_agilent_equipment@..., k6yaz@... wrote:
It was mentioned that there is an LCD replacement available for a
tired CRT used in the 8568 and 8566 series.
I use an external Tektronix X-Y-Z display which is OK but is there an LCD X-Y-Z device available for a reasonable price, or a way to adapt a computer display to work with the three outputs provided by the display unit?
Since storage and graticle lines are provided by the display unit, it shouldn't be too difficult.
Stuart K6YAZ
Los Angeles, CA
|
Re: YIG Source in HP-8505A Network Analyzer
08505-60227
OR
08505-60228 (REBUILT UNIT)
toggle quoted message
Show quoted text
At 12:14 PM 1/14/2007, grossefeldberg wrote: Hello, does anyone know the part number of the YIG module
with the circuit designation of A2A19 and operating over the
range of 4.21 to 5.51 GHz. Jim Barton
Yahoo! Groups Links
|
YIG Source in HP-8505A Network Analyzer
Hello, does anyone know the part number of the YIG module
with the circuit designation of A2A19 and operating over the
range of 4.21 to 5.51 GHz. Jim Barton
|
Re: HP8568B CRT replacement question LCD?
It was mentioned that there is an LCD replacement available for a tired CRT
used in the 8568 and 8566 series.
I use an external Tektronix X-Y-Z display which is OK but is there an LCD
X-Y-Z device available for a reasonable price, or a way to adapt a computer
display to work with the three outputs provided by the display unit?
Since storage and graticle lines are provided by the display unit, it
shouldn't be too difficult.
Stuart K6YAZ
Los Angeles, CA
|
Chris I had the same problem ,12.6V on the flood gun pin - no obvious flood gun operation. It turned out to be the ground lead from the "cold" side of the flood gun ( pin 11, black wire )was not continuous to ground. The black lead inner conductor was broken at the push-on connector to the HV board. These connectors are known for poor crimping which fails after several pushon /pulloff events. Cheers Richard Pett (owner of 2 systems) --- In hp_agilent_equipment@..., "Chris van Lint" <chrisvanlint@...> wrote:
I have a problem with my 141T/8555A spectrum analyzer. The gear
works perfect in the conventional mode, but it will not store. When I push the "store" button, the screen simply goes blank. Pushing either the STD or FAST button makes it operate as a conventional CRT.
Don Collie has very generously swapped my pulse circuit board in his analyzer and has confirmed that the pulse board is OK. Indeed I have checked all voltages and waveforms / amplitudes on the pulse board and confirmed that they operate as expected. I have also checked all supply voltages and adjusted them to be spot on. The voltages at the various pins of the CRT have been checked, including the -12.6V heater voltage for the flood gun and are all within limits. I have not checked the heater voltage for the main gun, as the unit operates fine as a conventional analyzer. Similarly I have not checked the
6.6KV supply, as the unit is fine in conventional mode. I did check the voltage at the anode of CR23, which is -1350V as specified. The voltage at the anode of CR24 varies between -2518V to 1591V in what I would describe as being almost a saw tooth like fashion. Perhaps the experts can find a clue in this observation.
In sheer desperation I replaced the CRT with a brand new one I have, (which of course includes a brand new infamous 3 conductor ribbon cable), but it has not solved the problem. In other words everything is fine as a
conventional analyzer, but when the "store" button is pushed, nothing changes. Again voltages have been re-checked and re-adjusted and are as expected according to the circuit diagram.
I cannot perform the pulse circuit adjustments described in section 5-0 of the manual, simply because I cannot get past sub paragraph f, which requires the fast collimator adjustment A5R14B to be adjusted so that the entire flood gun illumination is visible. I cannot get any illumination
whatsoever.
I would be grateful for any suggestions as to what my next move(s) should be.
Cheers,
Chris
|
I have a problem with my 141T/8555A spectrum analyzer. The gear works perfect in the conventional mode, but it will not store. When I push the "store" button, the screen simply goes blank. Pushing either the STD or FAST button makes it operate as a conventional CRT.
Don Collie has very generously swapped my pulse circuit board in his analyzer and has confirmed that the pulse board is OK. Indeed I have checked all voltages and waveforms / amplitudes on the pulse board and confirmed that they operate as expected. I have also checked all supply voltages and adjusted them to be spot on. The voltages at the various pins of the CRT have been checked, including the -12.6V heater voltage for the flood gun and are all within limits. I have not checked the heater voltage for the main gun, as the unit operates fine as a conventional analyzer. Similarly I have not checked the
6.6KV supply, as the unit is fine in conventional mode. I did check the voltage at the anode of CR23, which is -1350V as specified. The voltage at the anode of CR24 varies between -2518V to 1591V in what I would describe as being almost a saw tooth like fashion. Perhaps the experts can find a clue in this observation.
In sheer desperation I replaced the CRT with a brand new one I have, (which of course includes a brand new infamous 3 conductor ribbon cable), but it has not solved the problem. In other words everything is fine as a conventional analyzer, but when the "store" button is pushed, nothing changes. Again voltages have been re-checked and re-adjusted and are as expected according to the circuit diagram.
I cannot perform the pulse circuit adjustments described in section 5-0 of the manual, simply because I cannot get past sub paragraph f, which requires the fast collimator adjustment A5R14B to be adjusted so that the entire flood gun illumination is visible. I cannot get any illumination whatsoever.
I would be grateful for any suggestions as to what my next move(s) should be.
Cheers,
Chris
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