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I have a nice 70K MMS HP spectrum analyzer made from: 70004A color display 70902A IF 70900A LO 70905A RF??? gives 22Ghz range. on power up, I get a red ERR led on the LO (70900A), and if I query the error it says the battery in the 70900A is dead....well WHAT battery would that be? I see no reference to that in the manual at all ! I confess I am very puzzled by this.? The screen also shows an UNCOR white label, but not sure if that is related.? after a brief interval, the red error LED goes out on the LO module. operation is fine otherwise, but I have not been able to source an HP-IL keyboard or memory cards for this anywhere. my monitor is getting a bit dim, is there any internal adjustment before I give up on it?? how do you get the monitor section out?? it does not have the same bottom hex key removal as the other units. any info appreciated.? plus I'd love to find a module extender anywhere. all the best, walter (walter2 -at- sphere.bc.ca) sphere research corp.
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There is a battery internal to the ?900a (on the CPU board iirc). ?Pretty easy to replace but it takes a soldering iron and you'll need to order the battery unless you have a well stocked battery collection.?
I can dig out the gory details when I get home.?
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On Jun 28, 2017, at 17:26, walter2@... [hp_agilent_equipment] < hp_agilent_equipment@...> wrote:
?
I have a nice 70K MMS HP spectrum analyzer made from:
70004A color display
70902A IF
70900A LO
70905A RF??? gives 22Ghz range.
on power up, I get a red ERR led on the LO (70900A), and if I query the error it says the battery in the 70900A is dead....well WHAT battery would that be? I see no reference to that in the manual at all !
I confess I am very puzzled by this.? The screen also shows an UNCOR white label, but not sure if that is related.? after a brief interval, the red error LED goes out on the LO module.
operation is fine otherwise, but I have not been able to source an HP-IL keyboard or memory cards for this anywhere.
my monitor is getting a bit dim, is there any internal adjustment before I give up on it?? how do you get the monitor section out?? it does not have the same bottom hex key removal as the other units.
any info appreciated.? plus I'd love to find a module extender anywhere.
all the best,
walter (walter2 -at- )
sphere research corp.
|
Hi Walter
I am new to the 70000 equipment but lets
see if we can help
?
Firstly there is a battery in the 70004A
colour display and one in the 70900A LO
?
Regarding memory cards apparently available but expensive the question
is why do you require the memory ?
As the testing will not be to arduous with your current set up
?
The monitor is getting dim? the fix is to replace it with an
LCD? Look at newscope? 7A
This is a new product so I haven’t tried it yet but it comes from
a supplier with an excellent reputation
Of well engineered LCD replacement kits for HP equipment ,
?
Disassembly :- Strongly ?suggest you down load the 70004A op
manual? and the newscope? 7A manual
?
Extender units are like rocking horse droppings ?but do not despair?
you? have 70004A
You require a 700001 frame and 2 cables , you can make the cables your sylph
?
I have taken the covers of my 70004A and with this connected to a 70001
frame
I can work on the 70900A LO in the 70004A with the remaining modules in
the 70001 frame
?
Once you have the 70001 frame I suggest you get the preselected in put
for the 70905A
And a 70903A? 100Kc to 3 Mhz IF filter
?
Regards Paul B
?
From:
hp_agilent_equipment@...
[mailto:hp_agilent_equipment@...]
Sent: 28 June 2017 22:26
To: hp_agilent_equipment@...
Subject: [hp_agilent_equipment]
70K MMS Questions
?
?
I have a nice 70K MMS HP spectrum analyzer made from:
70004A color display
70902A IF
70900A LO
70905A RF??? gives 22Ghz range.
on power up, I get a red ERR led on the LO (70900A), and if I query the error
it says the battery in the 70900A is dead....well WHAT battery would that be? I
see no reference to that in the manual at all !
I confess I am very puzzled by this.? The screen also shows an UNCOR white
label, but not sure if that is related.? after a brief interval, the red
error LED goes out on the LO module.
operation is fine otherwise, but I have not been able to source an HP-IL
keyboard or memory cards for this anywhere.
my monitor is getting a bit dim, is there any internal adjustment before I give
up on it?? how do you get the monitor section out?? it does not have
the same bottom hex key removal as the other units.
any info appreciated.? plus I'd love to find a module extender anywhere.
all the best,
walter (walter2 -at- sphere.bc.ca)
sphere research corp.
?
No virus found in this message.
Checked by AVG -
Version: 2016.0.8013 / Virus Database: 4779/14618 - Release Date: 06/28/17
|
I'll add, that outside of the shipping costs, 70004as are generally cheap. I paid <$150 for each of mine.
You can also hang an external display off of an 70004a.
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On Jun 28, 2017, at 19:17, 'Paul Bicknell' paul@... [hp_agilent_equipment] <hp_agilent_equipment@...> wrote:
I
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One thing i want to point out here is that the 70905 RF Section does not contain a preselector which makes it a pain in the ass to use, HP made a separate preselector module ( 70600A) but the better way is to find a 70908A or 70909A RF Section but you have to check the FW of your 900A to make sure its compatible !
The battery is a lithium battery about the size of a AA battery ,? its on the CPU board in the 70900A ,? when you open the lid of the 900 you see the CPU board on the outside , its easy to identify because it contains a little daughter board which holds the RAM and Firmware !
for manuals you can go to
On Wednesday, June 28, 2017 4:26 PM, "walter2@... [hp_agilent_equipment]" wrote:
?
I have a nice 70K MMS HP spectrum analyzer made from:
70004A color display
70902A IF
70900A LO
70905A RF??? gives 22Ghz range.
on power up, I get a red ERR led on the LO (70900A), and if I query the error it says the battery in the 70900A is dead....well WHAT battery would that be? I see no reference to that in the manual at all !
I confess I am very puzzled by this.? The screen also shows an UNCOR white label, but not sure if that is related.? after a brief interval, the red error LED goes out on the LO module.
operation is fine otherwise, but I have not been able to source an HP-IL keyboard or memory cards for this anywhere.
my monitor is getting a bit dim, is there any internal adjustment before I give up on it?? how do you get the monitor section out?? it does not have the same bottom hex key removal as the other units.
any info appreciated.? plus I'd love to find a module extender anywhere.
all the best,
walter (walter2 -at- sphere.bc.ca)
sphere research corp.
|
Thanks for the info on battery location, I went through the manual, and did not find it, or any parts shown for it. it is not shown in the error messages either, which is disturbing.
what possible purpose does this battery serve, and why is there also one in the display? does anybody have a part number for it, so I can get a replacement on order before I rip the unit apart?
I am aware of the LCD replacement (I have one waiting to install), but was just wondering if there's an internal intensity limit or contrast I can tweak to get a bit more life out of this display before I go that route. I don't see any schematics in these manuals so it's not as helpful as it might be in that regard.
does anybody have a true hardware level 70004A manual with schematics?
all the best,
walter? (walter2 -at- sphere.bc.ca)
|
Walter,
Artek has the CLIP and service manual.
I've emailed you the 2 pages on adjusting the monitor
Chuck
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On 6/29/2017 10:42 AM, walter2@... [hp_agilent_equipment] wrote: Thanks for the info on battery location, I went through the manual, and did not find it, or any parts shown for it. it is not shown in the error messages either, which is disturbing.
what possible purpose does this battery serve, and why is there also one in the display? does anybody have a part number for it, so I can get a replacement on order before I rip the unit apart?
I am aware of the LCD replacement (I have one waiting to install), but was just wondering if there's an internal intensity limit or contrast I can tweak to get a bit more life out of this display before I go that route. I don't see any schematics in these manuals so it's not as helpful as it might be in that regard.
does anybody have a true hardware level 70004A manual with schematics?
all the best,
walter (walter2 -at- sphere.bc.ca)
--
See Early TV at:
www.myvintagetv.com
|
Walter
WE have the schematics/CLIP for the 70004A but there is no schematic
for the A3 display section proper . This usually implies that the
display was originally a3rd party drop in and not a Agilent design
The Service Guide refers to the battery being on the A5 board and
elsewhere talks about a red LED error light relating to a battery
failure. But I did not see a part number for the battery, there is a
crude drawing showing the location on page 4-10 in the service
guide.
Dave
manuals@...
On 6/29/2017 10:42 AM,
walter2@... [hp_agilent_equipment] wrote:
???
Thanks for the info on battery location, I went through
the manual, and did not find it, or any parts shown for
it. it is not shown in the error messages either, which is
disturbing.
what possible purpose does this battery serve, and why is
there also one in the display? does anybody have a part
number for it, so I can get a replacement on order before
I rip the unit apart?
I am aware of the LCD replacement (I have one waiting to
install), but was just wondering if there's an internal
intensity limit or contrast I can tweak to get a bit more
life out of this display before I go that route. I don't
see any schematics in these manuals so it's not as helpful
as it might be in that regard.
does anybody have a true hardware level 70004A manual with
schematics?
all the best,
walter??? (walter2 -at- sphere.bc.ca)
--
Dave
Manuals@...
|
If my memory is correct, the color display is from Sony, probably the same one that was used in some of the 8753 VNAs.
Vladan
|
In mine, the battery is a Tadiran AA 3.6 volt with
axial wire leads. Here is one source. This is also the same battery used in the
70900A/B and also other 70k modules so buy a few if you are into the 70k series
instruments.
?
?
Regards
?
?
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----- Original Message -----
Sent: Thursday, June 29, 2017 11:24
AM
Subject: Re: [hp_agilent_equipment] 70K
MMS Questions
?
Walter
WE have the schematics/CLIP for the 70004A but there is no
schematic for the A3 display section proper . This usually implies that the
display was originally a3rd party drop in and not a Agilent design
The
Service Guide refers to the battery being on the A5 board and elsewhere talks
about a red LED error light relating to a battery failure. But I did not see a
part number for the battery, there is a crude drawing showing the location on
page 4-10 in the service guide.
Dave
manuals@...
On 6/29/2017 10:42 AM, walter2@...
[hp_agilent_equipment] wrote: ?
Thanks for the info on battery location, I went through the manual, and
did not find it, or any parts shown for it. it is not shown in the error
messages either, which is disturbing.
what possible purpose does this
battery serve, and why is there also one in the display? does anybody have a
part number for it, so I can get a replacement on order before I rip the
unit apart?
I am aware of the LCD replacement (I have one waiting to
install), but was just wondering if there's an internal intensity limit or
contrast I can tweak to get a bit more life out of this display before I go
that route. I don't see any schematics in these manuals so it's not as
helpful as it might be in that regard.
does anybody have a true
hardware level 70004A manual with schematics?
all the
best,
walter? (walter2 -at- sphere.bc.ca) --
Dave
Manuals@...
|
thank you, just what I needed to know. it turns out I even have some in stock!
all the best,
walter
|
Hi Walter
Just to clarify for any one reading this later
the battery for the 70900 is solder in
with axial leads
And the battery for the 70004 is not a solder
type
?
From:
hp_agilent_equipment@...
[mailto:hp_agilent_equipment@...]
Sent: 29 June 2017 17:08
To: hp_agilent_equipment@...
Subject: Re:
[hp_agilent_equipment] 70K MMS Questions
?
?
thank
you, just what I needed to know. it turns out I even have some in stock!
all the best,
walter
No virus found in this message.
Checked by AVG -
Version: 2016.0.8013 / Virus Database: 4779/14620 - Release Date: 06/28/17
|
Hi Paul,
?
The battery in my 70004A has axial leads and is
soldered in. It is also in a clip. Maybe they did different types?
?
Regards
?
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Show quoted text
----- Original Message -----
Sent: Thursday, June 29, 2017 5:29
PM
Subject: RE: [hp_agilent_equipment] 70K
MMS Questions
?
Hi Walter
Just to clarify for
any one reading this later
the battery for the
70900 is solder in with axial leads
And the battery for
the 70004 is not a solder type
?
thank
you, just what I needed to know. it turns out I even have some in
stock!
all the best,
walter
No virus found in this message.
Checked
by AVG -
Version:
2016.0.8013 / Virus Database: 4779/14620 - Release Date: 06/28/17
|
hi Walter,
The red ERR LED on the 900a module may just be a temperature warm up time ~ 1 to 5 min., (?) ?to achieve LO oven stability.
Battery ?
rick
|
bownes
Paul Bicknell