Hi,
Yes, that is what I ordered this morning. I have seen smt transistors that looked smaller but i do not plan to try to cover them. The socket will handle sot-23-6 as well. I will look into adding a program card that will extend the number of devices tested. A 6p6t switch would be nice but are way too big.
Jerry Massengale
toggle quoted message
Show quoted text
-----Original Message-----
From: cnc_joker
To: TekScopes
Sent: Fri, Feb 1, 2013 10:11 am
Subject: [TekScopes] Re: sot-23 transistors
?
Are you going to use something like this?
Are there SOT-23 devices that won't fit?
Pete.
--- In TekScopes@..., jerry massengale wrote:
>
>
> Hi,
>
> I am planning my prototype smt transistor adapter and want to obtain an assortment of sot-23 devices. They can be used, new, good, bad. When I was at texas Instruments I could go by the repair stations and get stuff like that by the bucket. If someone could send me some junk smt transistors I would be happy to pay shipping. I am also interested in Dpak and D2pak. Please respond off-list. j_massengale@...
>
>
>
> Jerry Massengale
>
|
Are you going to use something like this?
Are there SOT-23 devices that won't fit?
Pete.
toggle quoted message
Show quoted text
--- In TekScopes@..., jerry massengale wrote:
Hi,
I am planning my prototype smt transistor adapter and want to obtain an assortment of sot-23 devices. They can be used, new, good, bad. When I was at texas Instruments I could go by the repair stations and get stuff like that by the bucket. If someone could send me some junk smt transistors I would be happy to pay shipping. I am also interested in Dpak and D2pak. Please respond off-list. j_massengale@...
Jerry Massengale
|
Hi,
I am planning my prototype smt transistor adapter and want to obtain an assortment of sot-23 devices. They can be used, new, good, bad. When I was at texas Instruments I could go by the repair stations and get stuff like that by the bucket. If someone could send me some junk smt transistors I would be happy to pay shipping. I am also interested in Dpak and D2pak. Please respond off-list.? j_massengale@...
Jerry Massengale
|
Re: TDS 744A colour shutter
I've been posting files to?TekScopArc2 with good results.
George
On Feb 1, 2013, at 6:20 AM, "David C. Partridge" < david.partridge@...> wrote:
?
I think you may have to sign up for the TekScopArc and TekScopArc2 and upload the file(s) to one of those (probably TekScopArc2)
The problem is that the files area of this group is full, so we need to use additional groups to hold files.
The crazy thing is that Yahoo allow 1G for images, but only a 100M for files.
Dave
-----Original Message-----
From: TekScopes@... [mailto:TekScopes@...] On Behalf Of miketakeguess
Sent: 01 February 2013 14:01
To: TekScopes@...
Subject: [TekScopes] Re: TDS 744A colour shutter
I'd be glad to do that, but I don't know how or else I don't have the correct access priveledges. I went to the files page and clicked "add files", but I get a message saying the moderator has disallowed file uploading. Is there another way to do it?
--- In TekScopes@..., "Mark Wendt (Contractor)" wrote:
>
> Mike,
>
> Might be easier to post it in the files section for the group.
>
> Mark
>
> On 1/31/2013 3:28 PM, miketakeguess wrote:
> > I had several emails for this CARTV128.bin, and I believe I responded to all. But if I missed anyone, please feel free to email me and I can send you the file.
> >
> > Mike
> > --- In TekScopes@..., Giampi Redmond wrote:
> >> Hi,
> >> the replacement of the firmware with the Mike's file (CARTV128.bin) has worked for me, it remembers the settings now.
> >> My board is a HCR-N1 V4.
> >> My original firmware, however, was different from AUTO Position.bin probably another release.
> >> Regards.
> >>
> >>
> >>
> >> ________________________________
> >> From: jayw_comark
> >> To: TekScopes@...
> >> Sent: Thursday, January 31, 2013 11:54 AM
> >> Subject: [TekScopes] Re: TDS 744A colour shutter
> >>
> >> Hi Mike,
> >>
> >> Interesting. The same seller sent me the two files you mention, and I tried both - also removing the chip from the board as you did. It didn't seem that either one fixed the problem - not even the CARTV128.BIN but perhaps there is a difference in the files we each have? If you could email me the binary you have, I'd be very grateful.
> >> Thanks!
> >>
> >> Jay
> >>
> >
> >
> >
> > ------------------------------------
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
>
------------------------------------
Yahoo! Groups Links
|
Re: TDS 744A colour shutter
I think you may have to sign up for the TekScopArc and TekScopArc2 and upload the file(s) to one of those (probably TekScopArc2)
The problem is that the files area of this group is full, so we need to use additional groups to hold files.
The crazy thing is that Yahoo allow 1G for images, but only a 100M for files.
Dave
toggle quoted message
Show quoted text
-----Original Message----- From: TekScopes@... [mailto:TekScopes@...] On Behalf Of miketakeguess Sent: 01 February 2013 14:01 To: TekScopes@... Subject: [TekScopes] Re: TDS 744A colour shutter I'd be glad to do that, but I don't know how or else I don't have the correct access priveledges. I went to the files page and clicked "add files", but I get a message saying the moderator has disallowed file uploading. Is there another way to do it? --- In TekScopes@..., "Mark Wendt (Contractor)" wrote:
Mike,
Might be easier to post it in the files section for the group.
Mark
On 1/31/2013 3:28 PM, miketakeguess wrote:
I had several emails for this CARTV128.bin, and I believe I responded to all. But if I missed anyone, please feel free to email me and I can send you the file.
Mike
--- In TekScopes@..., Giampi Redmond wrote:
Hi,
the replacement of the firmware with the Mike's file (CARTV128.bin) has worked for me, it remembers the settings now.
My board is a HCR-N1 V4.
My original firmware, however, was different from AUTO Position.bin probably another release.
Regards.
________________________________
From: jayw_comark
To: TekScopes@...
Sent: Thursday, January 31, 2013 11:54 AM
Subject: [TekScopes] Re: TDS 744A colour shutter
Hi Mike,
Interesting. The same seller sent me the two files you mention, and I tried both - also removing the chip from the board as you did. It didn't seem that either one fixed the problem - not even the CARTV128.BIN but perhaps there is a difference in the files we each have? If you could email me the binary you have, I'd be very grateful.
Thanks!
Jay
------------------------------------
Yahoo! Groups Links
------------------------------------ Yahoo! Groups Links
|
Re: TDS 744A colour shutter
I'd be glad to do that, but I don't know how or else I don't have the correct access priveledges. I went to the files page and clicked "add files", but I get a message saying the moderator has disallowed file uploading. Is there another way to do it?
toggle quoted message
Show quoted text
--- In TekScopes@..., "Mark Wendt (Contractor)" wrote:
Mike,
Might be easier to post it in the files section for the group.
Mark
On 1/31/2013 3:28 PM, miketakeguess wrote:
I had several emails for this CARTV128.bin, and I believe I responded to all. But if I missed anyone, please feel free to email me and I can send you the file.
Mike
--- In TekScopes@..., Giampi Redmond wrote:
Hi,
the replacement of the firmware with the Mike's file (CARTV128.bin) has worked for me, it remembers the settings now.
My board is a HCR-N1 V4.
My original firmware, however, was different from AUTO Position.bin probably another release.
Regards.
________________________________
From: jayw_comark
To: TekScopes@...
Sent: Thursday, January 31, 2013 11:54 AM
Subject: [TekScopes] Re: TDS 744A colour shutter
Hi Mike,
Interesting. The same seller sent me the two files you mention, and I tried both - also removing the chip from the board as you did. It didn't seem that either one fixed the problem - not even the CARTV128.BIN but perhaps there is a difference in the files we each have? If you could email me the binary you have, I'd be very grateful.
Thanks!
Jay
------------------------------------
Yahoo! Groups Links
|
Re: Service Maual for TM502 frame
and the rare TM515 as I recall
On 2/1/2013 6:29 AM, Mark Wendt (Contractor) wrote:
?
Dennis,
All I have is a TM504 and a TM5006. I did not know the
TM506 had a fan
in it. Learn something new every day on this list!
Mark
On 1/31/2013 4:16 PM, Dennis Tillman wrote:
> The fans probably help a bit too. But the TM506 has a
fan and your plugin
> would run hotter in the TM506 than in the TM5006
because of the lower
> voltage in the TM5006.
>
> -----Original Message-----
> From: TekScopes@...
[mailto:TekScopes@...]
On Behalf
> Of Mark Wendt
> Sent: Thursday, January 31, 2013 2:15 AM
> To: TekScopes@...
> Subject: Re: [TekScopes] Re: Service Maual for TM502
frame
>
> Dennis,
>
> Thanks for that. I just assumed it was the fans...
;-)
>
> Mark
>
> On 01/30/2013 12:57 PM, Dennis Tillman wrote:
>> Mark,
>>
>> Your plugins run cooler because the TM5006 and
TM5003 regulate the DC
> supply voltages unlike the TM5xx mainframes. As a
result the TM5xx would be
> providing 11.5VDC when lightly loaded and at least
7.6VDC under full load.
> The TM5006 will be providing a much more tightly
regulated 8VDC nominal
> (8.5VDC and 7.6VDC are the limits) to your plugin
regardless of the
> mainframe load.
>> The same is true of the +/-33.5VDC supplies in
the TM500 mainframes. They
> are regulated to a nominal +/-26VDC in the TM5000
mainframes.
>> This is good and bad. Some of the older plugins
were designed with the
> expectation of a higher voltage (11.5VDC) being
available on the TM500
> mainframes and they just barely operate on the 8.5VDC
of the TM5000
> mainframes. Ditto for the +/-33.5VDC supplies.
>> Dennis
>>
>> -----Original Message-----
>> From: Mark Wendt, Sent: Wednesday, January 30,
2013 2:21 AM
>>
>> On 01/29/2013 05:51 PM, Dennis Tillman wrote:
>>> As you probably discovered by now, there was
no TM502. There was only
>>> a TM502A.
>>>
>>> All of the TM5xx mainframes are virtually
identical in the most
>>> important respect how power is provided to
the plugins. They all use
>>> a classic transformer power supply. So if you
have schematics for one
>>> TM5xx power supply almost everything will be
similar in you TM502
>>> except for the location of the parts and some
parts values.
>>>
>>> The TM5003 and TM5006 used switching power
supplies to save weight so
>>> they are significantly different! .
>>>
>> And the TM5006 keeps my plugins running cooler!
;-)
>>
>> Mark
>>
>>
>>
>> ------------------------------------
>>
>> Yahoo! Groups Links
>>
>>
>>
>>
>
>
> ------------------------------------
>
> Yahoo! Groups Links
>
>
>
>
>
> ------------------------------------
>
> Yahoo! Groups Links
>
>
>
>
--
Dave Henderson
Manuals@...
PO Box 175
Welch,MN 55089
651-269-4265
|
Re: Service Maual for TM502 frame
Dennis,
All I have is a TM504 and a TM5006. I did not know the TM506 had a fan in it. Learn something new every day on this list!
Mark
toggle quoted message
Show quoted text
On 1/31/2013 4:16 PM, Dennis Tillman wrote: The fans probably help a bit too. But the TM506 has a fan and your plugin
would run hotter in the TM506 than in the TM5006 because of the lower
voltage in the TM5006.
-----Original Message-----
From: TekScopes@... [mailto:TekScopes@...] On Behalf
Of Mark Wendt
Sent: Thursday, January 31, 2013 2:15 AM
To: TekScopes@...
Subject: Re: [TekScopes] Re: Service Maual for TM502 frame
Dennis,
Thanks for that. I just assumed it was the fans... ;-)
Mark
On 01/30/2013 12:57 PM, Dennis Tillman wrote:
Mark,
Your plugins run cooler because the TM5006 and TM5003 regulate the DC supply voltages unlike the TM5xx mainframes. As a result the TM5xx would be
providing 11.5VDC when lightly loaded and at least 7.6VDC under full load.
The TM5006 will be providing a much more tightly regulated 8VDC nominal
(8.5VDC and 7.6VDC are the limits) to your plugin regardless of the
mainframe load.
The same is true of the +/-33.5VDC supplies in the TM500 mainframes. They are regulated to a nominal +/-26VDC in the TM5000 mainframes.
This is good and bad. Some of the older plugins were designed with the expectation of a higher voltage (11.5VDC) being available on the TM500
mainframes and they just barely operate on the 8.5VDC of the TM5000
mainframes. Ditto for the +/-33.5VDC supplies.
Dennis
-----Original Message-----
From: Mark Wendt, Sent: Wednesday, January 30, 2013 2:21 AM
On 01/29/2013 05:51 PM, Dennis Tillman wrote:
As you probably discovered by now, there was no TM502. There was only
a TM502A.
All of the TM5xx mainframes are virtually identical in the most
important respect how power is provided to the plugins. They all use
a classic transformer power supply. So if you have schematics for one
TM5xx power supply almost everything will be similar in you TM502
except for the location of the parts and some parts values.
The TM5003 and TM5006 used switching power supplies to save weight so
they are significantly different! .
And the TM5006 keeps my plugins running cooler! ;-)
Mark
------------------------------------
Yahoo! Groups Links
------------------------------------
Yahoo! Groups Links
------------------------------------
Yahoo! Groups Links
|
Re: TDS 744A colour shutter
Mike,
Might be easier to post it in the files section for the group.
Mark
toggle quoted message
Show quoted text
On 1/31/2013 3:28 PM, miketakeguess wrote: I had several emails for this CARTV128.bin, and I believe I responded to all. But if I missed anyone, please feel free to email me and I can send you the file.
Mike
--- In TekScopes@..., Giampi Redmond wrote:
Hi,
the replacement of the firmware with the Mike's file (CARTV128.bin) has worked for me, it remembers the settings now.
My board is a HCR-N1 V4.
My original firmware, however, was different from AUTO Position.bin probably another release.
Regards.
________________________________
From: jayw_comark
To: TekScopes@...
Sent: Thursday, January 31, 2013 11:54 AM
Subject: [TekScopes] Re: TDS 744A colour shutter
Hi Mike,
Interesting. The same seller sent me the two files you mention, and I tried both - also removing the chip from the board as you did. It didn't seem that either one fixed the problem - not even the CARTV128.BIN but perhaps there is a difference in the files we each have? If you could email me the binary you have, I'd be very grateful.
Thanks!
Jay
------------------------------------
Yahoo! Groups Links
|
Re: OT: Resolving "undershoot" on 74LS logic
Hmmmm Stranger and stranger,
The outputs of the LS02 which go any distance on the board appear clean (including the main clock signals which actually go off the processor board via ribbon cable to the logic baord), but pin 10 has this undershoot and only connects to pin 11, and pin 1 which also does the same only seems to connect to the test point.
Maybe this chip isn't the culprit for the .66uS bursts of RF on all the supplies, it may just be that the 1.5MHz clock goes everywhere and therefore sprays itself into all the supplies.
Dave
________________________________
From: TekScopes@... [mailto:TekScopes@...] On Behalf Of jerry massengale
Sent: 01 February 2013 03:03
To: TekScopes@...
Subject: Re: [TekScopes] OT: Resolving "undershoot" on 74LS logic
Hi,
Diode clamp? Does the ls02 have a good ground?
Jerry Massengale
|
Joe Trantham - Please email me off list regarding the P6015A
Joe, I have tried repeatedly to email you regarding your inquiry at your registered address and my messages all bounce. - Do you have another email address?
Thanks, Pete Davie
|
Re: OT: Resolving "undershoot" on 74LS logic
Thanks to all (not just Jerry). I am pretty sure it isn't the ground lead as the input (from the 68B09 E pin) which is pretty much as fast is quite clean, but will try a 500R probe later today.
The ground is good to the ground pin, but there isn't a good ground near the supply pin :(
It looks like 74ALS includes a schottky output clamp, and I therefore assume 74HC(T) logic does too?
If a diode clamp doesn't do it I will try the series R ...
Anyone know of a convenient PI I can steal a leaded schottky diode from - 7A18, 7A19, 7B92, and 7S11 parts mules are available.
Cheers
Dave
________________________________
From: TekScopes@... [mailto:TekScopes@...] On Behalf Of jerry massengale
Sent: 01 February 2013 03:03
To: TekScopes@...
Subject: Re: [TekScopes] OT: Resolving "undershoot" on 74LS logic
Hi,
Diode clamp? Does the ls02 have a good ground?
Jerry Massengale
|
Re: Tektronix 585 - UPDATE
Good Day Victor,
nice catch and a superb o'scope you got there.
On the value of your 585A, please do not get disappointed.
However, I have seen a 585 type (non-A) in working condition with a Type 82 plugin which has been sold for 41 GBP :-| see eBay item # 110988326141.
Just use it for good in your labs...
Cheers,
Magnus
|
Re: OT: Resolving "undershoot" on 74LS logic
Agree with Ed. The series resistor shall be placed close to the transmitter end and not to the receiver end.
G?ran
?
|
Re: P6015 Freon 114 is ready to go :)
On Thu, 31 Jan 2013, Byron Hayes, Jr. wrote: The address is correct but I do have very agressive spam filters that bounce everything coming from usual spam nests. Earthlink is one of them :) For such occasions I do have "whitelist" where I put everybody whose mail should be accepted no matter where he comes from. I added your email to the list and now it should go through. Just in case somebody needs to send me an email but my sendmail bounces it you can use a "Contact us" webform on my small business site, and tell what your email is. This will be forwarded to me immediately and I'll add your email to the white list and send you a confirmation email right away. I do everything myself, don't believe in any automatic blacklisting... As for Freon 114 -- I still have something like 10 bottles on hand so I can take up to 10 more orders to pack this weekend and ship out this coming Monday. Freon itself I do have (you saw that big jug, right? :)), it is those aluminum bottles that I might temporarily run out of... Sergey,
I would like to purchase a bottle of your Freon 114 per your email below. I have a P6015 with an empty Freon can. Unless you are oversubscribed, I will send the $35.00 through PayPal right away. Please let me know. Thank you.
BTW, I tried to contact you directly at "ksi@..." (without the quote marks, of course) but it "bounced" twice. . Please confirm if this address is correct.
Byron Hayes, Jr. WA6ATN
4256 Navajo Ave.
Toluca Lake, CA 91602-2914
(818) 752-4653
bhayes@...
At 11:12 PM 1/30/2013, you wrote:
Hi everybody,
I finally have that Freon 114 for Tektronix P6015 probes ready to go. I
uploaded 2 photos in Freon114 album so everybody can look at the original
30lb jug and the bottle I'll be shipping it in.
It is actually very easy to work on. It feels much like diethyl ether just
colder. Similar chloroform-like smell, similar cold feeling, no frostbyte...
Very easy to fill those bottles -- attach a stock refrigerant hose to the
jug, put jug upside down, open the valve one full turn and it flows like
water from a faucet... Starts boiling on contact with the room temperature
bottle but almost immediately cools down and boiling stops. Pressure in the
bottle at room temperature is not high so it is safe. It is quite dense, way
heavier than water and vapor is very heavy -- it flows like water.
Should be very easy to use -- just put it into a household freezer for an
hour or so before opening and it pours like water, nothing special.
So everybody who needs it can get it right now. As I already told it is $25
for 100ml plus $3 for the bottle. I don't want to bother with pennies on
shipping charges, PayPal fees etc, so let's make it $7 flat for shipping
within continental US and everything else. That makes it $35 shipped.
Those bottles are actually not all that bad and they have a plug in addition
to that tamper-proof cap. Bottles are 125ml filled with 100ml of freon.
Everybody who worked with refrigerants knows that all the cylinders must be
filled for not more than 80% of their actual volume to give room for vapor
pressure. It might be not that important for high boiling R-114 but anyways
better be safe than sorry...
I can also fill your bottles if you want so, just ship them to me. It
doesn't make much sense because you'll spend more on shipping than my
bottles cost but anyways...
Payment is via PayPal to ksi-at-koi8-dot-net. I have 25 those bottles on
hand. If there is more takers I'll have to order another 25. This takes a
week -- they are shipped from Florida UPS ground and it takes time to
deliver them to Las Vegas...
I will be packing them on weekends and they will be picked up on Mondays.
Everybody who paid before Sunday will have their box shipped on Monday.
Those who paid later will have their boxes packed next Sunday and shipped
out the following Monday.
As a side note -- one never knows what treasure he might find on garage sale
that he happened to drive by :) It was not actually a full 30lb jug, just
30lb gross weight but it is still 24lb+ of Freon 114 left in that jug that
should be enough for everyone for a long while...
---
*
* KSI@home KOI8 Net < > The impossible we do immediately. *
* Las Vegas NV, USA < > Miracles require 24-hour notice. *
*
------------------------------------
Yahoo! Groups Links
--- * * KSI@home KOI8 Net < > The impossible we do immediately. * * Las Vegas NV, USA < > Miracles require 24-hour notice. * *
|
Just for the records: 7A29 arrived, and I can confirm that I don't see any noise difference between it and the 7A19 I already had. Thanks again for your help!
Samuel
|
Re: P6015 Freon 114 is ready to go :)
Sergey,
I would like to purchase a bottle of your Freon 114 per your email
below.? I have a P6015 with an empty Freon can.? Unless you are
oversubscribed, I will send the $35.00 through PayPal right away.?
Please let me know.? Thank you.
BTW, I tried to contact you directly at "ksi@..." (without
the quote marks, of course) but it "bounced" twice. .?
Please confirm if this address is correct.
Byron Hayes, Jr. WA6ATN
4256 Navajo Ave.
Toluca Lake, CA 91602-2914
(818) 752-4653
bhayes@...
At 11:12 PM 1/30/2013, you wrote:
toggle quoted message
Show quoted text
Hi everybody,
I finally have that Freon 114 for Tektronix P6015 probes ready to go.
I
uploaded 2 photos in Freon114 album so everybody can look at the
original
30lb jug and the bottle I'll be shipping it in.
It is actually very easy to work on. It feels much like diethyl ether
just
colder. Similar chloroform-like smell, similar cold feeling, no
frostbyte...
Very easy to fill those bottles -- attach a stock refrigerant hose to
the
jug, put jug upside down, open the valve one full turn and it flows
like
water from a faucet... Starts boiling on contact with the room
temperature
bottle but almost immediately cools down and boiling stops. Pressure in
the
bottle at room temperature is not high so it is safe. It is quite dense,
way
heavier than water and vapor is very heavy -- it flows like
water.
Should be very easy to use -- just put it into a household freezer for
an
hour or so before opening and it pours like water, nothing
special.
So everybody who needs it can get it right now. As I already told it is
$25
for 100ml plus $3 for the bottle. I don't want to bother with pennies
on
shipping charges, PayPal fees etc, so let's make it $7 flat for
shipping
within continental US and everything else. That makes it $35
shipped.
Those bottles are actually not all that bad and they have a plug in
addition
to that tamper-proof cap. Bottles are 125ml filled with 100ml of
freon.
Everybody who worked with refrigerants knows that all the cylinders must
be
filled for not more than 80% of their actual volume to give room for
vapor
pressure. It might be not that important for high boiling R-114 but
anyways
better be safe than sorry...
I can also fill your bottles if you want so, just ship them to me.
It
doesn't make much sense because you'll spend more on shipping than
my
bottles cost but anyways...
Payment is via PayPal to ksi-at-koi8-dot-net. I have 25 those bottles
on
hand. If there is more takers I'll have to order another 25. This takes
a
week -- they are shipped from Florida UPS ground and it takes time
to
deliver them to Las Vegas...
I will be packing them on weekends and they will be picked up on
Mondays.
Everybody who paid before Sunday will have their box shipped on
Monday.
Those who paid later will have their boxes packed next Sunday and
shipped
out the following Monday.
As a side note -- one never knows what treasure he might find on garage
sale
that he happened to drive by :) It was not actually a full 30lb jug,
just
30lb gross weight but it is still 24lb+ of Freon 114 left in that jug
that
should be enough for everyone for a long while...
---
*
*? KSI@home??? KOI8 Net? < >? The
impossible we do immediately.? *
*? Las Vegas?? NV, USA?? < >?
Miracles require 24-hour notice.?? *
*
------------------------------------
Yahoo! Groups Links
<*> To visit your group on the web, go to:
???
<*> Your email settings:
??? Individual Email | Traditional
<*> To change settings online go to:
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<*> To change settings via email:
??? TekScopes-digest@...
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<*> To unsubscribe from this group, send an email to:
??? TekScopes-unsubscribe@...
<*> Your use of Yahoo! Groups is subject to:
???
|
Re: 7A18 volts/div switch contact cleaning
Doh! I found that putting a vertical plug-in into the left most slot so I could reach the adjustments on the right side was not effective but maybe you can manage it. I cut one of my tuning tools in half and shortened it so I could reach the TCXO frequency adjustment inside my HP 5315A because a longer tool would not fit at all. On Fri, 01 Feb 2013 05:34:42 -0000, "Mover" <priya_jakatdar@...> wrote: I have a R7704 rack mounted unit - the CRT is on the left. But your note gave me an idea - perhaps I can put the 7A18 in the right vertical slot, leave the left empty and see if I can get a small screw driver to fit in the empty slot. Will try that tomorrow.
Priya.
--- In TekScopes@..., David wrote:
If you remove the left cover panel on your 7000 mainframe, you can
reach most if not all of the 7A18 calibration adjustments.
On Fri, 01 Feb 2013 04:11:48 -0000, "Mover"
wrote:
Thanks to everyone who responded - I was able to clean the 2 contacts for the 10X attenuation and the deflection now works fine. I put a few drops of isopropyl alcohol on the contacts with a small dropper and moved the knob back and forth 15 or 20 times. Never actually touched the contacts with anything per notes below.
So now that the gain is right, I have to adjust the compensation caps for which I need an extender. The one on eBay is far out of my reach financially. How do you guys set the comp caps without an extender card or extension cable?
Again, thanks for your assistance with the deflection contact points.
Priya Jakatdar.
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Re: 7A18 volts/div switch contact cleaning
I have a R7704 rack mounted unit - the CRT is on the left. But your note gave me an idea - perhaps I can put the 7A18 in the right vertical slot, leave the left empty and see if I can get a small screw driver to fit in the empty slot. Will try that tomorrow.
Priya.
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--- In TekScopes@..., David wrote:
If you remove the left cover panel on your 7000 mainframe, you can
reach most if not all of the 7A18 calibration adjustments.
On Fri, 01 Feb 2013 04:11:48 -0000, "Mover"
wrote:
Thanks to everyone who responded - I was able to clean the 2 contacts for the 10X attenuation and the deflection now works fine. I put a few drops of isopropyl alcohol on the contacts with a small dropper and moved the knob back and forth 15 or 20 times. Never actually touched the contacts with anything per notes below.
So now that the gain is right, I have to adjust the compensation caps for which I need an extender. The one on eBay is far out of my reach financially. How do you guys set the comp caps without an extender card or extension cable?
Again, thanks for your assistance with the deflection contact points.
Priya Jakatdar.
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Re: 7A18 volts/div switch contact cleaning
If you remove the left cover panel on your 7000 mainframe, you can reach most if not all of the 7A18 calibration adjustments. On Fri, 01 Feb 2013 04:11:48 -0000, "Mover" <priya_jakatdar@...> wrote: Thanks to everyone who responded - I was able to clean the 2 contacts for the 10X attenuation and the deflection now works fine. I put a few drops of isopropyl alcohol on the contacts with a small dropper and moved the knob back and forth 15 or 20 times. Never actually touched the contacts with anything per notes below.
So now that the gain is right, I have to adjust the compensation caps for which I need an extender. The one on eBay is far out of my reach financially. How do you guys set the comp caps without an extender card or extension cable?
Again, thanks for your assistance with the deflection contact points.
Priya Jakatdar.
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Glydeck
David C. Partridge
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