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Re: My 2465BDM just arrived!!
Chuck Harris
I swear I typed 6 torx screws, but my pet sprite changed it
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to an 8. Grrr! -Chuck Harris Chuck Harris wrote: I don't mean to scare you, and certainly not to admonish you. |
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Re: My 2465BDM just arrived!!
Chuck Harris
I don't mean to scare you, and certainly not to admonish you.
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The case comes off with 8 torx screws through the feet, and two through the back panel...above and below the plug. After the back is removed, the case slides off of the back. You have to watch a couple of cables and spring clips when you slide the case back on. Don't get aggressive tightening the screws in the plastic panel. Since your serial number is in the B014 range, A5 capacitor electrolyte leakage should not be a problem. Most power supplies will have at least one bad capacitor, typically the inverter filter for the -15V supply. Its total failure doesn't cause much, if any, damage. Enjoy your scope. -Chuck Harris Lawrance A. Schneider wrote: Thank you Chuck; Very bright and sharp - no halo. Fastest speed is 5 nano - at that speed, trace is easy to see. I hear you admonition; I'll wait a little - maybe never if everything is OK. |
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Re: My 2465BDM just arrived!!
Bob¡¯s suggestion refers to date codes on the components. They are certainly there. They will all largely indicate the same timeframe (usually year and week number) which will give you an idea of the manufacture date of the ¡®scope.
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DaveD Sent from a small flat thingy On Aug 8, 2019, at 17:29, Lawrance A. Schneider <llaassllaaass@...> wrote: |
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Re: My 2465BDM just arrived!!
Thank you Chuck; Very bright and sharp - no halo. Fastest speed is 5 nano - at that speed, trace is easy to see. I hear you admonition; I'll wait a little - maybe never if everything is OK.
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Thank you Bob; no revision date shown. One further question. Is there anything ¡¯special¡¯ about the DM probes? I got 4 P6139a probes with it but no DMM probes. I would think any of my Fluke or other secondary market probes would be OK. Thank you , larry On Aug 8, 2019, at 4:57 PM, Bob Albert via Groups.Io <bob91343@...> wrote: |
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Re: 2712 SA that thinks it is a 2714
On Thu, Aug 08, 2019 at 02:03:37PM -0700, Bob Koller via Groups.Io wrote:
Thanks Dave,I remember some on the main motherboard in particular. -- Dave Emery N1PRE/AE, die@... DIE Consulting, Weston, Mass 02493 "An empty zombie mind with a forlorn barely readable weatherbeaten 'For Rent' sign still vainly flapping outside on the weed encrusted pole - in celebration of what could have been, but wasn't and is not to be now either." |
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Re: 2712 SA that thinks it is a 2714
Bob
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I have the 2714 service manual ?I Thought at first that someone may have swapped a board from a parts unit but the microprocessor board in the 2712 and the 2714 is the same, Dave Emery may be more on the right track about a zero ohm resistor on the mother board. I will look through the 2714 manual closer later tonight..headed out the door right now Dave manuals@... On 8/8/2019 4:50 PM, Bob Koller via Groups.Io wrote:
Hi Dave, --
Dave Manuals@... www.ArtekManuals.com |
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Re: My 2465BDM just arrived!!
Bob Albert
You can? approximate the age of the unit by opening it and looking for component date codes.? Sometimes on turn-on there is an information screen with a software/firmware revision date.
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Bob On Thursday, August 8, 2019, 01:11:09 PM PDT, Lawrance A. Schneider <llaassllaaass@...> wrote:
Hello all, My new (to me) 2465BDM just arrived.? Turning it on, all passed and gave me four lines - one for each channel. I tried each channel in turn with my function generator and each worked fine.? I will be testing the calibration over time. What I wanted to know is how to tell the age and turn on times.? I thought there was a way of doing so.? I can¡¯t find it in the manual.? Perchance I¡¯m wrong and there is no way of knowing.? Further, I remember reading that those scopes with serial number above B05xxx needed their Caps replaced.? My number is B014xxx.? Thus, I think I¡¯m OK until I have more time to tear the thing apart. I¡¯ll be selling my 2465 (300 Meg) as soon as I begin to feel comfortable with the new addition. Thanks for any answers,??? ??? larry |
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Re: 2712 SA that thinks it is a 2714
On Thu, Aug 08, 2019 at 11:09:54AM -0700, Bob Koller via Groups.Io wrote:
I have a 2712 spectrum analyzer that thinks it is a 2714 (CATV) unit. The firmware installed is applicable to all the models, so it would seem that somewhere there is a jumper, or something, that tells the processor what the model is.Many years ago I found there were some zero ohm resisters that enabled or disabled various personalities and options for this family. Not clearly shown on the published schematics IIRC. But obvious on the motherboard. Some other options depend on having a board present and sensed at bootup. If you have a "real" 2712 you can look at it might be worth comparing (cellphone photos help with this) all the zero ohm resistors you can find, and in general look for parts stuffing differences. -- Dave Emery N1PRE/AE, die@... DIE Consulting, Weston, Mass 02493 "An empty zombie mind with a forlorn barely readable weatherbeaten 'For Rent' sign still vainly flapping outside on the weed encrusted pole - in celebration of what could have been, but wasn't and is not to be now either." |
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Re: 2712 SA that thinks it is a 2714
Bob Koller
Hi Dave,
My 2712 thinks it is a 2714/15 CATV analyzer, displaying Channels, and RF input in DBMV. There are also other Menu items pertaining to CATV. On the Digital Storage board there is a term ENB2714\I, that when hi, enables 2714 mode. I have not been able to locate how the uP knows set this term hi. There must be some uP port somewhere with a jumper, pullup, etc, that enables this function, but I cannot find it. I have carefully looked through both the 2712 SM, late version, and the 2715 SM, to no avail. |
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Re: My 2465BDM just arrived!!
Chuck Harris
Although the scope has a set of counters/timers that can be reached
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through the calibration mode, it is not intended to be a reliable indication of the age or use of your scope over its lifetime... just a gauge of how it was used since the last service, or calibration. The calibration technician will reset these numbers to zero, when he reaches that point in the calibration routine. Charltons will always set them to zero to make the unwary buyer think he is getting something he isn't. Don't fixate on these numbers! The best gauge of your scope's age is how the CRT looks when it is displaying a 6 division P-P 10 MHz sinewave at 100ns/div. Apply the sinewave, and turn your intensity to full, and look at what the beam looks like. If it is dim with a distinct halo, your CRT is old. If it is so bright it looks dangerous, it is fine. If your CRT can't display a 100KHz rep rate step function at 500ps/div that is readable in normal light, it is old. If your scope has a serial number greater than B050000, its A5 board must be checked for electrolyte leakage now. As an aside, the BDM is the hardest of the family to work on by a long shot. It is not a good scope on which to learn scope repair. -Chuck Harris Lawrance A. Schneider wrote: Hello all, |
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Re: 2712 SA that thinks it is a 2714
I may be able to help you but since the original post was not appended I am not sure what the problem is?
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Dave NR1DX On 8/8/2019 4:30 PM, Bob Koller via Groups.Io wrote:
Oh, and I have scoured both the 2712 and 2715 (apparently a 2714 with minor difference), service manuals without success. --
Dave Manuals@... www.ArtekManuals.com |
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My 2465BDM just arrived!!
Hello all,
My new (to me) 2465BDM just arrived. Turning it on, all passed and gave me four lines - one for each channel. I tried each channel in turn with my function generator and each worked fine. I will be testing the calibration over time. What I wanted to know is how to tell the age and turn on times. I thought there was a way of doing so. I can¡¯t find it in the manual. Perchance I¡¯m wrong and there is no way of knowing. Further, I remember reading that those scopes with serial number above B05xxx needed their Caps replaced. My number is B014xxx. Thus, I think I¡¯m OK until I have more time to tear the thing apart. I¡¯ll be selling my 2465 (300 Meg) as soon as I begin to feel comfortable with the new addition. Thanks for any answers, larry |
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Re: Does anyone have any info on the 2466B scope?
Wow, not much info out there!? ?I think the 2466BHD might actually be a typo (2467BHD).? I looked at all the catalogs I have and found no mention of it.? Could it be an asia-specific model?? (not sure why, except most references are asian, as is the cal sticker in the tekwiki photo).? A few references turned out to be OCR misreads.? Good luck!
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-Dave On Thursday, August 8, 2019, 09:42:00 AM PDT, Ken Eckert <eckertkp@...> wrote:
From what I see on Teks FAQ, its 400 Mhz HDTV high brightness. So perhaps a different CRT and ?? I searched using Tektronix 2466, Tek called it a 2466BHD On Thursday, August 8, 2019, Jared Cabot via Groups.Io <jaredcabot= [email protected]> wrote: Hi all. |
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Re: Does anyone have any info on the 2466B scope?
From what I see on Teks FAQ, its 400 Mhz HDTV high brightness. So perhaps a
different CRT and ?? I searched using Tektronix 2466, Tek called it a 2466BHD On Thursday, August 8, 2019, Jared Cabot via Groups.Io <jaredcabot= [email protected]> wrote: Hi all. |
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Does anyone have any info on the 2466B scope?
Hi all.
I came across a Tek 2466B scope for sale and am trying to figure out where it sits compared to the 2465 and 2467 series of scopes. I can't seem to find any real information on this model online and was wondering if anyone knew anything about it? I would really like to get a 2467B eventually, but I'm wondering how this 2466B stacks up. Can anyone shed any light on this one? Thanks! |
Jared Cabot
John Bennett
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