Know anything about a Tektronix 2363 oscilloscope? - Page 1
Forum section: electronics / testgear

author: oh_the_werewolf
author_rank: Newbie
timestamp: June 27, 2016, 01:38:40 am
content: Hi, first post, sorry if this is stupid. I found this oscilloscope at a garage sale today:It appears to be a Tektronix 2363 oscilloscope. But I tried to find info on it in order to figure out how to use it (it's my first oscilloscope or really one of 2 picked up at this sale) and I can't find a reference to this model number anywhere on the web that I looked. 2336, sure, but no 2363. Is this a 2336 with a messed up label? It certainly looks similar to photos of that model.Any thoughts appreciated, sorry if I'm missing something obvious. Thanks!

author: ez24
author_rank: Super Contributor
timestamp: June 27, 2016, 02:22:23 am
content: I wonder if it is valuable like a miss-printed stampMaybe worth a million as one of a kindDoes it work?

author: tautech
author_rank: Super Contributor
timestamp: June 27, 2016, 03:38:14 am
content: Quote from: oh_the_werewolf on June 27, 2016, 01:38:40 amIndeed it does.There's no mention of it here:http://w140.com/tekwiki/wiki/Main_PageAll I can suggest is to get the manual for one that looks the same, that should at least give you enough instruction for basic use.What's the fastest timebase setting? (s/div)

author: KE5FX
author_rank: Super Contributor
timestamp: June 27, 2016, 04:04:51 am
content: Never heard of that one. Check with the TekScopes group on Yahoo Groups?

author: rf-loop
author_rank: Super Contributor
timestamp: June 27, 2016, 04:22:29 am
content: Looks nearly like 2337, missing front panel cover where is also DMM etc.As can see under CH2 and delay adjustment there is also connector for front panel cable.

author: Electro Fan
author_rank: Super Contributor
timestamp: June 27, 2016, 03:10:23 pm
content: Maybe a 2336 that someone repaired (replaced the tube?) and somehow transposed the model number when making a faceplate? Most photos of the 2336 show a serial number below the display - might just be a homemade faceplate.

author: kfitch42
author_rank: Frequent Contributor
timestamp: June 27, 2016, 04:29:25 pm
content: Quote from: Electro Fan on June 27, 2016, 03:10:23 pmLots of details seems to suggest this is not an original Tek faceplate. One other oddity is the probe calibration port. On the 2336 and 2337 it is a hole you stick the probe tip into. The fact we can see "A2" on the front suggests there is something up with the "A2" board aka attenuator board (replace, repaired, borken??). A quick bit of googling sugests there exist freely downloadable service manuals for the 2336 and/or 2336ya. Those might be a good resource if this fellow doesn't work so well, but no gaurentees given the oddities that abound on this scope.

author: ez24
author_rank: Super Contributor
timestamp: June 27, 2016, 05:23:01 pm
content: How about a Chinese counterfeit ? They would likely transpose a number.

author: nctnico
author_rank: Super Contributor
timestamp: June 27, 2016, 06:36:36 pm
content: Quote from: tautech on June 27, 2016, 03:38:14 amThat list isn't complete. I'm missing the Tektronix logic scopes.

author: Martin.M
author_rank: Frequent Contributor
timestamp: June 27, 2016, 06:47:25 pm
content: Kurt have listed them below as logic analyzersIf you have anything he have not in the wiki please give him pictures and datas to enhance that informations.greetingsMartin

author: Jwalling
author_rank: Unknown
timestamp: June 27, 2016, 08:44:48 pm
content: Sure looks like this one that just popped up on Ebay:http://www.ebay.com/itm/Tektronix-2336-Oscilloscope-100MHZ-HARDENED-AUCTION-/401144223285?hash=item5d660f1635:g:8dUAAOSwuhhXVmb0Jay

author: nctnico
author_rank: Super Contributor
timestamp: June 27, 2016, 09:01:15 pm
content: The faceplate is definitely different. It could be a copy indeed!Send it to Dave for a teardown!

author: tautech
author_rank: Super Contributor
timestamp: June 27, 2016, 09:38:31 pm
content: Quote from: Electro Fan on June 27, 2016, 03:10:23 pmI did wonder if it had a storage tube in it, definitely not the normal tube with a blue filter but more like those that have the phosphors for trace persistence.Strange it doesn't have the BW on the front panel as most Teks of this vintage do.I wonder if the OP can give us more pics, one including the handle for another look at model # and a better one of the front panel with better lighting and focus.Would there be more info on the missing front cover, maybe the OP should revisit the seller to see if the cover is available.

author: ez24
author_rank: Super Contributor
timestamp: June 27, 2016, 09:59:17 pm
content: It would be nice if the OP can tell us if it turns on. Maybe it is just an empty box that was used as a pre-production prototype. That might make it valuable.

author: oh_the_werewolf
author_rank: Newbie
timestamp: June 27, 2016, 11:24:50 pm
content: Thanks for all the responses! I guess I'm glad I'm not the only one finding it odd.It does turn on! Here's a trace I was able to get from the calibration port:Somewhat better detail of the controls:The fastest timebase setting seems to be .05 microseconds:

author: siggi
author_rank: Regular Contributor
timestamp: June 27, 2016, 11:41:11 pm
content: This could be an engineering prototype. I think A2 might be the "serial" identifying a near-production specimen. You should mozy over to the TekScopes Yahoo group, and see what those guys say.Sent from my iPad using Tapatalk

author: tautech
author_rank: Super Contributor
timestamp: June 28, 2016, 12:07:53 am
content: Quote from: oh_the_werewolf on June 27, 2016, 11:24:50 pmJust in case you don't know that overshoot trace is a result of an uncompensated probe. Use the wee adjustments either on the probe or the compensation box to adjust the trace to a perfect square wave.QuoteThanks.Interesting it hasn't got a 10 turn vernier for the delayed timebase, to others is that normal for Teks like this?

author: Electro Fan
author_rank: Super Contributor
timestamp: June 28, 2016, 03:21:43 am
content: I think the 10 turn vernier (which I think is the very nice silver knob with nice engraving that looks like a small tumbler lock) is effectively replaced with the A B Time Div knob which in conjunction with the smaller dual knob located near it enabled the time delay display and measurement functions. Just two different approaches developed by Tektronix over the years (or maybe someone decided that plastic cost less than machined metal). Someone will correct me on all this but it's my impression that the 10 turn vernier was probably replaced with the A and B time base controls used on this type of newer model and during this time the Tek scopes began to steadily incorporate more measurement functions including more measurement readouts.http://w140.com/Tektronix-2300-Series_Brochure.pdf- indicates a LCD display was built into the inside of the front cover; this would show the delta time between the A and B traces, in addition to the intensified highlighting shown on the slower of the two traces$4k scope back in the day