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 Post subject: Tek TAS 455
PostPosted: Jul Tue 02, 2013 7:35 pm 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 1234
Location: Chillicothe, Ohio 45601
Well I’m trying to get bench set back up so been looking at equipment and seen this Tek 455 scope that was going for cheap.

http://www.ebay.com/itm/171065452491?ru ... 26_rdc%3D1

Anyway I won it. Anyone know much about these? I found the manual and downloaded it before bidding and I think I will like the cursors functions. I just hope it works right and I don’t have to try to work on it. Looks a lot smaller than my old HP1040A too. Which is good since I hope to be moving soon. I also pick up a RCA WR50B signal generator today. At least I know I can work on it if it doesn’t work. Lol.

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 Post subject: Re: Tek TAS 455
PostPosted: Jul Wed 03, 2013 8:31 pm 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 2219
Location: Harviell MO USA 63945 (12 miles S of Poplar Bluff)
There are a series of scopes that Tek sold that are truly not Tek-made, but are Asian imports -- Korea I think. They did this just to have a low-cost line of scopes. It was a very poor decision on their part, far worse than when they acquired the Telequipment line in the 1970s. Documentation and parts support for these models is poor to non-existant, even if you work within a Tek Service Center. These were sold somewhere in the mid-to-late 1980s as I recall and the low-end of the TAS series is likely in this category. At least the price is OK regardless. You shouldn't lose on this as long as the jug is OK.

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 Post subject: Re: Tek TAS 455
PostPosted: Jul Wed 03, 2013 11:14 pm 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 1234
Location: Chillicothe, Ohio 45601
Thanks Dean, I couldn't find a whole lot out about it before I bid. But I figured if there wasn't a lot of post asking how to fix it they can't be too bad. I read somewhere that it the serial number starts with a B is was US made, if so mine was made in the US.

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 Post subject: Re: Tek TAS 455
PostPosted: Jul Thu 04, 2013 1:03 am 
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Location: Rochester NY USA
The seller calls this a storage oscilloscope, but it appears to be analog only, no storage function. Probably all you'll need. The cursors let you measure P-P voltage (or easily set a P-P level).

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 Post subject: Re: Tek TAS 455
PostPosted: Jul Fri 05, 2013 3:31 am 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 1234
Location: Chillicothe, Ohio 45601
Thanks Tom, I didn't even notice that he called it a storage scope so no problem there.

I've been doing some more research and the TAS 465 and 455 were introduced in 1993. The TAS 455 only appears in the 1993 catalog. Also, according to the Tektronix's page mine was made in the US because the serial number starts with a B

http://www.tek.com/export_codes




Rod

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 Post subject: Re: Tek TAS 455
PostPosted: Jul Thu 11, 2013 12:54 am 
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Joined: Jan Thu 01, 1970 1:00 am
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Location: Chillicothe, Ohio 45601
I got the scope today and everything seems to work. Doesn't seem to be a bad little scope. However being menu driven those of you who are use to using analog scopes probably wouldn't like it. Those of you who are use to digital would feel right at home though.

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 Post subject: Re: Tek TAS 455
PostPosted: Jul Wed 17, 2013 5:52 am 
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Joined: Nov Mon 02, 2009 7:01 am
Posts: 5428
Location: Lincoln City, OR 97367
Just a brief informational note: Tektronix started out and had their main plant in Beaverton, Oregon... which is a suburb of Portland. The "B" in the serial number denotes Beaverton manufactured equipment.

73,
Jim T.

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 Post subject: Re: Tek TAS 455
PostPosted: Jul Thu 18, 2013 4:20 am 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 2219
Location: Harviell MO USA 63945 (12 miles S of Poplar Bluff)
Actually, Tek began in Portland and the serial numbers on the scopes of the 1950s and 1960s had no "B" for a prefix. They later moved to Beaverton and the "B" serials began. As I recall, "E" prefixes were made in Gurnsey.

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