Author Topic: List your test equipment "scores" here!  (Read 466174 times)

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Offline rdl

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Re: List your test equipment "scores" here!
« Reply #150 on: March 22, 2015, 08:49:53 am »
Seeing the Tektronix CDM250 motivated me to take a photo of the CPS250 I got a few weeks ago. These are pretty decent power supplies, well suited for someone just getting started. I don't know who actually built these, but I read somewhere that maybe they were sourced from Topward.

Apparently BK Precision also sold this unit as the 1651. BK rated theirs as 24 volts at 500 mA from the variable supplies vs. the 20 volts of the CPS250, and 3 amps from the 5 volt supply vs the 2 amps of the CPS250. They seem to be identical to me, maybe Tek was just being more conservative with their ratings. BK still sells a 1651A.

These are definitely worth considering if you don't mind taking chances on used equipment and can find one in good shape for $100 or less. There are always people trying to sell these for $300-400 just because of the Tektronix name I guess. Don't fall for that. Also be aware that there are several different front panel color schemes. This is one of the better ones. The BK olive green and mustard brown is pretty bad.

 

Offline nanofrog

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Re: List your test equipment "scores" here!
« Reply #151 on: March 22, 2015, 09:00:57 am »
Nice score. :-+

Doesn't look abused, and an excellent job on the cleaning & restoration (new output terminals?)! Looks like it came off the assembly line maybe a month ago.  :clap:
 

Offline dkozel

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Re: List your test equipment "scores" here!
« Reply #152 on: March 22, 2015, 09:19:13 am »
I was in the right place at the right time.

Anritsu S332D cable, antenna, and spectrum analyzer with power meter option - $0
Metcal MX-5211 full set with a stack of tips - $25

 

Offline drakke

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Re: List your test equipment "scores" here!
« Reply #153 on: March 22, 2015, 10:39:14 am »
Seeing the Tektronix CDM250 motivated me to take a photo of the CPS250 I got a few weeks ago. These are pretty decent power supplies, well suited for someone just getting started.


Are there any irreplaceable parts inside?
Are they difficult to repair?
 

Offline rdl

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Re: List your test equipment "scores" here!
« Reply #154 on: March 22, 2015, 09:24:13 pm »
Believe it or not, that's pretty much the way I received it. All I did was add a pot inside so I could dim down the entirely too bright power LED, and I switched the voltage and current control knobs with those on my BK 1651. The Tek's knobs had turned kind of brown and the ones on the BK were a better color match.

Nice score. :-+

Doesn't look abused, and an excellent job on the cleaning & restoration (new output terminals?)! Looks like it came off the assembly line maybe a month ago.  :clap:
 

Offline drakke

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Re: List your test equipment "scores" here!
« Reply #155 on: March 23, 2015, 12:35:06 am »
Believe it or not, that's pretty much the way I received it. All I did was add a pot inside so I could dim down the entirely too bright power LED, and I switched the voltage and current control knobs with those on my BK 1651.



They have glass fuses inside, correct?

Is it ok to replace them with comparable ceramic ones?
 

Offline dom0

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Re: List your test equipment "scores" here!
« Reply #156 on: March 23, 2015, 01:04:18 am »
Believe it or not, that's pretty much the way I received it. All I did was add a pot inside so I could dim down the entirely too bright power LED, and I switched the voltage and current control knobs with those on my BK 1651.



They have glass fuses inside, correct?

Is it ok to replace them with comparable ceramic ones?
If the specs match...
,
 

Offline rdl

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Re: List your test equipment "scores" here!
« Reply #157 on: March 23, 2015, 06:10:20 am »
They have glass fuses inside, correct?

Is it ok to replace them with comparable ceramic ones?

Same as most things which plug into mains power, they are fused. The fuse holder is on the back panel. For 120 volt service Tektronix calls for 2A 250V, BK Precision specifies 1.6A 250V. They are glass.

Are there any irreplaceable parts inside?
Are they difficult to repair?

The service manual is available. It's too big to post here but a google search should find it. Some things, such as the transformer and meters would be a problem to replace, but it's mostly jellybean parts. I think the only ICs are 741 and LM358 op amps, and 723 regulators.
 

Offline JackP

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Re: List your test equipment "scores" here!
« Reply #158 on: March 24, 2015, 04:46:12 am »
May I ask how much you fine gentlemen think a Tektronix 1503TDR Cable Tester is worth (with error: screen does not power up, no further information). Thanks a bunch.
Want to know more about 'scopes? Click here to check out my Oscilloscope Basics eBook series.
 

Offline xwarp

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Re: List your test equipment "scores" here!
« Reply #159 on: March 24, 2015, 07:50:45 pm »
I picked up a really nice condition Panasonic Toughbook CF-30 with just over 2000 hours on it. Came with DVD drive, hard drive caddy, battery and power plug.

It falls under test equipment because I will be using it with OBD1 and OBD2 software.
 

Offline nanofrog

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Re: List your test equipment "scores" here!
« Reply #160 on: March 24, 2015, 10:40:00 pm »
Quote from: xwarp link=topic=30053.msg636091#msg636091 date=1427187045[Panasonic Toughbook CF-30
... falls under test equipment because I will be using it with OBD1 and OBD2 software.
Too many uses not to be in general IMHO (data analysis, research, T&M automation, code development, CAD, ...).  :-+
 

Offline The Doc

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Re: List your test equipment "scores" here!
« Reply #161 on: March 27, 2015, 05:40:57 am »
Some more old toys arrived today...  8)






Too old to die young
 

Offline meeder

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Re: List your test equipment "scores" here!
« Reply #162 on: March 27, 2015, 09:44:38 am »
My best scores were free :)

Fluke 97 scopemeter (which is actually a Philips design with Fluke badges)
Philips PM3050 50MHz scope

Both units were destined for the dumpster if I did not rescue them :)
 

Offline blackbird

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Re: List your test equipment "scores" here!
« Reply #163 on: March 27, 2015, 07:15:36 pm »
Both units were destined for the dumpster if I did not rescue them :)

I wish I had such a dumpster nearby. :-//
 

Offline Thomas

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Re: List your test equipment "scores" here!
« Reply #164 on: March 27, 2015, 08:07:23 pm »
Some more old toys arrived today...  8)








Really nice toys!
The top one looks like a modular thingie, with changeable modules?
 

Offline sdg

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Re: List your test equipment "scores" here!
« Reply #165 on: March 27, 2015, 08:27:04 pm »
Really nice toys!
The top one looks like a modular thingie, with changeable modules?

Some info here : http://www.barrytech.com/tektronix/tektm500/tektm500.html
It's a Tektronix TM5000 series, the younger brother of the TM500 :
--
 -sdg
 

Offline dom0

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Re: List your test equipment "scores" here!
« Reply #166 on: March 27, 2015, 08:40:37 pm »
http://w140.com/tekwiki/wiki/Main_Page#TM500-series_and_TM5000-series

TM500: only manual control, can have connections on the rear (option)
TM5000: adds GPIB
,
 

Offline plazma

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Re: List your test equipment "scores" here!
« Reply #167 on: March 27, 2015, 08:44:22 pm »
Scored some PSUs from the Broadcom auction. I'll collect them next week. These cost about 73€ each (including the 16% buyers premium)





Here is some equipment I got for free some years ago.



Other good scores are an Askania brand stereo microscope for cheap and a free Filtronic brand fume extractor.
 

Offline The Doc

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Re: List your test equipment "scores" here!
« Reply #168 on: March 28, 2015, 08:07:03 am »



Really nice toys!
The top one looks like a modular thingie, with changeable modules?

It is, it's a 6 slot mainframe (I think that's what they call it). There are 2 doubles and 2 singles in it.

It needs a fan, but I have one ordered, and the programmable power supply will want calibrating, but for what I'm using it for, the 3456A will do for calibrating it.

I also got a precision bench source. It looks like it's controlled from a PC, as there are no settings on it, but it has a USB connection and an ethernet connection. I've plugged it into the PC, and it enumerates as a 'TTG-001 DC source', but no drivers are found. I can't find anything on the internet about it, and there is no manufacturer's name on or in the box, so I'm guessing it's a proprietary bit of kit for something.
I used Wireshark to try to determine its IP address but it's not being broadcast, so unless I can find how to control it, it looks like I'll end up robbing it for the power supply board and binning the sexy looking control board.







If anyone knows anything about it...?
Too old to die young
 

Offline dom0

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Re: List your test equipment "scores" here!
« Reply #169 on: March 28, 2015, 08:14:53 am »
Chances are it speaks VXI-11 on the Ethernet side of things. Maybe USBTMC on the USB side of things. You can use something like arp-scan(1) to discover the IP. Probably in one of the private address ranges. imho looks too good / capable to just trash and take apart.
,
 

Offline mtdoc

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Re: List your test equipment "scores" here!
« Reply #170 on: March 28, 2015, 08:29:44 am »
Scored some PSUs from the Broadcom auction. I'll collect them next week. These cost about 73€ each (including the 16% buyers premium)


Very nice! I bought one of those TTi TSX1820 on Ebay a while back. It was broken but cost only about half that price.

I still haven't fixed it. ::)

I do have the service manual which took some effort to get from TT. Happy to send you a copy if needed.
 

Offline The Doc

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Re: List your test equipment "scores" here!
« Reply #171 on: March 28, 2015, 09:23:25 am »
Chances are it speaks VXI-11 on the Ethernet side of things. Maybe USBTMC on the USB side of things. You can use something like arp-scan(1) to discover the IP. Probably in one of the private address ranges. imho looks too good / capable to just trash and take apart.
Thanks... I'll have a look into it and see what I can find. I'm surprised there's no manufacturers name anywhere on it though.

I agree with you on it looking too good to trash. It would be a shame. I'll keep stabbing at it and see can I find anything.
It has a 16 pin header on the board that's probably a serial or UART interface of some sort. I'll see can I find what chip it's going to and pin it out, and hopefully access it from a terminal or something.

Cheers

Edit... I tried the ARP scanner and I'm getting no helpful results, so I'm guessing the ethernet port isn't configured. 
« Last Edit: March 28, 2015, 10:35:30 am by The Doc »
Too old to die young
 

Offline harrimansat

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Re: List your test equipment "scores" here!
« Reply #172 on: March 28, 2015, 11:00:40 pm »
My Little Toys



 

Offline dom0

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Re: List your test equipment "scores" here!
« Reply #173 on: March 28, 2015, 11:52:49 pm »
16 pin header could also be JTAG, although it's not very common.

--

Maybe we want an "eBay Madness" thread, too:

150 € / 170 USD for a HP 209A  :-DD
,
 

Offline firehopper

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Re: List your test equipment "scores" here!
« Reply #174 on: March 29, 2015, 08:40:55 am »
just won a auction for a fluke 289 for $335 used. I'll post pictures when it arrives
 


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