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Just for anyone who is interested, links to the book are in the blog post https://www.eevblog.com/forum/testgear/free-book-on-tektronix-oscilloscopes/ http://www.k100.biz/parade.htm Seems a lot of people like it. Wally KC9INK

Hi all, I recently repaired a TDS460, but I am a bit taken aback by its about 1 minute 10 seconds boot time to fully up - is this normal? My HP 54522A takes a mere maybe a dozen seconds to being able to perform measurements. Once up, everything functions perfectly and in spec. The only less than ideal thing I am aware of is one of the internal batteries is not in best shape (the other one is good). Thank you, Radu.

WVR500 controls are easy to break was there a modification or part number of a replacement ever released? -- Jeffeelcr

For ~300ps into 50ohms, have a look at https://www.eevblog.com/forum/testgear/show-us-your-square-wave/msg1902941/#msg1902941 To get a reasonable edge, decoupling is critical. Another simple alternative is the "cal out" generator in Tek 485s, at under 1ns.

Hi, I am trying to put together a test device to check the BW of my scopes. Can anyone suggest a simple module or design that would do the deed without costing the earth ?? I probably need a rise-time of < 1ns. Thanks in advance, Dave

I've got the BNC version of this: http://www.leobodnar.com/shop/index.php?main_page=index&cPath=124 I'd bet a lot of us have at least one of them.

Hi, I'm looking for a Tektronix 015-0672-50 50 Turn Current Loop to suit a TCP202 current probe. Picture attached for reference. If anyone has one of these they are willing to sell and ship to Japan, please let me know! https://i.imgur.com/GUnatlC.jpg

Greetings. I work in the audio industry and had my teen years in the back yard of Tektronix , so naturally gravitated to using Tek gear. I am not a collector, just a user,... I use my Tek stuff in a real working environment. Here is a partial list of my lab: Jennifer <7000> 7104 opt 2 & 3 1 Gig 7A29 1 GHz 50ohm single 7A19 600MHz 50ohm single 7B10 1 GHz 200mS to 2 nS x10=200pS 7B15 1 GHz Delaying " " " R7844Dual Beam 400MHz scope 7A24 2 ch 400MHz 7A16A single 150MHz 7B92A 500MHz time base 7B92A 500MHz time base 7834 400 MHz Storage scope 7A16 single 150MHz 7A18 2 ch 75MHz 1meg 7B92A 500MHz time base 7B92A 500MHz time base Untested, no plug-ins installed 7704A / P7001 digitizer scope Extra 7000 series items 7A13 Diff Comparator 100MHz 7A13 Diff Comparator 100MHz 7A13 Diff Comparator 100MHz 7A17 150MHz high gain 7A18 2 ch 75MHz 1meg 7B53N 100MHz time base 7B92 500MHz time base 7D10 event count to trigger 7D11 delay time to trigger 7D14 freq counter Other series 2247A 100MHz Portable 576 Curve Tracer 576 Curve Tracer 575 Curve Tracer 535 10MHz Scope Also use a pretty good collection of TM500 and 5000 items including Bruce Hoffer's audio masterpieces, the AA501A and SG505 with IMD and balanced out options. <TM 500 & 5000> TM5000 w/rack ears TM5000 w/rack ears TM506 rack TM506 rack TM506 rack TM506 rack TM515 suitcase TM501 TM501 TM503 TM504 TM504 AA501 Distortion test AA501A Distortion test AM503 current probe set with A6302 Current probe DM501 4.5 digit DMM DM501A 4.5 digit DMM DM501A 4.5 digit DMM DM501A 4.5 digit DMM DM501A 4.5 digit DMM DM501A 4.5 digit DMM SG502 5Hz 500KHz SG502 5Hz 500KHz SG502 5Hz 500KHz SG503 leveled sine 250MHz SG505 opt 2, balanced out, IMD FG504 sweep gen 40MHzl FG507 sweep gen .002 to 2MHz PG502 pulse 10Hz to 250MHz PG505 pulse 1Hz to 100KHz TG501 time base gen DC503A counter DC505A counter PS503A dual power supply PS501-1 PS lab-built dual supply SC504 40 meg scope PS5010 power supply PS5010 power supply DM5010 multi meter DM5010 multi meter FG5010 20meg function FG5010 20meg function 2 ) probe tool case plug in 5 ) slot covers

Dear All, I am struggling with this unit for some time. The waveform at TP305 is correct, according to the manual. However I can not obtain more than 5 steps at TP-306. I have checked the voltage at U305B-3 which should "define" the maximum number of steps and it varies from 0.05 to 4.75V , as expected. Just as a desperate measure I have alredy replaced U305, U220, U350, Q306 and Q324 without success. I have created a photo album with the waveforms at TP-305, TP-306 , tthe 577 display as well as the pertinent schematics sheets. See /g/TekScopes2/album?id=279289. Any help will be welcome. Thanks, Roger

Hi all, I am currently looking for copies or scans of the Instrument Interfacing Guide (part no. 070-6759-00) and the Reference Guide (part no. 070-6761-00) for the AFG5101 arbitrary function generator. These seem to be a bit rare, so the usual suppliers (Artek etc) don't seem to have them... Anyone got a copy of these they can send/sell to me by chance? Thanks! Jared

The Enhance/Integrate knob + corresponding electronic components (Storage schematic 10) have been removed on later units, SN B040000 and higher. The remaining circuit + CRT was mainly unchanged. Why has this been done? Did it stress the CRT too much? Stefan

Rogerio O <rodd414@...> updated the album Tek 577 unable to display more than 5 steps ***SOLVED***: The waveform at TP305 is fine, but when I turn the knob to increase the number of step s, the maximum I can get is 5. I have attached the schematics so anybody willing to help does not have to look up for them. The problem was caused by a deffective Q234. After replacing it by a 2N3565, the circuit began to function as expected.

I need a scope cart for one of my 465s. I'd like one of the "single rod support" style. Is there a reason to prefer one of the 200 series (K212, 200-1,200-2, etc) over another, or are they all more or less equivalent for a 465? -- Lee K. Gleason N5ZMR Control-G Consultants lee.gleason@...

Hi all, I'm thinking of creating my own version of the Option 02 PCB for my AFG5101, but the service manual seems a bit lacking in parts lists... Only showing part details for PCB A1 (Option 02 is PCB A5) The schematics seem to have the needed part details for all parts except Transistors Q900, Q901, Q902, Q903, IC's U905, U914, and Crystal XTAL900. Here's a link to an image showing the locations of the parts: https://i.imgur.com/3nS7xs2.png Can someone who has this option in their AFG5101 pull the board out and let me know what the part numbers for these parts are? Some photos of the parts and the entire board would be greatly appreciated too, if possible. If I'm successful in replicating this option PCB, I'll release the gerbers and BOM for others to use too. Thanks! Jared.

One of these turned up and I wonder what the 104F mod is. Anyone? https://www.ecosensory.com/tek/556-scope-serial-numbers-3.jpg

I have 4 465 part scopes I need to get rid of. One is complete, one is 99% complete, the other two are missing various bits. All guaranteed not to work. These came out of a firm that did CNC repair. I'd really prefer to not ship these and I don't have time to part them out myself. Located around Ann Arbor, Michigan. Prices range from $35 - $55 depending on completeness. Take them all and get a deal (eg, $100 for all 4). Drop me a note offlist if interested. Paul -- Paul Amaranth, GCIH | Manchester MI, USA Aurora Group of Michigan, LLC | Security, Systems & Software paul@... | Unix/Linux - We don't do windows

I'm posting here parts of a thread that previously ran on Tekscopes in case there are others who may have another slant on this problem. The scope boots up with a DIAGs message of Test 04 Fail 03. Once the A/B trig button has cleared the message I can't find any apparent faults with the scope; everything seems to function. A5 RAM was replaced early on (no change found); extensive checks on the battery (unable to determine ANY detrimental effect of the battery.... appears in very good shape); CAL 01/02/03/04/05 successfully done in ALL steps; CAL 06 not done because I don't have the TD pulser; CAL 07 not done because there was no reason to do so (no READOUT centering issues). The readout does have a series of "????" filling in all the (otherwise) empty gaps between the normal readout symbols. These "???" change to "...." when in CAL mode. I assume these are simply a warning that the scope is running with some issues in the background. EXER 03 run several times but without any result. The "Fail 03" is strange because nowhere in any manual that I've read does "03" appear in ANY error table for ANY test. It's clearly a numeric code and not HEX otherwise other error codes in other tables would not make any sense in the HEX domain. So I don't think that "11" is equivalent to "03" even if it's tempting to think so. For example, error codes in Table 6-4 have a multitude of clearly non-HEX values. Any suggestions from anyone?

Hi all, My 7L13 Spectrum Analyzer is back up and running but has some instability and other idiosyncrasies. After having a Tantalum fail recently, it is time to replace as many of the Tantalums as practical. I don't intend to replace them all, just the ones that I can get to without major disassembly or causing any damage. I also intend to re-seat transistors and chips that I can get to. My problem is the removal of both the DVM Readout and DVM Analog PCBs as per the Maintenance section of the 7L13 Manual, page 6-8 in my Version to get to Tantalum cap C2000. Looks simple, should be simple ... . but the Readout PCB will not come out. I have the DVM Analog PCB out okay, everything disconnected and the Readout PCB tilted "almost" as per the photo on page 6-9 Fig 6.5B ... but not quite enough. I have the PCB 'flexed' slightly already .... I am worried about flexing the Board further and breaking it. Has anyone here done this?? Am I missing something simple here?? Any advice?? If too difficult, I will leave it alone as it tests 'good' in circuit .... Cheers, Ian, Melbourne, Australia

I need to remove the delay time knob and pot from a 465. Getting the inner knob off looks easy (as soon as the .050" Allen bit gets here from Amazon). How do I remove the outer part of the knob, and the pot? -- Lee K. Gleason N5ZMR Control-G Consultants lee.gleason@...

I'm working on fixing the 2nd 2465A supply in two weeks. I have a strange problem. I replaced a bad cap, but the psu still goes into tick mode even with a 2 ohm load on +5Vd. I've diagnosed it down to it appears that the +5Vd voltage is too high, ends up driving the feedback loop out of range and into shutdown. If I break the loop and manually feed an external feed voltage, everything works fine, the voltage changes with the external voltage, all supply voltages are fine. I've checked the simple feedback regulator, basically a comparator that's connected on the + input to 5v derived from the 10v ref, the - input is connected to +5Vd. Observing the comparator output as I change the external ref, it's working just fine. The +10V ref is also spot-on. I'm running out of ideas, the +5Vd line isn't regulated directly, it's just rectified from the switching transformer and filtered with a couple of caps. The voltage control is via the feedback loop. It will no doubt end up being something trivial and obvious, but I'm not seeing the forest for the trees at this point. Note that this is the same supply used in all the 246x scopes. Any suggestions? Thanks, Bill