¿ªÔÆÌåÓý

ctrl + shift + ? for shortcuts
© 2025 Groups.io
Date
Tek 576 vs 577
Hello! After some time looking around, I have finally bought a 577/D1 curve tracer with the standard 177 fixture. I wonder which are the differences with the more expensive 576. What would I be
By Jose V. Gavila <eb5agv@...> · #25858 ·
Re: Tek 528 Waveform monitor, what is it?
Ok, thanks. I thought it was something like that, obviously not that useful instument, unless you are doing video then. With best regards Tomas Larsson Sweden http://www.tlec.se http://www.ebaman.com
By Tomas Larsson <tomaslarssonse@...> · #25857 ·
Tek 528 Waveform monitor, what is it?
"Tomas Larsson" wrote: Hi group. Stumbled across a Tek 528 Waveform monitor. What is it, and what was it's primary use? Cant find any info more than pic's. With best regards Tomas Larsson Sweden It's
By J Forster <jfor@...> · #25856 ·
Re: Tek 528 Waveform monitor, what is it?
Tomas, It was used by TV stations to monitor video waveforms. Made in NTSC and PAL versions, I think. Bill Roberts Tomas Larsson wrote:
By Bill R <bill1904@...> · #25860 ·
Re: Tek 528 Waveform monitor, what is it?
Tomas The Tektronix 528 waveform monitor is used in the TV industry to monitor the video waveform. The scope is graduated in IRE. A proper waveform will have 100 IRE of video and 40 IRE of sync. The
By Glenn Little · #25855 ·
Re: Tek 492 SA experts, can you answer these questions?
I haven't messed with the 10 MHz output, but try feeding it into a general-coverage receiver and see what the levels are like. Zero span will definitely be needed. For paper manuals, QService is great
By John Miles <jmiles@...> · #25852 ·
Tek 528 Waveform monitor, what is it?
Hi group. Stumbled across a Tek 528 Waveform monitor. What is it, and what was it's primary use? Cant find any info more than pic's. With best regards Tomas Larsson Sweden http://www.tlec.se
By Tomas Larsson <tomaslarssonse@...> · #25854 ·
Re: old fashioned 535 - first start after 35 years
Michael For starters , do a search in the Tekscopes archives for a a long email thread on washing and baking old scopes to get the grime out . It may be as far back as two years ago but there was a
By Artek Media <manuals@...> · #25853 ·
Tek 492 SA experts, can you answer these questions?
I'm learning my way around the 492 and don't yet have manuals for it. (I'd rather get print manuals than a CD copy...got a set for sale?) I'd like to be able to use the 492 as a receiver for AM and FM
By Chris Johnson <cmjohnson@...> · #25851 ·
old fashioned 535 - first start after 35 years
Hi, now I finished the repair of this pretty old scope. I switched on and was afraid of getting "flames" out of it. This didn't happen but even after 10 minutes running no beam appeared on the tube.
By Michael Petereit <michael.petereit@...> · #25850 ·
Photo captioning contest and trip report
Hi everyone, Thanks to all of you who responded to the photo captioning challenge. I have decided to award BOTH prizes, first place gets their choice and second gets the other. One prize was a new set
By Larry Christopher · #25849 ·
SC 501 sync
Greetings, I have an SC501 that has poor sync. The unit works better at Usec settings than Millisec settings. I can swap U200 with a unit that works good and see no improvement. I can set 2 units side
By Jerry Massengale <jmassen418@...> · #25848 ·
Re: 2445A big furry trace
half Check zener diode VR1891 and cap C1890, both on A9 High Voltage board. Voltage at pin 8 of the CRT (= pin 9 of P901) should be around +30 volts. /Hakan
By zenith5106 · #25847 ·
Re: Birdies on a 492....what's normal?
the birdies were coming from broadcast stations buy some 10 db n type attenuators from ebay and put them between the gen and 492 deane kidd might have some too
By arthurok <arthurok@...> · #25846 ·
2445A big furry trace
For some unknown reason, suddenly the trace(s)on my 2445A is(are) half an inch wide. The focus knob doesn't do much. All the other controls (shift, intensity etc) work normally. Any ideas where to
By mobyxena · #25845 ·
465M -5V PSU
Hello, Since I had to pull the main board out I replaced all the Caps at one time the two 18000 UF and the 1000UF with newer style electrolytics I have a Sencor at work and will test the old ones
By Charles A. Pratt <charlesapratt@...> · #25844 ·
Re: 516 brightness / geometry trouble
EHT regulation?..........................................Don C.
By Don Collie <donmer@...> · #25843 ·
CRT Feasability
I would like to adapt a 5441 Oscilloscope to a custom application. The fabrication is straight forward. However, the CRT is just WAY TO BIG. With all of the mechanical concerns satisfied, would it be
By jones_chap <jones_chap@...> · #25842 ·
Tek 547 Needs Rescue!
Cross Post (with permission) from another list. ++++++++++ I have a Tektronics type 547 scope that my wife is making me get rid of because it is taking up too much of her precious space. As much as I
By Garey Barrell <k4oah@...> · #25841 ·
Model 221
I would really like to repair an old 221 scope if possible but I'm beginning to have some doubts. There is some corrosion on the circuit boards but I hate to give up just yet. I First need to repair
By scintillationman <scintillationman@...> · #25840 ·