Which scope to repair - Page 1
Forum section: electronics / repair

author: Hextejas
author_rank: Frequent Contributor
timestamp: June 25, 2018, 08:17:24 pm
content: I have 3 scopes that I bought for small $$$. My intentions are to have 1 for audio systems repair and one to turn into a curve tracer according to a project by Mr. Carlson on Patreon. The 3 scopes are :1) Leader LBO-516, 100mhz2) Hameb HM-203-53) Tektronix 465BThey all power on but my skills are non existent so I don't know which ones are closer to being ok.If they were all in 100% working order which 2 would you chose ?

author: Cyberdragon
author_rank: Super Contributor
timestamp: June 26, 2018, 01:16:45 am
content: If your skills are non existant, I suggest you start with the oscilloscope training thread over in the beginners section lest you end up with three non-powering on scopes.

author: CarsonReidDavis
author_rank: Regular Contributor
timestamp: June 26, 2018, 02:35:22 am
content: I'd say the Tektronix is probably the nicest of the bunch. I know several people who use that as their main scope. Does yours have the digital multimeter on the top?By the way, here is the link to the thread Cyberdragon is talking abouthttps://www.eevblog.com/forum/beginners/oscilloscope-training-class-(long)/The video is over two hours long, but worth the watch.

author: tautech
author_rank: Super Contributor
timestamp: June 26, 2018, 02:44:04 am
content: Quote from: Hextejas on June 25, 2018, 08:17:24 pmThat's the problem, just use them and get the skills.Then swap around which you're using and give it some little time to get used to the UI in each before picking a favorite.Probably the Hameg is best quality but the Tek offers better online support and knowledge.All are OK CRO's.Oh and BTWMHzis the proper indication of BW units !

author: CarsonReidDavis
author_rank: Regular Contributor
timestamp: June 26, 2018, 02:49:12 am
content: Quote from: tautech on June 26, 2018, 02:44:04 amTautech would probably know more than me on this subject. Although I own 6 Teks, I don't have any Hameg scopes to compare.It should be noted that the Hameg is 20MHz and the Tek is 100MHz. Depending on your application, that could be an important distinction.

author: tautech
author_rank: Super Contributor
timestamp: June 26, 2018, 02:53:40 am
content: Quote from: CarsonReidDavis on June 26, 2018, 02:49:12 amQuite so however the OP has indicated his interest is in audio stuff for which a 20 MHz CRO will be adequate.

author: CarsonReidDavis
author_rank: Regular Contributor
timestamp: June 26, 2018, 02:58:15 am
content: Quote from: tautech on June 26, 2018, 02:53:40 amBut tautech, what if OP wants to scope audio content reeeeaaally far outside the range of human hearing?Hextejas, humans can hear from 20-20,000 Hz. Your Hameg can sense up to 20,000,000 Hz. So even though it is less than the Tek, it still easily covers audible signals.To explain the earlier refence to units,1 MHz = 1,000,000 Hz1 mHz = 0.001 Hz1 MHz happens 1 million times per second1 mHz occurs once every 17 minutes

author: tautech
author_rank: Super Contributor
timestamp: June 26, 2018, 03:08:16 am
content: But what is the audio equipment has a SMPS , then he'd might need to venture into the 40-80 KHz region for which a 20 MHz scope will still eat it.

author: CarsonReidDavis
author_rank: Regular Contributor
timestamp: June 26, 2018, 03:12:38 am
content: Quote from: tautech on June 26, 2018, 03:08:16 amWorst case, OP comes across some songs made for the moth Galleria mellonella, which can hear frequencies as high as 300KHz...in which case the Hameg will still be sufficient.