My first oscilloscope but without probes, help me please - Page 1
Forum section: electronics / beginners

author: ziegler
author_rank: Regular Contributor
timestamp: February 20, 2014, 11:52:24 pm
content: i'm a total noob in electronics (consumer), but i want to learn more of it, in my free time.This oscilloscope was just collecting dust, so i asked if i could have it for free (i know a guy that teaches in an college)Trio 15 MHz Oscilloscope CS-1560A -http://www.radiomuseum.org/r/trio_kenwo_15_mhz_oscilloscope_cs_1560a.htmlBut there was no probes with it, i don't know if i can use something from a newer model, or from an another brand.What kind of probes should i buy ?(i saw, didn't find it so easy to understand)thanks in advance

author: w2aew
author_rank: Super Contributor
timestamp: February 21, 2014, 12:02:36 am
content: Just about any inexpensive 10x probe rated for 60 or 100MHz or less will work. Probes with higher BW probably won't have the compensation range needed for your scope, do stick to the lower BW probes, such as 20 or 40 MHz.

author: ziegler
author_rank: Regular Contributor
timestamp: February 21, 2014, 12:20:18 am
content: i found these at a cheap price (in comparison to where i live) -20MHzhttp://dx.com/p/20mhz-oscilloscope-probe-with-x1-x10-switch-max-600v-34219#.UwabPIZBmYA40MHzhttp://dx.com/p/40mhz-oscilloscope-probe-with-x1-x10-switch-max-600v-34221#.UwabNoZBmYA60MHzhttp://dx.com/p/jtron-x1-x10-60mhz-oscilloscope-probe-black-291553#.UwaaW4ZBmYBwhat is your opinion ?

author: TorqueRanger
author_rank: Frequent Contributor
timestamp: February 21, 2014, 12:38:46 am
content: I bought cheap Uni-T Probes off ebay and they where pretty nice .. Like everyone said make sure the compensation is proper for the scope otherwise your measurements will be off ..

author: CaptnYellowShirt
author_rank: Frequent Contributor
timestamp: February 21, 2014, 06:37:52 pm
content: Quote from: ziegler on February 20, 2014, 11:52:24 pm

author: ethhanners
author_rank: Contributor
timestamp: February 21, 2014, 11:36:46 pm
content: I don't like the traditional probes I like the alligator probes they are faily cheap

author: w2aew
author_rank: Super Contributor
timestamp: February 22, 2014, 12:30:19 am
content: Quote from: ethhanners on February 21, 2014, 11:36:46 pmAlligator "probes" will only be 1x, and thus will be very limited in bandwidth and will present a lot of capacitive loading to the circuit under test.There are mini-grabber hooks (witch's hats) are available for traditional probes, which you can use if you want hands free operation.

author: ziegler
author_rank: Regular Contributor
timestamp: February 22, 2014, 12:34:41 am
content: so should i pick an 40MHz or 60MHz probe ? (20MHz is too low, right ?)

author: w2aew
author_rank: Super Contributor
timestamp: February 22, 2014, 01:19:30 am
content: Quote from: ziegler on February 22, 2014, 12:34:41 amIf the input capacitance of your scope input is between 15pF to 45pF, then the 60MHz probe will work just fine, and give you a little future-proofing in case you get a slightly faster scope in the future.

author: Radio Tech
author_rank: Frequent Contributor
timestamp: February 22, 2014, 01:07:33 pm
content: I am in need of new probes for my 2 Tek 2235 scopes. Been looking at these for the last week.http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=220328142482&fromMakeTrack=true&ssPageName=VIP:watchlink:top:en#ht_3257wt_916Useable with scopes having Bandwidth up to 100 MHzInterchangeable Probe TipCoaxial Reed SwitchModular ConstructionCompensation range: 15 to 35 pFInput Capacitance: 1X: 85pF-115pF; 10X: 14.5pF-17.5pFInput Resistance: 1X: 1Mohm; 10X: 10Mohm;Bandwidth: 1X: DC-4MHZ, 10X: 100MHzAttenuation Ration: 1:10

author: Terabyte2007
author_rank: Frequent Contributor
timestamp: February 22, 2014, 01:24:01 pm
content: Most of the advise I would have gave you has already been posted, If you search eBay, you can find tons on new probes for a decent price. If your willing to wait 2-3 weeks, you can get them direct from China for have the cost.

author: GreyWoolfe
author_rank: Unknown
timestamp: February 22, 2014, 04:04:28 pm
content: Radio Tech, I bought probes similar to these for my 2235 and DB 5100. They seem to work just fine.

author: ziegler
author_rank: Regular Contributor
timestamp: February 22, 2014, 04:34:44 pm
content: thank you guys for all the help.I'm going to buy the 60 MHz probe