It is a great video. I watched it several times. I am a newbie and can't afford an oscilloscope. I will buy this. I will buy a microscope and a thermal camera for troubleshooting my machines.
Nice video buddy: When I first started out all we had for fault finding on microcomputers was a Logic probe, pulser & analogue multimeter. Still have a couple of probes & pulsers which come out when dealing with things like Commodore & Sinclair computers or as you said for pll faults. Keep up the good work ;-)
I noticed those IDL-800's are actually still made (at a cost of 499 USD and up). I've encountered and used a variety of these training laboratories throughout several schools and some training labs from these "standalone labs" all the way up to the modular and mondo expensive NI ELVIS and ELVIS II+. The Global Specialities website does not appear to list or sell that or likewise logic probe/pulser/monitor kits, which is probably related to the reasons mentioned in this video (variety of other brands as well as DIY versions). EDIT: One thing I forgot to mention is that I tried finding a "logic monitor" and they were either hard to find, too pricey for me, or just a tad bit "bulky" for attaching into tight confines. My solution? I found one or more 3M branded IC test clips (available on Digi-Key, Mouser, etc.) which I'm able to connect leads to either a DIY or an OE logic analyser. Saved quite a bit of money and I can use several types of these clips by just pluggin wires to the top end of the clips. Just my 2 cents.
MikesRadioRepair, can you make a youtube video explaining and showing how you use the logic probe to test and troubleshoot PLL circuits in radio that you keep mentioning in the video but I don't know how or what you're talking about. Mostly you use an oscilloscope to test and troubleshoot PLL circuits. Can you show examples of using the logic probes MEM button for troubleshooting logic circuits, because most logic signals are activity toggling.
Excellent job, interestingly those logic probes were used a lot in the 80s at high school vocational schools and community colleges but I stopped seeing them by the time I got to my 4 year EE classes, I am not sure why, perhaps it was just easier to use a scope. Again, great job and thanks for sharing.
Question..... I have a Dx7ii synth It has a crystal oscillator that is rated at 9.426..... They don't make that now..... Can I substitute with a 10mhz.... Oscillator?
Not familiar with that model radio but that much of a difference would knock it way out of alignment and there is no way you would be able to get that much tuning range to bring it into spec.
The probe needs a ground reference. If you use a external power supply that would isolate the ground from the DUT's ground then it won't work. If the two power supplies share the same ground then it would.
The guys who need audio on these are us old farts with poor eyes. In my case, I need one for catching a single pulse from a car ECM from the early 90's. It checks the throttle opener vacuum solenoid before it gets up to 130 degrees (otherwise I'd have to wait 5 minutes for it to heat up, then let it cool down each time. But the test pulse is either too fast to register on a DMM, even with "hold" function, or it's not there. So to make sure one way or the other, I'm shopping for one with an audio beep for the pulse memory to use instead of my LED only version. Then instead of hanging upside down under a dashboard trying to see a very short test pulse, I can just backprobe the connector, hang the probe on that wire and wait for the beep. Handy little tool for those of us who can't afford the pre-'96 auto test tools, software and hard-to-find adaptors.
Global Specialities LTC-2 circa 1989 'ish, not even listed in their discontinued items database...currently eBay listing for LTC-2 $100 appears complete +$50 shipping(only one I saw), ships from Singapore...Oy
Wow, I've never seen anything like that Logic Monitor DIP-clip type thing. I do a ton of prototyping with good old DIP chips, and something like that to monitor low frequency pin functions seems incredibly useful! Seems quite expensive on eBay unfortunately. Maybe an opportunity to DIY something similar... Never even had the idea until I saw that thing though.
It is a great video. I watched it several times. I am a newbie and can't afford an oscilloscope. I will buy this. I will buy a microscope and a thermal camera for troubleshooting my machines.
That digital lab is nice, ideal for testing components
Nice video buddy: When I first started out all we had for fault finding on microcomputers was a Logic probe, pulser & analogue multimeter. Still have a couple of probes & pulsers which come out when dealing with things like Commodore & Sinclair computers or as you said for pll faults. Keep up the good work ;-)
I noticed those IDL-800's are actually still made (at a cost of 499 USD and up). I've encountered and used a variety of these training laboratories throughout several schools and some training labs from these "standalone labs" all the way up to the modular and mondo expensive NI ELVIS and ELVIS II+.
The Global Specialities website does not appear to list or sell that or likewise logic probe/pulser/monitor kits, which is probably related to the reasons mentioned in this video (variety of other brands as well as DIY versions).
EDIT: One thing I forgot to mention is that I tried finding a "logic monitor" and they were either hard to find, too pricey for me, or just a tad bit "bulky" for attaching into tight confines. My solution? I found one or more 3M branded IC test clips (available on Digi-Key, Mouser, etc.) which I'm able to connect leads to either a DIY or an OE logic analyser. Saved quite a bit of money and I can use several types of these clips by just pluggin wires to the top end of the clips. Just my 2 cents.
MikesRadioRepair, can you make a youtube video explaining and showing how you use the logic probe to test and troubleshoot PLL circuits in radio that you keep mentioning in the video but I don't know how or what you're talking about. Mostly you use an oscilloscope to test and troubleshoot PLL circuits. Can you show examples of using the logic probes MEM button for troubleshooting logic circuits, because most logic signals are activity toggling.
When you end up using a microscope to work with surface mount the audio signals becomes very useful because you can only see the tip of the probe.
Have those/that kit somewhere. I'll have to see if I can figure out where they are. Knew/know if I get rid of them I will regret it some day.
Excellent job, interestingly those logic probes were used a lot in the 80s at high school vocational schools and community colleges but I stopped seeing them by the time I got to my 4 year EE classes, I am not sure why, perhaps it was just easier to use a scope. Again, great job and thanks for sharing.
Question..... I have a Dx7ii synth
It has a crystal oscillator that is rated at 9.426..... They don't make that now..... Can I substitute with a 10mhz....
Oscillator?
Not familiar with that model radio but that much of a difference would knock it way out of alignment and there is no way you would be able to get that much tuning range to bring it into spec.
Just watched this video looked on ebay and made a offer and got the whole kit for 20.77 including shipping
Well done mate, best video I've seen explaining in a easy way.
Can I use external 5v from a power supply for powering logic probe along with power supply's ground?
The probe needs a ground reference. If you use a external power supply that would isolate the ground from the DUT's ground then it won't work. If the two power supplies share the same ground then it would.
I was able to find the whole Kit on Ebay. I won the bid and is on it's way!
The guys who need audio on these are us old farts with poor eyes. In my case, I need one for catching a single pulse from a car ECM from the early 90's. It checks the throttle opener vacuum solenoid before it gets up to 130 degrees (otherwise I'd have to wait 5 minutes for it to heat up, then let it cool down each time. But the test pulse is either too fast to register on a DMM, even with "hold" function, or it's not there. So to make sure one way or the other, I'm shopping for one with an audio beep for the pulse memory to use instead of my LED only version. Then instead of hanging upside down under a dashboard trying to see a very short test pulse, I can just backprobe the connector, hang the probe on that wire and wait for the beep. Handy little tool for those of us who can't afford the pre-'96 auto test tools, software and hard-to-find adaptors.
don't use that insulated wire that you are using at 27.275mhz as the insulation will melt as you close to the resonate frequency of Chloride.
may i ask how these are used with a pulser?
Global Specialities LTC-2 circa 1989 'ish, not even listed in their discontinued items database...currently eBay listing for LTC-2 $100 appears complete +$50 shipping(only one I saw), ships from Singapore...Oy
TH-cam syndrome. There were several on ebay the other day.
Restraint and patience will work in your favor!
Wow, I've never seen anything like that Logic Monitor DIP-clip type thing. I do a ton of prototyping with good old DIP chips, and something like that to monitor low frequency pin functions seems incredibly useful! Seems quite expensive on eBay unfortunately. Maybe an opportunity to DIY something similar... Never even had the idea until I saw that thing though.
Wouldn't be to hard to duplicate. Take a 3M DIP package test clip, solder ribbon cables to it and you could put the circuit on a small circuit board.
I've been eyeing those DIP test clips for a while, so, sounds like a good excuse to get a few.
Nice