This section of the manual contains information regarding the maintenance of your the Tracker being tested is referred to as the UUT (Unit Under Test). HUNTRON INSTRUMENTS, INC. TRACKER® OPERATOR MANUAL. OCTOBER P/N Huntron and Tracker® are registered trademarks. provides advanced troubleshooting capabilities to The Huntron Tracker is ideal for troubleshooting Manual or AutoScan. High Range Lockout.
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Thread starter Billy Mayo Start date Buntron 18, Billy Mayo Member Dec 18, Huntron Test Signal frequencys are 60hz, hz, hz What did they choose these 3 for test signal frequencys? My managers favorite one which takes days to do 2. Comparing Two Signatures of non bussed IC pins 3. You then spray or heat component one by one until you see which component’s signature changes “shape” 4.
Medium 2 Range b. What is mqnual name when there is an internal series resistor with a diode? I know leakage is like a resistor in parallel with the diode, but what is a resistor in series? Not a protection Diode, I know they have a internal series resistor but that is made like that Diode has an internal series resistor a. The series resistor effects manua diodes to turn on at the proper voltage b.
Non- Linear resistance in series c. Internal Resistor in parallel with diode a. Non- Manuall resistance in parallel b. This effects the ability of the diode to provide maxium output c. I’d let your manager handle the shorted bus or shorted IC’s.
That would be more productive for you. One day, you should ask him to demonstrate his technique. One model of a diode is an ideal diode, a series resistor and a shunt resistor. Your little diode test doesn’t measure leakage current, CAN help determine if it’s leaky. A curve tracer or a I-V curve is a way of determining both parameters. Good approximations come from the slope around zero volts and the slope at a high forward bias like about 1V.
I spent a number of years characterizing diodes. Things get a little messy when you add the Rshunt and Rseries terms Io is basically the leakage current, e is e, q is the charge on an electron, k is boltzman’s constant, T is temperature 200 Kelvin and A is the diode quality factor which is usually around 1.
Why can’t a DVM meter measure the leakage current or the parallel resistance? What is the series resistance call that is internal of the diode? I yet to never had my hands on a curve tracer, but the huntron track is a curve tracer right? The Signatures of a curve tracer and the Huntrno from a huntron track is the same right? Curve tracers can be calibrated.
Rd or dymanic resistance is the resistance as a function of bias. ,anual and Rshunt are model variables.
You really have to bias the diode a few mV around zero to get an idea of the leakage resistance. Regressing a few data points through the origin on both sides will work. What can you do on a curve tracer than you can’t do on the Huntron Tracker ?
I thought the huntron tracker is a curve tracker. Haven’t heard about the old Huntron Tracker in decades. If you want to get an idea of what is going on using a Huntron Tracker do a Google of Oscilloscope Octopus.
The manial Huntron units were based on an oscilloscope octopus circuit. People were building their own octopus circuits long before Huntron commercialized the things and put them in a small chassis box. The basic circuits are easily built and expanded upon. So do you guys know about these signature How do you know when you got defective signatures and a bad component signature? I built a simple one a couple of weeks ago, i use it with a analogue scope, I will build a much better one next year.
Very handy bit of kit, i like using it for sorting zener diodes and finding suspect components. As for knowing when you have a defective component, you could answer this one yourself.
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Janual state you have had 20 technician’s job’s, so i think it reasonable to assume for example you know how a Zener diode works? To give you a clue,seeing as your google dosnt work, you connect the octopus to an Oscope, the scope is used in X Y mode. S you have one axis displaying???????? This will draw a pretty shape on the screen depending on the values of X and Y.
Huntron Tracker 2000 HTR 1005B , testing for shorts and components
Once you know these values there are little lines on the scope screen for thisyou can see from the datasheet if they match. I suggested you Google Oscilloscope Octopus as many of your questions would be answered with pictures. Devices like an Octopus or Huntron Tracker offer up hunron. You learn to “read” the results or signatures. Reading the manual won’t hurt either.
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Once you understand how a curve tracer, Huntron Tracker or scope octopus works then the signatures make sense and become easy to diagnose. Yes a curve tracer will show short and open. A good curve tracer does a hell of a lot more. Go find a good manual on a curve tracer and study it. One of the better ones I remember is the old Tektronixfind and read the manual on that. Then you will understand curve tracers, how they work and what they are capable of. That would really help you learn and understand this type of testing.
Next year Ron i want to make one that will act more like a tracer, I started a few weeks ago planning it out. Long way to go yet, not sure how i am going to do the DAC part, but probably drive it all from a 30f with the speed turned up. The textronix analogue scope we have will print direct to a printer, so i hope to get graphs from it. Or i can use the lecroy and dump it all into matlab via GPIB build the graph from that.
All huhtron at the moment so no idea if 200 will work. The basic one i built is really cool, but i think i need a bigger transformer one i use now is 6 voltsa 12V one would be good, some adjustable voltage regulator’s and one in constant current huntrln. I wish i had built one ages ago! Morning LG from my side of the pond. The nice thing about building an octopus and then moving along to a fancy version is you get a good visual representation of what is going on and gain a good understanding of things.
We know for example what a Zener Diode does but when we see the actual curve plotted it becomes really cool. During one of my medical leaves from work they trashed the old Tektronix curve tracer I loved. I was livid over that. Going to be a hell of a learning experience for you. Really looking forward to doing it! I had assumed that dad had given back the laptop he had got from the university it’s got loads cool software onbut he slipped up and i found out he still has it!!! So I am thinking, Textronix or more likely the wayne kerr analogue scope would prefer the wayne as it’s never used, just cant remember if it has GPID.
Then i have a choice, i can add a memory card to a pic and collect the data via serial on the tex, then download into matlab for graphing.
Or i could manhal straight into the GPID on pc from the scope then matlab, if i can get that working, and if i can build a decent DAC, then i could make a great transistor tester, that gives me real manhal curves for each transistor!
The octopus circuit’s look simple, but there must be load’s of way’s to really make a good tester. Only downside is it will take a fair bit of planning before i can get the soldering iron out!
I forgot, yes zener’s are cool, and a good way to find out there voltage. I didnt know a transistor showed a small knee on its diode trace until i saw it! I guess if you lower the current enough and have enough adjustment, then the tracer would be great for tracing shorts?
Start with very low current? Then with other probe, poke about. I am assuming that with a low enough current, when at the furthest point from the short, you would get a slightly diagonal line, this you could magnify in matlab, then as you get closer to the short, the line becomes more vertical? Oh well something to try any way. Billy Mayo Member Dec 19, Is there a Cookbook of all the signature typespictures of the signatures?
I know the Huntron manual has a lot of signature pictures and examples. Google of scope octopus?