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Old 8th January 2013, 01:53 PM   #301
jeepy is offline jeepy  Switzerland
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Default Menu in Chinese language

Well I powered up the sytem with nos smoke and ran the ads7871_v3s.exe but the menu is in chinese language?!?
What shoud I do?
Thanks,
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Old 8th January 2013, 03:33 PM   #302
jeepy is offline jeepy  Switzerland
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Quote:
Originally Posted by jeepy View Post
Well I powered up the sytem with nos smoke and ran the ads7871_v3s.exe but the menu is in chinese language?!?
What shoud I do?
Thanks,
Solved!
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Old 9th January 2013, 10:14 AM   #303
jeepy is offline jeepy  Switzerland
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Quote:
Originally Posted by locky_z View Post
I wrote a component of the Tracer installation/ calibration/ diagnostic manual in chinese,
Who can help translate into English.

1-Do I have to calibrate my system or is it done yet?

2-I installed a 2sa970 and got the message 'parameters have get from device', then 'saved' but during the next step 'load conditions' I have a blank window with no pre-defined mesure conditions. What should I do?
Thanks for your help,
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Old 9th January 2013, 12:06 PM   #304
locky_z is offline locky_z  China
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Quote:
Originally Posted by jeepy View Post
1-Do I have to calibrate my system or is it done yet?
No need to calibrate,Because the .ini file in compress file is calibrated.

Quote:
Originally Posted by jeepy View Post
2-I installed a 2sa970 and got the message 'parameters have get from device', then 'saved' but during the next step 'load conditions' I have a blank window with no pre-defined mesure conditions. What should I do?
Thanks for your help,
The ads7871_v3s.pre in your file folder?
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Old 9th January 2013, 12:13 PM   #305
jeepy is offline jeepy  Switzerland
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Quote:
Originally Posted by locky_z View Post
No need to calibrate,Because the .ini file in compress file is calibrated.


The ads7871_v3s.pre in your file folder?
I just moved files to program directory and it works now! I measured a hfe of 3.5 for the 2sa970! I will investigate and ask you if I cannot find the problem.
Do I have to shut down the system each time I want to test a new transistor?
Many thanks
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Old 9th January 2013, 01:26 PM   #306
locky_z is offline locky_z  China
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Quote:
Originally Posted by jeepy View Post
Do I have to shut down the system each time I want to test a new transistor?
Many thanks
No need to shutdown,just load another measure condition .
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Old 10th January 2013, 10:01 AM   #307
jeepy is offline jeepy  Switzerland
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Default Missing voltage?

Hi all,
Trying to measure some 2sa970 (the first test in the manual) I get Hfe of 2.5 only! Even if the datas column indicates average value of 9.9V for VCE I can actualy measure 0.3 V on the board. I only have 45 mv on the base of Q1 and Q2, 215 mv at the emitters and 0.5V at the 'C' output after J1 relay. Any idea to help me?
Many thanks.
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Old 10th January 2013, 01:17 PM   #308
CeeVee is offline CeeVee  Portugal
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Locky_z,

I have an issue with the curve tracer and it seems others have as well.

When measuring JFETs the IDss measured by curve tracer is
on average 1mA at least above what we get by the DMM test with a 9V battery for example.

So PC curve tracer is useless this way, can we calibrate it so it gives reliable Idss values ?
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Old 10th January 2013, 01:25 PM   #309
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Ceevee,
I have found the same thing, but when testing in reverse, (meaning I test already matched by battery method), the tracer gives an excellent view of very well matched traces. In truth, I don't think the curve tracer does much for us with these small signal jfets other than finding perfectly aligned curves, which seem to be easily found. I think it speaks to the quality of the Toshiba parts. Try heating up teh jfets and then tracing them and see if you get seperation of curves.
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Old 10th January 2013, 01:29 PM   #310
locky_z is offline locky_z  China
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The 2sa970 component foot is right?
Send the save data(.cuv) to me.

When start the measurement, the system control 3 channel output only moment of voltage.
When measure finish, 3 channel output to 0.


If you want to measure 3 channel output voltage by DMM, you can select menu 'option->diagnoosis' and 'Device Test' page -> 'Voltage Test' box,
Set the 3 channel output voltage and click the 'Output' button,
Then you can get the static voltage.
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