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  • Users: olinn
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  1. olinn

    use network analyzer as clock source for eye measurement?

    Hi, I am new to communication testing. I want to measure eye diagram for a 10Gb/s optical receiver. The common approach is to feed an optical modulator with PRBS patterns from a pattern generator input from a 10Gb/s clock source and use the optical modulator to modulate optical signal for DUT...
  2. olinn

    how to check if my lapack,cbas lib support long double type?

    I'm using Debian Lenny. I want to know how I can check if my lapack,cbas lib support long double type. If these libs don't support long double. I need to download the source and re-compile them with long-double option. If I do this, do the compiled new libs overwrite the old libs (which don't...
  3. olinn

    Where can I find a downloadable matlab documentation pack

    I always use matlab in a terminal window on Debian Linux to avoid sluggish and buggy java virtual machine. But I found what really bother me is how to look up documentation conveniently since the default documentation coming with matlab can only be opened by java. I know Mathworks has an...
  4. olinn

    Si/Ge pieces surface cleaning

    I used to grow materials using UHVCVD on Si wafer. To prepare the wafer, we usually did RCA cleaning followed by N2 spin dry. And the growth was successful. Recently, we want to try some growth on Si/Ge pieces, but have this surface preparation problem. The spin dry machine can only accept 4" or...
  5. olinn

    electronic component assembly

    I want to put some electronic device components (i.e. diode laser package, some wires, connectors, ...) together to make a whole device. Do you have any idea what kind of storage or package materials i can use to easily assemble them, by using, like screw, glue, anything... Anyway, i just want...
  6. olinn

    how to change tick label font size?

    How to change the font size of tick label in a figure in my codes? Thank you!
  7. olinn

    how to know the current m-file directory in the mfile

    I want to open a file with the path like this [current m-file dir]\file\filename.txt. I found i cannot do like just textread('file\filename.txt'..) in the m-file. so i think i should know the m-file directory itselt first, then do the job. do anyone know how to do this? thank you!
  8. olinn

    remote switch

    I don't know whether or not it is appropriate to ask here. I want to programmably remote switch on/off a He compressor cryostat machine. I plan to take apart the front panal of the machine, disconnect the circuit behind the "start" button and insert a programmable remote switch device. Is it...
  9. olinn

    thermal sensor question

    I have a thermal sensor which is supposed to be Pt RTD, in a vacuum chamber. But I measured the four lead output of the sensor outside the chamber is ~6.5 Ohm in room temperature. But Pt RTD should have a ~100 Ohm resistance in room temperature. Does anybody know any RTD has this range of...
  10. olinn

    cannot use matlab engine any longer

    I just upgraded my matlab from 6.5 (R13) to 7.0 (R14) and I found all my Visual C++ programs in which I used matlab engine to do calculation do not work! Does matlab 7.0 change to way to do matlab engine? Thank you!
  11. olinn

    cannot read excel string data

    When I used xlsread to read a excel file containing both numerical and string data. I got a error in Matlab as follows: Skipping 16 bytes of extended strings. ??? File does not contain valid Excel data. Invalid record ID. Error in ==> E:\MATLAB6p5\toolbox\matlab\iofun\private\biffparse.dll...
  12. olinn

    Matlab external interface with VC++ problem

    I use Matlab eng libary to run matlab codes with my MS Visual C++ project on Windows XP platform. I learned from Matlab help that one can send the matlab codes to the matlab software in another computer on UNIX platform, i.e. like a server and a terminal. Do you know if it is possible to do...

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