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Recent content by lcg22

  1. lcg22

    Where can find accelerometer that can work at -40 degree

    Where can find accelerometer (IEPE) that can work at -40 degree Celsius and elevation above 10000m? Thanks a lot.
  2. lcg22

    how to choose incremental encoder?

    how about using a counter to measure the encoder output? then the high output freq is not a problem. most counter has a 20MHz+ time base. take an example NI 6602.
  3. lcg22

    Where can I find infomation on F3E (walkie talkie modulation

    f3e modulation Could I anybody explain F3E mofulation scheme for me? If you guys could upload some material on F3E, I will appreciate very much. Thanks.
  4. lcg22

    Who has experience on audio testing?

    What's the meaning of the following specs? Thanks a lot. :) What does "M+S: 30%" mean? Residual modulation (what's this?) FM component: (AF 1 kHz, FM 75 kHz) ³ 90 dB (10.7 ± 1/76 to 108 MHz) ³ 80 dB (0.3 to 280 MHz) (BW 50 Hz to 15 kHz) (De-emphasis 50 µs) AM component: (AF 1 kHz, AM 30 %) ³...
  5. lcg22

    anyone has experience on radio testing

    I cannot find this book, Does anybidy have any suggestion? Thanks.
  6. lcg22

    anyone has experience on radio testing

    I used radio testing, it may not be precise. But please look at the following terms. Can anybody recommend some reading for me to understand these terms? Thanks in advance. M+S % Pre-emphasis (us) Pre-emphasis FRF Station Selectivity Alignment Station CDSP Alignment
  7. lcg22

    how to generate 10M input to the CLKIN pin?

    I just have aquestion on VCO/VCXO. Who can tell me what is the difference between frequency stability and frequency accuracy?
  8. lcg22

    Fuzzy control of a pendulum problem

    Who can recommend more resource on this subject? Currently, I am doing a project on inverted pendulum, but i am totally new in this area.
  9. lcg22

    What's the difference between AGC and ALC?

    alc vs agc Anther question, how to measure(not the definition) the SNDR? Thanks.
  10. lcg22

    Anyone has experience in choosing or comparing DAQ PCB card?

    Thanks for reply. I do know my requirements, such as sampling rate, resolution, input range, bandwidth. My current concern is how to compare two cards with similar specs? put it another way, how to measure the actual characteristics of the DAQ cards? eg. how to measue dynamic range, temperature...
  11. lcg22

    Anyone has experience in choosing or comparing DAQ PCB card?

    Anyone has experience in choosing or comparing DAQ PCB card? I need a methodological approach in comparing two analog data acquisition cards. Andybody can help me out? Thanks a lot. Regards, lcg22
  12. lcg22

    Anyone has experience in choosing or comparing DAQ PCB?

    Anyone has experience in choosing or comparing DAQ PCB card? I need a methodological approach in comparing two analog data acquisition cards. Andybody can help me out? Thanks a lot. Regards, lcg22
  13. lcg22

    who can recommend some good LabVIEW forum?

    Thank you very much. But this seems to be a newly set up forum, there are few members. Can you recommend some forum with large user base? Thanks.
  14. lcg22

    who can recommend some good LabVIEW forum?

    Thanks.
  15. lcg22

    Looking for Cadence IC5.0 Tutorial

    **broken link removed** **broken link removed**
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