{"id":2191,"date":"2013-08-01T00:00:52","date_gmt":"2013-07-31T15:00:52","guid":{"rendered":"https:\/\/micronix-jp.com\/?p=2191"},"modified":"2023-03-20T17:22:40","modified_gmt":"2023-03-20T08:22:40","slug":"zigbee_ieee","status":"publish","type":"post","link":"https:\/\/micronix-jp.com\/english\/note\/application\/zigbee_ieee.html","title":{"rendered":"Simple test of the Radio Law and IEEE on ZigBee module"},"content":{"rendered":"

System for simple test of the Radio Law and IEEE utilizing a real time spectrum analyzer<\/p>\n\n\n

Application<\/h2>\n

RF transmission characteristic test of equipment with built-in antenna, which is regulated in the technical standard conformity certification and IEEE, can be easily measured combining real time spectrum analyzer MSA500 series and anechoic box. By limiting specifications or applications, it is possible to construct an inexpensive system. <\/p>\n

The physical layer test of ZigBee is regulated in the technical standard conformity certification and IEEE802.15.4-2003.<\/p>\n\n\n\n

Solution<\/h2>\n

Test contents of the technical standard conformity certification \uff08reference\uff09<\/h3>\n
    \n
  1. Frequency deviation<\/li>\n
  2. Occupied and spread bandwidth<\/li>\n
  3. Spurious radiation strength<\/li>\n
  4. Transmission power<\/li>\n
  5. Limit on secondary radiated emission<\/li>\n
  6. Angular width of main radiation of antenna<\/li>\n
  7. Interference prevention function<\/li>\n<\/ol>\n\n

    Test contents of IEEE \uff08reference\uff09<\/h3>\n
      \n
    1. Spectrum mask test<\/li>\n
    2. EVM\uff08Error vector magnitude\uff09<\/li>\n
    3. Carrier frequency error<\/li>\n
    4. Spurious radiation strength<\/li>\n
    5. Transmission power<\/li>\n<\/ol>\n\n

      Note. * MSA500 series doesn't have the modulation analysis function. <\/p>\n\n

      Connection example<\/h3>\n\"Figure:Connection\n\n

      Example of Ch15 (2480MHz)<\/h3>\n\n
      \n

      \"Photo:Reference<\/p>\n\t

      \n \"Photo:Reference<\/p>\n

      In the measurement of \"spurious radiation strength\" and \"limit on secondary radiated emission\", a spectrum analyzer with 12.5GHz or more bandwidth is required. However, MSA500 series is utilizable if limited by third harmonic (7.4 GHz).
      \n*Measuring frequency range of MSA558\uff1a20kHz to 8.5GHz<\/p>\n<\/div>\n \n

      \"Photo:Reference\n

      \"EVM\" and \"frequency carrier error\" can't be measured since the modulation analysis function isn't installed. However, it is possible to observe the raw constellation waveform of Offset-QPSK modulation.<\/p>\n<\/div>\n \n

      \"Photo:Reference\n

      Example of \"Occupied bandwidth\" required by the Radio Law<\/p>\n<\/div>\n \n

      \"Photo:Reference\n

      Example of \"Spread bandwidth\" required by the Radio Law<\/p>\n<\/div>\n\n\n\n\n

      System configuration<\/h2>\n\n\n\n\n\n\n<\/tfoot>\n<\/table>\n\n\n\n

      Products introduction<\/h2>\n

      Handheld signal analyzer MSA558 <\/a><\/td>\n<\/tr>\n
      Electromagnetic anechoic box \/ MY1530 \uff0b I\/F module <\/a><\/td>\n<\/tr>\n
      Others, Antenna, cables and adapter<\/td>\n<\/tr>\n<\/tbody>\n