about dbm/200khz problem..

super

Dear all :
               The doc spec write as below ,
( V/ u1 y! o  C% `/ ~                   Frequency         Emission Level
" J" [1 F: `! x7 _                2Mhz to 50Mhz    -30dbm/200khz

4 L0 y; ?4 \5 `3 q$ P; t             1. what's it mean ?
$ F; i+ U( k" x. j  d  r9 h             2. How should I do when I measure spurious use Spectrum Analyzer ?
            (ex: set RBW=200khz  and measured spurious below -30dbm is pass ?
                   or others )
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5 R$ Q; o5 [) I6 |
% f6 }1 v0 o3 _! I% }) p              Thanks.

cqmyg5

I'm not an expert, I think "set RBW=200khz  and measured spurious below -30dbm is pass" is correct.
' c% I/ W, L1 MI know another spec: -40dBm/1MHz, that's to measure dBm per 100k(RBW=100k)., then sum(10), if below -40dBm is pass.

super

Dear sir :
4 P7 _: ^) Q0 z# |* U1 {           Thanks your reply.
$ u. w' d. t( R# x5 n! E+ e            To confirm again ,
          1. It means when I measure use Spectrum Analyser I need to set
              RBW=200Khz start=2Mhz stop=50Mhz,
  L- v  q5 J* \5 I& D' W             if measured power level >-30dBm then it's fail , <-30dBm it's pass.
              Right ?

          2. But my boss tell me it's need below -70dbm not -30dbm , I don't know why.
5 v' c6 @' ~7 M( K9 S5 b             If I transfer it to dbm/hz is -83dmb/hz ,it become more severe than -70dbm
             and unit also different.
! Q  H9 G2 P+ S8 g* ~             I don't know which part is wrong ?
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0 `9 O* p. s' [3 D) o+ h5 M2 r           Thanks.