about dbm/200khz problem..

super

Dear all :
               The doc spec write as below ,
                   Frequency         Emission Level
                2Mhz to 50Mhz    -30dbm/200khz
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             1. what's it mean ?
5 [$ w8 ?4 L) j/ m- }7 }             2. How should I do when I measure spurious use Spectrum Analyzer ?
            (ex: set RBW=200khz  and measured spurious below -30dbm is pass ?
6 Q' b- G2 D" u- y. x5 r( h/ r                   or others )
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$ }# `& ^- \/ Q1 J: {0 Z, P( H  N0 P
              Thanks.

super

Dear sir :
           Thanks your reply.
            To confirm again ,
          1. It means when I measure use Spectrum Analyser I need to set
& l6 g1 W; Q, `8 m  V              RBW=200Khz start=2Mhz stop=50Mhz,
             if measured power level >-30dBm then it's fail , <-30dBm it's pass.
              Right ?

! U( h2 O% a. k) j. _. B          2. But my boss tell me it's need below -70dbm not -30dbm , I don't know why.
             If I transfer it to dbm/hz is -83dmb/hz ,it become more severe than -70dbm
             and unit also different.
  _- n* L" Y, Y3 }8 V$ b             I don't know which part is wrong ?

, r# m& ]2 u6 L4 `2 t; Z           Thanks.

cqmyg5

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