about dbm/200khz problem..

super

Dear all :
9 O8 E: d) Q7 S. ?: o               The doc spec write as below ,
                   Frequency         Emission Level
8 r+ n3 S9 J+ v7 [                2Mhz to 50Mhz    -30dbm/200khz

0 M, m0 i! ?5 }             1. what's it mean ?
             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 )


              Thanks.

super

Dear sir :
           Thanks your reply.
            To confirm again ,
: U" M9 N" ]% O' N          1. It means when I measure use Spectrum Analyser I need to set
              RBW=200Khz start=2Mhz stop=50Mhz,
             if measured power level >-30dBm then it's fail , <-30dBm it's pass.
: a& I3 z: C- Z* \, R5 @              Right ?
: R2 K  I! l" }% j/ J
          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.
9 H. i4 ~% D/ m& G9 Y/ p$ f             I don't know which part is wrong ?

) A- b" l$ L5 C! s# v3 }+ @           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.