about dbm/200khz problem..

super

Dear all :
               The doc spec write as below ,
) R% w1 v- L& a3 D7 Q- ]' U- S. ?- H1 m5 [) u                   Frequency         Emission Level
) D/ F5 z! u. {! C  ~                2Mhz to 50Mhz    -30dbm/200khz
1 H, e2 ?8 U2 U- K* ]2 x4 o8 v5 w
             1. what's it mean ?
2 q9 g1 R2 n/ h  ~, }! e             2. How should I do when I measure spurious use Spectrum Analyzer ?
            (ex: set RBW=200khz  and measured spurious below -30dbm is pass ?
% Y, `+ Q5 `! A9 k                   or others )

) l& J- o1 C" Y* w
4 y7 ]  q$ v0 P0 e3 @  _              Thanks.

super

Dear sir :
           Thanks your reply.
6 c1 A9 F( m1 T$ k            To confirm again ,
          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.
: r( ]+ {$ z; u, ?3 ^: K              Right ?

          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
9 x7 x  D* A1 V4 X; `- V             and unit also different.
. N2 p9 Q% _0 T! {. t. S* }# o             I don't know which part is wrong ?

0 y: |( _5 L, V( h; ?5 E           Thanks.

cqmyg5

I'm not an expert, I think "set RBW=200khz  and measured spurious below -30dbm is pass" is correct.
4 L: q# d! i, a9 x$ m# a- _I know another spec: -40dBm/1MHz, that's to measure dBm per 100k(RBW=100k)., then sum(10), if below -40dBm is pass.