about dbm/200khz problem..

super

Dear all :
               The doc spec write as below ,
' o8 u, l0 U% c2 E2 t                   Frequency         Emission Level
8 E% u$ O! o7 w4 s6 K& ~                2Mhz to 50Mhz    -30dbm/200khz
1 C9 F. C: F) N: {% g; M' g
+ l: o, \6 M  ?; O. G" F& T' r0 c             1. what's it mean ?
" }* Y# D* g9 t  y             2. How should I do when I measure spurious use Spectrum Analyzer ?
) G, _! ^. {. j- Q            (ex: set RBW=200khz  and measured spurious below -30dbm is pass ?
                   or others )
, N6 U* b: {5 m" x0 k
3 Z' d5 |2 ~7 s. ^+ J; T
              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.

super

Dear sir :
           Thanks your reply.
            To confirm again ,
. x% ?" A# P' a9 g/ H* a$ M$ Q          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.
( Q8 M1 h& O& A* x, z0 L+ z              Right ?

0 V8 H1 s2 F. Q          2. But my boss tell me it's need below -70dbm not -30dbm , I don't know why.
2 E: ?; B5 z' A             If I transfer it to dbm/hz is -83dmb/hz ,it become more severe than -70dbm
             and unit also different.
! l1 R: c, D& k7 j8 K             I don't know which part is wrong ?
2 [7 S8 y8 ?* q) F  b) k
           Thanks.