about dbm/200khz problem..

super

Dear all :
% B! c( L8 Q8 e2 J               The doc spec write as below ,
- I4 J8 p4 Y& H& U9 p9 b1 J8 H                   Frequency         Emission Level
                2Mhz to 50Mhz    -30dbm/200khz

             1. what's it mean ?
* e8 K8 h6 ?' ]* g             2. How should I do when I measure spurious use Spectrum Analyzer ?
            (ex: set RBW=200khz  and measured spurious below -30dbm is pass ?
% V, M5 ~& E" ~7 f7 ~3 O! y2 r0 S5 P3 }                   or others )
0 x- n* S  O1 V1 ^  A) X
4 `& x( `. u+ g$ H3 v7 T0 p& Q4 k
( K/ [- H" [+ b0 K( u! m1 v$ O              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 :
7 Y& {: {' U* z9 b" T           Thanks your reply.
            To confirm again ,
  a6 |; E8 f. f3 p          1. It means when I measure use Spectrum Analyser I need to set
; k2 S$ T8 U; O& K% s8 s  \              RBW=200Khz start=2Mhz stop=50Mhz,
  u3 y9 z4 `& r             if measured power level >-30dBm then it's fail , <-30dBm it's pass.
              Right ?

  \. X5 c/ B5 C          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
" I0 m: F& ^1 ]& W8 w, U) v             and unit also different.
             I don't know which part is wrong ?

( M0 l8 O' O6 s: E) G           Thanks.