about dbm/200khz problem..

super

Dear all :
               The doc spec write as below ,
                   Frequency         Emission Level
                2Mhz to 50Mhz    -30dbm/200khz

" j; I. ^* {( M7 n$ F             1. what's it mean ?
% j4 n" _8 J7 @1 b: u             2. How should I do when I measure spurious use Spectrum Analyzer ?
: I0 q% s' j, o# N9 ~            (ex: set RBW=200khz  and measured spurious below -30dbm is pass ?
                   or others )
% [7 \& h5 F9 m5 F& j" \! {

              Thanks.

super

Dear sir :
           Thanks your reply.
            To confirm again ,
          1. It means when I measure use Spectrum Analyser I need to set
              RBW=200Khz start=2Mhz stop=50Mhz,
3 G; d9 N3 }- p4 I5 {4 v+ z             if measured power level >-30dBm then it's fail , <-30dBm it's pass.
              Right ?
; M( B; h2 X% l
" K# C: P0 O' U1 N! y          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
* r4 @9 _2 M$ |( s* s% q             and unit also different.
; `1 {# R. J" A: n% T             I don't know which part is wrong ?

           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.