about dbm/200khz problem..

super

Dear all :
, ^" K$ J) u0 l) b+ x               The doc spec write as below ,
' \1 R  |/ [3 T; j8 u                   Frequency         Emission Level
                2Mhz to 50Mhz    -30dbm/200khz
, Q" r# m. u  C; n
0 Z% B& e; v! U2 v$ j. m             1. what's it mean ?
             2. How should I do when I measure spurious use Spectrum Analyzer ?
( J& f5 e' o5 H& W            (ex: set RBW=200khz  and measured spurious below -30dbm is pass ?
                   or others )

2 `) \4 i) H+ n3 u# v* _
! D9 t1 s1 w* [              Thanks.

super

Dear sir :
           Thanks your reply.
+ X0 r9 O$ h- q- v, ?: U            To confirm again ,
( M8 @$ N  C) G2 P1 _          1. It means when I measure use Spectrum Analyser I need to set
, Z6 H) K4 S% x  P  s/ K              RBW=200Khz start=2Mhz stop=50Mhz,
             if measured power level >-30dBm then it's fail , <-30dBm it's pass.
" V* [* I( m) z  _. S) ]( i2 D+ E              Right ?
: L: P2 Q0 i1 Q0 Q
* w+ k7 ~% J! e+ ~1 t4 i          2. But my boss tell me it's need below -70dbm not -30dbm , I don't know why.
$ @9 U) n. A4 z             If I transfer it to dbm/hz is -83dmb/hz ,it become more severe than -70dbm
7 W* o/ `2 ^' V& M. G9 G% J; P             and unit also different.
9 I& M2 z" w2 _+ {5 c! w5 H             I don't know which part is wrong ?
% `6 y% F0 A( ~# ~: J0 J* f/ ~
           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.