about dbm/200khz problem..

super

Dear all :
               The doc spec write as below ,
                   Frequency         Emission Level
9 L& i+ k) }* Z                2Mhz to 50Mhz    -30dbm/200khz

4 I- t# v3 p( O' E7 V7 b+ t. C4 c             1. what's it mean ?
7 E1 r7 t6 s0 C7 [( U3 H5 k             2. How should I do when I measure spurious use Spectrum Analyzer ?
            (ex: set RBW=200khz  and measured spurious below -30dbm is pass ?
. L, s: h( H4 N4 J5 @9 \' Y                   or others )
0 A; r+ u  G; A
# S! C8 h. d  |& `9 _0 q1 D
8 ^6 h3 L5 ~, r$ C( \9 H( T3 R; Y" p              Thanks.

super

Dear sir :
& m, H* }5 }2 [0 D' o           Thanks your reply.
            To confirm again ,
5 h/ g# t1 Q) i0 [5 x" A          1. It means when I measure use Spectrum Analyser I need to set
; }  d2 j& J! m$ q              RBW=200Khz start=2Mhz stop=50Mhz,
             if measured power level >-30dBm then it's fail , <-30dBm it's pass.
+ `7 u: k& k$ N              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
             and unit also different.
             I don't know which part is wrong ?
$ `5 N  i/ q- j3 v: m8 T& U% ^6 d6 e
           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.