about dbm/200khz problem..

super

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

* ?3 Z8 r! }2 T; b' l: R1 j" o* K             1. what's it mean ?
             2. How should I do when I measure spurious use Spectrum Analyzer ?
            (ex: set RBW=200khz  and measured spurious below -30dbm is pass ?
- ?. e' ?0 |& h# R* r                   or others )
) j* m) @2 Y- i) L" _

2 Q) q- S; g; l- N- u, p              Thanks.

super

Dear sir :
+ d% o3 y: i0 H( D1 u           Thanks your reply.
            To confirm again ,
0 ^$ F$ l: s9 V5 \& U+ j6 Z2 l          1. It means when I measure use Spectrum Analyser I need to set
% x8 _. N: U6 q, k2 V- g0 v              RBW=200Khz start=2Mhz stop=50Mhz,
  w- D% T( j/ }  L4 |' |             if measured power level >-30dBm then it's fail , <-30dBm it's pass.
- G) T. r" _  y; h" k& g" @1 \' _              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
. @$ j5 J  j; t: c  j             and unit also different.
  [3 q: v7 z2 h5 K$ I             I don't know which part is wrong ?
, O) U8 Z, d3 T
           Thanks.

cqmyg5

I'm not an expert, I think "set RBW=200khz  and measured spurious below -30dbm is pass" is correct.
: _' ~/ E% C" JI know another spec: -40dBm/1MHz, that's to measure dBm per 100k(RBW=100k)., then sum(10), if below -40dBm is pass.