about dbm/200khz problem..

super

Dear all :
               The doc spec write as below ,
                   Frequency         Emission Level
                2Mhz to 50Mhz    -30dbm/200khz
! t8 q% ?5 {2 S+ P( g- z
; b& G- F- A' W( n9 `$ w9 s/ |             1. what's it mean ?
8 v1 j5 z8 N6 k7 [             2. How should I do when I measure spurious use Spectrum Analyzer ?
            (ex: set RBW=200khz  and measured spurious below -30dbm is pass ?
' ?# T, m/ z, {! z                   or others )
+ s+ J6 M- s: r, m7 E7 d

+ e5 a) E3 j) L8 U: P              Thanks.

cqmyg5

I'm not an expert, I think "set RBW=200khz  and measured spurious below -30dbm is pass" is correct.
+ f" Q! J7 z, p5 YI 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 :
           Thanks your reply.
            To confirm again ,
* p* y* L4 F4 k$ A) U          1. It means when I measure use Spectrum Analyser I need to set
5 Q  M& Q! f' }) A: I              RBW=200Khz start=2Mhz stop=50Mhz,
' v# Q! t8 C! [# W# E# M             if measured power level >-30dBm then it's fail , <-30dBm it's pass.
6 S: T; c4 t, c" }6 d- l              Right ?

          2. But my boss tell me it's need below -70dbm not -30dbm , I don't know why.
/ T* C2 W; n* N             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 ?
# A+ u5 d, x! m9 p8 r
           Thanks.