about dbm/200khz problem..

super

Dear all :
) ], t7 a% u0 w               The doc spec write as below ,
+ u+ {5 P- k. x( p4 V                   Frequency         Emission Level
# `/ b7 _/ U& b8 E$ t                2Mhz to 50Mhz    -30dbm/200khz
! @4 @  G6 i' J" X9 Z, m
             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 ?
: u6 D) h. }# }: f: G                   or others )

/ {  M  u( S$ x7 z8 P
              Thanks.

cqmyg5

I'm not an expert, I think "set RBW=200khz  and measured spurious below -30dbm is pass" is correct.
$ Q+ g" |. p9 R8 O7 h, }1 o! pI 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.
: H8 B. I6 P: b- n. d1 s* T            To confirm again ,
8 k/ b" c6 Z4 ]5 M          1. It means when I measure use Spectrum Analyser I need to set
. X" ?+ u$ y9 I              RBW=200Khz start=2Mhz stop=50Mhz,
- z+ }0 R7 X3 y             if measured power level >-30dBm then it's fail , <-30dBm it's pass.
1 g$ |& N8 W6 b( {) D5 }/ B              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
$ Z) ?" I3 _' E$ f% a8 Z) ^, k             and unit also different.
             I don't know which part is wrong ?

" ~* D: b! c, A7 T' o9 a           Thanks.