about dbm/200khz problem..

super

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

' @/ c, F2 G: k, x4 [! h- C8 a7 Q             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 ?
                   or others )
2 v0 A& v( T( u0 R; @7 E+ y) b

              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.

super

Dear sir :
8 L/ H1 a. x. i' `" I% x- B           Thanks your reply.
            To confirm again ,
: I0 e2 s. I, z          1. It means when I measure use Spectrum Analyser I need to set
              RBW=200Khz start=2Mhz stop=50Mhz,
             if measured power level >-30dBm then it's fail , <-30dBm it's pass.
9 z* s+ k* v+ s3 A              Right ?
3 x- g# B7 [( c+ P* v
: |5 |& P* d2 B) ?1 u, F5 D& u- Y$ {          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
5 n8 _5 ]# d3 j7 F9 f0 m             and unit also different.
. }1 o, D  |& a+ @; d: l, Q             I don't know which part is wrong ?
  p3 ~! K6 D! P8 K
           Thanks.