about dbm/200khz problem..

super

Dear all :
: _6 P' V% X: J$ R" G8 H               The doc spec write as below ,
2 a0 M+ G3 }  p! @5 o  }+ A) I                   Frequency         Emission Level
                2Mhz to 50Mhz    -30dbm/200khz
: m& ]& T% G) H5 C( }
             1. what's it mean ?
& h( M% D& z7 T: l& n             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 )


  U5 I  B$ I0 A( |* u) y' _4 r5 m              Thanks.

cqmyg5

I'm not an expert, I think "set RBW=200khz  and measured spurious below -30dbm is pass" is correct.
0 q( e+ ^/ D& j5 EI 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 :
9 \& b, [; k) O0 ?1 e, p4 Q           Thanks your reply.
! }, Y2 r7 q( v4 V            To confirm again ,
          1. It means when I measure use Spectrum Analyser I need to set
5 {0 e7 s) D# [2 z2 B              RBW=200Khz start=2Mhz stop=50Mhz,
             if measured power level >-30dBm then it's fail , <-30dBm it's pass.
5 n7 t7 q2 d! l! {( z1 O" L! R              Right ?

3 R& s2 e+ \3 v' s9 w1 \$ l  l          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
: a/ e3 T) K0 m( y             and unit also different.
* B: T% ?8 q" |8 d3 P+ X; }! C             I don't know which part is wrong ?

3 i  `7 k  @! l1 Y           Thanks.