about dbm/200khz problem..

super

Dear all :
" x1 S' v% C4 @3 Z  s% I4 ?/ O               The doc spec write as below ,
                   Frequency         Emission Level
$ e; \2 Y/ W: n1 t                2Mhz to 50Mhz    -30dbm/200khz
7 K* u+ v+ j0 V) a( W* F9 f0 n
3 A) `/ H0 \1 G: `' U             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 )

9 O) a" u- U2 N3 I
              Thanks.

cqmyg5

I'm not an expert, I think "set RBW=200khz  and measured spurious below -30dbm is pass" is correct.
! G9 c' _4 E/ m: w% ?8 [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 :
           Thanks your reply.
            To confirm again ,
: N0 `6 j0 r2 m0 \; A( Y          1. It means when I measure use Spectrum Analyser I need to set
2 V3 @" `  T' W2 w' b              RBW=200Khz start=2Mhz stop=50Mhz,
$ L& _( x* E5 ?" q8 n             if measured power level >-30dBm then it's fail , <-30dBm it's pass.
' X* J- k5 b; ~# h              Right ?
2 }3 C9 e  u: |2 t% X- _
          2. But my boss tell me it's need below -70dbm not -30dbm , I don't know why.
/ a. c# p9 [2 c/ |             If I transfer it to dbm/hz is -83dmb/hz ,it become more severe than -70dbm
             and unit also different.
" ?: A* M9 t: \/ X9 |) Y( M             I don't know which part is wrong ?
* z% L. X& Z/ Z+ G+ s) B
           Thanks.