about dbm/200khz problem..

super

Dear all :
* w+ [0 i' Y. Q1 _               The doc spec write as below ,
                   Frequency         Emission Level
                2Mhz to 50Mhz    -30dbm/200khz

             1. what's it mean ?
             2. How should I do when I measure spurious use Spectrum Analyzer ?
2 j* [* _0 Y2 j9 M            (ex: set RBW=200khz  and measured spurious below -30dbm is pass ?
$ }/ R  c1 w% }+ F; b( o  F                   or others )
( V8 d, n( x7 W* C0 M& Y; |$ c

              Thanks.

super

Dear sir :
           Thanks your reply.
            To confirm again ,
          1. It means when I measure use Spectrum Analyser I need to set
              RBW=200Khz start=2Mhz stop=50Mhz,
0 g7 F9 i  ]% M3 P             if measured power level >-30dBm then it's fail , <-30dBm it's pass.
              Right ?
! B" e& x- u, t" x4 B+ g
4 R% |0 h  b) ^" ~0 E/ I          2. But my boss tell me it's need below -70dbm not -30dbm , I don't know why.
) W. ^1 c" h% q# ]) q! f             If I transfer it to dbm/hz is -83dmb/hz ,it become more severe than -70dbm
- y& r/ w' E# [2 g             and unit also different.
             I don't know which part is wrong ?
- j" [# K, D6 S$ o% k7 g
' C( D$ W0 |; Q           Thanks.

cqmyg5

I'm not an expert, I think "set RBW=200khz  and measured spurious below -30dbm is pass" is correct.
8 |2 o' U  E9 @I know another spec: -40dBm/1MHz, that's to measure dBm per 100k(RBW=100k)., then sum(10), if below -40dBm is pass.