about dbm/200khz problem..

super

Dear all :
' P& Z, {* F4 C9 o$ P5 h" v0 e               The doc spec write as below ,
/ b- N/ Q/ u  \, Q7 c, j( ]  a                   Frequency         Emission Level
                2Mhz to 50Mhz    -30dbm/200khz
, s5 A! ~# h; y
/ G/ a7 _$ m5 B# G. f             1. what's it mean ?
             2. How should I do when I measure spurious use Spectrum Analyzer ?
8 W' V) o/ }2 Z9 q' X! K/ e" h            (ex: set RBW=200khz  and measured spurious below -30dbm is pass ?
                   or others )
- ^  a( R' I! o% |$ ^- h
; j4 i6 W& H) g/ }  v- Q/ f: d
              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 :
, w2 \$ c+ k7 T4 ?% h  p8 x           Thanks your reply.
            To confirm again ,
( T+ E+ ~, w: R' k          1. It means when I measure use Spectrum Analyser I need to set
              RBW=200Khz start=2Mhz stop=50Mhz,
, Q  C  X8 P8 d% J             if measured power level >-30dBm then it's fail , <-30dBm it's pass.
              Right ?

) D, x& V* G) p/ ~  t  X          2. But my boss tell me it's need below -70dbm not -30dbm , I don't know why.
; p/ q: B6 X* _6 |& n3 I             If I transfer it to dbm/hz is -83dmb/hz ,it become more severe than -70dbm
             and unit also different.
             I don't know which part is wrong ?

/ z' m1 c- ?3 ^5 _) X, Q! V           Thanks.