about dbm/200khz problem..

super

Dear all :
' k! D% Y! L' A* I9 P5 |               The doc spec write as below ,
+ c4 J6 ]) e- k2 \                   Frequency         Emission Level
7 V4 B5 P: r3 E. T9 z+ K                2Mhz to 50Mhz    -30dbm/200khz

9 M; a9 o0 p0 z4 r/ J             1. what's it mean ?
             2. How should I do when I measure spurious use Spectrum Analyzer ?
: d+ F$ W* k- B6 j# l            (ex: set RBW=200khz  and measured spurious below -30dbm is pass ?
                   or others )
. c8 W1 }7 I' |0 F. y4 T
. r& ~1 H0 S! ^$ J  Z
              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 :
           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,
1 U/ m: R% |. f6 e6 Y5 v, B6 @             if measured power level >-30dBm then it's fail , <-30dBm it's pass.
  K( @+ z0 z4 b$ l              Right ?

" K- w* [& I) D5 K6 Q2 n! O% x# X          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
             and unit also different.
5 ^' a/ O, O1 M& r! A             I don't know which part is wrong ?
0 L- ~% i0 I5 J" w, u' B& h
           Thanks.