about dbm/200khz problem..

super

Dear all :
               The doc spec write as below ,
, X9 G) ~3 G2 X4 v# d                   Frequency         Emission Level
* Q7 \" H4 d/ B5 v; C, Z8 w                2Mhz to 50Mhz    -30dbm/200khz

  i* D! F" Z! N3 d1 `. _( Z3 S. }% U             1. what's it mean ?
             2. How should I do when I measure spurious use Spectrum Analyzer ?
4 a& Z, l2 K. M. m0 U- u& j            (ex: set RBW=200khz  and measured spurious below -30dbm is pass ?
                   or others )
# b5 U; j: M% g. F9 Z

              Thanks.

super

Dear sir :
           Thanks your reply.
            To confirm again ,
1 s$ c: z6 u4 `, N1 \$ P0 i' E+ X          1. It means when I measure use Spectrum Analyser I need to set
0 e/ o7 t& s) K. v2 H" p              RBW=200Khz start=2Mhz stop=50Mhz,
; H! g7 e0 c% L4 s% i" t- V             if measured power level >-30dBm then it's fail , <-30dBm it's pass.
              Right ?

* s* [, S4 L2 o5 [( W          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
8 K$ K% [2 n7 r# Y. z1 N             and unit also different.
, J/ l$ W1 ^$ c& @& y             I don't know which part is wrong ?

           Thanks.

cqmyg5

I'm not an expert, I think "set RBW=200khz  and measured spurious below -30dbm is pass" is correct.
$ S0 H7 O- I, _8 h& ?I know another spec: -40dBm/1MHz, that's to measure dBm per 100k(RBW=100k)., then sum(10), if below -40dBm is pass.