about dbm/200khz problem..

super

Dear all :
3 j; ]7 V9 ~' h1 H+ F% d1 L# f$ X               The doc spec write as below ,
                   Frequency         Emission Level
. N$ r* [6 p; W1 J# t' F' N                2Mhz to 50Mhz    -30dbm/200khz
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             1. what's it mean ?
! ~9 s( b% i% S- l- t: m; L             2. How should I do when I measure spurious use Spectrum Analyzer ?
            (ex: set RBW=200khz  and measured spurious below -30dbm is pass ?
: I3 O9 Y0 o4 ~0 @( ^                   or others )

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              Thanks.

cqmyg5

I'm not an expert, I think "set RBW=200khz  and measured spurious below -30dbm is pass" is correct.
* R( k2 a  p* |: i, @7 |6 ^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 :
2 b' `. |; u1 R) p8 I           Thanks your reply.
1 U/ R, p2 f. ]            To confirm again ,
3 R8 n; E; M9 W' l, K          1. It means when I measure use Spectrum Analyser I need to set
) o. Y/ Y' {& V) Y              RBW=200Khz start=2Mhz stop=50Mhz,
             if measured power level >-30dBm then it's fail , <-30dBm it's pass.
% A; v+ Y! A6 \, F  y              Right ?

          2. But my boss tell me it's need below -70dbm not -30dbm , I don't know why.
5 F1 M6 i0 i6 P9 M1 f             If I transfer it to dbm/hz is -83dmb/hz ,it become more severe than -70dbm
2 T3 i: h, ^$ Z8 R4 Z$ \0 j8 ~! W             and unit also different.
( Y/ R! X2 T4 e1 P: z             I don't know which part is wrong ?
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! V; V, [/ B9 b2 \4 _           Thanks.