Power Spectral Density units I am trying to compare power spectral density values (obtained from dsp.SpectrumAnalyzer) with PSD values obtained from hardware which has a VSA. 
MATLAB's documentation says that " The power spectral density is the magnitude squared of the spectrum normalized to a bandwidth of 1 hertz." and expressed in dBm/Hz

whereas the hardware expresses PSD in units  dBm/RBW per 100 kHz    So,I'm assuming that it is normalized w.r.t 100Khz bandwidth 
This is an example snippet of hardware's vsa( not my actual output)


Do I need to do any kind of conversion or something in terms of PSD ? 
For ex:  dBm-->mW--> multiply by 100e3  something like that to properly compare? Kind of confused with these units. 
MATLAB's output is off by approx 20 dBm 

Here is the output comparison 


EDIT>>>

0)  RBW is set to 100KHz on hardware and in MATLAB too
 1) I'm guessing there is a factor 100 which I need to multiply to PSD in mW to make it similar, but not sure why I need to do that 

2)The reference load for matlab is set to 1 ohm by default, whereas  hardware (litepoint ) reference impedance is 50 ohms

3) Updating basic specAnalyzer code in matlab if that helps in understanding

nSpectralAverages = 3;
specAnalyzer = dsp.SpectrumAnalyzer('SpectrumType','Power density',...
                              'SampleRate',fs);
specAnalyzer.FrequencySpan = 'Span and center frequency';
specAnalyzer.Span = psdSpanLpVSA;
specAnalyzer.SpectralAverages = nSpectralAverages;
% Resolution Bandwidth
specAnalyzer.RBWSource = 'Property';
specAnalyzer.RBW = resolutionBandwidthHz;

specAnalyzer.AveragingMethod = 'Exponential';
specAnalyzer.ForgettingFactor = 1;
% Run the spec An and get collective result
specAnalyzer(WiFi_iqData_bw20MHz);
specData = specAnalyzer.getFramework.Visual;


I'm using exponential averaging method as its pretty clean and similar to litepoint's output 

4) My other question is: Can I even compare outputs directly like this? Or should I just add the difference in spectrum peaks and then compare (after adding 50 Ohms to the MATLAB's output)

EDIT 5)
 I have converted dB/Hz (which matlab provides) to dBm/100Khz for comparison and also calculated power values for 50 ohm 

Pwr in dBm/Hz --&gt; convert to mW --&gt; multiply by 10000/50 (100e3 for 100KHz and 50 for 50 ohms conversion)  --&gt; then reconvert to dBm


Here is the output 

Any comments /suggestions

Thanks
The division should be by 100000, but I doubt that hardware is giving the result in actual milliwatts, maybe a normalization is required in the power being reported by the hardware as well followed by a subsequent normalization in bandwidth. This would require knowing how the hardware is generating this number, 

considerations like, what is amount of duration over which hardware measures this spectrum, does it average out over those durations or does it provide cumulative value which needs to be normalized.