User Tools

Site Tools


hardware:hardware.dbbc.power_measure

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revision Previous revision
hardware:hardware.dbbc.power_measure [2012/03/29 02:55]
Stuart Weston
hardware:hardware.dbbc.power_measure [2012/04/01 23:31] (current)
Stuart Weston
Line 3: Line 3:
 === New Zealand DBBC 09/06/2011 === === New Zealand DBBC 09/06/2011 ===
  
-Testing of DBBC power measurement device reveals that it has a **logarithmic output response**!!+Testing of DBBC power measurement device reveals that it has a **logarithmic output response**!! ​This is for the "​dbbcifa"​ command as it has to cover -3dBm to -48dBm (Gino on site at Warkworth 1/4/2012).
  
 Update:​13/​6/​2011:​ Logarithmic response verified, 37 mV/dB according to data sheet {{:​hardware:​hmc610lp4-datasheet.pdf|}} Update:​13/​6/​2011:​ Logarithmic response verified, 37 mV/dB according to data sheet {{:​hardware:​hmc610lp4-datasheet.pdf|}}
Line 18: Line 18:
  
 I'll attach the FS s/w for this in due course. I'll attach the FS s/w for this in due course.
 +
 +=== dbbc01 ===
 +
 +The "​dbbc01"​ commnad gives power readings in a linear scale. But only for the sub-band of the total band set. (Gino on site at Warkworth 1/4/2012). If you have set dbbc01 to have a freq of 750MHz and a bandwidth of 16MHz, then you only get a linear power reading for the 16MHz part of the full 512MHz band centered on 750MHz.
 +
 +
 +
/home/www/auscope/opswiki/data/pages/hardware/hardware.dbbc.power_measure.txt · Last modified: 2012/04/01 23:31 by Stuart Weston