RF Measurements  CMU 
1100.4903.12 6.62  E-10 
Measured Values – Subsystem NPOWer? 
The subsystem NPOWer? retrieves the results of the narrow-band power measurement (see general 
information on p. 6.59). 
 
READ[:SCALar]:NPOWer?    Start single shot measurement and return results
FETCh[:SCALar]:NPOWer?
    Read out measurement results (unsynchronized)
SAMPle[:SCALar]:NPOWer?
    Read out measurement results (synchronized)
Returned values 
Value range  Def. value  Def. unit  FW vers. 
Avg. Power of Current evaluation period, 
Min. Power of Current evaluation period, 
Max. Power of Current evaluation period, 
Avg. Power ref. to the last stat. cycle, 
Min. Power of the entire measurement, 
Max. Power of the entire measurement 
Frequency 
–137 dBm to +53 dBm 
–137 dBm to +53 dBm 
–137 dBm to +53 dBm 
–137 dBm to +53 dBm 
–137 dBm to +53 dBm 
–137 dBm to +53 dBm 
10 kHz to 2.7 GHz 
NAN 
NAN 
NAN 
NAN 
NAN 
NAN 
NAN 
dBm 
dBm 
dBm 
dBm 
dBm 
dBm 
Hz 
V3.07 
Description of command 
These commands are always queries. They start the NPOWer measurement and return the results. As the CMU 
is capable of determining frequencies with an accuracy of 0.1 Hz, the frequency is returned in exponential rep-
resentation and with a 10-digit mantissa.