im trying to use the PN Mode to calculate the phase noise
like this:
CALC:LPL:DEC:TABLE ON
LPL:FREQ:OFFS:START 10
LPL:FREQ:OFFS:STOP 10E6
INITIATE:RESTART
then it shows the result on the DecadeTable like :
_______trace1 trace2 trace3
1Hz______- - -
10Hz_____a - -
100Hz____b - -
1MHz_____c - -
10MHz____d - -
How can i get the values (a,b,c,d) ? By using which cmds?
and PLZ give me a example of the return Words... thanks very much
like this:
CALC:LPL:DEC:TABLE ON
LPL:FREQ:OFFS:START 10
LPL:FREQ:OFFS:STOP 10E6
INITIATE:RESTART
then it shows the result on the DecadeTable like :
_______trace1 trace2 trace3
1Hz______- - -
10Hz_____a - -
100Hz____b - -
1MHz_____c - -
10MHz____d - -
How can i get the values (a,b,c,d) ? By using which cmds?
and PLZ give me a example of the return Words... thanks very much
After performing an init:restart or a “read:lpl?”, send the command “fetch:lpl6?” to read back the decade table:
Here is what is listed in the Phase Noise Programming manual for the 6th trace result for the “read:lpl[n]?” command (http://cp.literature.agilent.com/litweb ... -90328.pdf)
Returns a comma-separated list of the data points which represent the values found on each trace at each decade offset frequency. The points in the list are returned in the following order: Frequency Offset, Trace number 1 (yellow) amplitude, Trace number 2 (cyan blue) amplitude and Trace number 3 (magenta pink) amplitude. Any data points that do not have an associated trace, or any data points not covered by a particular frequency will return SCPI_NAN. The total number of values listed can be calculated by multiplying the number of decades by 4, and adding 4.
Regards -