92 Chapter 3
Mode
Occupied Bandwidth Measurement
Mode
The CALC:DATA? query will return the following:
#2421122924465,916972000,69,160,1213313125,975
This response is in standard block format. It will always begin with a #, then the next
number indicates the # digits that give the size of the block, i.e. 2. So, the next 2 digits are
the size, i.e. 42. After this is the data in a comma separated list:
1122924465: time stamp seconds
916972000: time stamp in nanoseconds
69: occupied bw start index
160: occupied bw stop index
1,213,313,125: occupied bw, in Hz
975: occupied bw power, in mdBm (milli dBm)
2Time Stamp
Nanoseconds
Time of measurement, instrument clock
in nanoseconds
3 Occupied BW Start Index Zero-based index into the Trace field that
is the beginning of the Occupied
Bandwidth. If the measurement was not
made it will contain the value 9.91E37
4 Occupied BW Stop Index Zero-based index into the Trace field that
is the end of the Occupied Bandwidth. If
the measurement was not made it will
contain the value 9.91E37
5 Occupied BW Occupied Bandwidth of the signal (in
Hz). If the measurement was not made
or if the bandwidth is too wide (exceeds
an Int32 capacity) it will contain the
value 9.91E37
6 Occupied BW Power Power (dBm * 1000) in the Occupied
Bandwidth. If the measurement was not
made it will contain the value 9.91E37
Mode Spectrum Analyzer (SA)
Remote Command :CALCulate:DATA?
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