Keysight Technologies M9506A-BC1, Инструкция по эксплуатации, Страница: 60 / 96

4 SCPI Programming Interface
60 M9506A-BC1 5-Slot AXIe Chassis with Integrated Controller User Guide
Returns as std_string.
Example
-> dig3:cloc:ref:sour?
<- INT
:DIGitizer[N]:FETCh[M]:SCALe?
Query
:DIGitizer[N]:FETCh[M]:SCALe?
Description This query returns the floating-point scaleFactor and scaleOffset values.
Run this query after running the query for data. Presently, scale factor and offset
are populated to registers on digitizer after data has been queried. Fetch scaling
terms after fetching data, std_flt64.
Example
-> dig3:fetc:scal?
<- +1.52587891E-005,+0.00000
:DIGitizer[N]:FETCh[M]:[RAW]?
Query
:DIGitizer[N]:FETCh[M]:[RAW]?
Description This query returns a single binary block in Int16 of raw data values absent of
scaleFactor and scaleOffset. All data on the digitizer is transferred at one time,
whether it be s single acquisition or a multi-record acquisition. Since this is a
digitizer and the user must configure sample rate, acquisition depth, number of
records if a multi-record acquisition is being acquired, all that is returned on a data
fetch command is the raw data with no header. If no data was acquired, no data
will be returned. Once a digitizer is armed, access to the previous data record is
lost. The data returned is Int16, little endian. To calculate voltage values, the scale
factor and offset will need to be integrated into the raw data values using the
function V=(scaleFactor*data) + scaleOffset. Size of block returned is dependent
on setting of record size using ‘:DIG[N]:RSIZ’ command and number of records
acquired using ‘:DIG[N]:RNUM’.
Example
-> dig3:fetc1?
<- BINBLOCK