Operating instructions

R&S ESCI TRACe Subsystem
1166.6004.12 6.223 E-1
Return values:
The returned values are scaled in the current level unit. Returned FM-modulated measurement
values (activated option R&S FS-K7) are scaled in Hz.
ASCII format (FORMat ASCII):
In ASCII format, a list of values separated by commas is returned (Comma Separated Values =
CSV).
The number of measurement points is 501.
Binary format (FORMat REAL,32):
If the transmission takes place using the binary format (REAL,32), the data are transferred in block
format (Definite Length Block Data according to IEEE 488.2). They are arranged in succeeding lists
of I and Q data of 32 Bit IEEE 754 floating point numbers. General structure of return string:
#42004<meas value 1><meas value value2>...<meas value 501>
with
#4 digits of the subsequent number of data bytes (4 in the example)
2004 Number of the subsequent data bytes (2004 in the example)
<meas value x> 4 byte floating point measurement values
Saving and recalling:
Saving and recalling trace data together with the device settings to/from the device-internal hard disk
or to/from a floppy is controlled via the commands "MMEMory:STORe:STATe" and
"MMEMory:LOAD:STATe" respectively. Trace data are selected with
"MMEMory:SELect[:ITEM]:ALL" or "MMEMory:SELect[:ITEM]:TRACe". Trace data in
ASCII format (ASCII FILE EXPORT) are exported with the command "MMEM:STORe:TRACe".
The commands for final measurement data are "MMEMory:SELect[:ITEM]:FINal" and
"MMEM:STORe:FINal".
Transfer format:
The trace data are transferred in the current format (corresponding to the command FORMat
ASCii|REAL). The device-internal trace memory is addressed using the trace names 'TRACE1' to
'FINAL3'.
The transfer of trace data from the control computer to the instrument takes place by indicating the
trace name and then the data to be transferred. In ASCII format, these data are values separated by
commas. If the transfer takes place using the format real (REAL,32), the data are transferred in
block format.
The command "MMEMory:STORe:STATe" or "MMEMory:LOAD:STATe" controls the storage or
loading of measured data, including the device settings, on or from the internal hard disk or floppy
disk. The trace data is selected via "MMEMory:SELect[:ITEM]:ALL" or
"MMEMory:SELect[:ITEM]:TRACe". The trace data in ASCII format (ASCII FILE EXPORT) is
exported via the "MMEM:STORe:TRACe" command.
The parameter of the query is the trace name TRACE1 to FINAL3, it indicates which trace memory
will be read out.