Rohde & Schwarz 1065.6000.20, Руководство по эксплуатации

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FSE FORMat-Subsystem
1065.6016.12 6.117 E-16
FORMat Subsystem
The FORMat subsystem specifies the data format of the data transmitted from and to the instrument.
COMMAND PARAMETERS UNIT COMMENT
FORMat
[:DATA]
:DEXPort
:DSEParator
:HEADer
[:STATe]
:APPend
[:STATe]
:COMMent
ASCii|REAL|UINT[,<numeric_value>]
POINt|COMMa
<Boolean>
<Boolean>
<string>
-
:FORMat[:DATA] ASCii | REAL | UINT [, 32]
This command specifies the data format of the data transmitted from and to the instrument.
Example:
":FORM REAL,32"
":FORM ASC"
Features: *RST value: ASCii
SCPI: conforming
Modes: A, VA, BTS, MS
The data format is either ASCii or one of the formats REAL or UINT (Unsigned Integer). ASCii data
are transmitted in plain text, separated by commas. REAL data are transmitted as 32-bit IEEE 754
floating-point numbers in the "definite length block". The format UINT is only used in operating mode
Vector Signal Analysis, for the symbol table.
Format setting for the binary transmission of trace data (see also
TRACE:DATA?
):
Analyzer mode: REAL, 32
Vector analyzer: UINT, 8 with digital demodulation, symbol table
REAL, 32otherwise
Note: Incorrect format setting will result in numerical conversion, which may lead to incorrect
results.
If the format ”FORM REAL, 32” is selected for the above example, the data stream from the analyzer
to the controller is as follows:
#432085334.....
||| ||
|||..|From here follow the data bytes of the data block, here 5334
||Number of bytes of data block stated in ASCII plain text, here 3208
|ASCII byte stating the length of the subsequent length counter, here 4
Head marker of binary data stream
For this example, the number of transmitted data bytes is as follows:
Number = number of test points * bytes/value* 2
3208 = 401 * 4* 2
The FORMat command is valid for the transmission of trace data. The data format of trace data
received by the instrument is automatically recognized, regardless of the format which is
programmed.