Rohde & Schwarz FSVA - 4.2.3.22 Formats for Returned Values: ASCII Format and Binary Format

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FSVA/FSV
913Operating Manual 1176.7510.02 ─ 09
4.2.3.22 Formats for Returned Values: ASCII Format and Binary Format
ASCII Format (FORMat ASCII)
The command reads out a list of comma separated values (CSV) of the measured val-
ues in floating point format.
Reading out data in binary format is quicker than in ASCII format. Thus, binary format
is recommended for large amounts of data.
Binary Format (FORMat REAL,32)
The command reads out binary data (Definite Length Block Data according to IEEE
488.2), each measurement value being formatted in 32 Bit IEEE 754 Floating-Point-
Format.
Depending on the number of samples to be transferred, 2 different kinds of syntax are
used:
For <10
10
samples:
The schema of the result string is as follows:
#<NoOfDigits><NoOfDataBytes><value1><value2>…<value n>, with
# Header prefix, 1 byte
<NoOfDigits> Number of digits of the following number of data bytes (= 4 in the example), 1 byte
<NoOfDataBytes> Number of following data bytes in decimal form (= 1024 in the example), 1...9 bytes
<Value> Data values, each one is a 4-byte floating point value
Example:
#41024<value1><value2>…<value 256>
4: the following number of data bytes has 4 digits
1024: 1024 Bytes of following data; float: 4 Bytes / value => 1024 / 4 = 256 values (128
I and 128 Q values)
<value x>: 4 Byte values, must be interpreted as float
For ≧10
10
samples:
The schema of the result string is as follows:
#(<NoOfDataBytes>)<value1><value2>…<value n>, with
# Header prefix, 1 byte
( 1 byte
<NoOfDataBytes> number of following data bytes (= 1024 in the example), 10 bytes
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