Trace Data Transfer Sizes - Agilent Technologies 8712ET Programmer's Manual

Table 6-2
Format Type
(FORMat:DATA)
REAL,32
REAL,64
ASCII,5
ASCII,3
INT,16
Trace Data Transfers
Using Binary Data Encoding

Trace Data Transfer Sizes

The following table shows how many bytes are transmitted during trace
data transfers. The left column shows the format of the data, which you
can specify using the SCPI command Format:DATA. As you can see, the
size of the measurement point data and trace data varies as you change
format.
Trace Data Transfer Size Using TRACE:DATA Command
Type of
Data
IEEE 32-bit
Floating
Point
IEEE 64-bit
Floating
Point
ASCII
numbers
ASCII
numbers
Internal
Binary
When transmitting data in "REAL" or "INT" format, a header is sent
before the data block. The header indicates the size of the data block. The
header size varies in length from 3 to 11 bytes. Refer to
Types and Encoding,"
Transmitting ASCII data requires no header. The ASCII values are
separated by commas, and a linefeed is sent after the last value. The
sizes shown in the table include the size of the comma(s) and terminating
linefeed. Typical data in ASCII,5 format:
-1.2254E+000,+5.0035E-001,+4.5226E-001,...
6-8
Size of Single
Measurement Point
(bytes)
Real Complex
4 8
8 16
13 26
11 22
— 8
for details on the header.
Size of 201 Point
Trace
(bytes)
Real Complex
809 1614
1614 3222
2613 5226
2211 4422
— 1614
Chapter 4, "Data
Programmer's Guide