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6-8
Programmer’s Guide
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.
Table 6-2
Trace Data Transfer Size Using TRACE:DATA Command
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
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,...
Format Type
(
FORMat:DATA
)
Type of
Data
Size of Single
Measurement Point
(bytes)
Size of 201 Point
Trace
(bytes)
Real
Complex
Real
Complex
REAL,32
IEEE 32-bit
Floating
Point
4
8
809
1614
REAL,64
IEEE 64-bit
Floating
Point
8
16
1614
3222
ASCII,5
ASCII
numbers
13
26
2613
5226
ASCII,3
ASCII
numbers
11
22
2211
4422
INT,16
Internal
Binary
—
8
—
1614
Summary of Contents for 8712ES
Page 11: ...1 1 1 Introduction to GPIB Programming ...
Page 27: ...2 1 2 Synchronizing the Analyzer and a Controller ...
Page 36: ...3 1 3 Passing Control ...
Page 39: ...4 1 4 Data Types and Encoding ...
Page 46: ...5 1 5 Using Status Registers ...
Page 71: ...6 1 6 Trace Data Transfers ...
Page 98: ...6 28 Programmer sGuide Trace Data Transfers Internal Measurement Arrays ...
Page 99: ...7 1 7 Using Graphics ...
Page 105: ...8 1 8 Front Panel Keycodes ...
Page 111: ...9 1 9 Introduction to SCPI ...
Page 129: ...10 1 10 Menu Map with SCPI Commands ...
Page 268: ...12 1 12 SCPI Conformance Information ...
Page 290: ...13 1 13 SCPI Error Messages ...