Keysight 53210A, User Manual

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7 Formats and Data Flow
192 Keysight 53210A User’s Guide
Reading Formats and Data Flow
A (counter) data format is specified when a particular format (ASCII, REAL) is
required. The data is converted to that format when sent to the output buffer
directly, or when transferred from reading memory.
The command used to set the data format is:
FORMat[:DATA] {ASCII|REAL}[,<length>]
FORMat[:DATA]? (query form)
The formats (and lengths) are described in Table 7-1 .
Format
ASCII
is set following an instrument reset (
*RST
) or front panel preset
( PRESet ). A line feed (LF) and End-Or-Identify (EOI) follow the last reading in both
formats.
Table 7-1 Counter Data Formats
Type Representation Length
ASCII +4.57538162006 15 (digits)
REAL definite length or indefinite length arbitrary block format 64 (bits)
Format ASCII are ASCII characters. Each reading is comma-separated. The instrument always returns
15 significant digits .
Format REAL is IEEE 754 binary data ( 64-bit ). The data may be transferred in IEEE 488.2
indefinite-length or definite-length block format. Byte order is controlled by the FORMat:BORDer
command.
Indefinite-Length Block: # 0 < 8-bit data bytes > NL ^END
(using MEASure?, READ?, FETCh?)
Definite-Length Block: # <non-zero digit> <block length> <8-bit data bytes>
(using R?, DATA:REMove?)
<non-zero digit> indicates the number of digits representing <block length>. <block length> indicates
the number of 8-bit data bytes which follow.