Keysight Technologies 3458A Guide D'utilisation page 308

6 Command Reference
– When using the ASCII format, 2 additional bytes are required for the
– The multimeter indicates an overload condition (input greater than the present
– When reading memory is disabled, executing the SSAC or SSDC command
– The output format applies only to readings transferred over the GPIB bus.
– When using the SINT or DINT output formats, the multimeter applies a scale
– You should not use the SINT or DINT output or memory format for frequency or
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use the END command to indicate the end of the transmission using the GPIB
EOI function. Refer to the
carriage-return, line-feed (cr,lf) end of line sequence. The cr,lf is used only for
the ASCII format and normally follows each reading output in ASCII format.
However, when using the ASCII output format and multiple readings are
recalled from reading memory using the RMEM command, the multimeter
places a comma between readings (comma = 1 byte). In this case, the cr,lf
occurs only once, following the last reading in the group being recalled.
Commas are not used when readings are output directly to the bus (reading
memory disabled), when readings are recalled using "implied read," or when
using any other output format.
range can measure) by outputting the largest number possible for the
particular output format as follows.
SINT format: +32767 or -32768 (unscaled)
DINT format: +2.147483647E+9 or -2.147483648E+9 (unscaled)
ASCII, SREAL, DREAL: +/-1.OE+38
(sub-sampling) automatically sets the output format to SINT regardless of the
previously specified format. You must use the SINT output format when
sub-sampling and not using reading memory.
Responses to query commands are always output in ASCII format regardless of
the specified output format. Following the query response, the output format
returns to the specified type. The output format does not affect the memory
format specified by the MFORMAT command.
factor to each reading. This scale factor is based on the present measurement
function, range, A/D setting, and enabled math operations. Therefore, ensure
that the multimeter's configuration is the same when retrieving the scale
factor (ISCALE? command) as it was when the readings were made.
period measurements when a real-time or post-process math function is
enabled (except STAT or PFAIL) or when autorange is enabled.
END command for more information.
Keysight 3458A User's Guide