HP 8753E Programming And Command Reference Manual page 41

ASCII floating-point format. The data is transmitted
as ASCII numbers, as described previously in "Output
Syntax". There is no header. The analyzer always
uses FORM4 to transfer data that is not related to
array transfers (i.e. marker responses and instrument
settings).
PC-DOS 32-bit floating-point format with 4
bytes-per-number, 8 bytes-per-data point. The data is
preceded by the same header as in FORMl. The byte
order is reversed to comply with PC-DOS formats. If
you are using a PC-based controller, FORM5 is the
most effective format to use.
The analyzer terminates each transmission by asserting the EOI interface
line with the last byte transmitted. Table l-5 offers a comparative
overview of the five array-data formats.
Format
Data Value
Data
FORM 1 Internal
Binary
FORM 2 IEEE 32.bit
Floating-Point
FORM 3 IEEE 64-bit
Floating-Point
FORM 4 ASCII
Numbers
FORM 6 PC-DOS 32-bit
Floating-Point
No header is used in FORM 4.
HP-IB Programming and Command Reference Guide
Bytes per
Bytes per point
2 data values
6
4 8
8 16
24
4 8
(201 pts) Total Bytes
Bytes per trace with header
1206 1210
1608 1612
3216 3220
10,060
10,060'
1608 1612