Agilent Technologies ESA-E Series Programmer's Manual page 20

Programming Fundamentals
Parameters in Commands
Include the key word MINimum or MAXimum after the question mark
in a query in order to return the numeric value of the key word.
Example query: [:SENSE]:FREQuency:CENTer? MAXimum
Variable Parameters
<freq>
A frequency parameter is a positive rational number followed by
optional units. The default unit is Hz. Acceptable units include: Hz,
kHz, MHz, GHz.
<time>
A time parameter is a rational number followed by optional units. The
default units are seconds. Acceptable units include: S, MS, US.
<ampl>, <rel_ampl>
The <ampl> (amplitude) parameter and the <rel_ampl> (relative
amplitude) parameter consist of a rational number followed by optional
units. Acceptable units include: V, mV, µV, dBm, dBmV, dBµV, Watts,
W.
<angle>
An angle parameter is a rational number followed by optional units.
The default units are degrees. Acceptable units include: DEG, RAD.
<integer>
There are no units associated with an integer parameter.
<percent>
A percent parameter is a rational number between 0 and 100, with no
units.
<string>
A string parameter includes a series of alpha numeric characters.
Block Program Data
Definite length arbitrary block response data is defined in section
8.7.9.2 of IEEE Standard 488.2-1992, IEEE Standard Codes, Formats,
Protocols and Common Commands for Use with ANSI/IEEE Std
488.1-1987. New York, NY, 1992.
<definite_length_block>
It allows data to be transmitted over the system interface as a series of
8 bit data bytes. This element is particularly useful for sending large
quantities of data, 8 bit extended ASCII codes, or other data that are
not able to be directly displayed.
Chapter 1 1-7