HP 53150A Series Programming Manual page 57

Chapter 3 Programming Your Counter for Remote Operation
Elements of SCPI Commands
Parameter Separator
If you send more than one parameter with a single command, you must
separate adjacent parameters with a comma.
Query Parameters
All selectable <numeric value> parameters (except Common Commands)
can be queried to return the minimum, maximum, and DEFault values
they are capable of being set to by sending a MINimum, MAXimum, or
DEFault parameter after the "?." For example, consider the
AVERage:COUNt? query.
If you send the query without specifying a parameter (AVER:COUN?), the
present setting is returned. If you send the MIN parameter (using
AVER:COUN? MIN), the command returns the minimum acceptable
count. If you send the MAX parameter, the command returns the
maximum level currently available. Be sure to place a space between the
question mark and the parameter.
Suffixes
A suffix is the combination of suffix elements and multipliers that can be
used to interpret some <numeric value>. If a suffix is not specified, the
Counter assumes that <numeric value> is unscaled (that is, Volts,
seconds, etc.)
For example, the following two commands are equivalent:
OUTPUT 703;"FREQ:RES 1KHz"
OUTPUT 703;"FREQ:RES 1E+3"
Suffix Elements
Suffix elements, such as HZ (Hertz), S (seconds), V (volts),
OHM (Ohms), PCT (percent), and DEG (degrees) are allowed within this
format.
Programming Guide 3-17