B&K Precision 5491B - Manual - Manual (Page 44)

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 Brackets [ ]: Some command words are enclosed in brackets. These brackets are used to denote
an optional command word that does not need to be included in the program message. For
example:
:RANGe[:UPPer]
These brackets indicate that :UPPer is optional and does not have to be used. Thus, the above
command can be sent in one of the two ways below:
:RANGe
or :RANGe:UPPer
NOTICE: When using optional command words in your program, do not include the
brackets.
 Angle brackets <>: Angle brackets are used to denote a parameter type. Do not include the
brackets in the program message. For example:
:HOLD:STATe
The indicates that a Boolean-type parameter is required. Thus, to enable the HOLD feature,
you must send the command with ON or 1 parameter as below:
:HOLD:STATe ON
or :HOLD:STATe 1
 Parameter types: The following are some of the common parameter types:
Boolean: Used to enable or disable an instrument operation. 0 or OFF disables the
operation and 1 or ON enables the operation. Example:
:CURRent:AC:RANGe:AUTO ON Enables auto ranging
Name parameter: Select a parameter name from a listed group. Example:
= MOVing
REPeat
:RESistance:AVERage:TCONtrol MOVing
Numeric Representation format: This parameter is a number that can be expressed as
an integer (e.g., 6), a real number (e.g., 25.3) or an exponent (e.g., 5.6E2). Example:
:MMFactor 5