User manual

• Parameter types: The following are some of the more common parameter types:
<b> Boolean: Used to enable or disable an instrument operation. 0 or OFF dis-
ables the operation, and 1 or ON enables the operation. Example:
:CURRent:AC:RANGe:AUTO ON Enable auto ranging
<name> Name parameter: Select a parameter name from a listed group. Example:
<name> = NEVer
= NEXt
:TRACe:FEED:CONTrol NEXt
<NRf> Numeric representation format: This parameter is a number that can be
expressed as an integer (e.g., 8) a real number (e.g., 23.6) or an exponent
(2.3E6). Example:
:SYSTem:KEY 16 Press TEMP key from over the bus
<n> Numeric value: A numeric value parameter can consist of an NRf number
or one of the following name parameters: DEFault, MINimum, MAXimum.
When the DEFault parameter is used, the instrument is programmed to
the *RST default value. When the MINimum parameter is used, the instru
-
ment is programmed to the lowest allowable value. When the MAXimum
parameter is used, the instrument is programmed to the largest allowable
value. Examples:
:TRIGger:TIMer 0.1 Sets timer to 100 msec.
:TRIGger:TIMer DEFault Sets timer to 0.1 sec.
:TRIGger:TIMer MINimum Sets timer to 1 msec.
:TRIGger:TIMer MAXimum Sets timer to 999999.999 sec.
<list> List: Specify one or more switching channels. Examples:
:ROUTe:SCAN (@1:10) Specify scan list (1-10).
:ROUTe:SCAN (@2,4,6) Specify scan list (2, 4, and 6).
• Angle Brackets < >: Angle brackets (< >) are used to denote a parameter type. Do
not include the brackets in the program message. For example:
:HOLD:STATe <b>
The <b> indicates that a Boolean-type parameter is required. Thus, to enable the
Hold feature, you must send the command with the ON or 1 parameter as follows.
:HOLD:STATe ON or 1
Query commands
This type of command requests (queries) the currently programmed status. It is identified
by the question mark (?) at the end of the fundamental form of the command. Most com
-
mands have a query form, Example:
:TRIGger:TIMer? Queries the timer interval.
2000-900 (J - Aug 2010) BOOK.fm Page 33 Wednesday, October 12, 2011 12:29 PM