Keithley 2001 Operator's Manual page 190

IEEE-488 Reference
4-32
:TRACe:FEED:CONTrol
<NRf>
number that can be expressed as an integer (e.g., 8), a real number (e.g., 23.6) or an expo-
nent (2.3E6). Example:
:SYSTem:KEY 16
<n>
of an NRf number or one of the following name parameters; DEFault, MINimum or MAX-
imum. When the DEFault parameter is used, the instrument will be programmed to the
*RST default value. When the MINimum parameter is used, the instrument will be pro-
grammed to the lowest allowable value. When the MAXimum parameter is used, the instru-
ment will be programmed to the largest allowable value. Examples:
:TRIGger:TIMer 0.1
:TRIGger:TIMer DEFault
:TRIGger:TIMer MINimum
:TRIGger:TIMer MAXimum
Angle brackets < >: In this manual, angle brackets (<>) are used to denote parameter type.
Do not include the brackets in the program message. For example:
:SOURce:TTL2 <b>
The <b> indicates that a Boolean type parameter is required. Thus, to set digital input line
#2 true, you must send the command with the ON or 1 parameter as follows:
:SOURce:TTL2 ON or :SOURce:TTL2 1
2. 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 commands have a query form. Examples:
*OPT?
:TRIGger:TIMer?
Most commands that require a numeric parameter (<n>) can also use the DEFault, MINi-
mum, and MAXimum parameters for the query form. These query forms are used to deter-
mine the *RST default value, and the upper and lower limits for the fundamental command.
Examples:
:TRIGger:TIMer? DEFault
:TRIGger:TIMer? MINimum
:TRIGger:TIMer? MAXimum
3. Case sensitivity: Common commands and SCPI commands are not case sensitive. You can
use upper or lower case, and any case combination. Examples:
*RST
:SCAN?
:SYSTem:PRESet
PRETrigger
Numeric representation format: This parameter is a
"Press" NEXT key from over the bus.
Numeric value: A numeric value parameter can consist
Sets timer to 100msec.
Sets timer to 1sec.
Sets timer to 1msec.
Sets timer to 999999.999sec.
Common query command.
SCPI query command.
Queries the *RST default value.
Queries the lowest allowable value.
Queries the largest allowable value.
= *rst
= :scan?
= :system:preset
2001-900-01 Rev. J / October 2009