User manual

IEEE-488 Reference
2001-900-01 Rev. K / August 2010 4-101
Description This command is used to select and perform the desired scan operation. When INTernal is selected, the
Model 2001 will scan the channels of the internal switching card according to how the scan is configured
(see :ROUTe:SCAN[:INTernal]). EXTernal is used to measure channels that are controlled by an external
switch system. When EXTernal is selected, the Model 2001 will scan the external scan list (see
:SCAN:EXTernal).
With RATio or DELTa selected, the Model 2001 will perform the appropriate math calculation using the
specified reference channel and measure channel (see :RCHannel and :MCHannel). Note that in order to
select RATio, the advanced filter must be disabled. See paragraph 4.19.12 for details on controlling the
advanced filter.
The NONE selection disables all operations associated with a scan.
Programming example 10 OUTPUT 716; “:syst:pres”
20 OUTPUT 716; “:init:cont off”
30 OUTPUT 716; “:arm:seq:lay2:coun 5”
40 OUTPUT 716; “:trig:coun 10”
50 OUTPUT 716; “:rout:scan:lsel int”
60 END
Line 10 Sets Model 2001 to :SYSTem:PRESet defaults.
Line 20 Disables continuous initiation.
Line 30 Sets scan count to five.
Line 40 Sets measure count to 10.
Line 50 Selects and starts an internal scan. The 10 channel scan list will be scanned five times.Sense
subsystems
4.19 Sense subsystems
The Sense subsystems are used to configure and control the measurement functions (Sense 1) and to read
the digital input port (Sense 2). The commands for the Sense subsystems are summarized in Table 4-12.
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SENSe command summary
Command Description Paragraph
[:SENSe[1]]
:ALTernate[1]
:SAVE
:RECall
:FUNCtion <name>
:FUNCtion?
:DATA
[:LATest]?
:FRESh?
Path to control an Alternate setup.
Save current setup as Alternate setup.
Return instrument to Alternate setup.
Select measurement function: ‘VOLTage:AC’, ‘VOLTage:DC’,
‘RESistance’, ‘FRESistance’, ‘CURRent:AC’, ‘CURRent:DC’ ,
‘FREQuency’, ‘TEMPerature’
Query function.
Path to select reading type:
Query the latest reading.
Query a fresh reading.
4.19.1
4.19.2
4.19.3
4.19.4