IEEE-488 Reference
4-105
Description
This command is used to select and perform the desired scan operation. When INTernal is se-
lected, 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 4.19.11
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.
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