Defining A Scan List - Racal Instruments 1256 Manual

Publication No. 980855 Rev. A

Defining a Scan List

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number of channels to scan through.
G) Program the DMM to select the number of readings to store.
H) Send the command TRIGGER:IMMEDIATE to the 1256 to
initiate the Scan operation.
I) Repeatedly query the DMM to wait until the measurements
have completed.
J) Read the measurements from the DMM.
The commands used to program the DMM (or other instrument)
depend on the instrument being used. Consult the user
documentation of the instrument for a description of how to
perform steps (D), (E), (G), (J), and (K) above.
The remainder of this section describes how to define a scan list,
select input and output trigger sources, and so on.
A Scan List may be defined using the SCAN command. The syntax
for the SCAN command is shown below:
[:ROUTe]
:SCAN <scan list>
:DELete
:SCAN?
The <scan list> is the same as a <channel list> used with the
CLOSE, OPEN, and PATH commands, but with one addition:
special keywords may be used to indicate that all channels
controlled by the 1256 are placed in the state as recalled from
nonvolatile memory.
In short, the <scan list> is comprised of:
A) Individual channel designators. Examples:
3(0)
6(37)
1(323)
B) A list of single channels, separated by commas:
3(0,2,4,6)
7(9,2,1,10)
C) A range of relays, separated by a colon:
3(1:8)
7(10:2)
D) A path name:
Path1
Thispath
E) A state name. State names begin with the letters "STATE",
1256 User Manual
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Advanced SCPI Operations 8-15