Series 2600 System SourceMeters Reference Manual
Instrument Control Library 12-5
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2600S-901-01 Rev. A / May 2006
TSP-Link nodes
Each instrument or enclosure attached to the TSP-Link bus must be uniquely
identified. This identification is called a TSP-Link node number and the enclosures
are called nodes. Each node must be assigned a unique node number.
From a TSP point of view, nodes look like tables. There is one global table named
node
that contains all the actual nodes that are themselves tables. An individual
node is accessed as
node[N]
where
N
is the node number assigned to the node.
Each node has certain attributes that can be accessed as elements of its
associated table. These are listed as follows:
id
The node number assigned to the node.
model
The product model number string of the node.
revision
The product revision string of the node.
serialno
The product serial number string of the node.
There is also an entry for each logical instrument on the node (see “
”).
It is not necessary to know the node number of the node running a script. The
variable
localnode
is an alias for the node entry the script is running on. For
example, if a script is running on node 5, the global variable
localnode
will be an
alias for
node[5]
.
Logical instruments
You would normally refer to all instrumentation within one enclosure or node as a
single instrument. From an TSP/ICL point of view, it is useful to think of individual
SMUs as instruments. To avoid confusion, SMUs and other subdivisions of the
instrumentation within an enclosure will be referred to as “logical instruments.”
Each logical instrument is given a unique identifier in a system. These identifiers
are used as part of all ICL function calls that control a given logical instrument. A
Series 2600 SMU has the following logical instruments per enclosure:
beeper
errorqueue
smua
status
digio
gpib
smub
tsplink
display
serial
timer
Logical instruments also look like TSP tables. In addition to the logical-instrument-
specific attributes and the commands to which they respond, there are a few
attributes that provide information about the logical instrument. These attributes
are listed below:
name
A string that represents the logical instrument’s name. For example,
smua
.
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