Agilent Technologies L4400 manual Analog Bus Applications, Porting Applications, Usage

Operating and Programming 3

Because of the similarity in products, code and applications can be leveraged and ported between an L4400 instrument and its 34980A module counterpart.

Porting Applications

The programming examples on the L4400 Product Reference CD- ROM as well as all application programs contain a function that opens a “session” to, and initializes the instrument.

In addition to specifying the instrument’s address string, this initialization function contains parmeters that query and reset the instrument when the session is opened. These parameters are represented by true/false conditions that either perform an ID query or reset (true) or do not (false).

By setting the ID query parameter of the (session) initialization function to ‘False’, the program can be ported between corresponding (L4400 and 34980A) instruments.

For example, in the IVI- COM programming example MultfunctionExample.csproj, the instrument session is opened using the function:

ID query

address string

host.Initialize("GPIB::9", false, true, standardInitOptions + "," + driverSetupOptions);

reset

By setting the ID query parameter to ‘false’ as shown and changing the address string as required, the example can be run using the L4452A multifunction module or the 34952A multifunction module. Note that channel addresses within the program must be changed accordingly. See “L4400 Series Channel Addressing Scheme” for more information.

Modifying each of the programming examples on the L4400 Product Reference CD- ROM in this manner allows the examples to be used by the L4400 instruments and their 34980A counterparts.

Analog Bus Applications

Usage:

•L4421A 40- Channel Armature Multiplexer

•L4433A Dual/Quad 4x8 Reed Matrix

This section provides important environmental and electrical considerations that can affect analog bus usage on the L4421A and L4433A.

L4400 User’s Guide 65