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Chapter 3, Operating Overview
Passing Instrument Control
Pass Control Examples
The following examples illustrate how pass control could be implemented in two
of the common Test Set operating configurations:
1. Test Set controlled by an external controller, and
2. Test Set running an IBASIC program with an external Controller connected to HP-IB
bus.
Passing Control While the Test Set is Controlled by an External Controller
This example illustrates passing control between the Test Set and an external
controller while the Test Set is being controlled by the external controller. In this
mode the Test Set is NOT configured as the System Controller. Generally
speaking, in this mode of operation the Test Set is considered just another device
on the HP-IB bus and its Controller capabilities are not used. However, it may be
desirable, under certain conditions, to print a Test Set screen to the HP-IB printer
for documentation or program debugging purposes. With manual intervention it is
possible to have the Active Controller pass control to the Test Set, have the
operator select and print the desired screen, and then pass control back to the
formerly Active Controller. The following steps outline a procedure for
accomplishing this task.
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