HP 8924C - Page 96

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S:\HP8924C\USRGUIDE\BOOK\chapters\opoverv.fb
Chapter 3, Operating Overview
Passing Instrument Control
When Active Controller Capability is Required
The Test Set must be the Active Controller on the bus under the following
conditions:
1. whenever the Test Set needs to control any device connected to the HP-IB bus, such as
an external disk drive, an external printer, or an external instrument
2. whenever a screen image is printed to an external HP-IB printer
3.
whenever an instrument configuration is saved or recalled from an external HP-IB disk
drive
4.
whenever running any HP 11807 Radio Test Software package which uses an external
HP-IB device such as a disk drive, a printer, or an instrument
5.
whenever running any IBASIC program which uses an external HP-IB device such as
a disk drive, a printer, or an instrument
Passing Control Back to Another Controller
The Test Set has two methods of passing control back to another controller: 1)
automatically and 2) using the IBASIC PASS CONTROL command from an
IBASIC program. The two methods are described in the following sections.