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8-12 HP IBASIC Supplement

Interfacing with External Devices

General Bus Management

Host Instrument

The TRIGGER statement is supported by the analyzer. Issuing a TRIGGER

command will initiate a single sweep assuming the analyzer is in

TRIGGER hold mode. TRIGGER is ignored if not in hold mode.

CLEAR

The CLEAR statement provides a means of “initializing” a device to its

predeﬁned device-dependent state. When the CLEAR statement is

executed, the Clear message is sent either to all devices or to the

speciﬁed device, depending on the information contained within the

device selector. If only the interface select code is speciﬁed, all devices on

the speciﬁed GPIB interface are cleared. If primary-address information

is speciﬁed, the Clear message is sent only to the speciﬁed device. Only

the active controller can send the Clear message.

Host Instrument

The CLEAR statement is fully compatible on the internal interface.

ABORT

This statement may be used to terminate all activity on the external bus

and return the GPIB interfaces of all devices to reset (or power-on)

condition. Whether this affects other modes of the device depends on the

device itself. The IBASIC program must be either the active or the

system controller to perform this function. If it is the system controller

and has passed active control to another device, executing this statement

causes active control to be returned. Only the interface select code may

be speciﬁed; primary-addressing information (such as 724) must not be

included.

Aborting the Internal Bus

ABORT is not supported for select code 8. Executing ABORT 8 will not

generate an error.

Agilent Technologies 8712ET User's Handbook Supplement

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