Agilent Technologies 8935 Series Manual do Utilizador descarregar pdf (Página 24)

24 Chapter 1

O:\Manuals\E6380A_Progguid\Book\Usehpib.fm

Using HP-IB

Overview of the Test Set

Internal Automatic Control Mode

In Internal Automatic Control mode the Test Set’s operation is

controlled by an application program running on the built-in IBASIC

controller. The built-in controller runs programs written in Agilent

Technologies Instrument BASIC (IBASIC), a subset of the BASIC

programming language used on the HP



9000 Series 200/300 System

Controllers. IBASIC is the only programming language supported on

the built-in IBASIC controller.

Similarities Between the Test Set’s IBASIC Controller and

Other Single-Tasking Controllers

The architecture of the IBASIC controller is similar to that of other

single-tasking instrumentation controllers. Only one program can be

run on the IBASIC controller at any given time. The program is loaded

into RAM from some type of mass storage device. Four types of mass

storage devices are available to the Test Set: SRAM PC cards, ROM

memory cards connected to the HP-IB interface, and internal ROM and

RAM. Three types of interfaces are available for connecting to external

instruments and equipment: HP-IB, RS-232, and 16-bit parallel.

Figure 1-2 on page 29 shows how information is routed inside the Test

Set when it is in Internal Automatic Control mode. In Manual Control

mode certain Test Set resources are dedicated to manual operation.

These resources are switched to the IBASIC controller when an IBASIC

program is running. These include the serial interface ports at select

codes 9, 10, and 11, the HP-IB interface at select code 7, the parallel

printer interface ports at select codes 15 and 16, and the display. In

Manual Control mode, front panel information (instrument settings,

measurement results, data input from the DUT) is routed to the display

through the screen control hardware. In Internal Automatic Control

mode the measurement results and data input from the DUT are routed

to the IBASIC controller through a dedicated HP-IB interface. Also, in

Internal Automatic Control mode, the display is dedicated to the

IBASIC controller for program and graphics display. This means

instrument front panels cannot be displayed on the display when an

IBASIC program is running.

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Agilent Technologies 8935 Series Manual do Utilizador Página 24