HP-IB STATUS Indicators

When the analyzer is connected to other instruments over HP-IB, the HP-IB STATUS indicators in the instrument state function block light up to display the current status of the analyzer.

R = remote operation L = listen mode

T = talk mode

S = service request (SRQ) asserted by the analyzer

System Controller Mode

me ~~~~~~~~~~~~~: softkey activates the system controller mode. men in this mode,

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the analyzer can use HP-IB to control compatible peripherals, without the use of an external computer. It can output measurement results directly to a compatible printer or plotter, store instrtmrent states using a compatible disk drive, or control a power meter for performing service routines. The power meter calibration function requires system controller or pass control mode.

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The ~~~~~~~~~~: softkey activates the talker/listener mode, which is the mode of operation most often used. In this mode, a computer controller communicates with the analyzer and other compatible peripherals over the bus. The computer sends commands or instructions to and receives data from the analyzer. All of the capabilities available from the analyzer front panel can be used in this remote operation mode, except for control of the power line switch and some internal tests.

Pass Control Mode

 

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softkey activates the third mode of HP-IB operation: the pass control

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mode. In an automated system with a computer controller, the controller can pass control of the bus to the analyzer on request from the analyzer. The analyzer is then the controller of the peripherals, and can direct them to plot, print, or store without going through the computer. When the peripheral operation is complete, control is passed back to the computer. Only one controller can be active at a time. The computer remains the system controller, and can regain control at any time.

Preset does not affect the selected controller mode, but cycling the power returns the analyzer to talker/listener mode.

Information on compatible peripherals is provided in Chapter 11, “Compatible Peripherals. n

Address Menu

ms menu citn be accessed by pressing the :~~:~~~~~.~ softkey within the HP-IB menu.

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In communications through the Hewlett-Packard Interface Bus (HP-IB), each instrument on the bus is identified by an HP-IB address. This decimal-based address code must be different for each instrument on the bus

This menu lets you set the HP-IB address of the analyzer, and enter the addresses of peripheral devices so that the analyzer can communicate with them.

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