Agilent Technologies 4294A Instruction Manual download pdf (Page 40)

32 Chapter 2

Learning Operation Basics

Preparing for a Measurement

Turn ON the Power

Press the power switch to turn on the power to the Agilent 4294A.

The Agilent 4294A performs a power-on self-test. During the self-test, the model name,

firmware revision number/date, options, copyright notice, and other information appear on

the LCD. When the self-test is completed, the measurement screen appears on the LCD.

Set the Adapter Type to “NONE”

Use the keystroke sequence [Cal] - ADAPTER [ ] - NONE to configure the Agilent 4294A

to operate without an adapter.

This option must be selected when the Agilent 4294A is connected to a direct-coupling

type test fixture such as the Agilent 16047E. With the adapter type set to “NONE,” the

Instrument Status area on the measurement screen does not display the “EX1,” “EX2,”

“7mm,” and “PRB” indicators.

NOTE When you use the Agilent 4294A for actual applications, you may want to use an adapter

such as a 7-mm conversion adapter (terminal adapter), cable, or probe. To do so, you must

specify the appropriate adapter type and then perform a calibration procedure called

“Adapter Setup,” in which you calibrate the Agilent 4294A for the connected adapter by

measuring a specific calibration standard. However, because this example uses the Agilent

16047E, which is a direct-coupling fixture that does not require an adapter, you need not

perform the “Adapter Setup” procedure in this tour.

For the Agilent 4294A to perform measurement, you must select the appropriate

adapter type option. Whenever you start a new measurement session, you should

check the indicator (“EX1,” “EX2,” “7mm,” “PRB,” or blank) shown in the

Instrument Status area to confirm that the correct adapter type is selected. Do not

forget to check the adapter type, particularly if you frequently reconnect the Agilent

4294A to a number of alternative adapters (including a 7-mm conversion adapter,

probe, cable, test fixture, and so on).

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Agilent Technologies 4294A Instruction Manual Page 40