Agilent Technologies N3970A Spezifikationen PDF herunterladen (Seite 16)

N3970A UM-1

■ AUTOTEST OPERAT I O N

General Autotest features

For Autotest to function, all instruments involved in the test

must be Agilent Handheld instruments with an Autotest

function.

The Autotest feature performs automated measurement (and

automatic λ detection) by data exchange between instruments,

and requires minimal operator knowledge: turn the instrument

on, connect a test lead, and select AUTOTEST on the source.

Subsequent operation is automated, although some choices can

be made for convenience.

Functionality is determined by the options fitted to the

instrument(s) used. Autotest configures itself according to the

options available, and carries out the most comprehensive test

possible.

Autotest remains synchronised for about 8 seconds, which

enables the user to change optical connections without

re-starting Autotest each time.

A light source transmits Autotest signals at one or two

wavelengths to an appropriate power meter.

Operation

Turn on the source and meter, and connect them with a test lead.

On the light source, push AUTOTEST.

This is all that is required to start Autotest operation on the

power meter.

The meter will automatically set to the correct λ and display

absolute power in dBm. The display will alternate between

wavelengths. To display only one λ at a time, push +/-.

You may also select AUTOTEST on the meter, which forces the

meter into Autotest mode, with faster synchronisation in this

mode (the source must be in Autotest mode). Push MENU to

exit.

The source power transmitted from the source is displayed on

the left hand side of the display.

Push ABS/REL to make the meter display relative power.

The stored reference value(s) are displayed on the left hand side

of the display.

To take a reference under Autotest, connect the source and

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Agilent Technologies N3970A Spezifikationen Seite 16