Coherent FieldMaxII-TOP Uživatelský manuál stáhnout pdf (Strana 51)

Operation

Here’s an example of how to determine the attenuation

correction factor that needs to be set in the FieldMaxII-

TOP meter: If a 1 W laser beam is focused through an

attenuator that has an attenuation factor of 50%, then, to

get a true laser measurement value, the correction factor

in the FieldMaxII-TOP instrument needs to be set to 2. In

other words, since only half the power of the beam is

transmitted through the attenuator, the measured result

must be doubled to obtain a true laser measurement.

The Atten button is used to initiate several activities:

• Toggle the state of Attenuation Correction mode, if

the button is pressed for less than one second.

• Enter Edit mode and select the attenuation factor, if

Setup/Local is pressed beforehand.

• View the attenuation factor, if the button is pressed

for one second or more.

Trig

After pressing the Setup/Local button, the Trig button is

used to enter Edit mode and select the trigger level

parameter that will be edited. If an edit cycle has not been

initiated, pressing the Trig button will display the trigger

level parameter. Trigger has a range of 2 to 20% of full

scale. Refer to “Internal Triggering Mode” on page 48

for details of the trigger function

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Coherent FieldMaxII-TOP Uživatelský manuál Strana 51