Coherent FieldMaxII-TOP Manual do Utilizador descarregar pdf (Página 65)

Operation

Manual ranging requires the range to be selected by the

user. For more information, refer to “Up and Down

Arrows” on page 40.

Zeroing

Thermopile and optical sensors require periodic zeroing.

Zeroing occurs when a meter attempts to null out any

signal coming from the sensor and establish a zero-

power baseline. If Auto Ranging is active, the sensor is

zeroed for every available range. If Auto Ranging is not

active, the sensor is zeroed at the current range only.

Under typical operating conditions, the zero procedure

takes about one second for each range.

When starting the zeroing procedure, the large numerals

on the LCD are replaced by an animated set of dashes.

Unless there is an error, the normal measurement mode

resumes once the zeroing procedure ends.

Figure 16. Auto Ranging

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Coherent FieldMaxII-TOP Manual do Utilizador Página 65