Rigol M300 Uživatelský manuál stáhnout pdf (Strana 54)

RIGOL

User’s Guide for DM3000 Series

2-6

Null Measurement

The DM3000 null settings is available for DC voltage, AC voltage, DC current, AC

current, resistance, frequency/period, and capacitance measurements.

With null setting each measurement is the difference between a stored null value

and input signal. It is particularly important prior for making capacitance

measurements. The formula used for calculating null measurements is:

Result = reading - null value

The null value is adjustable, and can be set to any value between 0 and ±120% of

the highest range, for the present function.

Press  Null, the display shows:

Figure 2- 4 Set the NULL Value

Table 2- 5 Menu Description

Function Menu

Description

Current

Use the measured value as the null value.

Clear

Set the value to be zero.

On/Off

Turn the Null function on or off.

Save all changes, back to a higher level menu.

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Rigol M300 Uživatelský manuál Strana 54