Front Panel Operations; Measurement Configuration; Set Adc (Auto Zero) - Picotest M3500A User Manual

4

Front Panel Operations

This chapter contains information about how to change the parameters
and settings for your measurements and all the details about each
feature and function.

4.1 Measurement Configuration

The following information will guide you through ways to configure
measurement functions. It provides you the flexibility to change any
parameter in any measurement function when needed, including ADC
setting, filter, resolution setting (digits), DC input resistance, threshold
resistance (continuity), range (manual & auto), rate (integration time),
sensor type for temperature measurements, remote interface selection
and input terminal switch.

4.1.1 Set ADC (Auto Zero)

Zero
The purpose of Auto Zero function is used for minimizing the offset
influence on your measurements. When Auto Zero is enabled, M3500A
takes the input signal reading as a base value and then internally
disconnects the input signal, and takes an offset reading (a null offset).
It then subtracts the offset from the base to get an accurate
measurement.
Displayed reading = Base value (input signal) – Offset value
When the Auto Zero is enabled the meter takes an offset reading for each
subsequent measurement. However, when Auto Zero is disabled, the
meter only takes one offset reading each time when you change the
function settings.
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