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Analog Input Operation Mode
Analog-to-Digital (A/D) conversion converts analog voltage into digital
information, which enables the computer to process or to store the signals. Before
using an A/D converter, you should define the properties of the measured signals,
which are the range, polarity (Unipolar/Bipolar) and signal type. You can also set
the desired channels.
The A/D acquisition requires a trigger source. Once the trigger condition is
matched, only then the data acquisition begins. The measured signal is buffered in
a data FIFO. buffer. The analog inputs are able to provide input voltages between
±1.25 V to ±10 V (16-bit ADC), except for U2331A with ±0.05 V to ±10 V (12-bit
ADC). The following diagram illustrates the functional block diagram of the
U2300A series DAQ device.
According to the functional block diagram, when the U2300A series DAQ device is
switched on, the calibration constants is loaded from the on-board EEPROM to
ensure both the Calibration DACs and PGA circuit are functioning correctly. Users
are required to set the input configuration in the Scan List, trigger source, and
trigger mode using SCPI commands. The DAQ will start with different scan data
acquisition timings, and when the trigger condition is matched, a trigger event
will take place. The data will be transferred to the system memory using suitable
data transfer mode. The input signal types are single-ended and differential.
Keysight U2300A Series User's Guide
Features and Functions
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