Data Translation DT9824, User Manual, Page: 14 / 102

Chapter 1
14
Features
The DT9824, shown in Figure 1 , is a high-resolution (24-bit) data acquisition module for the
Universal Serial Bus (USB).
Figure 1: DT9824 Module
Most computers have two or more USB ports that allow direct connection to USB devices. You
can expand the number of USB devices attached to a single USB port by using expansion
hubs. The DT9824 module is part of the high-power, bus-powered USB class; therefore, the
module does not require external power, but the expansion hubs do require external power.
The DT9824 module resides outside of the PC and install with a single cable to ease
installation. Modules can be “hot swapped,” or plugged and unplugged while the PC is on,
making them useful for many data acquisition applications.
The DT9824 module provides the following major features:
• USB compatibility
• ISO-Channel™ protection eliminates noise and ground loops
−
±500 V galvanic isolation channel-to-channel for all analog input signals and to the
host computer to protect signal integrity
• Four, simultaneous, 24-bit analog input channels
• Sampling frequency of up to 4800 Hz
• Input gains of 1, 8, 16, and 32 with an input range of ±10 V to support the following
effective ranges: ±10 V, ±1.25 V, ±0.625 V, and ±0.3125 V
• Continuously paced analog input operations
• Software-programmable trigger type (software or external digital trigger) to start analog
input operations.