Source: Arbiter Systems, Inc.
The Model 1133A Power Sentinel consists of several blocks.
Arbiter Systems, Inc.133A Power Sentinel consists of several blocks. They are GPS receiver and synchronization, voltage and current inputs, programmable-gain amplifiers, multiplexers, analog-to-digital converter, digital signal processor, host processor, display and keyboard, I/O functions and power supply.
It uses two processors to handle the many tasks that the instrument performs each second. A TI TMS320C32 floating-point DSP unit performs the digital signal analysis tasks. The I/O functions and interface to the "real world" are handled by a ST 10F167 16-bit microcontroller.
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