HVTest HT-802, Руководство пользователя

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Chapter 2 Hardware structure
Section 1 hardware components
1. Built-in high-performance industrial control computer
This device uses high - performance IPC control computer, with self- restore the CF card,
8.4 " 800 × 600 resolution TFT color LCD. This machine with special high-performance
industrial keyboard and mouse can directly use no need connect other instruments, software
running under Windows XP operating system, easy to operate. There are 3 USB interface on
the panel, convenient to save and review data, data communicate and software update.
2. DSP digital signal processing system
Take 6000 Series DSP controller as the core, EPGA programmable logic devices output
waveform, as a result of the technology of DDS hardware output waveform, the waveform
frequency and phase in high accuracy, meanwhile, the system and IPC communication with
USB2.0 interface, making data communication stable and reliable.
3. D/A and A/D conversion
Uses high precision D/A converter, adopts active low-pass filter, to sooth the output
waveform, good amplitude-frequency characteristics. The control system also retains the 12
circuit and 12 bits A / D converter, can real time sample the output waveform of 12 circuit
analog and display the real output waveform, amplitude and phase on the LCD by software.
4. High precision liner voltage and current amplifier
For phase current and voltage, we persist in adopting high performance linear amplifier
output mode in order to make the current and voltage source to directly output DC and AC
waveform, and calculate the square wave, combined waveform of all the harmonics, fault
transient waveform, etc, can simulate current, voltage characteristics of short-circuit fault. For
power amplifier circuit, we adopt imported power parts with high-power and high-fidelity
module style as power output, combining with heat dissipation structure; it has enough power
redundancy and thermal capacity. The power amplifier circuit has overheat, overflow,