采集单元具有LCD液晶显示功能，可直接显示采集信号，便于维护、检查。
Collection unit has LCD function that can display collected signal for the convenience of maintenance and inspection.
测试结果表明，该参数监测单元改善了监测信号的抗干扰能力、可靠性和可维护性，满足系统人因工程需要，达到了预期要求。
Experiment results show that the interference immunity, consistency, maintainability of the parameter polling instrument has been improved and satisfies the expected requirements.
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