4. 仪器特点：
4-1 Automatic or manual current selection
自动或手动模式(电流控制磁场模式)
4-2 Automatic contact check
自动接触检查(欧姆接触)
4-3 Routine and enhanced software
常规和增强软件
4-4 Differential resistivity measurements by I/V-curves
I/V曲线测试电阻率差异
4-5 Bench top permanent magnet
永磁体
4-6 Misalignment voltage compensation
失调电压补偿
4-7 Correction of slow sample drift voltage, especially for ZnO,
修正慢样品漂移电压，特别是氧化锌
4-8 Automatic field calibration
自动现场标定
4-9 Large concentration and resistivity range
大浓度和电阻率范围
4-10 Flexible, modular hardware
灵活的模块化硬件
4-11 Support of various magnets, for example BioRad HL 5200
支持多样磁场
4-12 Support of various temperature controllers
支持各种温度控制器(支持客户自行升级变温系统)
4-13 Van der Pauw and bar shape (bridge-type) Hall samples
支持范德堡和霍尔巴法测试霍尔
5 硬件
5-1 The standard system consists of a bench top electronic system, a small magnet and a sample stage for room temperature and LN2 measurements.
标准系统包含电子测试系统、磁场和两个温度区域的测试平台（室温和液氮温度）
5-2 The electronics include the current source, the voltage measurement part, the contact switching module, the magnet power supply and the IEEE or RS232 interface. It is completely micro processor controlled.
电子测试系统包括由单片机控制的电流源、电压测试、接触开关模块、磁场电源、IEEE或RS232接口
5-3 The contact switching module is designed to allow all possible measurement configurations.
接触开关模块支持所有用户用于其他的配置(用户可以采用制冷机做变温霍尔测试)
5-4 The current source has adjustable limits for voltage and/or power. {+++}
电流源具有可调电压和/或电源的限制
5-5 Voltage measurement provides different input amplifiers optimized for either low current or low voltage applications.
电压测量提供了不同的输入放大器或低电流或低电压应用的优化。
