DX-60 Hall Effect Test System

001

DX-50

Electromagnet

1. Magnetic field intensity (Magnet Flux Density)

The maximum magnetic field is 1070mT when the distance between N and S is 10mm

The maximum magnetic field is 678mT when the distance between N and S is 20mm

The maximum magnetic field is 500mT when the distance between N and S is 30mm

Maximum magnetic field 378mT when the distance between N and S is 40mm

Maximum magnetic field 293mT when N, S spacing is 50mm

2. Uniformity of magnetic field: when the gap is 10mm, the uniformity of the diameter of 10mm is 1%

3. Electromagnet parameters

3.1, pole diameter φ: 50mm

3.2. Diameter of the pole φ: 50mm

3.3. Adjustable range of pole head gap: 0 ~ 80mm

3.4. The internal resistance of the coil: about 12.0Ω

3.5. Magnetic field stability: ±0.3Gs (within 24h)

3.6 Self-weight: 30Kg

002

DX-2031

A constant current source

1. Output voltage: effective output voltage range 0V—60V DC, open circuit output voltage: 80V 5V @5A

2. Output current: -5A ～ +5A DC (the current linear gradient rate is 0.01A/s-2A/s continuous optional, the maximum scanning current setting range is 0.1mA-5A DC)

3. High step resolution 0.1mA (1/50000 F.S.)

4. Accuracy (0.2% setting value + 5mA), stability better than 0.1% @5A

5. Noise/ripple: 5mA RMS typical value @5A

6. The RS-232 interface can be digitally controlled polarity conversion, which is convenient for the automated Hall effect test process

7. Interactive ability: White backlit FSTN LCD display, necessary LED status indicator, 34-key interactive function keyboard operation with display and indicator, standard RS-232C computer interface and easy-to-use interface features, complete Computer interface command set, timing and continuous trigger output function during scanning

8. Load protection function: instrument power-off protection, instrument over-temperature protection, instrument over-current protection, instrument over-power protection

003

DX-1300

Gauss meter

1. Range: ±1Gs ～ ±30kGs

2. Resolution: 1Gs

3. Accuracy: ±0.5%±0.05% of reading range

4. The thickness of the magnetic sensor is 1.0mm and the length is 100mm

5. Human-computer interaction: bright widescreen high-definition LCD screen, 4¾-digit display, standard 9-pin "D" type RS232 connector

6. Automation: complete computer instructions, through data communication, real-time monitoring and control of the magnetic field environment around the test sample on the computer interface

004

DX-320

Sample constant current source

1. The basic resolution of current output is 0.0001uA, and the basic resolution of voltage measurement is 0.0001mV

2. Output range: 50.00nA-50.00mA can be continuously adjustable in steps of 0.1nA

3. Measuring voltage: 0～±3V large range test voltage meets the test of high resistance chip

4. Built-in four-phase array card with automatic conversion, which can realize automatic measurement of Hall effect van der Pauw method

5. Good human-computer interaction interface, convenient for users to make manual adjustments

6. Complete host computer instructions, which can communicate with the computer to complete various operations

005

DX-35

Sample stage

1. The sample table can support 30*30mm size samples for testing

2. The pressure point of the four-probe method makes the operation and the contact of the sample more convenient and firm

3. The shading parts are installed outside to make the test material more stable

4. The sample stage is fixed on the permanent magnet bracket, so that the sample is in the same position each time, ensuring better measurement repeatability

5. The pin of the sample stage is connected with the CH-320 instrument through the wire to realize the stable measurement of the Van der Pauw method

006

PC software

1. One-key automatic measurement can be realized, and the measurement can be carried out without personnel operation after the start of the test.

2. Set in the software to perform automatic temperature change measurement.

3. I-V curve and B-V curve can be performed in the software

4. The modular design in the software is convenient for customers to use and develop related functions

5. After the experimental results are measured, the data will be temporarily stored in the software. If long-term storage is required, the data can be exported to the EXCEL table to facilitate later data processing

6. Provide Hall Effect standard test samples and data from the Institute of Semiconductors of the Chinese Academy of Sciences: 1 set

007

Supporting equipment

1. Gauss meter sensor fixing bracket: all-aluminum non-conducting bracket, which can be adjusted up, down, left and right, front and back, which is convenient for users to adjust the sensor position according to their needs

2. Magnetic field sensor probe fixing device: all aluminum non-conductor bracket 5-70mm adjustable

3. Temperature measurement and control connection line fixing device

4. The corresponding tools for making ohmic contact solder joints on the sample: electric soldering iron, indium sheet, solder, enameled wire, etc.

5. 232 to USB serial line to realize the communication between the test instrument and the host computer software