The trainer should have a Main Experiment Unit with the below
components:

1. Power Supply Unit
   1. Fixed DC power supply
      1. Output voltage : +5V, -5V, +12V, -12V
      2. Max. output current : +5V/3A, - 5V/0.3A, +12V/1.5A, -12V/0.3A
      3. With output overload protection
2. Interface Port
   1. USB interface : Type B
3. Status Display & DCV
   1. Input voltage measurement
      1. Range : 2000mV, 20V
      2. Accuracy : ±0.05% of reading + 4 counts
      3. Input impedance : 10MΩ
      4. Display : 4-1/2 digits
   2. Sensor input measurement
      1. Sensor types : TEMP, %RH, LUX,WEIGHT, AUX
      2. Accuracy : ±0.05% of reading + 4 counts
      3. Display : 4-1/2 digits
4. Preset Level :
   1. 4-digit thumbwheel switch, Max. value : 4095
5. 5. Single-Chip & EPROM
   1. Single-chip processor : 89C51
   2. 8 Control line outputs
6. 6. D/A Converter : 1x12-bit DAC
   1. Resolution : 1.22mV/bit
   2. Analog output & control OUT+ : +DC OFFSET 0V ~ +4.096V unipolar
   3. OUT- : -DC OFFSET 0V ~ - 4.096V unipolar
   4. OUT BP : DC OFFSET -2.048V ~ +2.048V bipolar
7.  A/D Converter : 1x12-bit ADC
   1. Resolution : 1.22mV/bit
   2. Input voltage range : 0 ~ +5V
   3. Time pulse frequency : 3.58 MHz
   4. Control signals : State, pole, over voltage indication
8.  Amplifiers
   1. Instrumentation amplifier : ±Vi input, Vo output, adjustable gain
   2. Differential amplifier : ±Vi input, Vo output
   3. Comparator : ±Vi input, Vo output
   4. Alarm amplifier : buzzer with driver circuit
9. Selectors
   1. Single-chip selector
   2. Manual/ single-chip selector
10. Potentiometer:
    1. 100KΩ B-type
    2. List of modules to be supplied and connectible
    3. to the main unit to perform corresponding
    4. experiments:
       1. Sensor Module
       2. General Transducer Module
       3. AD590 Transducer Module
       4. Thermocouple Transducer Module
       5. PT-100 Temperature Transducer Module
       6. Humidity Transducer Module
       7. Load-Cell Transducer Module
       8. LVDT Transducer Module
       9. Photovoltaic Transducer Module
       10. Counter Module
       11. Linear Scale Module
       12. Infrared Transducer Module
       13. Multi-Channel Remote Controlled Module
       14. Ultrasonic Transducer Module
       15. Pressure Sensor Module
       16. VFC Module
       17. FVC Module