Check the listing for details. Vacuum tube analyzer, analyzer tracer module. Condition: New. Listed at 85.00 USD. This module works with the computer ( serial port or USB port via an adapter) or the oscilloscope. You also need an insulated transformer ( Can't use the mains as a source for the high voltage) and a 24VAC transformer, please check the connection by the 3rd picture, High voltage Input 1 & Input 2 refer to the transformer high voltage secondary ( Plate voltage ). The software can work under WinXP, Win7 32/64, Win10. The system can be used in various ways : 1. Characterisation and measurement of vacuum tubes.2. Publication of families of curves.3. Tube matching.4. Testing of parameters under different conditions of use.5. Measurement beyond limits set by the manufacturer: the very weak dissipation of the vacuum tube under testing allows for the verification of characteristics beyond limited conditions. Technical characteristics: Module supply: 24 to 28V a.c. / 300mA min. Measurement mode : synchronised to quarter period of 50 Hz mains. Sampling : 10 bits monotone (1024 steps) Precision of the calculated measurements : 10% Precision of the plate voltage measurement : 5% Precision of the cathode current measurement 32mA range: 0.1mA +/- 1 bit Precision of the cathode current measurement 256mA range: 0.551mA +/- 1 bit Number of samples by measurement : 64 per 5mS cycle Maximum anode voltage : 480 volts Minimal screen resolution : 800 x 600, 256 colours Disk space : 10 Moctets minimum RAM memory : 256 Moctets minimum