Cryogenic Noise Terminations
Cryogenic terminations require user-provided liquid nitrogen and dry helium gas at 2 psi. Maury's MT152A Pressurization System is available as an optional accessory to regulate the helium pressure. The terminations include a heater circuit which operates on 48 VDC powered by a universal input power supply that accepts line voltages of 100-240 VAC, 47-63 Hz. This design feature prevents ice from forming on the output connector and prevents the heat load of the device-under-test from affecting the output temperature.