Since delivering our first Microwave Tube Test Station in 1973 ETM has established itself as the pre-eminent manufacturer of high voltage test equipment. Today, we have over one thousand high voltage test stations that have proven themselves in the field.

ETM test stations range from the very basic to sophisticated automated turn-key systems. They are utilized by the major of tube manufacturers around the world including: CPI, Teledyne, Hughes, Northrop, NEC in Japan, Elta in Israel, Alelco in Italy, and Itri-ERSO in Taiwan, as well as at U.S. and European defense department repair depots.

Automated TWT Test Station

ETM can provide fully automated, turn-key test stations for microwave tube testing.

A single universal test set is capable of testing many different TWT's. Operating parameters for each tube-under-test can be stored in memory and automatically configured for voltages, currents, RF drive power and fault trip levels.

High Power Test Set

ETM provides test sets for high-power TWT's, Klystrons, Magnetrons, and Tetrodes.These systems are configured for each tube type to support continuous-wave, grid-pulsed, anode-pulsed, or cathode-pulsed modulation.

Each microwave tube is carefully protected from fault conditions by ETM's Electronic Crowbar System. For cathode voltages exceeding 20kV, the transformer/rectifier is contained in a dielectric oil tank to prevent voltage breakdown.

Compact Tube Tester

ETM has developed a compact one-rack tube tester that takes advantage of ETM's switching power supply technology.

The Cathode and Collector Power Supplies are separated into modular drawers that are easily maintained and replaced. ETM's familiar system control interface is used on this cost-effective model.

Modular Aging Power Supply