for additional information on cpi mpp products contact: cpi mpp, helix twt operation - 811 hansen way, palo alto, ca 94303-0750 phone: 650-846-3900, fax: 650-494-8779, email: marketing@mpp.cpii.com , www.cpii.com/mpp 400 w, cw helix twt series, 5.850 ghz to 7.100 ghz, periodic-permanent, magnet focused, coaxial input, waveguide output, and conduction cooled . custom configurations are also available. these variations in the performance and configuration include: mechanical configuration, electrical and rf connections, & dual stage depressed collector. the values listed above represent specified limits for the pro duct and are subject to change. the data should be used for basic information only. formal, controlled specifications may be obtained from cpi for use in equipment design. features ? 400 watts ? ppm focusing ? coaxial input ? waveguide output ? any mounting position ? weight: 7.5 lbs. max (6.8 typical 3.1 kg) ? conduction cooled ? dual stage collector operating parameters heater voltage heater surge current helix voltage collector voltage 1 collector voltage 2 cathode current parameters: ef if (surge) ew eb1 eb2 ik units: v a kvdc kvdc kvdc madc maximum: 6.3 5.0 9.1 0.55 ew 0.35 ew 310 minimum: 5.9 - - - 8.4 0.49 ew 0.31 ew - - - typical: 6.3 <5 8.8 .50 ew .32 ew 290 helix current drive power (rated po) cathode warm- up time load vswr baseplate temp. collector 1 current collector 2 current parameters: iw pd tk ib1 ib2 units: madc mw minutes 1.5:1 c ma (dc) ma (dc) maximum: 15 10 - - - 120 175 310 minimum: - - - - - - 3 - - - - - - - - - - - - typical: 6 6 3 <1.25 85 125 160 model number frequency power output (ghz) (min.) vtc-6264d4 5.85 ? 7.1 400 w VTC-6264D2C 5.85 ? 7.1 400 w vtc-6264d5c 5.725 ? 5.825 400 w
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