Manufacturers
L-3 COMMUNICATIONS ELECTRON DEVICES M702
Description
L-3 Communications Electron Devices M702 Pulse TWT Amplifier
Part Number
M702
Price
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Manufacturer
L-3 COMMUNICATIONS ELECTRON DEVICES
Lead Time
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Category
PRODUCTS - M
Features
- Automatic fault protection
- Lightweight and compact
- Operates from +28 VDC
- Over 300 watts of output power
- Qualified for extreme military environments
- Remote control and monitoring
- Uses the L5843 TWT
Datasheet
Extracted Text
M702 Pulse TWT Amplifier Features: • Lightweight and compact • Operates from +28 VDC • Over 300 watts of output power • Qualified for extreme military environments • Remote control and monitoring • Automatic fault protection • Uses the L5843 TWT The M702 TWT amplifier is designed for It can be optimized for narrow band radar or military airborne use and typically supplied data link applications. fully integrated with an L5843 TWT, thereby The M702 is designed with digital controls, forming a self-contained pulsed microwave status signals, analog monitoring signals, amplifier operating over a 7.0 to 16.5.0 GHz and has extensive fault protection. band. DS7020807 Electrical Interface Prime Power . . . . . . . . . . . . . .+28VDC (per MIL-STD-704B Controls . . . . . . . . . . . . . . . . . . . . .Standby/Operate, Pulse 24 VDC min. Status . . . . . . . . . . . . . . . . . . . . . . .Standby/Operate, Fault Power Consumption . . . . . . . . . .380 Watts max at 28 VDC Monitors . . . . . . . . . . . . . . .Cathode Voltage, Helix Current, and 7% duty cycle Beam Current Output Power (to TWT) . . . . . . . . . . . . . . . .300Watts max Environment Filament Voltage* . . . . . . . . . . . . . . . . . . . . . . . . .-6.3 VDC Temperature . . . . . . . . . . . . . . . . . . . . . . . . -54°C to +85°C Filament Current . . . . . . . . . . . . . . . . . . . .1.4 Amps typical Altitude . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35K feet Warm-Up Time . . . . . . . . . . . . . . . . . . . . . . .3 minutes max Vibration . . . . . . . . . . . . . . . . . . . . . . . . . 5g’s, 5 to 2000 Hz Cathode Voltage . . . . . . . . . . . . .-5.1 to -6.7 kV, adjustable Shock . . . . . . . . . . . . . . . . . . . . . . 10g’s, 11 msec half-sine Beam Current . . . . . . . . . . . . . . . . . . . . . . . .640mA typical Humidity. . . . . . . . . . . . . . . . . . 95% RH, with condensation Helix Current . . . . . . . . . . . . . . . . . . . . . . . . .100mA typical Collector Voltage* . . . . . . . . . . . . . . . . . . . . .4.25 kV typical Mechanical Collector Current . . . . . . . . . . . . . . . . . . . . .540 mA typical Cooling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Conduction Grid Drive Voltage* . . . . . . . . . .40 to 110 Volts, adjustable Weight Grid Drive Current . . . . . . . . . . . . . . . . . . . . .95 mA typical HVPS . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.5 lbs max Grid Bias Off Voltage* . . . . . . . . . . . . . . . .-105 Volts typical TWT . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.3 lbs max Pulse Width . . . . . . . . . . . . . . . . . . . . .500 nsec to 20 µsec Dimensions . . . . . . . . . . . . . . . . . . . . . See Outline Drawing Pulse Repetition Frequency . . . . . . . . . . . . . . .50 KHz max Burst . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .100 KHz max Protection Duty Cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7% max TWT Arcing Excess Duty Cycle Modulator Output Rise Time . . . . . . . . . . . . . .15 nsec max Pulse Width Helix Current Modulator Output Fall Time . . . . . . . . . . . . . .25 nsec max Beam Current Prime Power Current Acquisition (TTL to RF) Time . . . . . . . . . . . . . .70 nsec max Cathode Voltage Power Supply Temperature *with respect to cathode Prime Power Voltage TWT Temperature Cleared by DoD/OSR for public release under 07-S-2669 dated 09/12/07 L-3 Communications Electron Devices Phone 650-591-8411 Fax 650-508-1956 e-mail: scl.marketing@L-3com.com www.L-3com.com/edd Monitoring Signals Control Input Signals Pin 2 Cathode Voltage 1 volt/kilovolt Pin 3 Standby/operate command Pin 8 Helix current: 15 volts/ampere Standby: Open circuit (or TTL High) Pin 9 Beam Current 1 volt/ampere Operate: Ground (or TTL Low) Pin 5 Ground return Summary of Connector Functions Status Output Signals Connector Type Function Output Max Load J1 M24308/4-1 Prime Power Description Voltage Current J2 M24308/2-1 Control Status and Monitoring Signals Pin 4 Standby Indicator J3 SMC male TWT thermal overload. Normally On 0.4 V max Sink = 100 mA closed. Opens at 140°C. Isolated. Off 12 V min. Source = 1 mA J4 SMC female Pulse Input J5 LGH1/2 I To TWT collector Pin 6 Operate Indicator J6 LGH1/2 I To TWT ground On 0.4 V max Sink = 100 mA J7 LGH1/2 I To TWT heater Off 12 V min. Source = 1 mA J8 LGH1/2 I To TWT cathode Pin 7 Fault Indicator J9 LGH1/2 I To TWT grid Active 0.4 V max Sink = 100 mA Inactive 12 V min. Source = 1 mA L-3 Communications Electron Devices Phone 650-591-8411 Fax 650-508-1956 e-mail: scl.marketing@L-3com.com www.L-3com.com/edd
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