A350 Medium Power Amplifiers MEDIUM POWER AMPLIFIERS A350 SERIES 50 WATTS CW 2.0 GHz - 18.0 GHz DESCRIPTION The A350 series of medium power microporcessor based instrumentation and subsystem amplifiers provide the user with proven reliable instrumentation for a wide variety of test and system applications. The operating modes are selectable via front panel push button controls and the operating mode is displayed on a one line, 16 character, LED digital display. Additionally, salient power supply voltages, currents, and fault indicators can be displayed. Each amplifier can be remote controlled via the standard IEEE-48 GPIB. Each amplifier features complete regulation of the helix, filament and grid power supplies, thus providing stable operation and long life for the TWTs. The TWT is fully protected against power supply malfunctions such as helix overcurrent. Optionally, the TWTAs can be supplied with complete input and output VSWR protection. These medium power TWTAs are compact and lightweight making them ideal for bench operation or rack mounting. FEATURES ● Monitor-Digital Display ❍ ❍ ❍ ❍ ● Mode-Digital Display ❍ ❍ ● Power On/Off RF On Controls ❍ ❍ ❍ ❍ ❍ ● Standby Faults Helix Voltage/Current Collector Voltage Power On Power Off RF On RF Off Local Select Ease of Maintenance file:///C|/MYDOCU~1/8897733/A350.html (1 of 3) [6/7/2001 9:13:08 AM] A350 Medium Power Amplifiers ● ● ● Designed to meet the safety requirements of IEC-348 and UL1419 Broadband Frequency C.E. Certified APPLICATIONS ● ● ● ● ● ● ● EMC Susceptibility Testing Communications General Laboratory Instrumentation System Preamplifiers Threat Simulation Antenna Patterns Testing Component Testing RF SPECIFICATIONS Model Number Frequency Range (GHz) Min Pwr Out* (Watts) 2.0 - 4.0 2.0 - 8.0 4.0 - 8.0 8.0 - 18.0 6.0 - 18.0 50 50 50 50 40 Min Small Signal Gain (dB) Max NF (dB) A350 SERIES A350/S A350/EH A350/C A350/IJ A350/IJX Spurious: In/Out Impedance: In/Out VSWR: Residual AM/FM: RF Connectors : Frequency 2.0 GHz - 18.0 GHz Location: Input Type N Front Panel 34 30 40 35 35 -40 dBc (-50 dBc available) 50 Ohms 2.5:1 Maximum 1% Maximum (-40 dBc) (3) 35 35 35 35 35 Output Type N Front Panel ENVIRONMENTAL Operating Temperature: Relative Humidity: Operating Altitude: NonOperating Temp.: NonOperating Altitude: 0 to 50°C (40°C @ 10,000 feet) 95% (noncondensing) 10,000 feet Maximum -20 to 70°C 50,000 feet Maximum PRIME POWER Switchable 115 or 230 VAC, ±10%, Single Phase, 50-60 Hz, 750 VA maximum. MECHANICAL Dimensions: A350/C: 5.25" (133mm) H x 16.5" (419mm) W x 22.5" (571mm) D Rack Mount Weight: 38 pounds (17.3 kg) Cooling: Internal Forced Air Air Intake: Rear Panel Air Exhaust: Rear Panel S, EH, IJ, IJX: 5.25" (133mm) H x 16.5" (419mm) W x 20.5" (521mm) D Rack Mount file:///C|/MYDOCU~1/8897733/A350.html (2 of 3) [6/7/2001 9:13:08 AM] A350 Medium Power Amplifiers REMOTE OPERATION Standard: Operating mode control and status monitoring via IEEE-488 GPIB. OPTIONS AVAILABLE Option 03: Option 04-XX: Option 07: Option 09: Option 12: Option 13: Option 14: Option 15: Option 18: Option 30: Option 30R: Other options available (2) Reflected Power Cutoff VSWR Protection (1) Alternate Prime Power (2) Input Pin diode Pulse Modulator with 40dB Isolation; 15ns rise/fall times (1) Integral Input Isolator (1) RF Sample of the output (30 dBc) (1) Chassis Slides for Standard 19" Rack Mounting Internal Preamplifier for reated power @ less than 0 input. Input Attenuator; 20dB range (2) RF Input/Output Connectors on the Rear Panel (1) RF Output Power displayed on Digital Front Panel Display (1) Panel Display (1) Reflected Power Metering NOTES: (1) Option may affect rated output power and gain (2) Consult factory for features and other functions (3) Typically -46 dBc AM; -55 dBc FM Specification subject to change without notice Copyright © 1997-2001 STC Keltec file:///C|/MYDOCU~1/8897733/A350.html (3 of 3) [6/7/2001 9:13:08 AM]