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 standby m faults m helix voltage/current m collector voltage m l mode-digital display power on/off m rf on m l controls power on m power off m rf on m rf off m local select m l ease of maintenance l a350 medium power amplifiers file:///c|/mydocu~1/8897733/a350.html (1 of 3) [6/7/2001 9:13:08 am]
designed to meet the safety requirements of iec-348 and ul1419 l broadband frequency l c.e. certified l applications emc susceptibility testing l communications l general laboratory instrumentation l system preamplifiers l threat simulation l antenna patterns testing l component testing l rf specifications model number frequency range (ghz) min pwr out* (watts) min small signal gain (db) max nf (db) a350 series a350/s 2.0 - 4.0 50 34 35 a350/eh 2.0 - 8.0 50 30 35 a350/c 4.0 - 8.0 50 40 35 a350/ij 8.0 - 18.0 50 35 35 a350/ijx 6.0 - 18.0 40 35 35 spurious: -40 dbc (-50 dbc available) in/out impedance: 50 ohms in/out vswr: 2.5:1 maximum residual am/fm: 1% maximum (-40 dbc) (3) rf connectors : frequency input output 2.0 ghz - 18.0 ghz type n type n location: front panel front panel environmental operating temperature: 0 to 50c (40c @ 10,000 feet) relative humidity: 95% (noncondensing) operating altitude: 10,000 feet maximum nonoperating temp.: -20 to 70c nonoperating altitude: 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 s, eh, ij, ijx: 5.25" (133mm) h x 16.5" (419mm) w x 20.5" (521mm) d rack mount weight: 38 pounds (17.3 kg) cooling: internal forced air air intake: rear panel air exhaust: rear panel a350 medium power amplifiers file:///c|/mydocu~1/8897733/a350.html (2 of 3) [6/7/2001 9:13:08 am]
remote operation standard: operating mode control and status monitoring via ieee-488 gpib. options available option 03: reflected power cutoff vswr protection (1) option 04-xx: alternate prime power (2) option 07: input pin diode pulse modulator with 40db isolation; 15ns rise/fall times (1) option 09: integral input isolator (1) option 12: rf sample of the output (30 dbc) (1) option 13: chassis slides for standard 19" rack mounting option 14: internal preamplifier for reated power @ less than 0 input. option 15: input attenuator; 20db range (2) option 18: rf input/output connectors on the rear panel (1) option 30: rf output power displayed on digital front panel display (1) panel display (1) option 30r: reflected power metering other options available (2) 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 a350 medium power amplifiers file:///c|/mydocu~1/8897733/a350.html (3 of 3) [6/7/2001 9:13:08 am]
|
