160 School House Road, Souderton, PA 18964-9990 USA
Phone 215-723-8181•FAX 215-723-5688
MODEL 3500A100
3500 WATTS CW
10kHz - 100 MHz
The Model 3500A100 is a self-contained, air-cooled, broadband, completely solid state amplifier designed for applications
where instantaneous bandwidth and high gain are required. Push-pull MOSFET circuitry is utilized in all high power stages
in the interest of lowering distortion and improving stability. The Model 3500A100, when used with an RF sweep
generator, will provide a minimum of 3500 watts of swept power.
The Model 3500A100 is equipped with a Digital Control Panel (DCP) which provides both local and remote control of the
amplifier. The DCP uses a 4¾ inch diagonal graphic display, menu assigned softkeys, a single rotary knob, and four
dedicated switches (POWER, STANDBY, OPERATE and FAULT/RESET) to offer extensive control and status reporting
capability. The display provides operational presentation of Forward Power and Reflected Power plus control status and
reports of internal amplifier status. Special features include a gain control, internal/external automatic level control (ALC)
with front panel control of the ALC threshold, pulse input capability and RF output level protection. Also included is an
internal RF detector which provides an output for use in self-testing or operational modes.
All amplifier control functions and status indications are available remotely in GPIB / IEEE-488 format. The buss interface
connector is located on the back panel and positive control of local or remote operation is assured by a keylock on the front
panel of the amplifier.
High efficiency universal input, power factor corrected switching power supplies provides DC to all internal sub-
assemblies.
Housed in a stylish, contemporary enclosure, the Model 3500A100 provides readily available RF power for typical
applications such as RF susceptibility testing, antenna and component testing, watt meter calibration, particle accelerators,
plasma generation, communications and use as a driver for higher power amplifiers
3500A100 TYPICAL POWER OUTPUT
5000
LINEAR @ 3dB COMPRESSION
4000
LINEAR @ 1dB COMPRESSION
WATTS
3000
2000
1000
0
0.001
0.01
0.1
1
10
FREQUENCY (MHz)
100
1000
REV061500
SPECIFICATIONS
Model 3500A100
RATED OUTPUT POWER ................................................................ 3500 watts
INPUT FOR RATED OUTPUT ......................................................... 1.0 milliwatt maximim
POWER OUTPUT @ 3dB COMPRESSION
Typical........................................................................................... 4100 watts
Minimum ....................................................................................... 3500 watts
POWER OUTPUT @ 1dB COMPRESSION
Typical........................................................................................... 2500 watts
Minimum ....................................................................................... 2000 watts
FREQUENCY RESPONSE................................................................ 10 kHz - 100 MHz instantaneously
GAIN (at maximum setting)................................................................ 66 dB minimum
FLATNESS ........................................................................................ ± 1.5 dB maximum
± 0.5 dB with internal leveling
GAIN ADJUSTMENT (continuous range) ......................................... 20 dB minimum
INPUT IMPEDANCE ........................................................................ 50 ohms, VSWR 1.5:1 maximum
OUTPUT IMPEDANCE..................................................................... 50 ohms, VSWR 2.5:1 maximum
MISMATCH TOLERANCE ............................................................... Will operate without damage, or oscillation with any
magnitude and phase of source and load impedance. May
limit at 1750 watts reflected power.
MODULATION CAPABILITY .......................................................... Will faithfully reproduce AM, FM or Pulse modulation
appearing on the input signal.
HARMONIC DISTORTION .............................................................. Minus 20 dBc maximum at the specified minimum 1dB
compressed power
THIRD ORDER INTERCEPT POINT............................................... 73 dBm typical
RF POWER DISPLAY ....................................................................... 0 - 5000 watts full scale
PULSE MODE GATING CHARACTERISTICS
Signal (into 50 ohms)..................................................................... + 2.0 to 6.0 VDC
Rise Time....................................................................................... 0.5 microseconds maximum
Fall Time....................................................................................... 0.5 microseconds
RF RISE/FALL TIME........................................................................ 10 nanoseconds maximum
PRIMARY POWER............................................................................ 180-267 VAC Delta (4 wire)
360-435 VAC, Wye (5 wire) (user must specify)
47-63Hz, 3 phase
15,000 watts maximum at .99 P.F. typical
CONNECTORS
RF Input........................................................................................ Type N female on rear panel
RF Output...................................................................................... Type 7/16 female on rear panel
External Leveling Inputs................................................................ Type BNC female on front panel
Pulse Modulation Inputs................................................................ Type BNC female on front panel
Detected RF Output ....................................................................... Type BNC female on front panel
Remote Control .............................................................................. 24 pin female GPIB/IEEE-488 connector on rear panel
Safety Interlock.............................................................................. 15 pin female Type D on rear panel
IEEE-488 (GPIB) INTERFACE ........................................................ Allows control of all amplifier functions
and monitoring of all status indications via standard
GPIB / IEEE-488 commands
COOLING.......................................................................................... Forced air (self contained fans)
WEIGHT (maximum)......................................................................... 317.5 kg (900 lb)
SIZE (W x H x D)............................................................................... 56.2 x 152.0 x 100.0 cm
22.1 x 60.0 x 39.4 in
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