160 School House Road, Souderton, PA 18964-9990 USA
Phone 215-723-8181•FAX 215-723-5688
MODEL 100A250A
M1, M2, M3, M4, M5
100 WATTS CW
10 kHz - 250 MHz
The Model 100A250A amplifier is a self-contained, broadband unit designed for laboratory
applications where instantaneous bandwidth, high gain and moderate power output are required.
Utilization of push-pull MOSFET circuitry lowers distortion, improves stability and allows
operation into any load impedance without damage. The Model 100A250A, when used with an RF
sweep generator, will provide a minimum of 100 watts of swept power.
There is a digital display on the front panel to indicate the operate status and fault conditions when
an over temperature, power supply, or amplifier fault has occurred. The unit can be returned to
operate when the condition has been cleared. The 100A250A includes digital control for both local
and remote control of the amplifier. This 8-bit RISC microprocessor controlled board provides both
IEEE-488 (GPIB) and asynchronous, full duplex RS-232 control of all amplifier functions.
Housed in a stylish, contemporary enclosure (except M2, M3, M4), the Model 100A250A provides
readily available RF Power for typical applications such as RF susceptibility testing, antenna and
component testing, watt meter calibration, and use as a driver for higher power amplifiers.
0
50
100
150
200
WATTS
1 10 100 1000
FREQUENCY (MHz)
100A250A TYPICAL POWER OUTPUT
0.001 0.01 0.1
LINEAR @ 3dB COMPRESSION
LINEAR @ 1dB COMPRESSION
REV011402
SPECIFICATIONS
Model 100A250A
RATED OUTPUT POWER.................................................................................... 100 watts
INPUT FOR RATED OUTPUT............................................................................. 1.0 milliwatt maximum
POWER OUTPUT @ 3dB compression
Nominal.............................................................................................................. 157 watts
Minimum............................................................................................................ 125 watts
.
POWER OUTPUT @ 1dB compression
Nominal.......................................................................................................... 107 watts
Minimum 75 watts
FLATNESS............................................................................................................. ± 1.5 dB maximum
FREQUENCY RESPONSE .................................................................................... 10 kHz - 250 MHz instantaneously
GAIN (at maximum setting) ................................................................................... 50 dB minimum
GAIN ADJUSTMENT (continuous range)............................................................. 18 dB minimum
INPUT IMPEDANCE ............................................................................................ 50 ohms, VSWR 1.5:1 maximum
OUTPUT IMPEDANCE........................................................................................ 50 ohms, VSWR 2.0:1 maximum
MISMATCH TOLERANCE *................................................................................. 100% of rated power without foldback. Will operate
without damage or oscillation with any magnitude and
phase of source and load impedance
MODULATION CAPABILITY............................................................................... Will faithfully reproduce AM, FM, or pulse modulation
appearing on the input signal
NOISE FIGURE (above 1.0 MHz)......................................................................... 10 dB typical
HARMONIC DISTORTION................................................................................... Minus 20 dBc maximum at 75 watts
THIRD ORDER INTERCEPT POINT................................................................... 58 dBm typical
PRIMARY POWER................................................................................................ 90 - 135 / 180 - 270 VAC autoranging
47-63 Hz, single phase 1000 watts maximum
REMOTE INTERFACES........................................................................................ IEEE-488, RS-232
CONNECTORS
RF input........................................................................................................ See Model Configuration
REMOTE CONTROL
IEEE-488....................................................................................................... 24 pin female
RS-232............................................................................................................ 9 pin Subminiature D (female)
REMOTE INTERLOCK......................................................................................... 15 pin subminiature D
COOLING.............................................................................................................. Forced air (self contained fans)
MODEL CONFIGURATIONS
Model
Number RF Input RF Output Weight Size
(WxHxD)
100A250A Type “N” female on front panel Type “N” female on front panel 31.75 kg (70.0 lb) 50.3 x 25.2 x 46.0 cm
19.8 x 9.9 x 18.1 in
100A250AM1 Type “N” female on rear panel Type “N” female on rear panel 31.75 kg (70.0 lb) 50.3 x 25.2 x 46.0 cm
19.8 x 9.9 x 18.1 in
100A250AM2 Same as 100A250A with enclosure removed for rack mounting 22.15 kg (49.0 lb) 48.3 x 22.25 x 43.2 cm
19.0 x 8.75 x 17.0 in
100A250AM3 Same as 100A250AM1 with enclosure removed for rack mounting 22.15 kg (49.0 lb) 48.3 x 22.25 x 43.2 cm
19.0 x 8.75 x 17.0 in
100A250AM4 Same as 100A250A with added side carry handles and front panel pull handles and no
enclosure 23.0 kg (51.0 lb) 48.3 x 22.25 x 46.95 cm
19.0 x 8.75 x 18.5 in
100A250AM5 Same as 100A250A with extended range to 255 MHz, where cw output power is 80W 31.75 kg (70.0lb) 50.3 x 25.2 x 46.0 cm
19.8 x 9.9 x 18.1 in
• See Application Note #27
