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Model 50W1000B
M1 through M5
50 Watts CW
1MHz–1000MHz
The Model 50W1000B is a portable, self-contained, air-cooled, broadband, solid state amplifier designed for
applications where instantaneous bandwidth and high gain are required. Push-pull circuitry is utilized in the
high power stages to lower distortion and improve stability. The 50W1000B, when used with an RF sweep
generator, will provide a minimum of 50 watts of swept power. Included is a front panel gain control which
permits the operator to conveniently set the desired output level. The 50W1000B is protected from RF input
overdrive by limiting diodes and an RF input leveling circuit which controls the RF input level to the RF amplifier
first stage when the RF input level is increased above 0 dBm. The RF Amplifier stages are protected from over
temperature by removing the DC voltage to them if an over temperature condition occurs due to cooling
blockage or fan failure. 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 50W1000B 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.
50W1000B TYPICAL POWER OUTPUT
100
LINEAR @ 3dB COMPRESSION
80
60
LINEAR @ 1dB COMPRESSION
WATTS
40
20
0
0.1
1 10 100 1000 10000
FREQUENCY (MHz)
ar worldwide • rf/microwave instrumentation 080806
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RATED OUTPUT POWER ...............................................50 watts minimum
INPUT FOR RATED OUTPUT ..........................................1.0 milliwatt maximum
POWER OUTPUT @ 3dB COMPRESSION
Nominal ................................................................70 watts
Minimum ...............................................................50 watts
POWER OUTPUT @ 1dB COMPRESSION
Nominal ................................................................55 watts
Minimum ...............................................................40 watts
FLATNESS.....................................................................±1.0 dB typical
±1.5 dB maximum
FREQUENCY RESPONSE ...............................................1-1000 MHz instantaneously
GAIN (at maximum setting) ...........................................47 dB minimum
GAIN ADJUSTMENT (Continuous Range) .......................20 dB minimum (4096 steps remote)
INPUT IMPEDANCE.......................................................50 ohms, VSWR 2.0:1 maximum
OUTPUT IMPEDANCE ...................................................50 ohms, nominal
MISMATCH TOLERANCE * ............................................100% of rated power without foldback. Will operate without damage or
MODULATION CAPABILITY...........................................Will faithfully reproduce AM, FM, or pulse modulation appearing on the input
HARMONIC DISTORTION.............................................Minus 20 dBc maximum at 50 watts
THIRD ORDER INTERCEPT POINT ..................................57 dBm typical
PRIMARY POWER (selected automatically).......................90-132, 180-264 VAC
50/60 Hz, single phase
600 watts maximum
REMOTE INTERFACES ...................................................IEEE-488, RS-232
CONNECTORS
RF..........................................................................Type N female
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)
WEIGHT .......................................................................See Model Configurations
SIZE (WxHxD)................................................................See Model Configurations
* See Application Note #27
MODEL RF INPUT RF OUTPUT WEIGHT SIZE (W x H x D)
50W1000B Type N female on front panel Type N female on front panel 25.9 kg (57.0 lb) 50.3 x 20.3 x 45.7 cm
50W1000BM1 Type N female on rear panel Type N female on rear panel 25.9 kg (57.0 lb) 50.3 x 20.3 x 45.7 cm
50W1000BM2 Same as 50W1000B with enclosure removed for rack mounting 16.4 kg (36.0 lb) 48.3 x 17.8 x 46.0 cm
50W1000BM3 Same as 50W1000BM1 with enclosure removed for rack
50W1000BM4 Same as 50W1000BM2 with gain control removed 16.4 kg (36.0 lb) 48.3 x 17.8 x 46.0 cm
Type N female on front panel Type N female on rear panel 50W1000BM5
Enclosure removed for rack mounting
SPECIFICATIONS, MODEL 50W1000B
oscillation with any magnitude and phase of source and load impedance.
signal
MODEL CONFIGURATIONS
mounting
19.8 x 8.0 x 18.1 in
19.8 x 8.0 x 18.1 in
19.0 x 7.0 x 18.1 in
16.4 kg (36.0 lb) 48.3 x 17.8 x 46.0 cm
19.0 x 7.0 x 18.1 in
19.0 x 7.0 x 18.1 in
16.4 kg (36.0 lb) 48.3 x 17.8 x 46.0 cm
19.0 x 7.0 x 18.1 in
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