Atec Amplifier-Research-250L - Manual

160 School House Road, Souderton, PA 18964-9990 USA
Phone 215-723-8181•FAX 215-723-5688
MODEL 250L
250 WATTS CW
750 WATTS PULSE
10 kHz - 220 MHz
The Model 250L is a self contained, forced air cooled, broadband amplifier that features instantaneous
bandwidth, high gain and moderate power output. It employs all solid state, MOSFET low power
stages and a vacuum tube final amplifier. To increase its versatility for laboratory applications, both
CW and PULSE modes are provided. All control and protection circuits use solid state logic.
Overload comparators are used in both the CW and PULSE modes to safeguard against overdrive or
excessive pulse lengths. In addition, the final amplifier tubes are protected by a high speed crowbar
circuit. Easily accessible, rear mounted test points and LED indicators provide monitoring of
operating voltages and currents. Remote control is provided through a rear panel mounted connector.
Isolated TTL level remote control can be accomplished using our CP2001 interface. Isolated IEEE-
488 compatible control can be provided with our Model CP3000. A continuously variable RF input
attenuator conveniently located on the front panel permits operator adjustment of the output power as
required. The Model 250L is useful in many applications such as RF susceptibility testing, plasma
experiments, ultrasonics, and RF heating.
0
200
400
600
800
1000
1200
WATTS
1 10 100 1000
FREQUENCY (MHz)
250L TYPICAL POWER OUTPUT
PULSE
CW
LINEAR @ 1dB COMPRESSION
0.1 0.01 0.001
REV072696