AR 20S6G18-L, Operating And Service Manual, Page: 17 / 50

Rev E 1
1. GENERAL INFORMATION
1.1 GENERAL DESCRIPTION
The Model 40S6G18-L is a self-contained, broadband microwave amplifier designed for laboratory
applications where instantaneous bandwidth, high gain, and moderate power output are required. A GAIN
control, which is conveniently located on the unit’s front panel, can be used to decrease the amplifier’s gain
by 10 decibels (dB) or more. Solid state technology is used exclusively to offer significant advantages in
reliability and cost. A Model 40S6G18-L, used with a frequency-swept signal source, will provide 40 watts
of swept power output from 6.0–18 gigahertz (GHz). Typical applications include antenna and component
testing, wattmeter calibration, and electromagnetic interference (EMI) susceptibility testing, as well as usage
as a driver for frequency multipliers and high-power amplifiers. The Model 40S6G18-L can be operated
locally by using the unit’s front panel controls, or remotely by using the unit’s IEEE-488, RS-232 interface,
USB, or Ethernet interface.
1.2 POWER SUPPLIES
The Model 40S6G18-L contains a switching power supply. The input voltage range to the power supply is
90–264 VAC, 47-440Hz, selected automatically.
PS1 is a multiple output supply. The main +27, +12, -12, +10 and -5 volts DC supplies voltage to the RF low
level and final stages. The +24 and +12 volts DC are for operating the cooling fans. Primary AC circuit
protection is provided by the circuit breaker in the Power Entry Module. PS1 also contains a +5V
housekeeping supply for both the A12A1 Control/Fault Board and the A14 Interface board used for the
remote interfaces.
1.3 SPECIFICATIONS
Refer to the AR Data Sheet at the end of this section for detailed specifications. All voltage measurements
referenced in this manual are Direct Current (DC) unless stated otherwise.