AR 10046494, Руководство по эксплуатации и обслуживанию, Страница: 19 / 60

Rev A 1
1. GENERAL INFORMATION
1.1 GENERAL DESCRIPTION
The Model 60/40S1G18B is a self-contained, dual 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 60/40S1G18B, used with a frequency-swept signal source, will provide 30
watts of swept power output from 0.7–6.0 Gigahertz (GHz), or 40 watts of swept power output from 6.0 to 18
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 60/40S1G18B 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.
CAUTION:
AR does not recommend using the amplifier at any frequency below
0.7GHz as this may cause damage to RF devices due to an unbalanced
configuration.
1.2 POWER SUPPLIES
The Model 60/40S1G18B contains three switching power supplies. The input voltage range to the power
supply is 90–264 VAC, 47-440Hz, selected automatically.
PS1 is a multiple output supply used for the low band amplifier (0.7-6.0 GHz) and high band amplifier (6–18
GHz). The main +26.3 volts DC supplies voltage to the RF low level and final stages. The sec24
volts DC is for operating the high band cooling fans and the –24 volts DC is supplied to the (A7) Regulator
board. Primary AC circuit protection is provided by the AC fuses in the Power Entry Module.
Power supply PS2 is also a switching supply that automatically sets the AC input circuits to the correct
connections for the line voltage 90-132 and 180-250 VAC input ranges 50/60Hz. This power supply is
responsible for the +26.3V drain bias to the high band driver amplifier A1A2 and 40 watt amplifier A4 & A5.
Power supply PS3 is also a switching supply that automatically sets the AC input circuits to the correct
connections for the line voltage 90-132 and 180-250 VAC input ranges 50/60Hz. The +25.7 VDC output
supplies voltage for the low band driver A7 and output modules A9 and A10. PS3 also su24.0V to
the low band fans.
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.