Rev C
1
1.
GENERAL INFORMATION
1.1 GENERAL DESCRIPTION
The Model 350S1G6A 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 350S1G6A, used with a frequency-swept signal source, will provide 350 watts
of swept power output from 0.7–6.0 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 350S1G6A 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.
Special features incorporated into the Model 350S1G6A include the following:
•
A Digital Control Panel (DCP)
that allows both local and remote (via a computer interface) control of
the amplifier (including adjustment of the amplifier’s RF Gain during CW mode operation) and provides
graphical displays of the amplifier’s Forward and Reflected power levels.
•
RF output level protection.
•
A General Purpose Interface Bus (GPIB)/IEEE-488.2 interface
for remote control of the amplifier’s
operating functions.
•
RS232 serial communications
including both wire and fiber-optic ports
for remote control.
•
USB Communication port
for remote control.
•
Ethernet Communication port
for remote control.
•
Protection
is provided by DC current limiting, over-temperature shut down and RF power limiting.
1.2 SPECIFICATIONS
Refer to the AR RF/Microwave Instrumentation Data Sheet at the end of this section for detailed
specifications.
1.3 POWER SUPPLIES
The Model 350S1G6A contains four switching power supplies. The input voltage range to the power supplies
is 200–260 VAC, 50-60Hz, selected automatically. The AC input power, combined for these four supplies is
approximately 3600 watts.
PS1 has a +5 volt, standby supply for the A60 Control Panel Assembly and the A61 Interface board used for
the remote interfaces. The +5 volt supply is also for operation of the A66 ALC board.
PS1 is a multiple output supply. It provides ±15 VDC to the A65 Regulator board.
PS2 is a single output supply which pr24VDC to Fan Assemblies B1-B4, B7-B14 and B17-B20.
PS3 and PS4 are single output supplies which p25.7 VDC to the RF driver and final stages. Primary
AC circuit protection is provided by the circuit breaker in the Power Entry Module.
