AR 10051217, Operating And Service Manual

Page: 19 / 90

Rev A 1
1. GENERAL INFORMATION
1.1 GENERAL DESCRIPTION
The Model 2000S1G2z8 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 2000S1G2z8, used with a frequency-swept signal source, will provide 2000 watts of swept
power output from 1.0–2.8 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 2000S1G2z8 can be operated locally by using
the unit’s front panel controls, or remotely by using the unit’s IEEE-488, RS-232, USB, or Ethernet interfaces.
Special features incorporated into the Model 2000S1G2z8 include the following:
• 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.
•
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 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.
1.3 POWER SUPPLIES
The Model 2000S1G2z8 contains nine switching power supplies. The input voltage range to the power supplies
is 200–240 VAC, 47/63 Hz, for the low voltage option; for the high voltage option, 380-415 VAC, 47/63 Hz
selected automatically.
PS1 is a multiple output supply. +5V and -15V is fed to the A80 and A81 Regulator Assemblies. The Regulator
Assemblies supplies -5V, -12V and +15V to the A1 Preamplifier. The Regulator assemblies also supply -8V to
(Terminal Blocks) TB1, TB3, TB4, TB6, TB7, TB9, TB10, and TB11. A80 and A81 also provide on /off signals
to PS3 through PS9.- 5V and -12Vis also supplied to the A1 Pre-Amplifier.
PS2 is a single output supply that supplies -15V to the A81 Regulator Board.