Model 2000S1G2z8
10
Rev A
2.3.1.1
Keylock Switch
The Keylock Switch is provided for protection from unauthorized use or unexpected remote control of the
amplifier. The amplifier can only be turned on locally when the Keylock Switch is in the LOCAL position.
Likewise, the unit can only be turned on or controlled remotely when the Keylock Switch is in the REMOTE
position. Placing the Keylock Switch in the INHIBIT position places the amplifier into an RF off state and
prohibits any control of the amplifier. All remote queries are processed and responded to in any of the three
Keylock switch positions.
2.3.1.2
POWER Button
The momentary POWER button turns the main power to the amplifier on and off. The status of the green light-
emitting diode (LED) in the switch indicates whether the amplifier’s power is on or off. The main power supply
fans are active when power is on. The LCD touch display is active as long as the main circuit breaker for the
amplifier power entry module is on.
2.3.1.3
ADJUST Knob
The ADJUST knob is used to set the value of several parameters available through the touch screen menu
options. These parameters are RF Gain, ALC Threshold, ALC Detector Gain, and ALC Response. The Select
Menu is used to select which parameter the ADJUST knob is able to adjust. The range of RF Gain, ALC
Threshold, and ALC Detector Gain is 0 to 100 percent. The range of the ALC Response is 1 to 7. The ADJUST
knob can be rotated both clockwise and counterclockwise 360 degrees.
2.3.1.4
Touch Screen
The touch screen is a color LCD that can accept single touch events from soft blunt objects such as a human
finger. The mechanism that registers touch events is resistive based and relies on pressure, not capacitance.
Menu options presented on the touch screen are typically gray in color with a black text label in the center.
When a valid touch event is registered a thin black box appears around the valid touch location and an optional
audible beep will occur.
2.3.1.5
Remote Communications Ports
The REMOTE option allows for control of the amplifier using GPIB, USB, Ethernet, Fiber-Optic (serial) or
RS-232 Serial ports located on the rear of the amplifier. For more information, see
Remote Control Interfaces
,
section 2.10.
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